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0628040663LS Electric Circuit Breakers, MCB Series
Item Number0628040663MFG Item NumberBK63HU-3P-D6A-10kA-480Y/277VAC-UL489SeriesMCBProduct DescriptionMiniature Circuit Breaker UL489,SpecificationsSpecifications Poles 3 Current Rating 6 A Max Voltage 480/277 VAC Protection Short-Circuit Trip Curve D Trip Unit Fixed Thermal / Fixed Magnetic Mounting DIN Rail UL Standard 489 Neutral Pole No GFCI No 100% Rated No Terminal Type Screw Auxiliary Switch Optional Shunt Trip Optional Undervoltage Release Optional Alarm Switch Optional Busbar No AvailabilityOrder by 5:00 PM ET and your package will ship the same day. -
0626034563LS Electric Circuit Breakers, MCB SeriesItem Number0626034563MFG Item NumberBK63H-1P-B3A-6kA-277VAC-UL1077SeriesMCBProduct DescriptionMiniature Circuit Breaker UL1077,SpecificationsSpecifications Poles 1 Current Rating 3 A Max Voltage 277 VAC Protection Short-Circuit Trip Curve B Trip Unit Fixed Thermal / Fixed Magnetic Mounting DIN Rail UL Standard 1077 Neutral Pole No GFCI No 100% Rated No Terminal Type Screw Auxiliary Switch Optional Shunt Trip Optional Undervoltage Release Optional Alarm Switch Optional Busbar No AvailabilityOrder by 5:00 PM ET and your package will ship the same day. -
0626034663LS Electric Circuit Breakers, MCB SeriesItem Number0626034663MFG Item NumberBK63H-1P-B4A-6kA-277VAC-UL1077SeriesMCBProduct DescriptionMiniature Circuit Breaker UL1077,SpecificationsSpecifications Poles 1 Current Rating 4 A Max Voltage 277 VAC Protection Short-Circuit Trip Curve B Trip Unit Fixed Thermal / Fixed Magnetic Mounting DIN Rail UL Standard 1077 Neutral Pole No GFCI No 100% Rated No Terminal Type Screw Auxiliary Switch Optional Shunt Trip Optional Undervoltage Release Optional Alarm Switch Optional Busbar No AvailabilityOrder by 5:00 PM ET and your package will ship the same day. -
0626035663LS Electric Circuit Breakers, MCB SeriesItem Number0626035663MFG Item NumberBK63H-1P-C1A-6kA-277VAC-UL1077SeriesMCBProduct DescriptionMiniature Circuit Breaker UL1077,SpecificationsSpecifications Poles 1 Current Rating 1 A Max Voltage 277 VAC Protection Short-Circuit Trip Curve C Trip Unit Fixed Thermal / Fixed Magnetic Mounting DIN Rail UL Standard 1077 Neutral Pole No GFCI No 100% Rated No Terminal Type Screw Auxiliary Switch Optional Shunt Trip Optional Undervoltage Release Optional Alarm Switch Optional Busbar No AvailabilityOrder by 5:00 PM ET and your package will ship the same day. -
0626036963LS Electric Circuit Breakers, MCB SeriesItem Number0626036963MFG Item NumberBK63H-1P-D1A-6kA-277VAC-UL1077SeriesMCBProduct DescriptionMiniature Circuit Breaker UL1077,SpecificationsSpecifications Poles 1 Current Rating 1 A Max Voltage 277 VAC Protection Short-Circuit Trip Curve D Trip Unit Fixed Thermal / Fixed Magnetic Mounting DIN Rail UL Standard 1077 Neutral Pole No GFCI No 100% Rated No Terminal Type Screw Auxiliary Switch Optional Shunt Trip Optional Undervoltage Release Optional Alarm Switch Optional Busbar No AvailabilityOrder by 5:00 PM ET and your package will ship the same day. -
0626037063LS Electric Circuit Breakers, MCB SeriesItem Number0626037063MFG Item NumberBK63H-1P-D2A-6kA-277VAC-UL1077SeriesMCBProduct DescriptionMiniature Circuit Breaker UL1077,SpecificationsSpecifications Poles 1 Current Rating 2 A Max Voltage 277 VAC Protection Short-Circuit Trip Curve D Trip Unit Fixed Thermal / Fixed Magnetic Mounting DIN Rail UL Standard 1077 Neutral Pole No GFCI No 100% Rated No Terminal Type Screw Auxiliary Switch Optional Shunt Trip Optional Undervoltage Release Optional Alarm Switch Optional Busbar No AvailabilityOrder by 5:00 PM ET and your package will ship the same day. -
