Miniature Circuit Breakers
PRODUCT FEATURES
MCB4 Series
MINIATURE CIRCUIT BREAKERS
Applications:
MINIATURE 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
Applications:
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 vs UL1077
UL489
- A UL489 Miniature Circuit Breaker can be used for branch protection as the primary overcurrent device.
- UL489 Miniature Circuit Breakers can also be used as supplemental protection within an appliance or other electrical equipment.
- 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.
