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MT1-B-14-620-3-A21-B-T The Littelfuse Inc. MT1-B-14-620-3-A21-B-T is a 1-pole, 20A circuit breaker designed for panel mounting. It features a magnetic (hydraulic delay) trip mechanism and a 250V voltage rating.
Mfr Part #:

MT1-B-14-620-3-A21-B-T

Mfr Name: Littelfuse Inc.
Littelfuse Inc.
The Littelfuse Inc. MT1-B-14-620-3-A21-B-T is a 1-pole, 20A circuit breaker designed for panel mounting. It features a magnetic (hydraulic delay) trip mechanism and a 250V voltage rating.
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MT1-B-14-620-3-A21-B-T 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
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MT1-B-14-620-3-A21-B-T Description

Short technical summary and product information.

This Littelfuse Inc. MT1-B-14-620-3-A21-B-T is a single-pole circuit breaker with a current rating of 20A and a voltage rating of 250V. It utilizes a magnetic (hydraulic delay) tripping mechanism for reliable protection.

 

The breaker is designed for panel mounting, offering a secure and accessible installation point. Its actuator type is push-pull, providing a clear method for operation. The component is approved by CCC and UL489A, indicating compliance with relevant safety standards.

 

Environmental compliance includes RoHS3 compliance, MSL 1, and REACH unaffected status, though these are based on unverified data. The MT1-B-14-620-3-A21-B-T is suitable for applications requiring robust overcurrent protection with a specific delay characteristic.

MT1-B-14-620-3-A21-B-T Quick Information

Product Type: Circuit Breaker
Series: MT1
Canonical Name: Littelfuse Inc. MT1-B-14-620-3-A21-B-T Magnetic Circuit Breaker
Subcategory: Circuit Breaker

MT1-B-14-620-3-A21-B-T Compliance

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

MT1-B-14-620-3-A21-B-T Features

  • 20A current rating for protection.
  • 250V voltage rating suitable for AC.
  • Magnetic (hydraulic delay) trip mechanism.
  • Panel mount design for easy installation.
  • CCC and UL489A approved.

MT1-B-14-620-3-A21-B-T Applications

  • Provides overcurrent protection.
  • Suitable for control panel integration.
  • Used in systems requiring delay.
  • Meets CCC and UL standards.

MT1-B-14-620-3-A21-B-T FAQs

7 frequently asked questions generated from this part’s specifications.
What is the current rating of the MT1-B-14-620-3-A21-B-T?

20A.

What is the voltage rating of this circuit breaker?

250V.

What type of breaker is the MT1-B-14-620-3-A21-B-T?

Magnetic hydraulic delay circuit breaker.

How many poles does this circuit breaker have?

1 pole.

What is the actuator type of this breaker?

Push-pull.

What approvals does this circuit breaker have?

CCC and UL489A.

What is the mounting type for this circuit breaker?

Panel mount.

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