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Explore CDADA’s 300+ Circuit Breakers: Direct China Factory Prices for MCCB, MCB & Solar DC Breakers – CE/KEMA Certified, Customizable & Ready to Ship.

Electrical Protection Devices
Electrical Control Devices
Solar Power Electrical Devices
Distribution Boxes and Accessories
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1600A Air Circuit Breaker

1600A Air Circuit Breaker

CDADA is a reliable manufacturer of 1600A Air Circuit Breaker, which is CB-certified with intelligent protection, built for heavy-duty industrial power distribution needs. Made with high-grade components and robust construction, this air circuit breaker is easy to operate and maintain, fitting seamlessly into industrial power systems. It's the top choice for wholesale and OEM procurement, delivering stable, reliable performance for all industrial power protection demands.
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2000A Air Circuit Breaker

2000A Air Circuit Breaker

2000A Air Circuit Breaker is CDADA factory's product, it is perfect for wholesale and bulk procurement, with IEC/GB certification. The product offers drawout or fixed type options, ideal for industrial power distribution. We welcome OEM orders, as a reliable ACB supplier with open communication interface, easy to deploy in power systems.
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3200A Air Circuit Breaker

3200A Air Circuit Breaker

CDADA is a professional ACB manufacturer and supplier in China. This 3200A Air Circuit Breaker (DAA2-3200 Series) is perfect for bulk buying, fit for AC 50Hz, 690V networks. It boasts intelligent protection and precise selective tripping, with drawout/fixed options. It’s a dependable low voltage ACB for bulk buyers needing stable power distribution performance.
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4000A Air Circuit Breaker

4000A Air Circuit Breaker

4000A Air Circuit Breaker is offered by the reliable manufacturer, CDADA. It is a top pick for bulk procurement, engineered for AC 50Hz, 690V heavy-duty power systems. This ACB features intelligent protection and precise selective tripping, with flexible drawout and fixed configurations. Ideal for switchgear setups, we welcome bulk orders and OEM projects for this high-capacity ACB.
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6300A Air Circuit Breaker

6300A Air Circuit Breaker

Choose CDADA as your supplier, our 6300A Air Circuit Breaker is a top choice for bulk sourcing, an IEC/GB certified high-capacity unit built for power plants and heavy industrial use. It comes in drawout and fixed types, engineered for reliable low-voltage power protection. We're a trusted manufacturer, welcoming OEM projects and bulk ACB orders for global industrial buyers.
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3 Phase Air Circuit Breaker

3 Phase Air Circuit Breaker

CDADA is the manufacturer of 3 phase air circuit breaker, this product is ideal for bulk sourcing, a versatile solution built for industrial power distribution networks with 400A-6300A rating. It features intelligent protection and precise selective tripping, compliant with GB14048.2 and IEC60947-2. It's the go-to 3P ACB for OEMs and distributors needing robust, reliable low-voltage switchgear for global projects.
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Fixed Type Moulded Case Circuit Breaker

Fixed Type Moulded Case Circuit Breaker

Source high quality and advanced Fixed Type Moulded Case Circuit Breaker (MCCB) from Shanghai DADA Electric—certified (CE, CB, ASTA), thermal-magnetic protection, 12.5A–1600A. Ideal for industrial & commercial panels. Easy DIN-rail or panel mount. OEM & bulk orders welcome, choose CDADA as your supplier with confidence.
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Miniature Circuit Breaker REAL 6KA

Miniature Circuit Breaker REAL 6KA

Contact CDADA today and let us be your supplier of Miniature Circuit Breaker REAL 6KA, a high-quality miniature circuit breaker compliant with IEC/EN60898 for reliable circuit protection. It features thermal magnetic tripping and a flame-retardant shell, is easy to install on DIN rail, and is simple to maintain. It combines stable performance with durable design, achieving long service life for residential and industrial power distribution.
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Miniature Circuit Breaker DPN 6KA

