| Category | |
| Manufacturer Name | |
| Actuator Type | |
| Approval Agency | |
| Breaker Type | |
| Current Rating | |
| Current Rating (Amps) | |
| Illumination | |
| Illumination Voltage (Nominal) | |
| Mounting Type | |
| Number of Poles | |
| Voltage Rating |
The E-T-A 3120-N521-P7T1-W19DG3-20A is a thermal circuit breaker designed for reliable overload protection of motors, pumps, transformers, and cables. This 2-pole device combines the functions of a circuit breaker and an ON/OFF switch into a single component, featuring a thermal-bimetal trip element.
It operates at AC 240V and DC 50V, with AC 415V available upon request. The current rating is 20A, with a range of 0.1A to 20A. The breaker is designed for panel mounting and features a rocker actuator. It is suitable for use in medical equipment according to IEC/EN 60601.
Key benefits include maximum equipment availability through overload protection matched to loads, prevention of nuisance tripping, and quick resettability. The positively trip-free mechanism ensures reliable disconnection even with a blocked actuator. Its space-saving design and reduced mounting and wiring time contribute to increased overall reliability and reduced costs.
The voltage rating is 240V AC and 50V DC.
The current rating is 20A.
It has 2 poles.
It is a thermal circuit breaker.
The mounting type is Panel Mount.
The illumination is green and rated for 115V nominal.
Approval agencies include CSA C22.2 No 235, GB 17701, IEC 60934, and UL1077.