Commonly Used Motor Heaters

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The Allen Bradley heater tables below are two of the most common used for sizing standard overload relay protection for Type N and Type W heater elements. The old style type N heater elements are used with Bulletin 709 motor starters and Overload Relay Blocks.

While the Type W heater elements are used with current Bulletin 509 motor starters and Overload Relay Blocks.

Commonly Used Bulbs & Lamps

67-15-025 – 93801S-MP400/IF/BU=H33GL40DX

Sylvania 400w M59 R M400/U/BT28