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AA1-B0-12-450-4B2-D The AA1-B0-12-450-4B2-D is a 1-pole magnetic (hydraulic delay) circuit breaker rated at 5A and 277V. It features a panel mount design with a lever actuator.
Mfr Part #:

AA1-B0-12-450-4B2-D

Mfr Name: Littelfuse Inc.
Littelfuse Inc.
The AA1-B0-12-450-4B2-D is a 1-pole magnetic (hydraulic delay) circuit breaker rated at 5A and 277V. It features a panel mount design with a lever actuator.
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AA1-B0-12-450-4B2-D 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
SVHC Present
Voltage Rating
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AA1-B0-12-450-4B2-D Description

Short technical summary and product information.

The AA1-B0-12-450-4B2-D is a magnetic hydraulic delay circuit breaker from Littelfuse Inc. Designed for overcurrent protection, it offers a 5A current rating and a voltage rating of 277V. This single-pole breaker uses a hydraulic delay mechanism to provide time-delayed tripping, making it suitable for applications with inrush currents. The panel mount design and lever actuator allow for easy installation and manual reset. It carries approvals from CCC, CSA, UL, and VDE, ensuring compliance with international standards. The breaker is non-illuminated and RoHS3 compliant, but RoHS status is unverified.

AA1-B0-12-450-4B2-D Quick Information

Product Type: Circuit Breaker
Canonical Name: Magnetic (Hydraulic Delay) Circuit Breaker, 5A, 277V, 1 Pole, Panel Mount
Subcategory: Circuit Breaker

AA1-B0-12-450-4B2-D Compliance

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

AA1-B0-12-450-4B2-D Features

  • 5A rated current for reliable circuit protection.
  • 277V voltage rating for AC applications.
  • Single-pole magnetic hydraulic delay mechanism.
  • Panel mount with lever actuator for easy operation.
  • Approvals from CCC, CSA, UL, and VDE.

AA1-B0-12-450-4B2-D Applications

  • Ideal for industrial control panels.
  • Used in power distribution systems.
  • Suitable for motor protection circuits.
  • Applicable in lighting control systems.

AA1-B0-12-450-4B2-D FAQs

7 frequently asked questions generated from this part’s specifications.
What is the current rating of the AA1-B0-12-450-4B2-D?

5A.

What is the voltage rating of this circuit breaker?

277V.

What is the breaker type?

Magnetic (Hydraulic Delay).

How many poles does this circuit breaker have?

1 pole.

What is the mounting type?

Panel Mount.

What is the actuator type?

Lever.

What approvals does this circuit breaker have?

CCC, CSA, UL, VDE.

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