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This E-T-A 1170-21-8A is a single-pole thermal circuit breaker designed for protection in extra low voltage wiring systems found in vehicles and marine craft. It incorporates a push-to-reset, tease-free, trip-free snap action mechanism with a manual release.
The breaker has a current rating of 8A and a voltage rating of 48V DC, with a maximum operating voltage of 58V DC. It offers a degree of protection of IP40 for the operating area and IP00 for the terminal area. The device is built to withstand environmental stresses including vibration, shock, corrosion, and humidity.
Key specifications include an ambient operating temperature range of -40°C to 85°C. The breaker is designed for plug-in mounting with blade terminals compatible with automotive fuse blocks. It meets Type III requirements per SAE J 553.
Typical applications include automotive and marine electrical systems. The breaker combines circuit protection with convenient manual reset functionality, offering a low cost of ownership.
The operating voltage is 48V DC, with a maximum voltage of 58V DC.
The operating temperature range is -40 to 85°C.
The current rating is 8A.
It has 1 pole.
It uses a push-to-reset actuator.
The operating area is IP40, and the terminal area is IP00.
The interrupting capacity is at least 1 break operation at 2000 A.