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The OptiFuse 143120 is a Type III manual reset circuit breaker designed for heavy-duty applications. This high amperage breaker offers a waterproof design with an IP67 ingress protection rating, making it suitable for harsh environments.
Key electrical specifications include a current rating of 120A and a voltage rating of 42VDC. The interrupting rating is 3000A at 30VDC, tested to SAE J553 and IEC 60934 standards. It also features ignition protection according to SAE J1171.
Constructed with a thermoset plastic body (UL94V-0) and nickel-plated terminals, this circuit breaker is built for durability. It features a panel mount design with 1/4”-28 studs requiring a maximum torque of 10.3 N.m. The operating temperature range is -32°C to 82°C.
This single-pole circuit breaker is ignition protected and meets SAEJ1171, SAEJ1625, and UL approval agency requirements.
The 143120 is rated for 42 VDC.
The 143120 is rated for 120A.
The operating temperature range is -32°C to 82°C.
It is a Type III manual reset breaker with push-to-reset actuation.
The interrupting rating is 3000A at 30VDC, tested to ABYC E-11.
It has IP67 ingress protection.
It is a panel mount breaker with a maximum studs torque of 10.3 N.m.