Nec Ocpd Ratings: 430.52(C)(1)
dual element time delay fuse single phase 175A to instantaneous trip breaker 2017 wound rotor 800pct
NEC overcurrent protective device (OCPD) ratings — standard ampere ratings for fuses and circuit breakers per Section 240.6(A), motor branch circuit protection per 430.52(C)(1), overload relay sizing per 430.32, and transformer OCPD sizing per 450.3
| nec section | record id | description | device type | max percent of flc | motor type | nec table | rating amp (A) | standard |
|---|---|---|---|---|---|---|---|---|
| 430.52(C)(1) | dual element time delay fuse single phase 175A | Maximum OCPD for motor branch circuit — % of motor FLC | dual element time delay fuse | — | single phase | — | 175 | NEC (NFPA 70) Table 430.52(C)(1) |
| 430.52(C)(1) | dual element time delay fuse synchronous 175A | Maximum OCPD for motor branch circuit — % of motor FLC | dual element time delay fuse | — | synchronous | — | 175 | NEC (NFPA 70) Table 430.52(C)(1) |
| 430.52(C)(1) | dual element time delay fuse wound rotor 150A | Maximum OCPD for motor branch circuit — % of motor FLC | dual element time delay fuse | — | wound rotor | — | 150 | NEC (NFPA 70) Table 430.52(C)(1) |
| 430.52(C)(1) | instantaneous trip breaker 2017 ac polyphase other than wound rotor 800pct | Motor branch-circuit protection: instantaneous trip breaker for AC polyphase motors other than wound-rotor — max 800% of full-load current | instantaneous trip breaker | 800 | AC polyphase motors other than wound-rotor | 430.52 | — | NEC (NFPA 70) 2017 Edition Table 430.52 |
| 430.52(C)(1) | instantaneous trip breaker 2017 dc constant voltage 250pct | Motor branch-circuit protection: instantaneous trip breaker for DC (constant voltage) — max 250% of full-load current | instantaneous trip breaker | 250 | DC (constant voltage) | 430.52 | — | NEC (NFPA 70) 2017 Edition Table 430.52 |
| 430.52(C)(1) | instantaneous trip breaker 2017 design b energy efficient 1100pct | Motor branch-circuit protection: instantaneous trip breaker for Design B energy-efficient — max 1100% of full-load current | instantaneous trip breaker | 1,100 | Design B energy-efficient | 430.52 | — | NEC (NFPA 70) 2017 Edition Table 430.52 |
| 430.52(C)(1) | instantaneous trip breaker 2017 single phase 800pct | Motor branch-circuit protection: instantaneous trip breaker for Single-phase motors — max 800% of full-load current | instantaneous trip breaker | 800 | Single-phase motors | 430.52 | — | NEC (NFPA 70) 2017 Edition Table 430.52 |
| 430.52(C)(1) | instantaneous trip breaker 2017 squirrel cage other than design b 800pct | Motor branch-circuit protection: instantaneous trip breaker for Squirrel cage - other than Design B energy-efficient — max 800% of full-load current | instantaneous trip breaker | 800 | Squirrel cage - other than Design B energy-efficient | 430.52 | — | NEC (NFPA 70) 2017 Edition Table 430.52 |
| 430.52(C)(1) | instantaneous trip breaker 2017 synchronous 800pct | Motor branch-circuit protection: instantaneous trip breaker for Synchronous (see NEC 430.52 Note 3) — max 800% of full-load current | instantaneous trip breaker | 800 | Synchronous (see NEC 430.52 Note 3) | 430.52 | — | NEC (NFPA 70) 2017 Edition Table 430.52 |
| 430.52(C)(1) | instantaneous trip breaker 2017 wound rotor 800pct | Motor branch-circuit protection: instantaneous trip breaker for Wound-rotor — max 800% of full-load current | instantaneous trip breaker | 800 | Wound-rotor | 430.52 | — | NEC (NFPA 70) 2017 Edition Table 430.52 |
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