3120-F521-H7T1-W19DG3-3A The E-T-A 3120-F521-H7T1-W19DG3-3A is a 2-pole thermal circuit breaker with a 3A current rating and 250V voltage rating. It features a rocker actuator and panel mount design.
Mfr Part #:

3120-F521-H7T1-W19DG3-3A

Mfr Name: ETA
ETA
The E-T-A 3120-F521-H7T1-W19DG3-3A is a 2-pole thermal circuit breaker with a 3A current rating and 250V voltage rating. It features a rocker actuator and panel mount design.
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$ Price Range: $0.99

3120-F521-H7T1-W19DG3-3A Specifications Quick View

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

3120-F521-H7T1-W19DG3-3A Description

Short technical summary and product information.

This E-T-A 3120-F521-H7T1-W19DG3-3A is a thermal circuit breaker designed for overload protection of motors, pumps, transformers, and cables. It functions as an ON/OFF switch with integral overcurrent protection, utilizing a bimetal trip element.

 

Key electrical specifications include a 3A current rating and a 250V voltage rating. This model is a 2-pole unit with a rocker actuator and green illumination at 115V. It is designed for panel mounting.

 

Typical applications for this circuit breaker include medical and laboratory equipment, apparatus and machine construction, professional tools, household and garden appliances, office machines, audio equipment, and machine tools. It meets various international approval standards including CSA, GB, IEC, and UL.

 

The breaker offers reliable switching behavior with a positively trip-free mechanism. Options such as illumination, water splash protection, auxiliary contacts, and remote trip are available for enhanced functionality.

3120-F521-H7T1-W19DG3-3A Quick Information

Product Type: Thermal Circuit Breaker
Canonical Name: E-T-A 3120-F521-H7T1-W19DG3-3A Thermal Circuit Breaker
Subcategory: Thermal Circuit Breaker

3120-F521-H7T1-W19DG3-3A Compliance

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

3120-F521-H7T1-W19DG3-3A Estimated Pricing

Qty Low High
1+ $0.99 $0.99

Estimated market price range - modelled values for guidance only, not live distributor offers.

3120-F521-H7T1-W19DG3-3A Features

  • Thermal circuit breaker with bimetal trip element.
  • Rated for 3A current and 250V voltage.
  • Two-pole configuration for versatile protection.
  • Rocker actuator with green illumination option.
  • Designed for convenient panel mounting.

3120-F521-H7T1-W19DG3-3A Applications

  • Protects motors, pumps, and transformers.
  • Suitable for machine tool applications.
  • Used in medical and laboratory equipment.
  • Ideal for professional tools and appliances.
  • Applicable in office machines and audio gear.

3120-F521-H7T1-W19DG3-3A FAQs

7 frequently asked questions generated from this part’s specifications.
What is the current rating of the E-T-A 3120-F521-H7T1-W19DG3-3A circuit breaker?

The current rating is 3A.

What is the voltage rating for this thermal circuit breaker?

The voltage rating is 250V.

How many poles does the 3120-F521-H7T1-W19DG3-3A have?

This is a 2-pole circuit breaker.

What type of actuator does this E-T-A circuit breaker use?

It uses a rocker actuator.

What is the mounting type for this circuit breaker?

It is designed for panel mounting.

What are the operating temperature limits for this thermal circuit breaker?

The ambient temperature range is -30 to 60 °C.

What is the degree of protection for the operating area of this circuit breaker?

The degree of protection for the operating area is IP40.

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