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The E-T-A 3120-N321-P7T1-W19DG4-20A is a thermal circuit breaker that combines overcurrent protection with the function of an ON/OFF switch. This two-pole device is rated for 20A and operates at up to 250V AC or 50V DC. It features a panel mount design with a rocker actuator for easy operation.
This circuit breaker is suitable for overload protection of motors, pumps, transformers, and cables. It is designed for reliable disconnection and can be easily reset after tripping. The thermal trip element ensures protection against overloads, preventing nuisance tripping and maximizing equipment availability. Its compact design saves space and reduces mounting and wiring time.
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 device is approved by CSA, GB, IEC, and UL standards.
The current rating is 20A.
It is rated for 250V AC and 50V DC.
It uses a panel mount.
It has two poles.
The illumination is green and nominal voltage is 230V.
It is approved by CSA C22.2 No 235, GB 17701, IEC 60934, and UL1077.
The typical life is 30,000 cycles for 1-pole and 50,000 cycles for 2-pole configurations.