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	Rated Breaking Capacity	Manufacturer Series	Trip Time/Delay	Additional Features	Actuator Type	Body Length/Diameter	Body Width	Environmental Characteristics	Dimensions	Circuit Function	Body Height	Reference Standard	No. of Poles	Maximum Operating Temperature	Blow Characteristic
25120-B-2	Eaton Corporation	Thermal Circuit Breaker	Panel Mount		32 V	20 A	Stud	-40 °C (-40 °F)	2.5 kA				Push Button	2.194 in (55.73 mm)	1.457 in (37 mm)	Fluid Resistant, IP66		Manual On/Off	0.728 in (18.5 mm)	UL	2	85 °C (185 °F)
CB123-30B	Eaton Corporation	Thermal Circuit Breaker
CB187P-60	Eaton Corporation	Thermal Circuit Breaker
CB255-10	Eaton Corporation	Thermal Circuit Breaker
CB255-40	Eaton Corporation	Thermal Circuit Breaker
CB255-50	Eaton Corporation	Thermal Circuit Breaker
FAZ-D4/2	Eaton Corporation	Thermal Circuit Breaker	DIN Rail Mount	415 V		4 A	Snap On	-40 °C (-40 °F)	15 kA				Toggle Handle	2.972 in (75.5 mm)	1.417 in (36 mm)	IP20		Trip Free	3.15 in (80 mm)	CE; CSA; IEC; UL	2	75 °C (167 °F)
FAZ-S10/1	Eaton Corporation	Thermal Circuit Breaker	DIN Rail Mount	240 V	60 V	10 A	Snap On	-40 °C (-40 °F)	10 kA			Rated breaking capacity at 400 VAC		3.15 in (80 mm)	0.689 in (17.5 mm)	IP20; IP40	3.15 x 0.689 x 2.579 in (80 x 17.5 x 65.5 mm)	Trip	2.579 in (65.5 mm)	CE; CSA; EN; IEC; UL	1	75 °C (167 °F)
NZMN3-AE400	Eaton Corporation	Thermal Circuit Breaker	Panel Mount	690 V		400 A	Screw	-25 °C (-13 °F)	5 kA				Rocker Lever	10.827 in (275 mm)	5.512 in (140 mm)	Corrosion Resistant; IP20; IP40		Trip	6.535 in (166 mm)	IEC	3	70 °C (158 °F)
PLSM-B32/3-MW	Eaton Corporation	Thermal Circuit Breaker	DIN Rail Mount	400 V		32 A	Snap On	-25 °C (-13 °F)	10 kA				Handle	3.15 in (80 mm)	2.067 in (52.5 mm)	Corrosion Resistant; IP20		Trip	2.579 in (65.5 mm)		3	75 °C (167 °F)
1-1393250-9	TE Connectivity	Thermal Circuit Breaker	Panel Mount	250 V	32 V	250 mA	Quick Connect		1 kA		4.5 s		Push To Reset	0.625 in (15.87 mm)	0.54 in (13.71 mm)		0.625 x 0.54 x 1.535 in (15.87 x 13.71 x 38.99 mm)	Series Trip	1.535 in (38.99 mm)	CCC; CSA; UL; VDE	1		400 ms
3-1393250-0	TE Connectivity	Thermal Circuit Breaker	Panel Mount	250 V	32 V	15 A	Quick Connect				2.2 s		Push To Reset					Series Trip			1
3-1393250-8	TE Connectivity	Thermal Circuit Breaker	Panel Mount	250 V	32 V	5 A	Quick Connect		1 kA		2.2 s		Push To Reset	0.76 in (19.31 mm)	0.76 in (19.31 mm)			Series Trip	1.535 in (38.99 mm)		1
4-1393249-1	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	1.494 in (37.96 mm)		1
W28-XT1A-3	TE Connectivity	Thermal Circuit Breaker	Panel Mount	250 V	32 V	3 A	Quick Connect				2.2 s		Push To Reset	0.76 in (19.31 mm)	0.76 in (19.31 mm)			Series Trip	1.535 in (38.99 mm)		1
