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	Packing Method	Body Length/Diameter	Body Width	Environmental Characteristics	Dimensions	Circuit Function	Body Height	Reference Standard	No. of Poles	Maximum Operating Temperature
MS3320-10	Defense Logistics Agency	Thermal Circuit Breaker	Panel Mount	120 V	28 V	10 A	Screw	-55 °C (-67 °F)	2.5 kA			Rated breaking capacity at 28 VDC: 6000 A	Push-Pull		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 Free	1.03 in (26.16 mm)	MIL-C-5809	1	121 °C (249.8 °F)
CM-3	Sensata Technologies	Thermal Circuit Breaker	Panel Mount	120 V	30 V	3 A	Screw						Manual Reset		2 in (50.8 mm)	1.221 in (31.01 mm)	Corrosion Resistant		Trip Free	1.145 in (29.08 mm)	UL
QO130	Schneider Electric Sa	Thermal Circuit Breaker
QO130VH	Schneider Electric Sa	Thermal Circuit Breaker
2908262	Phoenix Contact	Thermal Circuit Breaker
2TC2-10	Texas Instruments	Thermal Circuit Breaker	Panel Mount	120 V	28 V	10 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)
MS3320-15	Defense Logistics Agency	Thermal Circuit Breaker	Panel Mount	120 V	28 V	15 A	Screw	-55 °C (-67 °F)	2.5 kA			Rated breaking capacity at 28 VDC: 6000 A	Push-Pull		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 Free	1.03 in (26.16 mm)	MIL-C-5809	1	121 °C (249.8 °F)
W28-XQ1A-3	TE Connectivity	Thermal Circuit Breaker	Panel Mount	250 V	32 V	3 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
MS3320-3	Defense Logistics Agency	Thermal Circuit Breaker	Panel Mount	120 V	28 V	3 A	Screw	-55 °C (-67 °F)	2.5 kA			Rated breaking capacity at 28 VDC: 6000 A	Push-Pull		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 Free	1.03 in (26.16 mm)	MIL-C-5809	1	121 °C (249.8 °F)
2TC2-15	Texas Instruments	Thermal Circuit Breaker	Panel Mount	120 V	28 V	15 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)
2909908	Phoenix Contact	Thermal Circuit Breaker
2909904	Phoenix Contact	Thermal Circuit Breaker
W28-XQ1A-15	TE Connectivity	Thermal Circuit Breaker	Panel Mount	250 V	32 V	15 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
W28XQ1A15	TE Connectivity	Thermal Circuit Breaker	Panel Mount	250 V	32 V	15 A	Quick Connect				2.2 s		Push To Reset						Series Trip			1
W28-XQ1A15	TE Connectivity	Thermal Circuit Breaker	Panel Mount	250 V	32 V	15 A	Quick Connect				2.2 s		Push To Reset						Series Trip			1
W28-XQ1A-2	TE Connectivity	Thermal Circuit Breaker	Panel Mount	250 V	32 V	2 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
1423901-6	TE Connectivity	Thermal Circuit Breaker
1620-3-10A	E-t-a Elektrotechnische Apparate	Thermal Circuit Breaker	Panel Mount		12 V	10 A	Quick Connect	-40 °C (-40 °F)	150 A				Reset Button		0.524 in (13.3 mm)	0.276 in (7 mm)	Corrosion Resistant; IP00; IP40		Trip	0.984 in (25 mm)		1	85 °C (185 °F)
MS3320-5	Defense Logistics Agency	Thermal Circuit Breaker	Panel Mount	120 V	28 V	5 A	Screw	-55 °C (-67 °F)	2.5 kA			Rated breaking capacity at 28 VDC: 6000 A	Push-Pull		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 Free	1.03 in (26.16 mm)	MIL-C-5809	1	121 °C (249.8 °F)
2909903	Phoenix Contact	Thermal Circuit Breaker
1620-3-5A	E-t-a Elektrotechnische Apparate	Thermal Circuit Breaker	Panel Mount		12 V	5 A	Quick Connect	-40 °C (-40 °F)	150 A				Reset Button		0.524 in (13.3 mm)	0.276 in (7 mm)	Corrosion Resistant; IP00; IP40		Trip	0.984 in (25 mm)		1	85 °C (185 °F)
1620-3-15A	E-t-a Elektrotechnische Apparate	Thermal Circuit Breaker	Panel Mount		12 V	15 A	Quick Connect	-40 °C (-40 °F)	150 A				Reset Button		0.524 in (13.3 mm)	0.276 in (7 mm)	Corrosion Resistant; IP00; IP40		Trip	0.984 in (25 mm)		1	85 °C (185 °F)
1620-3-30A	E-t-a Elektrotechnische Apparate	Thermal Circuit Breaker	Panel Mount		12 V	30 A	Quick Connect	-40 °C (-40 °F)	150 A				Reset Button		0.524 in (13.3 mm)	0.276 in (7 mm)	Corrosion Resistant; IP00; IP40		Trip	0.984 in (25 mm)		1	85 °C (185 °F)
1620-3-20A	E-t-a Elektrotechnische Apparate	Thermal Circuit Breaker	Panel Mount		12 V	20 A	Quick Connect	-40 °C (-40 °F)	150 A				Reset Button		0.524 in (13.3 mm)	0.276 in (7 mm)	Corrosion Resistant; IP00; IP40		Trip	0.984 in (25 mm)		1	85 °C (185 °F)
W28-XQ1A-10	TE Connectivity	Thermal Circuit Breaker	Panel Mount	250 V	32 V	10 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
W28-XQ1A10	TE Connectivity	Thermal Circuit Breaker	Panel Mount	250 V	32 V	10 A	Quick Connect				2.2 s		Push To Reset						Series Trip			1
W28XQ1A10	TE Connectivity	Thermal Circuit Breaker	Panel Mount	250 V	32 V	10 A	Quick Connect				2.2 s		Push To Reset						Series Trip			1
W31-X2M1G-5	TE Connectivity	Thermal Circuit Breaker	Panel Mount	240 V	50 V	5 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
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)
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
2909906	Phoenix Contact	Thermal 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)
2909909	Phoenix Contact	Thermal Circuit Breaker
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
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
QOB250H	Schneider Electric Sa	Thermal 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)
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
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)
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)
QOB250	Schneider Electric Sa	Thermal Circuit Breaker
QOB250HID	Schneider Electric Sa	Thermal Circuit Breaker
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.