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The E-T-A 3120-N311-P7T1-W16DT3-20A is a thermal circuit breaker designed for reliable overload protection. It combines overcurrent protection with the function of an ON/OFF switch in a single component, utilizing a thermal-bimetal trip element.
This single-pole breaker has a current rating of 20A and a voltage rating of up to 415V AC. It is designed for panel mounting and features a rocker actuator. The breaker is suitable for protecting motors, pumps, transformers, and cables, offering quick and easy reset after tripping.
Key features include a positively trip-free mechanism for reliable disconnection and optional functionalities like appliance inlet modules and add-on modules for various control functions. It is also suitable for use in medical equipment according to IEC/EN 60601 standards, ensuring maximum equipment availability through matched overload protection and quick resettability.
Typical applications include medical and laboratory equipment, apparatus and machine construction, professional tools, household and garden appliances, office machines, audio equipment, and machine tools. The space-saving design and reduced mounting and wiring time contribute to increased overall reliability and reduced costs.
The circuit breaker is rated for 415V, 240V AC, and 50V DC.
The current rating is 20A, with an operating range from 0.1A to 20A.
It has 1 pole.
It uses a rocker actuator.
Yes, it has blue illumination with a nominal voltage of 115V.
It holds certifications from CSA (C22.2 No 235), GB (17701), IEC (60934), and UL (1077).
Typical life is 30,000 cycles at 1x rated inductive load for AC 240V and DC 50V, and up to 50,000 cycles under specific 2-pole conditions.