3120-N521-PTT1-W01D-20A The E-T-A 3120-N521-PTT1-W01D-20A is a 2-pole thermal circuit breaker designed for panel mounting. It offers a current rating of 20A and voltage ratings of 415V AC and 50V DC.
Mfr Part #:

3120-N521-PTT1-W01D-20A

Mfr Name: ETA
ETA
The E-T-A 3120-N521-PTT1-W01D-20A is a 2-pole thermal circuit breaker designed for panel mounting. It offers a current rating of 20A and voltage ratings of 415V AC and 50V DC.
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3120-N521-PTT1-W01D-20A 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
Voltage Rating

3120-N521-PTT1-W01D-20A Description

Short technical summary and product information.

The E-T-A 3120-N521-PTT1-W01D-20A is a thermal circuit breaker that combines overcurrent protection with the function of an ON/OFF switch. It features a bimetal trip element and is suitable for overload protection of motors, pumps, transformers, and cables. The device can be easily and quickly reset after tripping.

 

Key electrical specifications include a 20A current rating and voltage ratings of 415V AC and 50V DC. This 2-pole breaker is designed for panel mounting and features a rocker actuator. It is approved by CSA, GB, IEC, and UL standards.

 

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 positively trip-free mechanism ensures reliable disconnection even when the actuator is blocked.

3120-N521-PTT1-W01D-20A Quick Information

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

3120-N521-PTT1-W01D-20A Compliance

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

3120-N521-PTT1-W01D-20A Features

  • 2-pole thermal circuit breaker with switch function.
  • Rated for 415V AC and 50V DC operation.
  • 20A current rating for overload protection.
  • Panel mount design with rocker actuator.
  • Approved by CSA, GB, IEC, and UL.

3120-N521-PTT1-W01D-20A Applications

  • Ideal for motor and pump overload protection.
  • Suitable for transformer and cable protection.
  • Used in medical and laboratory equipment.
  • Applicable in machine construction and professional tools.
  • Designed for household and garden appliances.

3120-N521-PTT1-W01D-20A FAQs

7 frequently asked questions generated from this part’s specifications.
What is the voltage rating of the 3120-N521-PTT1-W01D-20A?

The circuit breaker is rated for 415V AC and 50V DC.

What is the current rating of this circuit breaker?

The current rating is 20A.

What type of breaker is the 3120-N521-PTT1-W01D-20A?

It is a thermal circuit breaker.

How many poles does this breaker have?

It has 2 poles.

What actuator type does this breaker use?

It uses a rocker actuator.

What mounting type is supported?

Panel mount.

What approvals does the 3120-N521-PTT1-W01D-20A hold?

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

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