The 3120-N521-P7T1-W01D-10A is a thermal circuit breaker that combines overcurrent protection and an ON/OFF switch function in a single component. This model is a 2-pole, 10A device featuring a thermal trip mechanism, a black non-illuminated rocker actuator, and blade terminals. It is designed for snap-in mounting in a 44.5 x 22 mm panel cutout. The breaker has voltage ratings of AC 240V and DC 50V and features a positively trip-free mechanism for reliable circuit disconnection. It is well-suited for overload protection in applications like medical equipment, machine tools, and household appliances.