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Motor Fuses, and Over Current Protective Devices (OCPD) (NEC 2026)

Enter the FLC, Full Load Current, of your motor. Look in NEC Tables 430.247, 430.248, 430.249, or 430.250 to find your values.

This table picks the maximum standard fuse and breaker sizes, shown in amperes, from the values listed in NEC Table 240.6(A). The table is derived from NEC Table 430.52(C)(1).

Type of Motor Nontime Delay Fuse Dual Element (TD) Fuse Instantaneous Trip Breaker Inverse Time Breaker