Thermal Circuit Breaker Circuit Breaker 503

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Part	Manufacturer	Circuit Protection Type	Mounting Feature	Rated AC Voltage	Rated DC Voltage	Rated Current	Terminal Shape	Minimum Operating Temperature	Terminal Finish	Rated Breaking Capacity	Manufacturer Series	Trip Time/Delay	Additional Features	Actuator Type	Packing Method	Body Length/Diameter	Body Width	Environmental Characteristics	JESD-609 Code	Dimensions	Circuit Function	Body Height	Reference Standard	No. of Poles	Maximum Operating Temperature
W58-XC4C12A-10	TE Connectivity	Thermal Circuit Breaker	Panel Mount	250 V	50 V	10 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
1410-L210-L2F1-S02-3.15A	E-t-a Elektrotechnische Apparate	Thermal Circuit Breaker	Through Hole Mount	240 V	28 V	3.15 A	Printed Circuit Board	-20 °C (-4 °F)	Silver	2 kA			Rated breaking capacity at 50 VDC: 200 A	Reset Slide		1.102 in (28 mm)	0.354 in (9 mm)	Corrosion Resistant	e4	1.102 x 0.354 x 0.425 in (28 x 9 x 10.8 mm)		0.425 in (10.8 mm)	CSA; UL; VDE	1	70 °C (158 °F)
2TC2-71/2	Texas Instruments	Thermal Circuit Breaker	Panel Mount	120 V	28 V	7.5 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)
3120-N321-P7T1-W01D-5A	E-t-a Elektrotechnische Apparate	Thermal Circuit Breaker	Panel Mount	240 V	50 V	5 A	Quick Connect	-30 °C (-22 °F)		5 kA			Rated breaking capacity at 50 VDC: 1000 A	Rocker		2.22 in (56.4 mm)	0.984 in (25 mm)	Corrosion Resistant; IP00; IP40			Trip Free	1.299 in (33 mm)	CCC; CSA; KC; UL; VDE	2	60 °C (140 °F)
3120-N321-P7T1-W02D-10A	E-t-a Elektrotechnische Apparate	Thermal Circuit Breaker	Panel Mount	240 V	50 V	10 A	Quick Connect	-30 °C (-22 °F)		5 kA			Rated breaking capacity at 50 VDC: 1000 A	Rocker		2.22 in (56.4 mm)	0.984 in (25 mm)	Corrosion Resistant; IP00; IP40			Trip Free	1.299 in (33 mm)	CCC; CSA; KC; UL; VDE	2	60 °C (140 °F)
3120-N321-P7T1-W19DG4-16A	E-t-a Elektrotechnische Apparate	Thermal Circuit Breaker	Panel Mount	240 V	50 V	16 A	Quick Connect	-30 °C (-22 °F)		5 kA			Rated breaking capacity at 50 VDC: 1000 A	Rocker				Corrosion/Moisture Resistant; IP00; IP40			Manual On/Off		CCC; CE; CSA; CQC; KTL; UL; VDE	2	60 °C (140 °F)
3120-N321-P7T1-W19DG4-3A	E-t-a Elektrotechnische Apparate	Thermal Circuit Breaker	Panel Mount	240 V	50 V	3 A	Quick Connect	-30 °C (-22 °F)		5 kA			Rated breaking capacity at 50 VDC: 1000 A	Rocker				Corrosion/Moisture Resistant; IP00; IP40			Manual On/Off		CCC; CE; CSA; CQC; KTL; UL; VDE	2	60 °C (140 °F)
3120-N321-P7T1-W19DG4-6A	E-t-a Elektrotechnische Apparate	Thermal Circuit Breaker	Panel Mount	240 V	50 V	6 A	Quick Connect	-30 °C (-22 °F)		5 kA			Rated breaking capacity at 50 VDC: 1000 A	Rocker				Corrosion/Moisture Resistant; IP00; IP40			Manual On/Off		CCC; CE; CSA; CQC; KTL; UL; VDE	2	60 °C (140 °F)
