China wholesale Mcb Magnetic Circuit Breaker Manufacturer – Sofielec 6-10kA MCB JVM1-63 4P 6-63A, IEC CB CE and RoHS certificate – Sofielec Electrical

Product Description

Low-voltage air circuit breaker, also known as automatic air switch or air switch, is a switching device. It is used to automatically break the circuit when the circuit is overloaded, short-circuited, or under-voltage. It can also be used to start the motor or switch the circuit infrequently. , Low-voltage air circuit breakers include universal circuit breakers, molded case circuit breakers, miniature circuit breakers, leakage circuit breakers and so on. 1. The structure of low-voltage circuit breaker:

1. The main contact connects or disconnects the main circuit. When the switch is closed manually or electrically, the main contact is closed, and the main contact is disconnected when the circuit is short-circuited, overloaded, or undervoltage.

2. Free trip mechanism:
The function of the free trip mechanism is to lock the main contact in the closing position after the main contact is closed, and the release is unlocked when the protection mechanism is activated.

3 Arc extinguishing system, when the main contact is disconnected, the iron grid in the fire extinguishing chamber will induce strong magnetism. Attract the arc into the grid and burn it in sections to protect the contacts from damage.

Construction and Feature

Protection against both overload and short circuit
High short-circuit capacity
Contact position indication
Applicable to terminal and pin/fork type busbar connection
Easy mounting onto 35mm DIN rail

Technical Data

· PoleNo.: 1, 1P+N，2,3,3P+N，4
· Rated voltage: AC 230/400V
· Rated current (A): 1, 2, 3, 4, 6, 10, 13, 16, 20, 25, 32, 40, 50, 63
· Tripping curve: B, C, D
· High short-circuit breaking capacity (lcn):10kA
· Rated frequency: 50/60Hz
· Energy limiting class: 3
· Rated impulse withstand voltage: 6.2kV
· Electromechanical endurance: 10000
· Contact position indication
· Connection terminal:
· Screw terminal
· Pillar terminal with clamp
· Connection capacity: Rigid conductor up to 25mm2
· Fastening torque: 2.0Nm
· Installation:
· On symmetrical DIN rail 35.5 mm
· Panel mounting
· Terminal Connection Height: 21mm

Overall & Installation Dimensions

Characteristic Curve

factory

certification