Allen Bradley W21

The Allen Bradley catalog number W21 refers to a heater element designed for eutectic alloy type overload relays used in Bulletin 500 line starters. This component is suited for trip class 20 applications and is available in Type W, covering sizes 00 to 0 with a full load amperage of 0.54, as well as size 1 with a full load amperage of 0.55. For other amperage ratings, additional documentation is available. This heater element is distributed by BSP Automation, providing a reliable option for overload protection in motor control setups.

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