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The OptiFuse 143150 is a heavy-duty, high-amp, waterproof circuit breaker with a manual reset function. It is rated for 150A and operates at up to 42VDC. This Type III breaker is designed for panel mounting and features a 1/4"-28 stud terminal configuration with a maximum torque of 10.3 N.m.
The body is constructed from thermoset plastic (UL94V-0) with nickel-plated terminals. It offers an operating temperature range of -32°C to 82°C and is ignition protected according to SAE J1171 standards. The circuit breaker also meets IP67 ingress protection standards, ensuring its suitability for harsh environments.
Electrical specifications include an interrupting rating of 3000A at 30VDC (ABYC E-11). Trip curves are defined for various percentages of rated current, with specific minimum and maximum hold times provided. For example, at 135% of rated current, the hold time is between 50 seconds and 30 minutes. At 100% of rated current, there is no trip for at least 30 minutes.
This circuit breaker is tested to SAE J553 and IEC 60934 standards. It is suitable for applications requiring robust circuit protection in demanding conditions.
The voltage rating is 42 VDC.
The current rating is 150A.
The operating temperature range is -32 °C to 82 °C.
It is designed for panel mounting.
The ingress protection rating is IP67.
Yes, it is ignition protected according to SAE J1171.
At 135% of rated current, the hold time is 50s to 30m. At 200%, it's 12s to 45s. At 300%, it's 3.5s to 15s. At 100%, there is no trip for at least 30 minutes.