Nec Ocpd Ratings: 430.52(C)(1)
instantaneous trip breaker ac squirrel cage design b 1100A to inverse time breaker 2017 single phase 250pct
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) | instantaneous trip breaker ac squirrel cage design b 1100A | Maximum OCPD for motor branch circuit — % of motor FLC | instantaneous trip breaker | — | ac squirrel cage design b | — | 1,100 | NEC (NFPA 70) Table 430.52(C)(1) |
| 430.52(C)(1) | instantaneous trip breaker ac squirrel cage other 800A | Maximum OCPD for motor branch circuit — % of motor FLC | instantaneous trip breaker | — | ac squirrel cage other | — | 800 | NEC (NFPA 70) Table 430.52(C)(1) |
| 430.52(C)(1) | instantaneous trip breaker dc constant voltage 250A | Maximum OCPD for motor branch circuit — % of motor FLC | instantaneous trip breaker | — | dc constant voltage | — | 250 | NEC (NFPA 70) Table 430.52(C)(1) |
| 430.52(C)(1) | instantaneous trip breaker single phase 800A | Maximum OCPD for motor branch circuit — % of motor FLC | instantaneous trip breaker | — | single phase | — | 800 | NEC (NFPA 70) Table 430.52(C)(1) |
| 430.52(C)(1) | instantaneous trip breaker synchronous 800A | Maximum OCPD for motor branch circuit — % of motor FLC | instantaneous trip breaker | — | synchronous | — | 800 | NEC (NFPA 70) Table 430.52(C)(1) |
| 430.52(C)(1) | instantaneous trip breaker wound rotor 800A | Maximum OCPD for motor branch circuit — % of motor FLC | instantaneous trip breaker | — | wound rotor | — | 800 | NEC (NFPA 70) Table 430.52(C)(1) |
| 430.52(C)(1) | inverse time breaker 2017 ac polyphase other than wound rotor 250pct | Motor branch-circuit protection: inverse time breaker for AC polyphase motors other than wound-rotor — max 250% of full-load current | inverse time breaker | 250 | AC polyphase motors other than wound-rotor | 430.52 | — | NEC (NFPA 70) 2017 Edition Table 430.52 |
| 430.52(C)(1) | inverse time breaker 2017 dc constant voltage 150pct | Motor branch-circuit protection: inverse time breaker for DC (constant voltage) — max 150% of full-load current | inverse time breaker | 150 | DC (constant voltage) | 430.52 | — | NEC (NFPA 70) 2017 Edition Table 430.52 |
| 430.52(C)(1) | inverse time breaker 2017 design b energy efficient 250pct | Motor branch-circuit protection: inverse time breaker for Design B energy-efficient — max 250% of full-load current | inverse time breaker | 250 | Design B energy-efficient | 430.52 | — | NEC (NFPA 70) 2017 Edition Table 430.52 |
| 430.52(C)(1) | inverse time breaker 2017 single phase 250pct | Motor branch-circuit protection: inverse time breaker for Single-phase motors — max 250% of full-load current | inverse time breaker | 250 | Single-phase motors | 430.52 | — | NEC (NFPA 70) 2017 Edition Table 430.52 |
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