W28-XQ1A-7	TE Connectivity	Thermal Circuit Breaker	Panel Mount	250 V	32 V	7 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
W58-XC4C12A-20	TE Connectivity	Thermal Circuit Breaker	Panel Mount	250 V	50 V	20 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
1135749	Phoenix Contact	Thermal Circuit Breaker
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)
3120-N321-P7T1-W01D-10A	E-t-a Elektrotechnische Apparate	Thermal Circuit Breaker	Panel Mount	240 V	50 V	10 A	Quick Connect	-30 °C (-22 °F)		5 kA			Rated breaking capacity at 50 VDC: 1000 A	Rocker		2.22 in (56.4 mm)	0.984 in (25 mm)	Corrosion Resistant; IP00; IP40			Trip Free	1.299 in (33 mm)	CCC; CSA; KC; UL; VDE	2	60 °C (140 °F)
3120-N321-P7T1-W01D-3A	E-t-a Elektrotechnische Apparate	Thermal Circuit Breaker	Panel Mount	240 V	50 V	3 A	Quick Connect	-30 °C (-22 °F)		5 kA			Rated breaking capacity at 50 VDC: 1000 A	Rocker		2.22 in (56.4 mm)	0.984 in (25 mm)	Corrosion Resistant; IP00; IP40			Trip Free	1.299 in (33 mm)	CCC; CSA; KC; UL; VDE	2	60 °C (140 °F)
413-K14-N2-60A	E-t-a Elektrotechnische Apparate	Thermal Circuit Breaker	Panel Mount	115 V	28 V	60 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)
4411.0067	Schurter Ag	Thermal Circuit Breaker	Panel Mount	277 V	28 V	30 A	Screw	-5 °C (23 °F)		1 kA				Reset Type	Bulk	1.22 in (31 mm)	0.453 in (11.5 mm)				Trip	1.772 in (45 mm)	CCC; CSA; UL; VDE	1	60 °C (140 °F)
5SY4104-7	Siemens	Thermal Circuit Breaker	DIN Rail Mount	400 V		4 A	Snap On	-25 °C (-13 °F)		5 kA	5SY4104-7		Environmental Characteristics: IP20; Sealed			3.535 in (89.8 mm)	0.693 in (17.6 mm)	Environment/Moisture Resistant		3.535 x 0.693 x 2.764 in (89.8 x 17.6 x 70.2 mm)	Trip	2.764 in (70.2 mm)	CCC; CE; EAC; GOST; IMQ; KTL; UL; VDE	1	55 °C (131 °F)
5SY5206-7	Siemens	Thermal Circuit Breaker	DIN Rail Mount	400 V	500 V	6 A	Screw			10 kA				Handle		3.543 in (90 mm)	1.417 in (36 mm)	IP20		3.543 x 1.417 x 2.992 in (90 x 36 x 76 mm)	Trip	2.992 in (76 mm)		2
6752-100-90	Sensata Technologies	Thermal Circuit Breaker									6752-100
CLB-103-27E7N-W-A	Carling Technologies	Thermal Circuit Breaker	Panel Mount	250 V	32 V	10 A	Quick Connect	-10 °C (14 °F)		300 A			Rated breaking capacity at 32 VDC: 2500 A	Push To Reset		1.378 in (35 mm)	0.571 in (14.5 mm)	Fire Resistant			Series Trip	1.693 in (43 mm)	CE; TUV; UL	1	60 °C (140 °F)
W57-XB1A4A10-15	TE Connectivity	Thermal Circuit Breaker	Panel Mount	250 V	50 V	15 A	Quick Connect	0 °C (32 °F)		1 kA		4 s		Push To Reset		1.15 in (29.2 mm)	0.575 in (14.6 mm)				Series Trip	0.89 in (22.6 mm)		1	60 °C (140 °F)
