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Allen Bradley Bulletin 500 Accessories W49

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W49

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The W49 model from Allen Bradley is a thermal overload relay heater element compatible with Bulletin 500 Accessories. This component is designed for various controller sizes, including Size 00, Size 0, and Size 1, and it operates effectively with continuous duty motors that have a service factor of 1.15 or greater.

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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 W49

ManufacturerAllen Bradley
Product TypeThermal Overload Relay Heater Element
Product LineBulletin 500 Accessories
Part NumberW49
Weight0.13 lbs (0.06 kg)
UPC781180154089
Controller Size CompatibilitySize 00, Size 0, Size 1
Motor Duty CompatibilityContinuous duty motors with service factor ≥ 1.15
Trip Time at 600% Rated Current (Class 30)Not applicable (Type WL only)
Trip Time at 600% Rated Current (Class 10)Not applicable (Type J only)
Trip Time at 600% Rated Current (Class 20)≤ 20 seconds
Overload Relay TypeEutectic Alloy Overload Relay
Relay Class ComplianceNEMA ICS 2, Part 4
Rated Voltage Compatibility600 V AC
Size 1 Full Load Amperes (FLA)7.71 A
Size 00–0 Full Load Amperes (FLA)7.63 A
Trip Class20
Heater Element TypeW (Eutectic Alloy)
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The W49 is an essential thermal overload relay heater element developed by Allen Bradley. This component is specified for use with Bulletin 500 Accessories and is compatible with controller sizes including Size 00, Size 0, and Size 1. It is particularly suited for continuous duty motors rated with a service factor of 1.15 or higher.

The device employs a eutectic alloy for its functioning, classified as Type W. This ensures reliable performance under overload conditions. It adheres to NEMA ICS 2, Part 4 standards, ensuring compliance with industry requirements. The rated voltage for this heater element is up to 600 volts AC.

The trip timing for the 600% rated current varies by class; for Class 20, it is limited to a maximum of 20 seconds while typically not applicable for Class 10 and Class 30 (Type WL and Type J, respectively). This heater also supports full load amperes ratings, with 7.63 A for Sizes 00 and 0, and 7.71 A for Size 1, making it versatile for a range of applications.