Circuit Breaker

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Part	Manufacturer	Circuit Protection Type	Mounting Feature	Rated AC Voltage	Rated DC Voltage	Rated Current	Terminal Shape	Minimum Operating Temperature	Rated Breaking Capacity	Manufacturer Series	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
S201-C16	Abb	Thermal Magnetic Circuit Breaker	DIN Rail Mount	250 V		16 A	Snap On	-25 °C (-13 °F)	6 kA				Toggle				IP20; IP40		Trip		CSA; IEC; UL		55 °C (131 °F)
2TC2-5	Texas Instruments	Thermal Circuit Breaker	Panel Mount	120 V	28 V	5 A	Screw		2.5 kA	2TC2			Push-Pull		0.781 in (19.84 mm)	0.593 in (15.06 mm)	Corrosion Resistant	0.781 x 0.593 x 1.03 in (19.84 x 15.06 x 26.16 mm)		1.03 in (26.16 mm)
XT3SU3150AFF000XXX	Abb	Thermal Magnetic Circuit Breaker	DIN Rail Mount	347 V	500 V	150 A	Snap On		10 kA				Manual On/Off	CSA; UL	5.118 in (130 mm)	3 in (76.2 mm)			Trip	2.756 in (70 mm)		3
5SV3346-6	Siemens	Equipment Leakage Circuit Breaker	DIN Rail Mount	400 V		63 A	Snap On	-25 °C (-13 °F)	10 kA					Bulk	3.543 in (90 mm)	2.835 in (72 mm)	IP20		Trip	2.756 in (70 mm)	CCC; CE; CEBEC; EAC; IMQ; OVE; VDE	4	45 °C (113 °F)
W28-XQ1A-1	TE Connectivity	Thermal Circuit Breaker	Panel Mount	250 V	32 V	1 A	Quick Connect		1 kA		4.5 s		Push To Reset		0.625 in (15.88 mm)	0.54 in (13.72 mm)		0.625 x 0.54 x 1.535 in (15.88 x 13.72 x 38.99 mm)	Series Trip	1.535 in (38.99 mm)	CSA; UL; VDE	1
W67-X2Q12-20	TE Connectivity	Magnetic Circuit Breaker	Panel Mount	277 V		20 A	Quick Connect	-40 °C (-40 °F)	5 kA		2.2 s		Toggle		2 in (50.8 mm)	0.75 in (19.05 mm)	Fungus Resistant; Moisture Resistant	2 x 0.75 x 1.64 in (50.8 x 19.05 x 41.66 mm)	Series Trip	1.64 in (41.66 mm)	CSA; UL	1	85 °C (185 °F)	Standard
W67-X2Q1220	TE Connectivity	Magnetic Circuit Breaker	Panel Mount			20 A	Quick Connect				2.2 s		Toggle						Series Trip			1
18642	Schneider Electric Sa	Thermal Magnetic Circuit Breaker
2909906	Phoenix Contact	Thermal Circuit Breaker
S203-C16	Abb	Thermal Magnetic Circuit Breaker
1610-21-30A	E-t-a Elektrotechnische Apparate
AC2-B2-26-610-144-C	Carling Technologies	Magnetic Circuit Breaker	Panel Mount	277 V		10 A	Quick Connect	-40 °C (-40 °F)	5 kA			Standards: MIL-PRF-55629, MIL-STD-202	Rocker		2.156 in (54.76 mm)	1.515 in (38.48 mm)	Corrosion/Moisture Resistant		Series Trip	1.64 in (41.66 mm)	CSA; UL	2	85 °C (185 °F)
2CDS251001R0024	Abb	Thermal Magnetic Circuit Breaker
S204M-D32	Abb	Thermal Magnetic Circuit Breaker
MS132-10T	Abb	Thermal Circuit Breaker	DIN Rail Mount	690 V		10 A	Screw	-25 °C (-13 °F)	18 kA				Rotary Handle	Bulk	3.85 in (97.8 mm)	1.772 in (45 mm)	IP10; IP20		Trip Free	3.388 in (86.05 mm)	EN; IEC	3	70 °C (158 °F)
XT1NU3030AFF000XXX	Abb	Thermal Magnetic Circuit Breaker	DIN Rail Mount	347 V	500 V	30 A	Snap On		18 kA				Manual On/Off	CSA; UL	5.118 in (130 mm)	3 in (76.2 mm)			Trip	2.756 in (70 mm)		3
2909909	Phoenix Contact	Thermal Circuit Breaker
M9F52335	Schneider Electric Sa	Thermal Magnetic Circuit Breaker
2CDS252001R0064	Abb	Thermal Magnetic Circuit Breaker
CCP2-2-30CC	Eaton Corporation	Equipment Leakage Circuit Breaker	Panel Mount	600 V	125 V	30 A			200 kA				Toggle Handle		3.1 in (78.74 mm)	1.4 in (35.56 mm)			Manual On/Off	3.9 in (99.06 mm)	UL	2
W58-XB1A4A-20	TE Connectivity	Thermal Circuit Breaker	Panel Mount	250 V	50 V	20 A	Quick Connect		1 kA		6 s	Rated breaking capacity at 50 VDC: 2000 A	Push To Reset					1.375 x 0.66 x 1.375 in (34.93 x 16.76 x 34.93 mm)	Series Trip			1
5SV3346-6KL	Siemens	Equipment Leakage Circuit Breaker	DIN Rail Mount	400 V		63 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)
