Mfr Part #:

AF1-B2-12-620-433-D

This Littelfuse AF1 series circuit breaker is a 20A, 277V, 1-pole magnetic hydraulic delay type with a rocker actuator. It is panel mount and carries CCC, CSA, UL, and VDE approvals.

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AF1-B2-12-620-433-D Description

Short technical summary and product information.

The Littelfuse AF1-B2-12-620-433-D is a single-pole magnetic hydraulic delay circuit breaker rated for 20A at 277V AC. It uses a rocker actuator and is designed for panel mount installation. The magnetic hydraulic delay mechanism provides reliable overcurrent protection with a time-delay characteristic that helps avoid nuisance tripping from transient inrush currents.

This circuit breaker is approved by CCC, CSA, UL, and VDE, making it suitable for a wide range of commercial and industrial applications. The non-illuminated rocker actuator offers a clear on/off indication and easy manual reset. The panel mount design allows for straightforward integration into control panels and equipment enclosures.

AF1-B2-12-620-433-D Quick Information

Product Type: Circuit Breaker

Canonical Name: AF1 Series 20A 1-Pole Magnetic Hydraulic Delay Circuit Breaker

Subcategory: Magnetic Circuit Breaker

AF1-B2-12-620-433-D Compliance

RoHS Status: RoHS Compliant

Moisture Sensitivity Level (MSL): 1 Unlimited

REACH Status: REACH Unaffected

AF1-B2-12-620-433-D Features

20A current rating for overcurrent protection.
277V AC voltage rating for line voltage applications.
Single-pole magnetic hydraulic delay breaker.
Rocker actuator for easy on/off control.
Panel mount design for enclosure integration.

AF1-B2-12-620-433-D Applications

Overcurrent protection in commercial power distribution.
Branch circuit protection in industrial control panels.
Equipment protection in HVAC and lighting systems.
Power supply input protection for machinery.

AF1-B2-12-620-433-D FAQs

7 frequently asked questions generated from this part’s specifications.

What is the current rating of this circuit breaker?

The current rating is 20A.

What is the voltage rating of this circuit breaker?

The voltage rating is 277V.

What type of breaker is this?

This is a magnetic hydraulic delay circuit breaker.

How many poles does this circuit breaker have?

It has 1 pole.

What type of actuator does this breaker use?

It uses a rocker actuator.

What is the mounting type for this circuit breaker?

It is panel mount.

What agency approvals does this circuit breaker have?

It is approved by CCC, CSA, UL, and VDE.

AF1-B2-12-620-433-D Alternate Parts

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The Littelfuse Inc. AJ1-B0-14-620-5C3-D is a single-pole, magnetic hydraulic delay circuit breaker. It features a 20A current rating and a 277V voltage rating.

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