Chint NXB-125 100A 125A miniature circuit breaker is a terminal power distribution protection device with excellent performance and wide application. It is commonly used in ASIC mining farms, PDU power units, industrial plants, independent electrical equipment, etc. When multiple high-power electrical appliances are used simultaneously, causing the current to exceed the circuit breaker's rated current, the circuit breaker will trip in time to provide overload and short-circuit protection for the equipment to ensure stable operation.

The NXB-125 circuit breaker adopts a white plastic shell with a simple appearance, good insulation performance, and mechanical strength. The shell material is flame retardant and can effectively prevent the spread of fire.

Technical parameters:

Name: Miniature circuit breaker

Model: NXB-125

Number of poles: 1P, 2P, 3P, 4P

Electromagnetic release type: C, D

Rated current: 100A, 125A

Rated voltage: 230V (1P), 400V (2P, 3P, 4P)

Breaking capacity: 10kA

Wiring method: Pressure plate wiring

Installation method: Guide rail installation

Mechanical life: 20,000 times

Electrical life: 6,000 times (100A); 4000 times (125A)

Rated ultimate short-circuit breaking capacity: 10000A

Rated operating short-circuit breaking capacity: 7500A

Rated impulse withstand voltage: 4kV

Product functions:

1) Overload protection: When an overload current appears in the circuit, that is, the current exceeds the rated current of the circuit breaker, the circuit breaker will automatically trip after a certain period and cut off the circuit to prevent electrical equipment from being damaged due to long-term overload and to avoid safety accidents such as fire caused by overheating of the line. For example, the circuit breaker will operate when the load current exceeds 100A or 125A for a long time.

2) Short-circuit protection: Once a short-circuit fault occurs in the circuit, the short-circuit current will increase significantly instantly. The circuit breaker can quickly detect it and trip quickly to cut off the circuit, thereby protecting electrical equipment and lines from damage by short-circuit current and preventing serious consequences such as electrical fires and equipment burnout caused by short-circuit.

3) Undervoltage protection: When the power supply voltage is lower than a certain value, the circuit breaker will automatically trip to protect the electrical equipment from being unable to work normally due to low voltage or being damaged due to overload operation.

4) Long electrical life: The electrical life of the NXB-125 circuit breaker is 6000 times (100A) and 4000 times (125A), which can meet the requirements of long-term and frequent use.

5) Long mechanical life: The mechanical life can reach 20,000 times, with good durability and reliability, reducing the possibility of failure due to frequent operation or long-term use.

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Wiring diagram: