3120-N321-P7T1-W01D-4A The E-T-A 3120-N321-P7T1-W01D-4A is a 2-pole thermal circuit breaker designed for overcurrent protection and switch functionality. It features a panel mount design.
Mfr Part #:

3120-N321-P7T1-W01D-4A

Mfr Name: ETA
ETA
The E-T-A 3120-N321-P7T1-W01D-4A is a 2-pole thermal circuit breaker designed for overcurrent protection and switch functionality. It features a panel mount design.
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3120-N321-P7T1-W01D-4A Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
Actuator Type
Approval Agency
Breaker Type
Current Rating
Current Rating (Amps)
Illumination
Mounting Type
Number of Poles
Tape & Reel
Voltage Rating

3120-N321-P7T1-W01D-4A Description

Short technical summary and product information.

The E-T-A 3120-N321-P7T1-W01D-4A is a thermal circuit breaker that combines overcurrent protection with ON/OFF switch functionality. It utilizes a thermal bimetal trip element and is suitable for protecting motors, pumps, transformers, and cables from overload conditions. The breaker can be easily and quickly reset after tripping.

 

This 2-pole device has a current rating of 4A and a voltage rating of up to 415V AC or 50V DC. It is designed for panel mounting and features a rocker actuator. The 3120-N series offers options for enhanced functionality, including add-on modules for low voltage release, auxiliary contacts, and remote trip capabilities.

 

Typical applications for this circuit breaker include medical and laboratory equipment, apparatus and machine construction, professional tools, household appliances, office machines, and audio equipment. It is approved by CSA, GB, IEC, and UL standards.

3120-N321-P7T1-W01D-4A Quick Information

Product Type: Thermal Circuit Breaker
Series: 3120-N
Canonical Name: E-T-A 3120-N Series Thermal Circuit Breaker
Subcategory: Thermal

3120-N321-P7T1-W01D-4A Compliance

RoHS Status: RoHS Compliant
Moisture Sensitivity Level (MSL): 1 Unlimited
REACH Status: REACH Unaffected

3120-N321-P7T1-W01D-4A Features

  • 2-pole thermal circuit breaker with switch function.
  • Rated for 4A current and 415V AC / 50V DC.
  • Panel mount design with rocker actuator.
  • Suitable for motor, pump, and transformer protection.
  • Approved by CSA, IEC, and UL standards.

3120-N321-P7T1-W01D-4A Applications

  • Ideal for motor overload protection.
  • Used in pumps and transformer circuits.
  • Suitable for cable protection applications.
  • Applicable in medical equipment.
  • Used in machine construction.

3120-N321-P7T1-W01D-4A FAQs

7 frequently asked questions generated from this part’s specifications.
What are the voltage ratings of the 3120-N321-P7T1-W01D-4A?

The breaker is rated for 240V AC and 50V DC, with an additional rating of 415V.

What is the current rating of this circuit breaker?

The continuous current rating is 4A, with an operating range of 0.1-20A.

How many poles does this breaker have?

It is a 2-pole circuit breaker.

What type of actuator does it use?

It uses a rocker actuator.

What mounting type is supported?

The breaker is designed for panel mount installation.

What is the typical life of this breaker?

30,000 cycles at rated current under inductive load at 240V AC or 28V DC.

What approvals does this circuit breaker have?

It is approved to CSA C22.2 No 235, GB 17701, IEC 60934, and UL1077.

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