Circuit Protection

MCCB 400A 30-55kA 400/415V Circuit Breaker

Walax 400A molded case circuit breaker with 30–55kA breaking capacity at 400/415V. A rugged feeder breaker for commercial and industrial distribution where fault levels demand robust interruption.

30–55kA Withstand

Robust interruption for installations with elevated prospective fault current.

400A Rating

High-capacity feeder protection for commercial and industrial distribution.

400/415V Rated

Covers the standard three-phase distribution voltages across export markets.

Specifications

Technical Specifications

Standard ratings listed below – custom configurations available on request. Contact our engineers to confirm parameters for your market.

StandardIEC 60947-2 · CE
Rated current (In)400A
Poles3P / 4P
Rated voltageAC 400V / 415V (50/60Hz)
Breaking capacity30kA – 55kA
Trip typeThermal-magnetic / Electronic
MountingFixed / plug-in
Mechanical life≥ 10,000 operations
Ambient temperature-5°C to +40°C
Applications

Where These Breakers Ship

Commercial buildings, industrial plants and large distribution boards where a 400A feeder with high breaking capacity is required to handle substantial fault levels.

FAQ

Frequently Asked Questions

30–55kA depending on the specific frame and voltage.
Yes – 3P and 4P configurations are available.
Yes – electronic-trip versions are available for finer protection.
IEC 60947-2 type-test reports and CE documentation ship with every order.
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