40 A Circuit Breaker 42

Reset All

Part	Manufacturer	Circuit Protection Type	Mounting Feature	Rated AC Voltage	Rated DC Voltage	Rated Current	Terminal Shape	Minimum Operating Temperature	Rated Breaking Capacity	Trip Time/Delay	Additional Features	Actuator Type	Packing Method	Body Length/Diameter	Body Width	Environmental Characteristics	Dimensions	Circuit Function	Body Height	Reference Standard	No. of Poles	Maximum Operating Temperature	Blow Characteristic
XT1NU3040AFF000XXX	Abb	Thermal Magnetic Circuit Breaker	DIN Rail Mount	347 V		40 A	Snap On		18 kA					5.118 in (130 mm)	3 in (76.2 mm)		5.118 x 3 x 2.756 in (130 x 76.2 x 70 mm)	Trip	2.756 in (70 mm)	CSA; UL	3
236404	Eaton Corporation	Thermal Circuit Breaker	Panel Mount	400 V		40 A	Screw	-25 °C (-13 °F)	10 kA							IP20		Trip			3	75 °C (167 °F)
420362	Legrand	Thermal Circuit Breaker	DIN Rail Mount	400 V		40 A	Snap On	-25 °C (-13 °F)	50 kA			Handle	Bulk	6.496 in (165 mm)	4.134 in (105 mm)			Trip	3.937 in (100 mm)	IEC	3	70 °C (158 °F)
3RV1342-4FC10	Siemens	Magnetic Circuit Breaker	DIN Rail Mount	690 V		40 A	Screw And Snap On	-20 °C (-4 °F)	12 kA			Rotary Handle		6.496 in (165 mm)	2.756 in (70 mm)	IP20	6.496 x 2.756 x 6.85 in (165 x 70 x 174 mm)	Trip	6.85 in (174 mm)		3	60 °C (140 °F)
184040F-011	Eaton Corporation	Thermal Circuit Breaker	Panel Mount		30 V	40 A	Screw	-32 °C (-25.6 °F)				Lever		2.89 in (73.41 mm)	1.9 in (48.26 mm)			Trip	1.44 in (36.58 mm)	SAE; UL	1	82 °C (179.6 °F)
3RV2021-4FA10	Siemens	Magnetic Circuit Breaker	DIN Rail Mount	690 V		40 A	Screw And Snap On	-20 °C (-4 °F)	2 kA			Rotary Handle		3.819 in (97 mm)	1.772 in (45 mm)	IP20	3.819 x 1.772 x 3.819 in (97 x 45 x 97 mm)	Trip	3.819 in (97 mm)		3	40 °C (104 °F)
EP103ULC40	Abb	Thermal Circuit Breaker	DIN Rail Mount	480 V	110 V	40 A	Snap On	-25 °C (-13 °F)	10 kA			Toggle Handle		3.386 in (86 mm)	2.126 in (54 mm)	IP20; IP40		Trip	2.677 in (68 mm)	CE; CSA; UL	3	55 °C (131 °F)
FAZ-B40/2-NA	Eaton Corporation	Thermal Magnetic Circuit Breaker	DIN Rail Mount	240 V		40 A	Snap On		10 kA			Toggle					1.39 in (35.3 mm)	Manual On/Off			2		Low Inrush
184040F-031	Eaton Corporation	Thermal Circuit Breaker	Panel Mount		30 V	40 A	Screw	-32 °C (-25.6 °F)				Lever		2.89 in (73.41 mm)	1.9 in (48.26 mm)			Trip	1.44 in (36.58 mm)	SAE; UL	1	82 °C (179.6 °F)
184040F-041	Eaton Corporation	Thermal Circuit Breaker	Panel Mount		30 V	40 A	Screw	-32 °C (-25.6 °F)				Lever		2.89 in (73.41 mm)	1.9 in (48.26 mm)			Trip	1.44 in (36.58 mm)	SAE; UL	1	82 °C (179.6 °F)
FAZ-C40/3	Eaton Corporation	Thermal Magnetic Circuit Breaker	DIN Rail Mount	480 V	96 V	40 A	Snap On	-40 °C (-40 °F)	15 kA			Toggle		3.15 in (80 mm)	2.091 in (53.1 mm)	IP20		Manual On/Off	2.362 in (60 mm)	CCC; CE; CSA; IEC; UL; VDE	3	75 °C (167 °F)	Short
