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The E-T-A 104-PR3-10A is a miniaturized, single-pole thermal circuit breaker designed for reliable switching behavior with a positively trip-free snap action mechanism. It meets the requirements of EN 60934 (IEC 60934) for R-Type, TO circuit breakers.
Key electrical specifications include a rated voltage of 240V AC and 48V DC, with a current rating of 10A. The interrupting capacity is 6 x IN for AC and DC circuits. It offers a rupture capacity of 2000A at 250V AC and 200A at 48V DC under UL 1077 standards.
This thermal circuit breaker is suitable for through-hole mounting and features a push-to-reset actuator. It operates within an ambient temperature range of -20 to 60 °C. The device provides an ingress protection rating of IP40 in the operating area and IP00 at the terminal area.
Typical applications for this circuit breaker include hand tools, domestic appliances, overcurrent protection of PCB conductor paths, marine vehicles, and mobile homes. It is designed to meet stringent environmental and mechanical stress requirements, including vibration, shock, and corrosion resistance.
The rated voltage is 240 V AC and 48 V DC.
The operating temperature range is -20 to 60 °C.
It uses through-hole mounting with PR3 soldering pins for vertical PCB installation.
The interrupting capacity (Icn) is 6 x IN for both AC and DC.
Under UL 1077, the rupture capacity is 2000 A at 250 V AC and 200 A at 48 V DC.
Typical life depends on current: 1,000 cycles at 0.05-5 A, 500 cycles at 6-8 A, and 50 cycles at 10 A under inductive conditions at 2 x IN. For DC 28 V, 3,000 cycles at 2 x IN.
The degree of protection is IP40 for the operating area and IP00 for the terminal area.