Miniature Circuit Breaker DPN 6KA

CDADA Miniature Circuit Breaker DPN 6KA is perfect for bulk procurement, a high-quality 1P+N miniature circuit breaker compliant with IEC60898-1 for safe household and commercial circuit protection. It uses dual break-point design and stable thermal-magnetic tripping, easy to install on DIN rail and simple to maintain. It combines reliable structure with long service life, ensuring safe power supply for various low-voltage power systems.
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3 Phase MCB Breaker

3 Phase MCB Breaker

Choose CDADA as your manufacturer and supplier, and get our 3 Phase MCB Breaker, CE CB CCC certified with 6kA breaking capacity for industrial and commercial power distribution. This product uses flame-retardant shell and precise thermal-magnetic tripping, is easy to mount on DIN rail and simple to maintain. It combines stable performance with long mechanical and electrical life, ensuring safe circuit protection for three-phase power systems.
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125 15KA Miniature Circuit Breaker

125 15KA Miniature Circuit Breaker

As a reliable manufacturer of 125 15KA Miniature Circuit Breaker, CDADA's product is a high-performance 125A MCB with 15kA breaking capacity for heavy-duty power distribution. It uses PA66 flame-retardant shell and dual arc chamber design, easy to mount on DIN rail and simple to maintain. It combines silvered contact structure with industrial-grade durability, achieving ultra-long service life for large-current circuits.
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6KA 10kA Miniature Circuit Breaker

6KA 10kA Miniature Circuit Breaker

CDADA 6kA 10kA miniature circuit breakers are the premier choice for bulk procurement, offering high-breaking capacity compliant with IEC60898 standards. This MCB is engineered for stable circuit protection in residential and industrial power systems. Featuring a compact flame-retardant design and fast thermal-magnetic tripping, it ensures safety against overloads and short circuits. Easy to install on 35mm DIN rails, it units deliver a long service life and reliable performance for global electrical distributors and contractors.
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4.5kA 6kA Miniature Circuit Breaker

4.5kA 6kA Miniature Circuit Breaker

CDADA is the professional manufacturer of 4.5kA 6kA Miniature Circuit Breaker, certified with CCC and ISO9001 for safe circuit protection. It uses flameretardant shell and precise thermal-magnetic tripping, is easy to mount on DIN rail and simple to maintain. It combines stable performance with long service life, ideal for residential, commercial and industrial power distribution.
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CM1 Moulded Case Circuit Breaker

CM1 Moulded Case Circuit Breaker

This CDADA CM1 Moulded Case Circuit Breaker (MCCB) is built for bulk procurement, with IEC60947-2 certification and stable performance for industrial power systems. The CM1 MCCB uses high-strength structure and reliable tripping mechanism, easy to install and maintain. It combines intelligent protection with durable design, ensuring long service life in power distribution and heavy industrial applications.
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1P 6kA AC Miniature Circuit Breaker

1P 6kA AC Miniature Circuit Breaker

Feel free to contact CDADA, and get our 1P 6kA AC Miniature Circuit Breaker with factory direct price, offering reliable overload and short-circuit protection with compact DIN-rail design. This product features precise thermal-magnetic tripping and clear status indication, easy to install and maintain. It delivers stable performance for residential and light commercial circuits, ensuring safe power supply with long service life.
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160A Thermal Magnetic Adjustable MCCB

160A Thermal Magnetic Adjustable MCCB

CDADA is the manufacturer of 160A Thermal magnetic adjustable MCCB, our product is ideal for bulk procurement, a high-performance moulded case circuit breaker certified with IEC60947-2 for industrial power distribution. This MCCB uses current-limiting structure and modular accessories, easy to install and maintain. It combines adjustable tripping with patented contact design, achieving long life and stable circuit protection.
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125A Adjustable Moulded Case Circuit Breaker

