Thermal Unit Trip Class 20 Overload Protection Type Melting Alloy Full Load Current 0.45 to 0.52 A 0.45 to 0.53 A 0.46 to 0.54 A 0.47 to 0.55 A 0.48 to 0.56 A 0.49 to 0.57 A 0.51 to 0.61 A 0.53 to 0.59 A 0.54 to 0.62 A 0.57 to 0.63 A NEMA Size 0 00 1 Frame Size B S Compatible Grainger Part Number 1H41 1H411 1H412 1H413 1H414 1H415 1H416 1H417 2BW14 2BW2 2BW21 2BW22 2BW23 2BW25 2BW31 2BW35 2BW7 2PYD9 2PYE6