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Allen Bradley Bulletin 500 Accessories W71

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W71

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The W71 heater element is a vital component designed for overload relays within Allen Bradley's Bulletin 500 Accessories series. This unit, crafted from eutectic alloy, meets Class 20 trip specifications and supports various operational demands across multiple sizes.

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Not an Authorized Distributor: DO Supply is not an authorized distributor for listed manufacturers or tradenames and therefore the manufacturer's warranty does not apply. All of our products come with DO Supply's 2-year warranty.
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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 W71

ManufacturerAllen Bradley
Product TypeHeater Element for Overload Relay
Product LineBulletin 500 Accessories
Part NumberW71
Weight0.06 lbs (0.03 kg)
UPC781180512780
MaterialEutectic Alloy
Trip ClassClass 20
SizesSize 2, 3, and 4
Full Load Amps at Size 253 A
Full Load Amps at Size 362 A
Full Load Amps at Size 466 A
Operating Temperature Range0 to 40°C
Storage Temperature Range0 to 40°C
Installation Altitude1000 m
Relative Humidity5 to 95% (Non-Condensing)
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The W71 heater element from Allen Bradley is specifically engineered for use in overload relays, constituting a key part of the Bulletin 500 Accessories lineup. This heater uses eutectic alloy as its primary material, ensuring reliable thermal performance and compliance with industrial standards.

Designed for Class 20 operations, the W71 is available in three sizes: Size 2, Size 3, and Size 4. Each size correlates to specific full load amperage ratings. Specifically, the Size 2 variant can handle up to 53 A, while Size 3 supports 62 A, and Size 4 accommodates 66 A.

This heater element maintains functionality in a temperature range of 0 to 40°C, making it suitable for typical operational environments. It can also be stored in the same temperature range. Furthermore, the W71 heater element is approved for installation at an altitude of 1000 meters, allowing for flexibility in various applications. Humidity tolerance is acceptable between 5% and 95% (non-condensing), providing reliable operation in diverse conditions.