125A Adjustable Moulded Case Circuit Breaker

125A Adjustable Moulded Case Circuit Breaker is one of CDADA's products, as a professional factory, our product is high-performance with IEC60947-2 certification for reliable power distribution. It features current-limiting design and modular accessories, easy to install and maintain. It combines adjustable tripping with patented contact structure, achieving long life and stable protection for industrial circuits.
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Thermal Magnetic Adjustable MCCB

Thermal Magnetic Adjustable MCCB

Source high quality Thermal Magnetic Adjustable MCCB from Shanghai DADA Electric, a professional manufacturer with 40+ years of experience. Our product is certified (CE, CB, ASTA), with adjustable thermal (70–100% In) & magnetic (5–10×In) settings. Ideal for precise protection in industrial panels. 250A to 1600A, 3P/4P, compact & globally compliant.
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Thermal Adjustable Moulded Case Circuit Breaker

Thermal Adjustable Moulded Case Circuit Breaker

Discover the CDADA DAM1 Series Thermal Adjustable Moulded Case Circuit Breaker from 贴the reliable factory, Shanghai DADA Electric—certified (ASTA, KEMA, CE) and adjustable thermal settings (70-100% In). Ideal for precise overload protection in industrial applications. Available in 3P/4P configurations up to 1600A at 400V/415V. Perfect for OEMs and bulk buyers.
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MCCB with Leakage Protection

MCCB with Leakage Protection

Source CDADA MCCB with Leakage Protection (DAM1L Series) from Shanghai DADA Electric, as a reliable factory, we can offer technical support and OEM services. 4P, 16–500A, adjustable earth leakage (30mA–1000mA), CE/CB/SEMKO certified. Ideal for fire & personal safety in buildings, tunnels & industrial sites.
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2P 4P Electronic Type RCBO

2P 4P Electronic Type RCBO

You can rest assured to choose CDADA as your 2P 4P Electronic Type RCBO (DABL-63) manufacturer and supplier. Our product is CE/CB/RoHS certified. Combines 30mA leakage + overload + short-circuit protection. 6kA, –25°C to +40°C, ideal for outdoor/garage circuits.
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Electronic Type Moulded Case Circuit Breaker

Electronic Type Moulded Case Circuit Breaker

Electronic Type Moulded Case Circuit Breaker is a product of CDADA, reliable manufacturer in China. Our product can offer intelligent, microprocessor-controlled protection with wide adjustment (thermal: 40–100% In, magnetic: 1.5–12×In). Unaffected by ambient temperature. Ideal for smart panels & critical infrastructure. Certified, compact, and scalable up to 1600A.
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Electromagnetic Residual Current Circuit Breaker

Electromagnetic Residual Current Circuit Breaker

As a reliable manufacturer, CDADA's Electromagnetic Residual current circuit breaker is IEC 61008-1 certified, 2P/4P, 16–100A, 10/30/100mA. Pure electromagnetic trip: no auxiliary power needed. IP20, 6kA, DIN rail. Ideal for harsh or unstable power environments.
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2P 4P Electromagnetic RCBO

2P 4P Electromagnetic RCBO

Source CDADA 2P 4P Electromagnetic RCBO (DABF-63) IEC-compliant, 30mA/100mA, 6kA. Pure magnetic trip: no electronics, no auxiliary power. Ideal for unstable grids, outdoor & critical circuits. CE/CB certified. You choose CDADA as your manufacturer and supplier, and get our OEM/ODM services.
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Type A Residual Current Circuit Breaker

Type A Residual Current Circuit Breaker

Buy CDADA Type A Residual Current Circuit breaker from Shanghai DADA Electric, we have over 40 years of experience, can be your supplier. EN/IEC 61008-1 certified, 2P/4P, 16–100A, 30mA/100mA options. Detects AC + pulsating DC leakage. IP20, DIN rail mount, surge-resistant. Ideal for modern homes & commercial panels.
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DIN Rail Moulded Case Circuit Breaker

