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The E-T-A 104-PR3-0.8A is a single-pole thermal circuit breaker designed for overcurrent protection in low-voltage AC and DC circuits. It is rated for 0.8 A continuous current with operating voltages of 240 VAC and 48 VDC. The push-to-reset actuator provides manual reset after a trip event.
Electrical characteristics include an interrupting capacity of 6 x IN for both AC and DC operation, and a dielectric strength of 3000 VAC. The insulation coordination is rated at 2.5 kV /2 reinforced insulation. The typical life at 2 x IN (inductive) is 1000 cycles for this 0.8 A rating.
Mechanically, the breaker features a through-hole mounting style suitable for PCB installation. It operates over an ambient temperature range of -20 to 60 °C and withstands vibration of 10 g (57-500 Hz) and shock of 25 g (11 ms). The operating area is protected to IP40, while terminal area is IP00.
This compact thermal circuit breaker weighs approximately 10 g and is suited for use in industrial controls, power supplies, telecommunications equipment, and automotive DC systems where reliable overcurrent protection is required.
Rated 240 VAC and 48 VDC.
0.8 A.
1 pole.
Push to reset.
Through hole.
-20 to 60 °C.
2.5 kV /2 reinforced insulation.