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127-T12-H-4A The E-T-A 127-T12-H-4A is a single-pole thermal overcurrent circuit breaker designed for panel mounting. It features a push-to-reset actuator and a 4A current rating.
Mfr Part #:

127-T12-H-4A

Mfr Name: ETA
ETA
The E-T-A 127-T12-H-4A is a single-pole thermal overcurrent circuit breaker designed for panel mounting. It features a push-to-reset actuator and a 4A current rating.
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127-T12-H-4A 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
Mounting Type
Number of Poles
Voltage Rating
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127-T12-H-4A Description

Short technical summary and product information.

This E-T-A 127-T12-H-4A is a single-pole thermal overcurrent circuit breaker, part of the 127 series. It is designed with a push-to-reset, trip-free snap action mechanism and is suitable for panel mounting.

 

The circuit breaker has a voltage rating of 250V AC and a current rating of 4A. It offers an interrupting capacity of 200A for 6-12A and 300A for 13-25A at Icn, and 2,000A at AC 250V and 2,500A at DC 50V under UL 1077 standards. The operating temperature range is -20 to +60 °C.

 

Approvals include CSA C22.2 No 235, GB 17701, IEC 60934, and UL1077. The device has a degree of protection of IP40 in the operating area. Typical applications include motors, transformers, solenoids, battery chargers, and extra low voltage systems.

127-T12-H-4A Quick Information

Product Type: Thermal Overcurrent Circuit Breaker
Series: 127
Canonical Name: E-T-A 127-T12-H-4A Single Pole Thermal Overcurrent Circuit Breaker
Subcategory: Thermal Overcurrent

127-T12-H-4A Compliance

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

127-T12-H-4A Features

  • Single pole thermal overcurrent circuit breaker.
  • Rated for 250V AC and 4A current.
  • Panel mountable with push-to-reset actuator.
  • Approved by UL, CSA, IEC, and GB standards.
  • Operates in -20 to 60 °C temperature range.

127-T12-H-4A Applications

  • Suitable for motor protection.
  • Used for transformer circuits.
  • Applicable to solenoids.
  • Designed for battery chargers.
  • Ideal for low voltage systems.

127-T12-H-4A FAQs

7 frequently asked questions generated from this part’s specifications.
What is the voltage rating of the 127-T12-H-4A?

250V AC (UL) and 50V DC.

What is the current rating?

4A.

What type of circuit breaker is it?

Thermal.

How many poles does it have?

1 pole.

What is the operating temperature range?

-20°C to +60°C.

What approvals does it have?

CSA C22.2 No 235, GB 17701, IEC 60934, UL1077.

What is the interrupting capacity?

200A (IEC) for 6-12A, 300A for 13-25A; 2,000A at 250V AC (UL), 2,500A at 50V DC.

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