2P 125A Molded Case Circuit Breaker

In power systems of commercial centers, small factories, or large equipment, 125A level current carries critical operational loads. The SPX durable 2P 125A Molded Case Circuit Breaker is designed as a "power gate" for this type of core circuit. It is not only a circuit switch, but also a protection system that integrates precise measurement, intelligent judgment, and strong execution. When there is an overload or fatal short circuit fault in the circuit, it can automatically cut off the current with a response speed of milliseconds, effectively preventing electrical fires and equipment damage, protecting the stability of the upstream power grid, and is an important link in the distribution architecture.

Features:

The continuous current carrying capacity of 125A can support a single power load of about 27.5kW (220V), meeting the single-phase total incoming line requirements of small and medium-sized commercial places or large equipment.
The 2P 125A Molded Case Circuit Breaker typically has a maximum short-circuit breaking capacity of up to 25kA to 50kA or even higher, capable of withstanding and safely cutting off huge short-circuit currents caused by lower level equipment failures, preventing the spread of accidents, and ensuring the integrity of the entire distribution system.
Mature thermal (bimetallic) and electromagnetic (trip coil) combinations are used to achieve inverse time overload protection and instantaneous short circuit protection, respectively, with precise action values and stable characteristics.
2P 125A Molded Case Circuit Breaker provides standard curves such as C-type and D-type, or fixed or adjustable thermal magnetic trip units with wider industrial applications. Users can match and optimize protection selectivity based on load properties (such as conventional power distribution and motor main circuit).
The outer shell is made of high-strength, flame-retardant, and impact resistant insulation materials, and the internal contact system is made of high-quality materials such as silver alloy, equipped with an efficient arc extinguishing chamber to ensure long electrical life and high reliability under frequent operation and high current interruption.
The handle position clearly indicates the "closed", "open", and "fault release" status. As a visible disconnection point, it complies with safety regulations and provides reliable electrical isolation for equipment maintenance.

Typical application scenarios

2P 125A Molded Case Circuit Breaker is used as a single-phase main incoming circuit breaker for small and medium-sized shops, restaurants, offices, and community service centers.
2P 125A Molded Case Circuit Breaker provides independent incoming line protection and isolation for large central air conditioning outdoor units, commercial baking equipment, electroplating power supplies, experimental furnaces, and other high-power single-phase equipment.
In automation equipment and production line control cabinets, it serves as the front-end main switch and protective device for controlling transformers and large capacity drives (such as servo systems).
As an AC side protection switch for small photovoltaic grid cages and medium power AC charging piles.

The SPX SM30-125 series of Molded Case Circuit Breakers Parameter

Operating characteristics

Front view

Molded Case Circuit Breakers Side view

FAQ

Does your company have an office in Shanghai or Guangzhou?

Our company currently has only one production site, which is a common layout of production enterprises. We are able to concentrate our resources more closely to facilitate the management and monitoring of the production process.

Can I only buy some spare parts from you?

We offer the option of purchasing individual parts. This facilitates component replacement during product maintenance or assembly line work as needed.

Can you deliver your equipment to my warehouse in Guangzhou?

Of course, you may contact any of your authorized agents at any time to verify delivery details and ensure that your product is delivered safely and reliably.