0626037163LS Electric Circuit Breakers, MCB SeriesItem Number0626037163MFG Item NumberBK63H-1P-D3A-6kA-277VAC-UL1077SeriesMCBProduct DescriptionMiniature Circuit Breaker UL1077,SpecificationsSpecifications Poles 1 Current Rating 3 A Max Voltage 277 VAC Protection Short-Circuit Trip Curve D Trip Unit Fixed Thermal / Fixed Magnetic Mounting DIN Rail UL Standard 1077 Neutral Pole No GFCI No 100% Rated No Terminal Type Screw Auxiliary Switch Optional Shunt Trip Optional Undervoltage Release Optional Alarm Switch Optional Busbar No AvailabilityOrder by 5:00 PM ET and your package will ship the same day. -
0626037363LS Electric Circuit Breakers, MCB SeriesItem Number0626037363MFG Item NumberBK63H-1P-D6A-6kA-277VAC-UL1077SeriesMCBProduct DescriptionMiniature Circuit Breaker UL1077,SpecificationsSpecifications Poles 1 Current Rating 6 A Max Voltage 277 VAC Protection Short-Circuit Trip Curve D Trip Unit Fixed Thermal / Fixed Magnetic Mounting DIN Rail UL Standard 1077 Neutral Pole No GFCI No 100% Rated No Terminal Type Screw Auxiliary Switch Optional Shunt Trip Optional Undervoltage Release Optional Alarm Switch Optional Busbar No AvailabilityOrder by 5:00 PM ET and your package will ship the same day. -
0626037963LS Electric Circuit Breakers, MCB SeriesItem Number0626037963MFG Item NumberBK63H-1P-D40A-6kA-277VAC-UL1077SeriesMCBProduct DescriptionMiniature Circuit Breaker UL1077,SpecificationsSpecifications Poles 1 Current Rating 40 A Max Voltage 277 VAC Protection Short-Circuit Trip Curve D Trip Unit Fixed Thermal / Fixed Magnetic Mounting DIN Rail UL Standard 1077 Neutral Pole No GFCI No 100% Rated No Terminal Type Screw Auxiliary Switch Optional Shunt Trip Optional Undervoltage Release Optional Alarm Switch Optional Busbar No AvailabilityOrder by 5:00 PM ET and your package will ship the same day. -
0626032263LS Electric Circuit Breakers, MCB SeriesItem Number0626032263MFG Item NumberBK63H-1P-C10A-10kA-120/240VAC-UL1077SeriesMCBProduct DescriptionMiniature Circuit Breaker UL1077,SpecificationsSpecifications Poles 1 Current Rating 10 A Max Voltage 240 VAC Protection Short-Circuit Trip Curve C Trip Unit Fixed Thermal / Fixed Magnetic Mounting DIN Rail UL Standard 1077 Neutral Pole No GFCI No 100% Rated No Terminal Type Screw Auxiliary Switch Optional Shunt Trip Optional Undervoltage Release Optional Alarm Switch Optional Busbar No AvailabilityOrder by 5:00 PM ET and your package will ship the same day.
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Circuit Protection
Circuit breakers and fuses protect against overload and short circuits for all types of applications.
A circuit breaker is an automatically-operated electrical switch designed to protect an electrical circuit from damage caused by excess current, typically resulting from an overload or short circuit. The circuit breaker trips to interrupt the circuit, and be reset and reused.
Fuses provide the same protections. If too much current flows through the fuse, a metal link in the fuse body will melt and interrupt the circuit. A fuse can only trip and open the circuit once, so it must be replaced or repaired to complete the circuit again. Fuses are typically installed in fuse blocks, either for storage or to consolidate fuses in one, easily maintained location.
A circuit breaker is an automatically-operated electrical switch designed to protect an electrical circuit from damage caused by excess current, typically resulting from an overload or short circuit. The circuit breaker trips to interrupt the circuit, and be reset and reused.
Fuses provide the same protections. If too much current flows through the fuse, a metal link in the fuse body will melt and interrupt the circuit. A fuse can only trip and open the circuit once, so it must be replaced or repaired to complete the circuit again. Fuses are typically installed in fuse blocks, either for storage or to consolidate fuses in one, easily maintained location.