8 A Circuit Breaker 8

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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	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
3D8UL	Altech	Thermal Magnetic Circuit Breaker	DIN Rail Mount	480 V		8 A	Snap On	-25 °C (-13 °F)	10 kA		Toggle Handle	Bulk	4.146 in (105.3 mm)	2.067 in (52.5 mm)			Trip	2.693 in (68.4 mm)	CE, CUL, UL	3	55 °C (131 °F)
2DU8L	Altech	Thermal Magnetic Circuit Breaker	DIN Rail Mount	480 V		8 A	Snap On	-25 °C (-13 °F)	10 kA		Toggle Handle	Bulk	4.291 in (109 mm)	1.378 in (35 mm)	IP20		Trip	2.362 in (60 mm)	CE, CUL, UL	2	60 °C (140 °F)
3RV2311-1HC10	Siemens	Magnetic Circuit Breaker	DIN Rail Mount	690 V		8 A	Screw And Snap On	-20 °C (-4 °F)	4 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	60 °C (140 °F)
3RV2811-1HD10	Siemens	Thermal Magnetic Circuit Breaker	DIN Rail Mount	690 V		8 A	Screw And Snap On	-20 °C (-4 °F)	4 kA		Rotary Handle		5.669 in (144 mm)	1.772 in (45 mm)	IP00; IP20	5.669 x 1.772 x 3.819 in (144 x 45 x 97 mm)	Trip	3.819 in (97 mm)		3	60 °C (140 °F)
3RV2011-1HA10	Siemens	Thermal Magnetic Circuit Breaker	DIN Rail Mount	690 V	450 V	8 A	Screw And Snap On	-20 °C (-4 °F)	4 kA		Rotary Handle		3.819 in (97 mm)	1.772 in (45 mm)	IP20	3.819 x 1.772 x 3.78 in (97 x 45 x 96 mm)	Trip	3.78 in (96 mm)		3	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)
3RV2011-1HA20	Siemens	Thermal Magnetic Circuit Breaker	DIN Rail Mount	690 V		8 A	Snap On	-20 °C (-4 °F)	4 kA	Interrupting current max at 450 VDC: 10000 A	Handle		4.173 in (106 mm)	1.772 in (45 mm)	IP20	4.173 x 1.772 x 3.815 in (106 x 45 x 96.9 mm)	Trip	3.815 in (96.9 mm)	ATEX; CCC; CE; CSA; EAC; IECEX; KC; UL; VDE	3	60 °C (140 °F)
3120-N321-P7T1-W19DG4-8A	E-t-a Elektrotechnische Apparate	Thermal Circuit Breaker	Panel Mount	240 V	50 V	8 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)

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.