| Type of Motor | Nontime Delay Fuse | Dual Element (TD) Fuse | Instantaneous Trip Breaker | Inverse Time Breaker |
|---|---|---|---|---|
| Single-Phase | 300% | 175% | 800% | 250% |
| AC Polyphase | 300% | 175% | 800% | 250% |
| Squirrel Cage | 300% | 175% | 800% | 250% |
| Design B Energy Eff. | 300% | 175% | 1100% | 250% |
| Synchronous | 300% | 175% | 800% | 250% |
| Wound Motor | 150% | 150% | 800% | 150% |
| DC | 150% | 150% | 250% | 150% |
| Type of Motor | Nontime Delay Fuse | Dual Element (TD) Fuse | Instantaneous Trip Breaker | Inverse Time Breaker |
|---|---|---|---|---|
Select the FLC, Full Load Current, of your motor.
Use NEC Tables 430.247, 430.248, 430.249, or 430.250 to find your values.