3RV1041-4FA10	Siemens	Thermal Magnetic Circuit Breaker	DIN Rail Mount	690 V		40 A	Screw And Snap On	-20 °C (-4 °F)	6 kA			Rotary Handle		6.496 in (165 mm)	2.756 in (70 mm)	IP20	6.496 x 2.756 x 6.85 in (165 x 70 x 174 mm)	Trip	6.85 in (174 mm)		3	60 °C (140 °F)
3RV2031-4UA15	Siemens	Thermal Magnetic Circuit Breaker	DIN Rail And Panel Mount	690 V		40 A	Screw And Snap On	-20 °C (-4 °F)	2 kA			Handle		5.512 in (140 mm)	2.165 in (55 mm)	IP00; IP20	5.512 x 2.165 x 5.882 in (140 x 55 x 149.4 mm)	Trip	5.882 in (149.4 mm)	ATEX; CCC; CE; CSA; EAC; IECEX; KC; UL; VDE	3	60 °C (140 °F)	Instantaneous
5SV3314-6KK12	Siemens	Equipment Leakage Circuit Breaker	DIN Rail Mount	230 V		40 A	Screw And Snap On		10 kA			Handle		3.543 in (90 mm)	1.417 in (36 mm)	IP20	3.543 x 1.417 x 2.756 in (90 x 36 x 70 mm)	Trip	2.756 in (70 mm)		2	70 °C (158 °F)
W93-X112-40	TE Connectivity	Magnetic Circuit Breaker	Panel Mount	277 V		40 A	Stud	-40 °C (-40 °F)	5 kA	2.2 s		Toggle		2.5 in (63.5 mm)	2.25 in (57.15 mm)			Series Trip	1.845 in (46.86 mm)		3	85 °C (185 °F)
243304	Eaton Corporation	Thermal Circuit Breaker	DIN Rail Mount	400 V	48 V	40 A	Snap On	-25 °C (-13 °F)	4.5 kA			Handle	Bulk	3.15 in (80 mm)	2.067 in (52.5 mm)	IP20		Trip	2.579 in (65.5 mm)	EN; IEC	3	75 °C (167 °F)
5SV3314-6	Siemens	Equipment Leakage Circuit Breaker	DIN Rail Mount	230 V		40 A	Screw And Snap On		10 kA			Handle		3.543 in (90 mm)	1.417 in (36 mm)	IP20	3.543 x 1.417 x 2.756 in (90 x 36 x 70 mm)	Trip	2.756 in (70 mm)		2	70 °C (158 °F)
5SV3314-6KK01	Siemens	Equipment Leakage Circuit Breaker	DIN Rail Mount	230 V		40 A	Screw And Snap On		10 kA			Handle		3.543 in (90 mm)	1.417 in (36 mm)	IP20	3.543 x 1.417 x 2.756 in (90 x 36 x 70 mm)	Trip	2.756 in (70 mm)		2	70 °C (158 °F)
W93-X112-40V	TE Connectivity	Magnetic Circuit Breaker	Panel Mount	250 V		40 A	Stud	-40 °C (-40 °F)	2 kA	2.2 s		Toggle		2.5 in (63.5 mm)	0.75 in (19.05 mm)			Series Trip	1.845 in (46.86 mm)		3	85 °C (185 °F)
420372	Legrand	Thermal Circuit Breaker	DIN Rail Mount	400 V		40 A	Snap On	-25 °C (-13 °F)	50 kA			Handle	Bulk	6.496 in (165 mm)	5.512 in (140 mm)			Trip	3.937 in (100 mm)	IEC	4	70 °C (158 °F)
5SV3344-6KL	Siemens	Equipment Leakage Circuit Breaker	DIN Rail Mount	400 V		40 A	Screw And Snap On		10 kA			Handle		3.543 in (90 mm)	2.835 in (72 mm)	IP20	3.543 x 2.835 x 2.756 in (90 x 72 x 70 mm)	Trip	2.756 in (70 mm)		4	70 °C (158 °F)
A9R61240	Schneider Electric Sa	Equipment Leakage Circuit Breaker	DIN Rail Mount	240 V		40 A	Snap On	-25 °C (-13 °F)	1.5 kA			Toggle Handle	Bulk	3.583 in (91 mm)	1.417 in (36 mm)	IP20; IP40		Trip	2.894 in (73.5 mm)	EN; IEC	2	60 °C (140 °F)
EGE3040FFG	Eaton Corporation	Thermal Magnetic Circuit Breaker	Panel Mount	347 V		40 A	Screw		18 kA			Toggle Handle		5.5 in (139.7 mm)	3 in (76.2 mm)			Manual On/Off	2.992 in (76 mm)	CE; CSA; IEC; UL	3