W54-XA1C4A10-30	TE Connectivity	Thermal Circuit Breaker	Panel Mount	250 V	50 V	30 A	Lug	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)
W54-XB1A4A10-30	TE Connectivity	Thermal Circuit Breaker	Panel Mount	250 V	50 V	30 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)
W54-XB1A4A10-5	TE Connectivity	Thermal Circuit Breaker	Panel Mount	250 V	50 V	5 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)
W57-XB2A99C10-5	TE Connectivity	Thermal Circuit Breaker	Panel Mount	250 V	50 V	5 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)
W58-XC1A4A-16	TE Connectivity	Thermal Circuit Breaker	Panel Mount	250 V	50 V	16 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
7277-2-5	Texas Instruments	Thermal Circuit Breaker	Panel Mount			5 A	Screw			7277			Push Button					Trip
3TC2-25	Texas Instruments	Thermal Circuit Breaker	Panel Mount	120 V	28 V	25 A	Screw		2 kA	3TC2		Rated breaking capacity at 28 VDC: 6000 A	Push-Pull	1.094 in (27.79 mm)	0.781 in (19.84 mm)	Corrosion Resistant	1.094 x 0.781 x 1.03 in (27.79 x 19.84 x 26.16 mm)		1.03 in (26.16 mm)
3TC2-20	Texas Instruments	Thermal Circuit Breaker	Panel Mount	120 V	28 V	20 A	Screw		2 kA	3TC2		Rated breaking capacity at 28 VDC: 6000 A	Push-Pull	1.094 in (27.79 mm)	0.781 in (19.84 mm)	Corrosion Resistant	1.094 x 0.781 x 1.03 in (27.79 x 19.84 x 26.16 mm)		1.03 in (26.16 mm)
3TC2-15	Texas Instruments	Thermal Circuit Breaker	Panel Mount	120 V	28 V	15 A	Screw		2 kA	3TC2		Rated breaking capacity at 28 VDC: 6000 A	Push-Pull	1.094 in (27.79 mm)	0.781 in (19.84 mm)	Corrosion Resistant	1.094 x 0.781 x 1.03 in (27.79 x 19.84 x 26.16 mm)		1.03 in (26.16 mm)
7271-3-10	Texas Instruments	Thermal Circuit Breaker	Panel Mount	120 V	30 V	10 A	Screw		3.5 kA	7271		Rated breaking capacity at 30 VDC: 4000 A		1.375 in (34.93 mm)	0.75 in (19.05 mm)		1.375 x 0.75 x 0.844 in (34.93 x 19.05 x 21.44 mm)	Trip	0.844 in (21.44 mm)
7277-2-15	Texas Instruments	Thermal Circuit Breaker	Panel Mount			15 A	Screw			7277			Push Button					Trip
3TC2-30	Texas Instruments	Thermal Circuit Breaker	Panel Mount	120 V	28 V	30 A	Screw		2 kA	3TC2		Rated breaking capacity at 28 VDC: 6000 A	Push-Pull	1.094 in (27.79 mm)	0.781 in (19.84 mm)	Corrosion Resistant	1.094 x 0.781 x 1.03 in (27.79 x 19.84 x 26.16 mm)		1.03 in (26.16 mm)
3TC2-35	Texas Instruments	Thermal Circuit Breaker	Panel Mount	120 V	28 V	35 A	Screw		2 kA	3TC2		Rated breaking capacity at 28 VDC: 6000 A	Push-Pull	1.094 in (27.79 mm)	0.781 in (19.84 mm)	Corrosion Resistant	1.094 x 0.781 x 1.03 in (27.79 x 19.84 x 26.16 mm)		1.03 in (26.16 mm)
7277-2-1	Texas Instruments	Thermal Circuit Breaker	Panel Mount			1 A	Screw			7277			Push Button					Trip
