GDDCM1-400 DC MCCB Overview

O GDDCM1-400 DC MCCB is a high-current molded case circuit breaker developed for overload and short-circuit protection in low-voltage DC distribution systems. With a 400A rated current, 2-pole configuration, e 1000V DC rated operating voltage, it is suitable for applications where conventional miniature circuit breakers cannot provide sufficient current capacity or fault interruption performance.

The breaker uses a robust molded case construction designed to provide mechanical strength, insulation performance, and reliable switching in demanding electrical installations. Its rated insulation voltage of 1500V provides additional electrical margin for high-voltage DC systems, while the 12kV impulse withstand voltage helps improve resistance to transient overvoltage.

O GDDCM1-400 DC MCCB provides a rated ultimate short-circuit breaking capacity (Icu) of 20kA. Its service short-circuit breaking capacity (Ics) is specified as 100% of Icu, allowing the breaker to maintain strong fault interruption capability in industrial and renewable-energy applications.

According to the product marking, the breaker complies with IEC60947-2, making it suitable for professional low-voltage circuit protection systems. The front operating handle provides clear ON/OFF control, and the molded housing is designed for integration into DC distribution cabinets, battery systems, photovoltaic equipment, and industrial power panels.

For distributors, panel builders, solar equipment manufacturers, and project buyers, the GDDCM1-400 DC MCCB provides a practical 400A protection solution for high-current DC circuits requiring reliable isolation and short-circuit protection.

Características do produto

• 2P DC molded case circuit breaker
• Rated current: 400A
• Rated operating voltage: 1000V DC
• Rated insulation voltage: 1500V
• Rated impulse withstand voltage: 12kV
• Ultimate breaking capacity Icu: 20kA
• Service breaking capacity Ics: 100% Icu
• Instantaneous setting Ii: 10 × In
• Utilization category: Cat A
• Reference temperature marking: 40°C
• Strong molded case construction
• Clear manual ON/OFF operation
• Suitable for high-current DC distribution
• Complies with IEC60947-2

Especificações Técnicas

Aplicações

O GDDCM1-400 DC MCCB is suitable for high-current DC systems that require reliable overload, isolation, and short-circuit protection.

Typical applications include:

• Solar photovoltaic DC distribution
• Battery energy storage systems
• High-capacity battery banks
• DC combiner and distribution cabinets
• Industrial DC power systems
• DC control panels
• Renewable energy equipment
• Charging and power conversion equipment
• Large DC power supplies
• OEM electrical assemblies

Its combination of 400A current capacity, 1000V DC rating, e 20kA Icu makes it particularly suitable for higher-power DC installations.

Why Choose GA&DA GDDCM1-400?

O GDDCM1-400 DC MCCB is designed for applications where higher current capacity and stronger interruption performance are required than standard DC miniature circuit breakers can provide.

As principais vantagens incluem:

• 400A high-current protection
• 1000V DC operating capability
• 1500V insulation voltage
• 12kV impulse withstand performance
• 20kA ultimate breaking capacity
• Ics equal to 100% of Icu
• IEC60947-2 compliance
• Durable molded case structure
• Suitable for renewable-energy and industrial DC projects
• OEM and bulk purchasing support

GA&DA can support electrical distributors, panel builders, system integrators, and project buyers with product selection and volume supply.

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