Miniature Circuit Breakers

MCB4 Series

MINI CIRCUIT BREAKERS
  • DIN rail mount chassis
  • Current ratings up to 63A
  • C and D curve models
  • Wide range of accessories
  • Finger safe, captive screw, box lug terminals
  • UL489, UL486, IEC 60947-2
  • UL File # E477352

Applications:
  • Branch circuit protection to prevent damage to conductors
  • Protection of external loads such as motors, receptacles, HACR equipment, and others



MCB1 SERIES
SUPPLEMENTARY PROTECTORS
  • DIN rail mount chassis
  • Current ratings up to 63A
  • B, C, and D curve models
  • Wide range of accessories
  • Finger safe, captive screw, box lug terminals
  • UL1077, IEC 60947-2
  • UL File # E482436

Applications:
  • Individual component protection to keep parallel loads from tripping together
  • Installed within control circuits, lighting, and appliances
  • Protection of sensitive loads within an enclosure such as PLC units, power supplies, condensation heaters, fans, etc.


UL489
  • A UL489 Mini Circuit Breaker can be used for branch protection as the primary overcurrent device.
  • UL489 Mini Circuit Breakers can also be used as supplemental protection within an appliance or other electrical equipment.
UL1077
  • UL1077 Supplementary Protectors are designed to be used only within an appliance or other electrical equipment to provide supplemental protection or as a means to open the circuit.
  • Supplementary Protectors cannot be used in place of a UL489 Branch Circuit Protector to provide primary overcurrent protection.
  • If a supplementary protector can be removed from the circuit and maintain proper protection, then the supplementary protector is being used correctly.

UL489 & UL1077 MCBs
1 to 63A Models
B, C and D Trip Curves
from $17.35

UL489 MCBs
1 to 63A Models
C and D Trip Curves
from $28.10

UL489 Trip Devices, Auxiliaries
& Locking Devices
from $1.70

UL1077 Supplementary Protectors
1 to 63A Models
B, C, and D Trip Curves
from $17.35

UL1077 Trip Devices, Auxiliaries
& Locking Devices
 
from $1.40

IP65, Plastic
Mount MCBs or other
DIN 43880 profile devices
from $22.45