GV3P40	Schneider Electric Sa	Thermal Magnetic Circuit Breaker	DIN Rail And Panel Mount	690 V		40 A	Screw And Snap On	-20 °C (-4 °F)	6 kA		Reference standard: UL	Rotary Handle	Bulk	5.197 in (132 mm)	2.165 in (55 mm)	IK09; IP20		Trip	5.354 in (136 mm)	ABS; ATEX; BV; CSA; CCC; DNV-GL; EAC; EN; IEC; LR0S; UKCA	3	60 °C (140 °F)
GV3P401	Schneider Electric Sa	Thermal Magnetic Circuit Breaker	DIN Rail And Panel Mount	690 V		40 A	Screw And Snap On	-20 °C (-4 °F)	6 kA			Rotary Handle	Bulk	5.197 in (132 mm)	2.165 in (55 mm)	IK09		Trip	5.354 in (136 mm)	CSA; EN; IEC; UL	3	60 °C (140 °F)
IEL11-1-63-40.0-01-V	Sensata Technologies	Magnetic Circuit Breaker	Panel Mount	480 V		40 A	Screw	-40 °C (-40 °F)	5 kA			Toggle Handle		2.49 in (63.24 mm)	1.515 in (38.48 mm)	Corrosion/Moisture Resistant		Trip Free	1.859 in (47.22 mm)	CSA; UL; VDE	2	85 °C (185 °F)
LELHK11-1-63-40.0-01-V	Sensata Technologies	Magnetic Circuit Breaker	Panel Mount	125 V		40 A	Stud		5 kA			Toggle Handle		2.49 in (63.24 mm)	1.515 in (38.48 mm)	Corrosion/Moisture Resistant		Trip Free	1.859 in (47.22 mm)	CCC; VDE	2
413-K14-LN2-40A	E-t-a Elektrotechnische Apparate	Thermal Circuit Breaker	Panel Mount	115 V	28 V	40 A	Screw	-55 °C (-67 °F)	6 kA			Push-Pull		1.26 in (32 mm)	0.748 in (19 mm)	Corrosion/Moisture Resistant; IP00; IP40		Tease-Free And Trip-Free	1.929 in (49 mm)	CSA; UL	1	75 °C (167 °F)
PDM-40	Sensata Technologies	Thermal Circuit Breaker	Panel Mount	120 V	30 V	40 A	Screw					Push Button		2 in (50.8 mm)	1.159 in (29.44 mm)			Trip	1.145 in (29.08 mm)	UL
PKZM4-40	Eaton Corporation	Thermal Magnetic Circuit Breaker	DIN Rail Mount	690 V		40 A	Screw	-25 °C (-13 °F)	50 kA			Turn Button		5.512 in (140 mm)	2.165 in (55 mm)	Corrosion Resistant; IP00; IP20		Trip	6.299 in (160 mm)	CE; CSA; EN; IEC; UL	3	55 °C (131 °F)
167120	Eaton Corporation	Equipment Leakage Circuit Breaker	DIN Rail Mount			40 A	Snap On							3.5 in (88.9 mm)	3 in (76.2 mm)		3.5 x 3 x 1.5 in (88.9 x 76.2 x 38.1 mm)		1.5 in (38.1 mm)	EN; IEC; UL	2
FAZ-B40/3	Eaton Corporation	Thermal Magnetic Circuit Breaker	DIN Rail Mount	480 V	96 V	40 A	Snap On	-40 °C (-40 °F)	15 kA			Toggle		3.15 in (80 mm)	2.091 in (53.1 mm)	IP20		Manual On/Off	2.362 in (60 mm)	CCC; CE; CSA; IEC; UL; VDE	3	75 °C (167 °F)	Short
167706	Eaton Corporation	Equipment Leakage Circuit Breaker	DIN Rail Mount	120 V		40 A	Snap On					Toggle						Trip Free		CSA; CE; CUL; EN; IEC; OVE; UL	4
167102	Eaton Corporation	Equipment Leakage Circuit Breaker	DIN Rail Mount	480 V		40 A	Snap On	-25 °C (-13 °F)	10 kA			Manual On/Off		3.15 in (80 mm)	2.756 in (70 mm)	IP20; IP40		Trip	2.579 in (65.5 mm)	EN; IEC; UL	4	75 °C (167 °F)
