Molded Case Circuit Breaker 125A 1P

Molded case circuit breaker 125A 1P is suitable for high-current single-pole protection

In industrial control, new energy and large-scale building power distribution systems, there are often high-power single-phase circuits that require independent protection, or working scenarios where each phase in a three-phase system needs to be independently disconnected and protected. The molded case circuit breaker 125A 1P is precisely designed for such professional demands. It adopts a high-performance plastic shell structure and integrates a powerful breaking capacity within a single pole width, providing a reliable solution for phase separation protection of single-phase high-current loads or three-phase systems.

Technical specifications

Parameter item	Specification description
Product model	molded case circuit breaker 125A 1P
Polar number	1P
Rated current	125A
Rated working voltage	230V AC / 400V AC 50/60Hz
Rated insulation voltage	690V AC
Trip device type	Thermal magnetic trip unit
Installation method	Supports rail mounting or fixed mounting

Application scenarios

• New energy systems: Overcurrent and short-circuit protection for the single-phase output side of photovoltaic inverters and the single-phase access points of energy storage systems (ESS).
• Building power distribution: In large commercial complexes, it provides protection for single 220V large-capacity circuits that are centrally set up (such as large advertising lighting and electric curtain motor groups).
• Equipment matching: As an OEM component, it is integrated into large electrical control cabinets, generator control panels and other equipment.

FAQ

Q：Can they be used in parallel to increase the current rating?

A：Absolutely not recommended. The parallel use of circuit breakers will lead to uneven current distribution and fail to ensure synchronous tripping, which is a serious safety hazard. If a larger current is required, a single circuit breaker of the corresponding rated current rating should be selected.