0712259	Phoenix Contact	Thermal Circuit Breaker	Panel Mount	250 V	65 V	4 A	Quick Connect	-20 °C (-4 °F)		24 A				Push To Reset	Bulk	0.961 in (24.4 mm)	0.323 in (8.2 mm)	IP40		1.752 x 0.323 x 0.961 in (44.5 x 8.2 x 24.4 mm)	Trip	1.752 in (44.5 mm)	CCC; CSA; CUL; EAC; UL; VDE	1	60 °C (140 °F)
1658-G21-02-P10-10A	E-t-a Elektrotechnische Apparate	Thermal Circuit Breaker	Inline/Holder	240 V	28 V	10 A	Tab/Blade	-20 °C (-4 °F)		200 A				Manual Reset		1.26 in (32 mm)	0.551 in (14 mm)				Trip Free	1.563 in (39.7 mm)	CSA; CUL; UL; VDE	1	60 °C (140 °F)
W33-S1N1Q-10	TE Connectivity	Thermal Circuit Breaker	Panel Mount	250 V	50 V	10 A	Quick Connect					3 s		Rocker		1.89 in (48.01 mm)	0.98 in (24.89 mm)				Series Trip	1.724 in (43.79 mm)		2
W58-XB1A4A-6	TE Connectivity	Thermal Circuit Breaker	Panel Mount	250 V	50 V	6 A	Quick Connect					6 s		Push To Reset							Series Trip			1
3120-F323-P7T1-W02D-1.5A	E-t-a Elektrotechnische Apparate	Thermal Circuit Breaker	Panel Mount	250 V	50 V	1.5 A	Quick Connect	-30 °C (-22 °F)		15 A				Rocker		2.126 in (54 mm)	0.827 in (21 mm)	Corrosion Resistant		2.126 x 0.827 x 1.299 in (54 x 21 x 33 mm)	Manual On/Off	1.299 in (33 mm)	CCC; CSA; UL; VDE	2	60 °C (140 °F)
5SY4213-8	Siemens	Thermal Circuit Breaker	DIN Rail Mount	400 V	400 V	13 A	Snap On	-25 °C (-13 °F)		5 kA			Interrupting current max(DC): 10000 A			3.535 in (89.8 mm)	1.386 in (35.2 mm)			3.535 x 1.386 x 2.992 in (89.8 x 35.2 x 76 mm)	Trip	2.992 in (76 mm)	CCC; CE; GOST; IMQ; UL; VDE	2	55 °C (131 °F)
MS14154-10L	Sensata Technologies	Thermal Circuit Breaker	Panel Mount-Threaded	120 V		10 A	Screw			2 kA				Push-Pull		1.84 in (46.73 mm)	0.781 in (19.84 mm)	Corrosion Resistant; Moisture Resistant		1.84 x 0.781 x 1.384 in (46.73 x 19.84 x 35.15 mm)	Trip Free	1.436 in (36.47 mm)		1
W58-XB1A4A-12	TE Connectivity	Thermal Circuit Breaker	Panel Mount	250 V	50 V	12 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
2800837	Phoenix Contact	Thermal Circuit Breaker									2800837
4435.0044	Schurter Ag	Thermal Circuit Breaker	Panel Mount	415 V		5 A	Quick Connect	-30 °C (-22 °F)		2 kA				Rocker	Bulk	1.594 in (40.5 mm)	1.417 in (36 mm)				Manual On/Off	1.736 in (44.1 mm)	CCC; CUL; UL; VDE	3	60 °C (140 °F)
9-1423674-4	TE Connectivity	Thermal Circuit Breaker
1140-G151-P7M1-16A	E-t-a Elektrotechnische Apparate	Thermal Circuit Breaker	Panel Mount	250 V	50 V	16 A	Quick Connect	-20 °C (-4 °F)		2 kA				Push To Reset		0.748 in (19 mm)	0.433 in (11 mm)	Corrosion Resistant; IP00; IP40			Trip Free	2.374 in (60.3 mm)	CSA; UL; VDE	2	60 °C (140 °F)
5SY4208-8	Siemens	Thermal Circuit Breaker	DIN Rail Mount	400 V	400 V	8 A	Snap On	-25 °C (-13 °F)		5 kA			Interrupting current max(DC): 10000 A			3.535 in (89.8 mm)	1.386 in (35.2 mm)			3.535 x 1.386 x 2.992 in (89.8 x 35.2 x 76 mm)	Trip	2.992 in (76 mm)	CCC; CE; GOST; IMQ; UL; VDE	2	55 °C (131 °F)
