400A 4P Moulded Case Circuit Breaker Thermal Switch Mccb

Usage and scope of application

The design of EZC series of MCCB reflects the latest current limiting principle and manufacturing technology, characterized by compact structure, full modularization, high breaking, and zero arcover. Its rated insulation voltage is 690V, rated operating voltage is AC50/60Hz, 440V and below, rated current up to 630A. It's used for generating infrequent conversion and infrequent startup of the motor.

Process characteristics and properties

• The frame of the box body is made of ten percent off profiles, and the high-quality and special three links are welded together into a whole. The structure is solid and reliable, and the appearance is graceful.
• The lower edge of the door plank is about 25mm away from the ground, and the rectangular frame fixed on the door panel is provided with a circular hole every 25mm, so as to not only enhance the strength of the door panel.
• The top cover, side plate, back slope and bottom plate are all screwdriver fasteners fixed, easy to assemble and disassemble, and the installation work inside the cabinet is more convenient.It can also be used to install electrical wiring harness, electrical appliances and other components.
  

Applicable working environment

1. The altitude is below 2000m
2. The circuit breaker can be at -25 C -70 C
3. It is able to tolerate moist air and is affected by salt fog, oil mist and mildew.
4. In explosive free medium, the medium is not enough to corrode metals and damage.
5. An insulated gas and a place of conductive dust
6. In a place without rain and snow