Nec Ocpd Ratings: 430.52(C)(1)
inverse time breaker 2017 squirrel cage other than design b 250pct to non time delay fuse ac squirrel cage design b 300A
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) | inverse time breaker 2017 squirrel cage other than design b 250pct | Motor branch-circuit protection: inverse time breaker for Squirrel cage - other than Design B energy-efficient — max 250% of full-load current | inverse time breaker | 250 | Squirrel cage - other than Design B energy-efficient | 430.52 | — | NEC (NFPA 70) 2017 Edition Table 430.52 |
| 430.52(C)(1) | inverse time breaker 2017 synchronous 250pct | Motor branch-circuit protection: inverse time breaker for Synchronous (see NEC 430.52 Note 3) — max 250% of full-load current | inverse time breaker | 250 | Synchronous (see NEC 430.52 Note 3) | 430.52 | — | NEC (NFPA 70) 2017 Edition Table 430.52 |
| 430.52(C)(1) | inverse time breaker 2017 wound rotor 150pct | Motor branch-circuit protection: inverse time breaker for Wound-rotor — max 150% of full-load current | inverse time breaker | 150 | Wound-rotor | 430.52 | — | NEC (NFPA 70) 2017 Edition Table 430.52 |
| 430.52(C)(1) | inverse time breaker ac squirrel cage design b 250A | Maximum OCPD for motor branch circuit — % of motor FLC | inverse time breaker | — | ac squirrel cage design b | — | 250 | NEC (NFPA 70) Table 430.52(C)(1) |
| 430.52(C)(1) | inverse time breaker ac squirrel cage other 250A | Maximum OCPD for motor branch circuit — % of motor FLC | inverse time breaker | — | ac squirrel cage other | — | 250 | NEC (NFPA 70) Table 430.52(C)(1) |
| 430.52(C)(1) | inverse time breaker dc constant voltage 150A | Maximum OCPD for motor branch circuit — % of motor FLC | inverse time breaker | — | dc constant voltage | — | 150 | NEC (NFPA 70) Table 430.52(C)(1) |
| 430.52(C)(1) | inverse time breaker single phase 250A | Maximum OCPD for motor branch circuit — % of motor FLC | inverse time breaker | — | single phase | — | 250 | NEC (NFPA 70) Table 430.52(C)(1) |
| 430.52(C)(1) | inverse time breaker synchronous 250A | Maximum OCPD for motor branch circuit — % of motor FLC | inverse time breaker | — | synchronous | — | 250 | NEC (NFPA 70) Table 430.52(C)(1) |
| 430.52(C)(1) | inverse time breaker wound rotor 150A | Maximum OCPD for motor branch circuit — % of motor FLC | inverse time breaker | — | wound rotor | — | 150 | NEC (NFPA 70) Table 430.52(C)(1) |
| 430.52(C)(1) | non time delay fuse ac squirrel cage design b 300A | Maximum OCPD for motor branch circuit — % of motor FLC | non time delay fuse | — | ac squirrel cage design b | — | 300 | NEC (NFPA 70) Table 430.52(C)(1) |
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