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Allen Bradley 1489-M1D020 Miniature Circuit Breaker - 2A, 1 Pole

Allen Bradley 1489-M1D020: 1-Pole, 2A Miniature Circuit Breaker with D-Curve Trip.

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ManufacturerAllen Bradley

Part number1489-M1D020

Amperage 2A

Poles 1

Trip Type D-Curve

Voltage 277V AC/48V DC (UL/CSA), 230V AC (IEC/EN)

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Single Pole Unit D-Curve for High Inrush Thermal-Magnetic Operation UL489 & IEC Certified DIN Rail Mountable Robust Protection

Product description

The Allen Bradley 1489-M1D020 is a 1-pole miniature circuit breaker designed for robust branch circuit protection, particularly for circuits with high inrush currents. It features a thermal-magnetic trip mechanism with a D-curve, enabling it to handle significant transient surges, such as those from transformers or motor starters. This breaker is rated for 2A and operates at 277V AC / 48V DC (UL/CSA) or 230V AC (IEC/EN), with a 15 kAIC interrupt rating.

This circuit breaker is essential for applications requiring protection against high transient currents without nuisance tripping, commonly found in industrial automation, power supplies, and control systems. Its D-curve characteristic ensures reliable operation when dealing with inductive loads or devices with large start-up surges.

Stanlo Automation, your veteran-owned distributor of surplus industrial automation parts, offers the Allen Bradley 1489-M1D020. We provide dependable, cost-effective solutions to keep your operations secure and efficient.

Technical specifications

Amperage	2A
Poles	1
Trip Type	D-Curve
Voltage	277V AC/48V DC (UL/CSA), 230V AC (IEC/EN)
Interrupt Rating	15 kAIC
Series	1489-M

Common applications

High Inrush Current Loads

Transformer Protection

Motor Starters

Control Systems

Power Supplies

Industrial Automation

Compatible systems

Suitable for integration into industrial control panels and electrical systems that utilize DIN rail mounting and meet UL489 safety standards.

Also known as

Allen Bradley 1489M1D020 Bulletin 1489-M 2A Breaker 1489 Series D-Curve 2A

Replaces / compatible with

The 1489-M1D020 can be used to replace existing 2A, 1-pole miniature circuit breakers in UL489 compliant systems, especially those requiring D-curve characteristics for high inrush loads.

Technical note

Expert tip

When specifying the 1489-M1D020 for transformer protection, ensure the transformer's inrush current characteristics are within the D-curve's tolerance to prevent nuisance tripping.

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Frequently asked questions

What is the purpose of the D-curve trip type on the Allen Bradley 1489-M1D020 circuit breaker?

The D-curve trip type on the Allen Bradley 1489-M1D020 is designed to tolerate high inrush currents, typically 10 to 20 times the breaker's rated amperage. This makes it suitable for protecting devices like transformers, motor controls, and other equipment that draw significant current upon startup.