DIN Rail Moulded Case Circuit Breaker

Source advanced DIN Rail Moulded Case Circuit Breaker (DAM3-160) from Shanghai DADA Electric, we are a professional supplier with own factory. This MCCB has compact size, up to 160A, 16kA breaking capacity. DIN rail mounted, IP30, IEC/EN 60947-2 certified. Ideal for residential & commercial panels. OEM & bulk orders welcome.
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Compact Moulded Case Circuit Breaker

Compact Moulded Case Circuit Breaker

CDADA, a relibale manufacturer and supplier since 1983, can offer high quality DAM3 Series Compact Moulded Case Circuit Breaker, miniature yet powerful, rated 16A–1600A, up to 70kA breaking capacity. Space-saving design reduces panel size by 25%. Ideal for OEMs & panel builders. CE & IEC certified.
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AC Type Circuit Breaker with Residual Current Operation

AC Type Circuit Breaker with Residual Current Operation

CDADA, a professional manufacturer with 40+ years of experience, can offer high quality AC TYPE Circuit Breaker with Residual Current Operation (DAM1L). 4P, 10–500A, CE/CB/SEMKO certified. True AC-type CBR for sinusoidal leakage only. Ideal for residential & industrial fire/personal protection.
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10KA AC Miniature Circuit Breaker

10KA AC Miniature Circuit Breaker

10KA AC Miniature Circuit Breaker is an advanced and high-performance product, offered by the reliable manufacturer CDADA, with CE, CB, ASTA, SEMKO, and ROHS certified. 1P/2P/3P, 6–63A, ideal for industrial & commercial panels. High 10kA breaking capacity, –40°C to +50°C operation, silver-alloy contacts. OEM & bulk orders welcome.
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6kA AC Miniature Circuit Breaker

6kA AC Miniature Circuit Breaker

Buy 6kA AC Miniature Circuit Breaker (DAB6-63) from Shanghai DADA Electric, we are a reliable manufacturer and supplier. This product is CE & CB certified, 1P/2P/3P/4P available, with B/C/D curves for home & light commercial use. Wide temp range (-40°C to +50°C), low thermal loss terminals. Ideal for residential panels.
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LRD Thermal Overload Relay

LRD Thermal Overload Relay

CDADA's LRD Thermal Overload Relay is a high performance product, 0.1–104A, CE compliant, with phase-loss, stall & long-start protection. Manual/auto reset, test button, and contactor-compatible (D09–D95). Ideal for motor safety in industrial control. Contact us for a factory quotation.
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JR28 Thermal Overload Relay

JR28 Thermal Overload Relay

CDADA is a professional manufacturer of advanced JR28 Thermal Overload Relay, 0.1–140A, CE compliant, with phase-loss, stall & long-start protection. Manual/auto reset, test button, and compatible with D9–D150 contactors. If you need OEM/ODM services, or want to get technical support, please contact us.
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GV3 80A Motor Protection Circuit Breaker

GV3 80A Motor Protection Circuit Breaker

Discover the CDADA GV3 80A Motor Protection Circuit Breaker, CE certified, with thermal overload, short-circuit, phase-loss & isolation. Features 690V rating, 110k cycles, and temperature compensation. Ideal for robust motor protection in industrial settings. Contact us for a factory direct price.
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GV2 2P Motor Protection Circuit Breaker

GV2 2P Motor Protection Circuit Breaker

Welcome to get advanced GV2 2P Motor Protection Circuit Breaker from CDADA, a reliable manufacturer and supplier in China. 0.1–32A, CE certified, with overload, short-circuit, phase-loss & isolation. Thermal compensation, 690V, 110k cycles. Ideal for compact motor control panels.
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F Contactor

F Contactor

If you are looking for a relibale manufacturer and supplier of F Contactor, you can choose CDADA from China, we have 40+ years of experience. IEC 60947-4-1 certified, 4P/3P, up to 1000A, AC-3/AC-4 rated. Controls motors up to 500kW. CE approved. Ideal for heavy industrial & infrastructure projects.
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DIN Rail Changeover Switch 125A