FAZ-C40/3-NA	Eaton Corporation	Thermal Magnetic Circuit Breaker	DIN Rail Mount	240 V		40 A	Snap On		10 kA			Toggle						Manual On/Off			3
222354	Eaton Corporation	Thermal Magnetic Circuit Breaker	DIN Rail Mount	690 V		40 A	Screw	-25 °C (-13 °F)	50 kA			Turn Button		5.512 in (140 mm)	2.165 in (55 mm)	Corrosion Resistant; IP00; IP20		Trip	6.299 in (160 mm)	CE; CSA; EN; IEC; UL	3	55 °C (131 °F)
FAZ-B40/2	Eaton Corporation	Thermal Magnetic Circuit Breaker	DIN Rail Mount	480 V	96 V	40 A	Snap On	-40 °C (-40 °F)	15 kA			Toggle		3.15 in (80 mm)	1.394 in (35.4 mm)	IP20		Manual On/Off	2.362 in (60 mm)	CCC; CE; CSA; IEC; UL; VDE	2	75 °C (167 °F)	Short
FAZ-C40/2-NA	Eaton Corporation	Thermal Magnetic Circuit Breaker	DIN Rail Mount	240 V		40 A	Snap On		10 kA			Toggle						Manual On/Off			2
FAZ-D40/2-NA	Eaton Corporation	Thermal Magnetic Circuit Breaker	DIN Rail Mount	240 V		40 A	Snap On		10 kA			Toggle						Manual On/Off			2
W92-X112-40	TE Connectivity	Magnetic Circuit Breaker	Panel Mount	277 V		40 A	Stud	-40 °C (-40 °F)	5 kA	2.2 s		Toggle		2.5 in (63.5 mm)	1.5 in (38.1 mm)			Series Trip	1.845 in (46.86 mm)		2	85 °C (185 °F)
1010289	Phoenix Contact	Thermal Magnetic Circuit Breaker	DIN Rail Mount	240 V		40 A	Screw	-35 °C (-31 °F)	10 kA			Handle	Bulk	4.567 in (116 mm)	2.083 in (52.9 mm)			Trip	2.587 in (65.7 mm)	CUL; TUV; UL	3	70 °C (158 °F)
812040BP	Littelfuse	Thermal Circuit Breaker	Panel Mount		12 V	40 A	Stud					Automatic Reset								SAE

Circuit Breaker

A circuit breaker is an automatic electrical switch that is designed to protect an electrical circuit from damage caused by overcurrent or short circuits. Circuit breakers are commonly used in residential, commercial, and industrial electrical systems, and they are an important safety device that helps prevent electrical fires, equipment damage, and personal injury.

Circuit breakers work by monitoring the amount of current flowing through an electrical circuit. If the current exceeds a preset level, the circuit breaker will trip, or open the circuit, to prevent damage to the electrical system. When the circuit breaker trips, it interrupts the flow of current, which stops the electrical current from flowing and prevents further damage.

Circuit breakers are available in a variety of types and sizes, and they can be classified based on their voltage rating, current rating, and interrupting capacity. Some common types of circuit breakers include thermal circuit breakers, magnetic circuit breakers, and hybrid circuit breakers.

In addition to protecting electrical systems from overcurrent and short circuits, circuit breakers also help improve the reliability and efficiency of electrical systems. They can also be used to switch electrical circuits on and off, which can be helpful in certain applications.