125A Electric Moulded Case Circuit Breaker

125A Electric moulded case circuit breaker

Saide® 125A Electric moulded case circuit breakers are critical electrical equipment specifically designed to protect low-voltage electrical systems from overcurrent, short circuits, and other electrical faults. They play an indispensable role in the power distribution system, ensuring that electrical equipment operates in a safe and reliable state.

Here are some key points about Saide® 125A Electric moulded case circuit breakers:

Function: The main function of the low-voltage circuit breaker is to quickly interrupt the current when an abnormality occurs in the circuit. This abnormal condition may be a current overload (i.e. exceeding the rated capacity of the circuit) or a short circuit (a sudden increase in current caused by a fault).

Trip Mechanism: The circuit breaker is equipped with a trip mechanism that detects abnormal current conditions and initiates opening of the circuit breaker contacts. Thermal trip units use a bimetallic strip that when overloaded with current generates heat causing it to bend, causing the contacts to open. The magnetic trip unit uses a solenoid to generate a magnetic field to trigger the trip mechanism when the current exceeds a preset threshold. Electronic trip devices rely on electronic sensors to measure current and provide accurate and adjustable trip settings.

Breaking Capacity: Breaking capacity refers to the maximum fault current that a circuit breaker can safely break without causing sustained damage. When selecting a circuit breaker, ensuring that it can handle the fault current expected in the system is an important consideration.

Low-voltage circuit breaker types: There are many types of low-voltage circuit breakers to choose from, including miniature circuit breakers (MCB), molded case circuit breakers (MCCB), and air circuit breakers (ACB) to meet different current requirements and application scenarios.

Selectivity and Coordination: Selectivity means that a circuit breaker can isolate a faulty part of the system while keeping other parts of the system energized and operational. Coordination involves setting the trip characteristics and delays of multiple circuit breakers in the system to ensure the correct sequence of trips during a fault.

Low voltage circuit breakers play a vital role in protecting electrical systems from damage and keeping people safe. They are available in a variety of sizes, types and travel characteristics to meet different applications and system requirements.

Shape and installation dimensions

Technical Data and Performance

If the sensitivity is set to 30mA,the stripper is instantaneous clasp.