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The E-T-A 3120-N521-P7T1-W14DR4-3.5A is a two-pole thermal circuit breaker that combines overcurrent protection with the function of an ON/OFF switch. 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 rated current of 3.5A and a voltage rating of 415V. It features a rocker actuator and a red illumination indicator for 230V nominal voltage. The internal resistance at 3.5A is typically 0.0565 Ohms.
This circuit breaker is designed for panel mounting and is approved by CSA, GB, IEC, and UL standards. Its positively trip-free mechanism ensures reliable disconnection even when the actuator is blocked. The 3120-N series offers expandable functionality with optional add-on modules for various control and signaling purposes.
Typical applications for this thermal circuit breaker include medical and laboratory equipment, apparatus and machine construction, professional tools, household and garden appliances, office machines, and audio equipment. Its space-saving design and quick resettability contribute to increased equipment availability and reduced mounting and wiring time.
The current rating is 3.5A.
The voltage rating is 415V.
This circuit breaker has two poles.
It is a thermal circuit breaker.
The mounting type is Panel Mount.
Approval agencies include CSA C22.2 No 235, GB 17701, IEC 60934, and UL1077.
The typical internal resistance per pole at 3.5A is 0.0565 Ohms.