DIN Rail Changeover Switch 125A

Buy CDADA DIN Rail Changeover Switch 125A, as a manufacturer in China with 40+ years of experience, our product is IEC60947-3 certified, 3-position (I-O-II), for dual power source transfer up to 400V. Manual, DIN-mounted, ideal for generator backup & industrial panels.
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D Contactor

D Contactor

Shanghai DADA Electric is a reliable manufacturer and we have our own brands, CDADA. Our D Contactor (LC1-D Series) is IEC 60947-4-1 certified, 3P/4P, up to 620A, AC-3/AC-4 rated. Wide coil voltage options. We recommond this product for motor control & industrial automation, contact us for a quote.
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BCH8 Contactor

BCH8 Contactor

CDADA is a reliable supplier of BCH8 Contactor, we can offer technical support and warranty for our products. This contactor is silent, 16–125A, for lighting, HVAC & small motors. Complies with IEC61095/IEC60947-4-1. DIN-rail mounted, IP40 in panel, suitable to be used for smart buildings & public facilities.
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A Series Contactor

A Series Contactor

Discover CDADA A Series Contactor—compact, reliable, and versatile for motor & circuit control. Rated 9-370A, 4-200kW (AC-3). Supports wide coil voltages (100-250VAC/DC), ideal for global projects. CCC certified. As a professional factory in China, our products have warranty, and we can offer technical services.
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2P Changeover Switch

2P Changeover Switch

2P Changeover Switch is 16–125A, DIN-rail mounted, IEC60947-3 certified. If you are looking for professional manufacturer and supplier of this products, you can choose CADAD. Manual 3-position (I-O-II) for dual power source switching. It can be used for backup generator transfer, motor direction control & voltage measurement.
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Solar Pump Inverter

Solar Pump Inverter

Contact CDADA and let us be your manufacturer as well as supplier of Solar Pump Inverter. This product is 15kW—3-phase, MPPT-integrated, for irrigation & water supply. No grid needed. IP65 optional, dry-run protection, and remote monitoring. Ideal for farms & rural projects.
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1000V DC Moulded Case Circuit Breaker

1000V DC Moulded Case Circuit Breaker

CDADA is a reliable manufacturer in China, can offer 1000V DC Moulded Case Circuit Breaker worldwide. It is up to 800A, IEC-compliant, for solar PV & DC grids. 2P/4P options, 20–40kA breaking, with isolation & accessories. DIN or panel mount. Trusted by global solar integrators.
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250V DC Miniature Circuit Breaker

250V DC Miniature Circuit Breaker

CDADA is a good choice to be your supplier of DAB7-63 250V DC Miniature Circuit Breaker 1P, 1–63A, with 6kA breaking capacity. This product is ideal for solar PV, telecom & DC systems. DIN-rail mounted, with clear ON/OFF indicator and RoHS compliance. Please contact us to get a factory direct price.
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DC Inverter 0.75kW-630kW

DC Inverter 0.75kW-630kW

As a reliable supplier, CDADA's DC Inverter 0.75kW-630kW is industrial-grade, DSP-based vector control, 4 modes (SVC/VC/V/F/Torque), Modbus, and auto-tuning. For pumps, conveyors, extruders & high-precision drives. To get a factory direct price and OEM solution, you can contact us.
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TSM Iron Base Distribution Box

TSM Iron Base Distribution Box

Buy CDADA TSM Iron Base Distribution Box 4 to 36 circuits, IP40, transparent cover, iron base for secure MCB mounting. Ideal for residential & commercial panels. Durable ABS + metal frame, white or custom colors. CDADA is a relibale supplier and can offer direct price, welcome to send inquiry.
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MCCB Shunt Release

MCCB Shunt Release

Discover the CDADA MCCB Shunt Release for remote control of your circuit breaker operations. Available in 220V AC/DC, it's perfect for applications requiring immediate disconnection. Easy to install, with pre-connected wiring from the factory—just add your control signal. Ideal for industrial and commercial safety systems.
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MCCB Auxiliary Contact

