KFM630 630A MCCB 4P Molded Case Circuit Breaker

The KFM630 630A MCCB 4P 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.

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Features of KFM630 630A MCCB

  • 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
  • The 630A MCCB breaker can be mounted vertically or on the horizon
  • The 630A MCCB breaker has an isolation function, overload protection, earth fault protection,etc.
  • lEC60947-2 and GB14048.2 standards
  • Operating full load at 50℃

 

Specification of KFM630 630A MCCB

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℃

 

Applications of KFM630 630A MCCB

  • Power System Protection: Safeguard medium and low-voltage power systems against overloads, short circuits, and other faults.
  • Industrial Control: Protect motors, transformers, and other equipment in industrial control systems.
  • Building Applications: Ensure the safety of electrical systems in residential, commercial, and industrial buildings.
  • Communication Protection: Protect communication equipment and lines.
  • Renewable Energy: Guarantee the safe operation of electrical systems in new energy sources like solar and wind power.