Thermal Unit Trip Class 20 Overload Protection Type Melting Alloy Full Load Current 27.1 to 28.7 A 33.6 to 36 A 35.2 to 36.1 A NEMA Size 0 00 1 1P 2 Frame Size B S Compatible with Grainger Part Number 11W21 11W228 11W233 11W24 11W25 1H416 2BW23 2CG8 2PYE8 48P834 4DF19 4DF22 4DF23