MCCB Auxiliary Contact

CDADA is the manufacturer and supplier of MCCB Auxiliary Contact, this product can be your solution for monitoring and controlling circuit breaker states. Available in configurations like 2NO/2NC, it's ideal for signaling open/close status. Pre-wired for easy installation, perfect for industrial control systems. Trust CDADA for reliability and performance.
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MCB Shunt Release

MCB Shunt Release

Choose CDADA as your MCB Shunt Release supplier, this product is for remote control of your DAB7-63 circuit breakers. Available in 24V to 400V AC/DC, it ensures reliable operation within a wide voltage range. Ideal for emergency shutdowns and automation systems. Easy to install, with direct compatibility to CDADA's DAB7 series—no additional adapters needed.
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MCB Alarm and Auxiliary Contact

MCB Alarm and Auxiliary Contact

Buy CDADA MCB Alarm and Auxiliary Contact—dual-function module for DAB7-63 breakers. Combines 2 transfer contacts (auxiliary + alarm) in one compact unit. Ideal for remote status monitoring and fault signaling in panels. Easy left-side snap-on install. As a direct factory, OEM/wholesale pricing available.
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TSM Plastic Distribution Box

TSM Plastic Distribution Box

TSM Plastic Distribution Box 4 to 36 circuits, IP40, transparent PC cover, ABS body, offered by the professional manufacturer, CDADA. Surface or flush mount. Ideal for residential & light commercial use. Easy to install, elegant finish, bulk pricing available.
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CDADA Circuit Breaker Factory Tour - 60+ Patents and 30+ Senior Engineers Team

Who We Are?
Shanghai DADA Electric Co., Ltd. is a premier manufacturer and supplier of low-voltage electrical solutions based in China. With roots tracing back to 1983 in Zhejiang, our legacy spans over four decades of innovation in electrical safety. Established in 2004, we operate a 52,400 m² factory equipped with 9 automated production lines and stringent ISO 9001-certified processes.
As a globally recognized circuit breaker manufacturer, we hold 60+ patents and key international certifications (CE, CB, KEMA, ASTA). Annually producing 3+ million breakers, DADA Electric blends Chinese manufacturing excellence with cutting-edge R&D to deliver reliability worldwide.

CDADA Product Line - MCCB MCB RCCB RCBO Contactor for Industrial Electrical Protection

What We Do?
We specialize in designing, producing, and exporting high-performance circuit protection devices for diverse industries. As a top-tier factory and supplier, our portfolio includes:
Molded Case Circuit Breakers (MCCB): DAM1-DAM10 series for industrial automation.
Miniature Circuit Breakers (MCB): DAB6/DAB7 for residential/commercial safety.
Solar DC Breakers & RCCBs/RCBOs: Custom solutions for renewable energy systems.
OEM/ODM Components: Contactors, relays, and distribution boxes for HVAC, elevators, and UPS.
Our products power critical sectors:
✅ Industrial Manufacturing (machinery control)
✅ Renewable Energy (solar inverters, PV arrays)
✅ Infrastructure (airports, hospitals, data centers)
✅ Global Building Projects (offices, hotels, smart homes)

CDADA Global Export Markets - 45+ Countries 3M+ Annual Output CE CB KEMA Certified

Why Choose DADA?
Expertise & Trust:
◆ 40+ Years of Innovation: R&D-driven engineering (30+ specialists) with 60+ patents.
◆ Global Compliance: Certified to CE, CB, KEMA, RoHS, and CCC standards.
◆ Scalable Manufacturing: 3+ million units/year capacity with rapid lead times.
◆ Proven Authority: "Shanghai Famous Product" awardee; trusted by clients across 45+ countries.
◆ Transparent Supply Chain: From our ISO-certified factory in China to global ports (FOB/CIF/EXW).
Market Leadership:
√ 45% European exports; strong footprint in Belt & Road markets.
√ $20M+ export revenue (2023–2025) via 726+ shipments.
√ Exhibited at Hannover Messe, Middle East Electricity & global trade fairs.

