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The E-T-A 3120-N521-PTT1-W02D-5A is a thermal circuit breaker that combines overcurrent protection with an ON/OFF switch function. It utilizes a thermal-bimetal trip element and is suitable for overload protection of motors, pumps, transformers, and cables. This 2-pole breaker has a current rating of 5A and a voltage rating of 415V.
Designed for panel mounting with a rocker actuator, this circuit breaker offers reliable disconnection even with a blocked actuator due to its positively trip-free mechanism. It can be easily and quickly reset after tripping. The datasheet indicates typical life expectancies of 30,000 cycles for 1-pole operation and 50,000 cycles for 2-pole operation under specific conditions.
Typical applications for this type of thermal circuit breaker include medical and laboratory equipment, apparatus and machine construction, professional tools, household and garden appliances, office machines, audio equipment, and machine tools. It is also suitable for use in medical equipment according to IEC/EN 60601.
The primary voltage rating is 415V AC. Additionally, the rated voltages per datasheet are AC 240V and DC 50V.
This model is rated for 5A continuous current.
It is a 2-pole circuit breaker.
It is a thermal circuit breaker.
It is designed for panel mount installation.
It is certified to CSA C22.2 No 235, GB 17701, IEC 60934, and UL1077.
The typical life is 50,000 cycles at 1x rated current inductive load.