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The OptiFuse 143050 is a robust circuit breaker engineered for demanding applications requiring high amperage protection. This Type III manual reset breaker offers a 50A current rating and is designed to operate at up to 42VDC.
Constructed with a thermoset plastic body (UL94V-0) and nickel-plated terminals, the 143050 is built for durability. Its waterproof design and IP67 ingress protection make it suitable for harsh environments. The breaker features a panel mount design with 1/4"-28 studs for secure installation.
Key specifications include an interrupting rating of 3000A at 30VDC, an operating temperature range of -32°C to 82°C, and ignition protection compliant with SAE J1171. It also meets testing standards such as SAE J553 and IEC 60934.
This circuit breaker is ideal for applications where reliable overcurrent protection is critical, such as in automotive, marine, or industrial systems.
The current rating is 50A.
The voltage rating is 42VDC.
It features a manual reset.
It is designed for panel mounting.
The operating temperature range is -32°C to 82°C.
Yes, it has an IP67 ingress protection rating.
Yes, it is ignition protected according to SAE J1171.