7274-2-1/2	Sensata Technologies	Thermal Circuit Breaker									7274-2
MS3320-15L	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)
0712233	Phoenix Contact	Thermal Circuit Breaker									0712233
3120-F321-P7T1-W01D-20A	E-t-a Elektrotechnische Apparate	Thermal Circuit Breaker	Panel Mount	250 V	50 V	20 A	Quick Connect	-30 °C (-22 °F)		20 A				Rocker		2.126 in (54 mm)	0.827 in (21 mm)	Corrosion Resistant		2.126 x 0.827 x 1.299 in (54 x 21 x 33 mm)	Manual On/Off	1.299 in (33 mm)	CCC; CSA; UL; VDE	2	60 °C (140 °F)
3VA5340-6EF31-0AA0	Siemens	Thermal Circuit Breaker	Panel Mount	600 V	500 V	400 A	Screw	-25 °C (-13 °F)		65 kA				Toggle		9.8 in (248.92 mm)	5.4 in (137.16 mm)	IP40		9.8 x 5.4 x 4.3 in (248.92 x 137.16 x 109.22 mm)	Trip	4.3 in (109.22 mm)		3	70 °C (158 °F)
3VA5440-1MU31-0AA0	Siemens	Thermal Circuit Breaker	Panel Mount	600 V		400 A	Screw	-25 °C (-13 °F)		150 kA				Toggle		9.8 in (248.92 mm)	5.4 in (137.16 mm)	IP40		9.8 x 5.4 x 4.3 in (248.92 x 137.16 x 109.22 mm)	Trip	4.3 in (109.22 mm)		3	70 °C (158 °F)
4435.0019	Schurter Ag	Thermal Circuit Breaker	Panel Mount	277 V	32 V	3 A	Quick Connect	-30 °C (-22 °F)		2 kA				Rocker	Bulk	1.417 in (36 mm)	0.689 in (17.5 mm)				Trip	1.319 in (33.5 mm)	CCC; CUL; UL; VDE	1	60 °C (140 °F)
4435.0039	Schurter Ag	Thermal Circuit Breaker	Panel Mount	240 V	60 V	5 A	Quick Connect	-30 °C (-22 °F)		2 kA				Rocker	Bulk	1.417 in (36 mm)	1.142 in (29 mm)	IP40			Trip Free	1.736 in (44.1 mm)	CCC; CSA; GB; IEC; UL; VDE	2	60 °C (140 °F)
5-1423674-4	TE Connectivity	Thermal Circuit Breaker	Panel Mount	250 V	50 V	25 A	Quick Connect	0 °C (32 °F)		1 kA		5 s		Push To Reset		1.378 in (35 mm)	0.575 in (14.6 mm)				Series Trip	1.22 in (31 mm)		1	60 °C (140 °F)
5SU1356-7KK10	Siemens	Thermal Circuit Breaker	DIN Rail Mount	230 V		10 A	Snap On	-25 °C (-13 °F)			5SU1356-7KK10					3.543 in (90 mm)	1.417 in (36 mm)	Environment/Moisture Resistant		3.543 x 1.417 x 2.756 in (90 x 36 x 70 mm)	Trip	2.756 in (70 mm)	CCC; CE; GOST; IMQ; OVE; VDE	1	55 °C (131 °F)
CLB-103-27E6A-B-A	Carling Technologies	Thermal Circuit Breaker	Panel Mount	250 V	32 V	10 A	Quick Connect	-10 °C (14 °F)		300 A			Rated breaking capacity at 32 VDC: 2500 A	Push To Reset		1.378 in (35 mm)	0.571 in (14.5 mm)	Fire Resistant			Series Trip	1.693 in (43 mm)	CE; TUV; UL	1	60 °C (140 °F)
PDLA-150	Sensata Technologies	Thermal Circuit Breaker	Panel Mount		30 V	150 A	Screw							Push Button		3.125 in (79.38 mm)	1.859 in (47.22 mm)				Trip	1.078 in (27.38 mm)	CCC
PDLA-150-I	Sensata Technologies	Thermal Circuit Breaker	Panel Mount		30 V	150 A	Screw							Push Button		3.125 in (79.38 mm)	1.859 in (47.22 mm)				Trip	1.078 in (27.38 mm)	CCC

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.