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QOU110Square D Circuit Breakers, QO SeriesItem NumberQOU110MFG Item Number340371SeriesQOProduct DescriptionThermal Magnetic Circuit Breaker,SpecificationsSpecifications Poles 1 Current Rating 10 A Protection Branch Circuit Terminals Included Line and Load Trip Unit Fixed Thermal / Fixed Magnetic Mounting Panel Neutral Pole No kAIC @ 120 VAC 10 kAIC @ 240 VAC 10 Terminal Type Box Terminal Auxiliary Switch No Shunt Trip No AvailabilityOrder by 5:00 PM ET and your package will ship the same day. -
HDL36125Square D Circuit Breakers, PowerPact H SeriesItem NumberHDL36125MFG Item Number531642SeriesPowerPact HProduct DescriptionPowerPact H Frame Molded CaseSpecificationsSpecifications Poles 3 Current Rating 125 A Terminals Included Line and Load Trip Unit Fixed Thermal / Fixed Magnetic Mounting Panel Neutral Pole No GFCI No Neutral Protection No 100% Rated No kAIC @ 240 VAC 25 kAIC @ 480 VAC 18 kAIC @ 600 VAC 14 kAIC @ 250 VDC 20 Terminal Type Lugs Included AvailabilityOrder by 5:00 PM ET and your package will ship the same day. -
HOM2200BBSquare D Circuit Breakers, Homeline SeriesItem NumberHOM2200BBMFG Item NumberHOM2200BBSeriesHomelineProduct DescriptionMINIATURE CIRCUIT BREAKESpecificationsSpecifications Poles 2 Current Rating 200 A Max Voltage 240 VAC Neutral Pole No GFCI No 100% Rated No Terminal Type Screw Auxiliary Switch No Shunt Trip No Undervoltage Release No Alarm Switch No Busbar No AvailabilityOrder by 5:00 PM ET and your package will ship the same day. -
HOMT1515Square D Circuit Breakers, Homeline SeriesItem NumberHOMT1515MFG Item Number665497SeriesHomelineProduct DescriptionMiniature Circuit Breaker 120/240VSpecificationsSpecifications Poles 1 Current Rating 15 A Max Voltage 240 VAC 100% Rated No Terminal Type Plug-On Auxiliary Switch No Shunt Trip No Undervoltage Release No Alarm Switch No Busbar No AvailabilityOrder by 5:00 PM ET and your package will ship the same day. -
M9F42105Square D Circuit Breakers, Multi 9 SeriesItem NumberM9F42105MFG Item Number541127SeriesMulti 9Product DescriptionMulti 9 Miniature Circuit Breaker,SpecificationsSpecifications Poles 1 Current Rating 5 A Max Voltage 277 VAC Protection Branch Circuit Trip Curve C Terminals Included Line and Load Trip Unit Fixed Thermal / Fixed Magnetic Mounting DIN Rail UL Standard 489 CSA Standard 22.2 IEC Standard 60947-2 Neutral Pole No kAIC @ 120 VAC 14 kAIC @ 240 VAC 14 kAIC @ 277 VAC 10 kAIC @ 60 VDC 10 Terminal Type Screw Auxiliary Switch No Shunt Trip No AvailabilityOrder by 5:00 PM ET and your package will ship the same day. -
M9F42110Square D Circuit Breakers, Multi 9 SeriesItem NumberM9F42110MFG Item Number606156SeriesMulti 9Product DescriptionMulti 9-C60SP MCB, 1P, 10 A, CSpecificationsSpecifications Poles 1 Current Rating 10 A Max Voltage 277 VAC Protection Branch Circuit Trip Curve C Terminals Included Line and Load Trip Unit Fixed Thermal / Fixed Magnetic Mounting DIN Rail UL Standard 489 CSA Standard 22.2 IEC Standard 60947-2 Neutral Pole No kAIC @ 120 VAC 14 kAIC @ 240 VAC 14 kAIC @ 277 VAC 10 kAIC @ 60 VDC 10 Terminal Type Screw Auxiliary Switch No Shunt Trip No AvailabilityOrder by 5:00 PM ET and your package will ship the same day. -
QOB320Square D Circuit Breakers, QO SeriesItem NumberQOB320MFG Item Number428399SeriesQOProduct DescriptionMiniature Circuit Breaker 240V 20ASpecificationsSpecifications Poles 3 Current Rating 20 A Max Voltage 240 VAC Neutral Protection No 100% Rated No kAIC @ 120 VAC 10 kAIC @ 240 VAC 10 Terminal Type Bolt-On Auxiliary Switch No Shunt Trip No Undervoltage Release No Alarm Switch No Busbar No Availability -
9422A1Square D Circuit Breakers, 942 SeriesItem Number9422A1MFG Item Number531625Series942Product DescriptionOperating Mechanism Handle NEMASpecificationsSpecifications 100% Rated No Auxiliary Switch No Shunt Trip No Undervoltage Release No Alarm Switch No Busbar No AvailabilityOrder by 5:00 PM ET and your package will ship the same day. -
EGB34020Square D Circuit Breakers, EGB SeriesItem NumberEGB34020MFG Item Number529727SeriesEGBProduct DescriptionMiniature Circuit Breaker 480Y/277VSpecificationsSpecifications Poles 3 Current Rating 20 A Max Voltage 277/480 VAC Protection Ground Fault Trip Unit Fixed Thermal / Fixed Magnetic 100% Rated No kAIC @ 120 VAC 65 kAIC @ 240 VAC 65 kAIC @ 277 VAC 35 kAIC @ 277/480 VAC 35 Terminal Type Bolt-On Auxiliary Switch No Shunt Trip No Undervoltage Release No Alarm Switch No Busbar No Availability -
ECB24030G3Square D Circuit Breakers, Powerlink SeriesItem NumberECB24030G3MFG Item Number117032SeriesPowerlinkProduct DescriptionPowerlink G3 Controllable CircuitSpecificationsSpecifications Poles 2 Current Rating 30 A Max Voltage 480 VAC Trip Unit Fixed Thermal / Fixed Magnetic Electronic Trip Unit LI Mounting Panel 100% Rated No kAIC @ 277/480 VAC 14 Terminal Type Bolt-On Auxiliary Switch No Shunt Trip No Undervoltage Release No Alarm Switch No Busbar No Availability
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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.