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Allen Bradley Bulletin 500 Accessories W61

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W61

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The W61 thermal overload relay heater element, produced by Allen Bradley, operates within the Bulletin 500 Accessories series. This component features a W-type heater element made from eutectic alloy and is compatible with a rated voltage of up to 600 V AC.

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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 W61

ManufacturerAllen Bradley
Product TypeThermal Overload Relay Heater Element
Product LineBulletin 500 Accessories
Part NumberW61
Weight0.06 lbs (0.03 kg)
UPC781180154638
Heater Element TypeW (Eutectic Alloy)
Trip Class20
Size 00–0 Full Load Amperes (FLA)22.2 A
Size 1 Full Load Amperes (FLA)22.9 A
Size 2 Full Load Amperes (FLA)23.2 A
Size 3 Full Load Amperes (FLA)25.1 A
Rated Voltage Compatibility600 V AC
Relay Class ComplianceNEMA ICS 2, Part 4
Overload Relay TypeEutectic Alloy Overload Relay
Trip Time at 600% Rated Current (Class 20)≤ 20 seconds
Trip Time at 600% Rated Current (Class 10)Not applicable (Type J only)
Trip Time at 600% Rated Current (Class 30)Not applicable (Type WL only)
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The Allen Bradley W61 is a thermal overload relay heater element belonging to the Bulletin 500 Accessories series. This heater employs a eutectic alloy design, offering effective performance for overload protection applications. Rated for operation up to 600 V AC, it adheres to NEMA ICS 2, Part 4 compliance, ensuring compatibility with various systems. The W61 is classified as a trip class 20 device, optimal for managing electrical loads efficiently.

This unit accommodates several full load ampere ratings to fit different motor sizes. Specifically, for size 00–0, the full load amperes (FLA) is 22.2 A, while size 1 has an FLA of 22.9 A. Size 2 supports an FLA of 23.2 A, and size 3 accommodates a maximum of 25.1 A.

In terms of performance, the W61 exhibits a trip time of less than or equal to 20 seconds when exposed to 600% rated current for Class 20. This trip behavior is indicative of its reliable protection capabilities under fault conditions. Notably, for Class 10 and Class 30, trip times are not applicable for this specific type of heater element. The W61 is designated to meet the demands of industrial applications requiring effective overload protection solutions in various configurations.