KFM630 Molded Case Circuit Breaker

The KFM630 Molded Case Circuit Breaker is suitable for DC systems with rated working DC voltage below 1000V and rated working current up to 10A-1250A. The circuit breaker has protection functions such as overload, short circuit and under voltage, which can protect lines and power supply equipment from over-voltage damage due to overvoltage and overcurrent. Widely used in power generation, power transmission and transformation, new energy, communications, construction and other fields.

Contact us

Features

  • Used in DC system with no earthing, one pole earthed, or neutral point earthed
  • Maximum carry 1250A at several breakers operated in parallel.
  • Arcing quench system integrates VJC and lSTAC technologies
  • Operating full load at 50℃
  • Breaker can be mounted vertically, or in horizon
  • The breaker has isolation function,
  • lEC60947-2 and GB14048.2 standards

Applications

  • In medium and low voltage power system
  • Protect circuits from overload, short circuit and other faults
  • In industrial control system
  • Protect motors, transformers and other equipment
  • Used in household, commercial and industrial building electrical
  • Used to protect communication equipment, communication lines, etc.
  • Electrical system of new energy equipment such as solar energy and wind energy
  • Guarantee the safe operation of electrical equipment

 

 

Specification

Parameter Value
Shell frame grade current 630
Ripping device rated current 100、125、140、160、180、200、225、250
Number of poles 4
Rated insulation voltage 1000V
Rated operational voltage DC 1000V
Rated impulse withstand voltage 8000V
Rated ultimate short-circuit breaking capacity 40
Rated operational short-circuit breaking capacity 25
Mechanical life 10000
Electrical life 5000
Flashover distance ≯50
Dimension 142X165X103mm
Overload protection 250-630 A
Protection function 100-250 A

250-360 A

Action tolerance ±20%
Work environment -40℃~+70℃