CDADA 52400 sqm Circuit Breaker Factory

About UsAbout Us

CDADA: Trusted China Manufacturer of Low-Voltage Electricals

Shanghai DADA Electric Co., Ltd., established in 1983, is a professional manufacturer and exporter of low-voltage electrical products. With over 60 patents and comprehensive international certifications including CE, CB, CCC, KEMA, and ASTA, we specialize in MCCBs, MCBs, RCCBs/RCBOs, contactors, and solar DC equipment. Our 52,400㎡ factory houses 9 production lines, delivering over 3 million circuit breakers annually. We serve diverse industries such as power systems, building automation, and industrial manufacturing, offering flexible OEM/ODM solutions. Dedicated to innovation and quality, DADA Electric is committed to providing reliable, cost-effective electrical solutions worldwide.

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  • Established in
    1983 +
    years
  • Senior Engineer
    30 +
    People
  • National Patents
    60 +
    Patents
  • Annual Output
    3 +
    Million

NewsNews

CDADA Industry Insights: Latest Breaker Innovations, Trade Show Schedules & Export Trends – Stay Ahead with Our China R&D Center Updates.

What Made Shanghai Dada Electric’s Participation at Middle East Energy a Meaningful Success?

What Made Shanghai Dada Electric’s Participation at Middle East Energy a Meaningful Success?

Shanghai Dada Electric Co., Ltd. concluded a productive appearance at Middle East Energy in Dubai, using the exhibition as a practical platform for technical exchange, customer dialogue, and regional market learning. Rather than measuring success only through immediate transactions, the company viewed the event as an opportunity to understand how electrical protection requirements are changing across the Middle East and other international markets.

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How to choose the right circuit breaker?

How to choose the right circuit breaker?

Selecting a suitable circuit breaker requires a comprehensive evaluation of circuit parameters, load characteristics, installation environment, and protection requirements. The core considerations are ensuring the rated voltage matches the system voltage, the rated current is greater than the load current but less than the conductor current-carrying capacity, and the breaking capacity (Icu) is higher than the expected short-circuit current.

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What is the working principle of a circuit breaker?

What is the working principle of a circuit breaker?

The working principle of a circuit breaker revolves around the core logic of monitoring, judgment, and execution. Through its built-in tripping mechanism and arc-extinguishing system, it achieves normal circuit connection and disconnection control and rapid interruption of faulty circuits. Specifically, it can be divided into normal operating mode and fault protection mode. The arc-extinguishing system is a crucial auxiliary mechanism ensuring reliable tripping.

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Application of circuit breakers

Application of circuit breakers

Circuit breakers are core devices in power systems, enabling circuit switching control and automatic fault protection. They are widely used in all scenarios, from household electricity to high-voltage power grids. Their core functions are overload/short circuit/leakage protection, equipment safety, power supply stability, and fire and electric shock prevention.

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How Does a 6kA AC Miniature Circuit Breaker Improve Circuit Protection?

How Does a 6kA AC Miniature Circuit Breaker Improve Circuit Protection?

A 6kA AC Miniature Circuit Breaker is widely used in low-voltage distribution applications because its 6kA rated short-circuit breaking capacity provides a practical level of fault-current interruption for many residential, commercial, and light industrial circuits. However, the 6kA value is only one part of the selection process. Rated current, voltage, trip curve, pole configuration, installation environment, and applicable standards must also be evaluated.

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Why Is DC Circuit Protection Becoming Critical for the Future of Power Systems?

Why Is DC Circuit Protection Becoming Critical for the Future of Power Systems?

The global power industry is becoming increasingly dependent on direct current. Solar photovoltaic arrays, battery energy storage systems, electric vehicle charging stations, telecommunications equipment, and data centers all contain important DC sections. As these applications expand, circuit protection is moving from a supporting component to a central part of system safety. A DC circuit breaker must disconnect abnormal current quickly and safely, limiting damage to cables, converters, batteries, and connected equipment.

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