W58-XB1A4A-15	TE Connectivity	Thermal Circuit Breaker	Panel Mount	250 V	50 V	15 A	Quick Connect		1 kA		6 s		Push To Reset		1.375 in (34.93 mm)	0.66 in (16.76 mm)			Series Trip	1.375 in (34.93 mm)		1
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
QOB250GFI	Schneider Electric Sa	Thermal Magnetic Circuit Breaker
QOB250H	Schneider Electric Sa	Thermal Circuit Breaker
QOB250VH	Schneider Electric Sa	Thermal Magnetic Circuit Breaker
QOB250VH1021	Schneider Electric Sa	Thermal Magnetic Circuit Breaker
W23-X1A1G-50	TE Connectivity	Thermal Circuit Breaker	Panel Mount	240 V	50 V	50 A	Screw		1 kA		6 s		Push-Pull		1.384 in (35.15 mm)	0.69 in (17.53 mm)	Corrosion/Environment/Moisture Resistant		Series Trip	1.6 in (40.64 mm)	CSA; UL	1
MS3320-15V	Eaton Corporation	Thermal Circuit Breaker	Panel Mount	120 V	28 V	15 A	Screw	-55 °C (-67 °F)	3.5 kA			Standard: MIL-C-5809, rated breaking capacity at 28 VDC: 6000 A	Push Button		0.781 in (19.84 mm)	0.593 in (15.06 mm)	Corrosion Resistant; Moisture Resistant	0.781 x 0.593 x 1.03 in (19.84 x 15.06 x 26.16 mm)	Trip	1.03 in (26.16 mm)		1	121 °C (249.8 °F)
2TC2-21/2	Texas Instruments	Thermal Circuit Breaker	Panel Mount	120 V	28 V	2.5 A	Screw		2.8 kA	2TC2			Push-Pull		0.781 in (19.84 mm)	0.593 in (15.06 mm)	Corrosion Resistant	0.781 x 0.593 x 1.03 in (19.84 x 15.06 x 26.16 mm)		1.03 in (26.16 mm)
W31-X2M1G-10	TE Connectivity	Thermal Circuit Breaker	Panel Mount	240 V	50 V	10 A	Screw		1 kA		6 s		Toggle		1.384 in (35.15 mm)	0.69 in (17.53 mm)	Corrosion/Environment/Moisture Resistant		Series Trip	1.6 in (40.64 mm)	CSA; UL	1
QOB250EPD	Schneider Electric Sa	Thermal Circuit Breaker
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)
QOB2501021	Schneider Electric Sa	Thermal Magnetic Circuit Breaker
W28-XQ1A-6	TE Connectivity	Thermal Circuit Breaker	Panel Mount	250 V	32 V	6 A	Quick Connect		1 kA		2.2 s		Push To Reset		0.625 in (15.88 mm)	0.54 in (13.72 mm)		0.625 x 0.54 x 1.535 in (15.88 x 13.72 x 38.99 mm)	Series Trip	1.535 in (38.99 mm)	CSA; UL; VDE	1
S202M-C6	Abb	Thermal Magnetic Circuit Breaker
W92-X112-30	TE Connectivity	Magnetic Circuit Breaker	Panel Mount	277 V		30 A	Stud	-40 °C (-40 °F)	5 kA		2.2 s		Toggle		2.5 in (63.5 mm)	1.5 in (38.1 mm)	Moisture Resistant		Series Trip	1.985 in (50.42 mm)	CSA; UL; VDE	2	85 °C (185 °F)	Standard
185120F-011	Eaton Corporation	Thermal Circuit Breaker	Panel Mount		30 V	120 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)
S201-B13	Abb	Thermal Magnetic Circuit Breaker
2TC2-3	Texas Instruments	Thermal Circuit Breaker	Panel Mount	120 V	28 V	3 A	Screw		2.5 kA	2TC2			Push-Pull		0.781 in (19.84 mm)	0.593 in (15.06 mm)	Corrosion Resistant	0.781 x 0.593 x 1.03 in (19.84 x 15.06 x 26.16 mm)		1.03 in (26.16 mm)
2CDS251001R0427	Abb	Thermal Magnetic Circuit Breaker
SU202M-Z5	Abb	Thermal Magnetic Circuit Breaker
QOB250	Schneider Electric Sa	Thermal Circuit Breaker
QOB250HID	Schneider Electric Sa	Thermal Circuit Breaker
S203-B20	Abb	Thermal Magnetic Circuit Breaker
3RV2041-4JA15	Siemens	Thermal Magnetic Circuit Breaker	DIN Rail Mount	690 V		63 A	Screw And Snap On	-20 °C (-4 °F)	3 kA				Rotary Handle		6.496 in (165 mm)	2.756 in (70 mm)	IP00; IP20	6.496 x 2.756 x 6.929 in (165 x 70 x 176 mm)	Trip	6.929 in (176 mm)		3	60 °C (140 °F)
4411.0017	Schurter Ag	Thermal Circuit Breaker	Panel Mount	277 V	28 V	30 A	Quick Connect	-5 °C (23 °F)	1 kA				Reset Type	Bulk	1.22 in (31 mm)	0.453 in (11.5 mm)	IP40		Trip Free	1.772 in (45 mm)	CCC; CSA; GB; IEC; UL; VDE	1	60 °C (140 °F)

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.