7277-2-2	Texas Instruments	Thermal Circuit Breaker	Panel Mount			2 A	Screw			7277			Push Button					Trip
7274-2-71/2	Texas Instruments	Thermal Circuit Breaker	Panel Mount	120 V	28 V	7.5 A	Screw		500 A	7274		Rated breaking capacity at 28 VDC: 2000 A	Push Button	0.75 in (19.05 mm)	0.562 in (14.27 mm)	Water Resistant	0.75 x 0.562 x 1.115 in (19.05 x 14.27 x 28.32 mm)	Trip	1.115 in (28.32 mm)
7274-2-3	Texas Instruments	Thermal Circuit Breaker	Panel Mount	120 V	28 V	3 A	Screw		800 A	7274			Push Button	0.75 in (19.05 mm)	0.562 in (14.27 mm)	Water Resistant	0.75 x 0.562 x 1.115 in (19.05 x 14.27 x 28.32 mm)	Trip	1.115 in (28.32 mm)
7274-4-3	Texas Instruments	Thermal Circuit Breaker	Panel Mount	120 V	28 V	3 A	Screw		800 A	7274			Push Button	0.75 in (19.05 mm)	0.562 in (14.27 mm)	Water Resistant	0.75 x 0.562 x 1.115 in (19.05 x 14.27 x 28.32 mm)	Trip	1.115 in (28.32 mm)
7277-2-1/2	Texas Instruments	Thermal Circuit Breaker	Panel Mount			500 mA	Screw			7277			Push Button					Trip
7270-1-5	Texas Instruments	Thermal Circuit Breaker	Panel Mount	120 V	30 V	5 A	Screw		3.5 kA	7270		Rated breaking capacity at 30 VDC: 4000 A	Toggle	1.375 in (34.93 mm)	0.75 in (19.05 mm)		1.375 x 0.75 x 0.844 in (34.93 x 19.05 x 21.44 mm)	Trip	0.844 in (21.44 mm)
2TC2-4	Texas Instruments	Thermal Circuit Breaker	Panel Mount	120 V	28 V	4 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)
7274-2-11/2	Texas Instruments	Thermal Circuit Breaker	Panel Mount	120 V	28 V	1.5 A	Screw		800 A	7274			Push Button	0.75 in (19.05 mm)	0.562 in (14.27 mm)	Water Resistant	0.75 x 0.562 x 1.115 in (19.05 x 14.27 x 28.32 mm)	Trip	1.115 in (28.32 mm)
7274-4-4	Texas Instruments	Thermal Circuit Breaker	Panel Mount	120 V	28 V	4 A	Screw		800 A	7274			Push Button	0.75 in (19.05 mm)	0.562 in (14.27 mm)	Water Resistant	0.75 x 0.562 x 1.115 in (19.05 x 14.27 x 28.32 mm)	Trip	1.115 in (28.32 mm)
5SY6106-7	Infineon Technologies	Thermal Circuit Breaker	DIN Rail And Panel Mount	400 V		6 A	Screw	-25 °C (-13 °F)	5 kA	5SY6106-7				2.992 in (76 mm)	0.709 in (18 mm)	Sealed	2.992 x 0.709 x 3.543 in (76 x 18 x 90 mm)		3.543 in (90 mm)	CCC; CE; GOST; IMQ; KETI; UL; VDE	1	55 °C (131 °F)
FLT-SEC-H-T1-3C-440/25-FM	Phoenix Contact	Thermal Circuit Breaker
0700025	Phoenix Contact	Thermal Circuit Breaker								07000
2800848	Phoenix Contact	Thermal Circuit Breaker
TCP0,1A	Phoenix Contact	Thermal Circuit Breaker								TCP0,1A
2905419	Phoenix Contact	Thermal Circuit Breaker
2800303	Phoenix Contact	Thermal Circuit Breaker
FLT-SEC-P-T1-3C-440/35-FM	Phoenix Contact	Thermal Circuit Breaker
2907390	Phoenix Contact	Thermal Circuit Breaker
0712107	Phoenix Contact	Thermal Circuit Breaker								0712107

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.