Pollak Type III single-rate thermal circuit breaker with switchable manual control, rated for 30 V and 120 A, designed to protect DC electrical circuits from overload. As a Type III thermal breaker, it employs a thermal element to interrupt current when the load exceeds its set rating, and the switchable manual control provides deliberate on/off operation for maintenance or testing. This device is suitable for low-voltage DC installations that require a 30 V, 120 A protection solution.
