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Allen Bradley Bulletin 1489 1489-M3D500

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1489-M3D500

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The 1489-M3D500 is a miniature circuit breaker manufactured by Allen Bradley, designed for efficient electrical protection. With a 50 A rated current, it operates at 480Y/277 V AC and features a trip curve of type D, ideal for various applications.

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Rockwell Disclaimer: The product is used surplus. DO Supply is not an authorized surplus dealer or affiliate for the Manufacturer of this product. The product may have older date codes or be an older series than that available direct from the factory or authorized dealers. Because DO Supply is not an authorized distributor of this product, the Original Manufacturer's warranty does not apply. While many Allen-Bradley PLC products will have firmware already installed, DO Supply makes no representation as to whether a PLC product will or will not have firmware and, if it does have firmware, whether the firmware is the revision level that you need for your application. DO Supply also makes no representations as to your ability or right to download or otherwise obtain firmware for the product from Rockwell, its distributors, or any other source. DO Supply also makes no representations as to your right to install any such firmware on the product. DO Supply will not obtain or supply firmware on your behalf. It is your obligation to comply with the terms of any End-User License Agreement or similar document related to obtaining or installing firmware.

Technical specifications for 1489-M3D500

ManufacturerAllen Bradley
Product TypeMiniature Circuit Breaker
Product LineBulletin 1489
Part Number1489-M3D500
Weight3.00 lbs (1.36 kg)
UPC885630618272
Trip CurveCurve D
Number of Poles3-pole
Rated Voltage480Y/277 V
Voltage TypeAC
Min. Frequency50 Hz
Max. Frequency60 Hz
Rated Current50 A
Short-Circuit Interrupting Capacity10 kA
IP RatingIP20
Wire Size25 mm²
Conductor Size35 mm²
Mounting TypeDIN-rail Mount
Terminal TypeScrew Terminals
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The Allen Bradley 1489-M3D500 functions as a miniature circuit breaker that efficiently protects electrical circuits. Rated for 50 amperes, this device operates at a voltage level of 480Y/277 Volts AC, accommodating a range of common applications. The tripping characteristics conform to Curve D standards, ensuring appropriate responsiveness under fault conditions.

This circuit breaker consists of three poles, making it suitable for use in three-phase circuits. Its short-circuit interrupting capability is rated at 10 kA, allowing it to handle significant fault currents without failure.

The 1489-M3D500 can operate within a frequency range of 50 Hz to 60 Hz, making it compatible with various electrical systems. For installation, it provides a DIN-rail mounting option, simplifying the integration process into control panels. An IP20 rating signifies that this unit offers limited protection against solid foreign objects but is not designed for water exposure. The wire size can accommodate conductors measuring up to 25 mm², with the larger conductor size rated at 35 mm², effectively supporting solid connections throughout its operational lifespan.