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The E-T-A 3120-N321-P7T1-W14FR4-20A is a two-pole 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. The breaker can be easily and quickly reset after tripping.
Key electrical specifications include a 20A current rating and a 415V voltage rating. The datasheet also indicates rated voltages of AC 240V and DC 50V, with a current rating range from 0.1A to 20A. Typical life expectancy is rated at 30,000 cycles for inductive loads and 50,000 cycles for 2-pole configurations.
This circuit breaker features a panel mount design with a rocker actuator and red illumination at 230V. Its positively trip-free mechanism ensures reliable disconnection even when the actuator is blocked. The internal resistance for a 20A rating is less than 0.02 Ohm.
Typical applications for this series include medical and laboratory equipment, apparatus and machine construction, professional tools, household and garden appliances, office machines, audio equipment, and machine tools.
The circuit breaker has an operating voltage of 415V per existing data and rated voltages of 240VAC and 50VDC per the datasheet.
The current rating is 20A, with a current rating range of 0.1A to 20A.
It is a 2-pole circuit breaker.
It uses a rocker actuator.
Yes, it has red illumination with a nominal voltage of 230V.
Typical life is 30,000 cycles at 1x IN inductive and 50,000 cycles for 2-pole inductive.
It is a panel mount circuit breaker.