CHINT · Residual-current circuit breaker with overcurrent protection
Product overview
The CHINT NB310L/3N combines residual-current protection with overload and short-circuit protection. Use the exact pole, current, curve and residual-current version rather than a generic RCCB selection.
Technical selection summary
| Manufacturer model | NB310L/3N; three-phase plus neutral version |
|---|---|
| Pole / supply scope | 3P+N; AC 400 V order rows, 50/60 Hz |
| Current by curve | B: 10 / 13 / 16 / 20 / 25 / 32 / 40 A; C: 6 / 10 / 13 / 16 / 20 / 25 / 32 / 40 A |
| Residual-current options | 30 or 300 mA; Type A or AC using the exact catalogue order row |
| Short-circuit reference | 6 kA for this 3P+N construction |
| Protection / mounting | Overload, short circuit and residual current; 35 mm DIN rail; IP20 device |
| Standard | IEC/EN 61009-1 manufacturer reference |
Do not copy 2P 10 kA, BK/CK or 110 V versions into this 3P+N selection. B6 is excluded from the order rows used here. Type A includes the stated pulsating-DC residual-current response; Type AC covers sinusoidal AC residual currents. Select sensitivity to suit the protection design.
Typical applications
- Distribution circuits requiring coordinated overcurrent and residual-current protection
- Replacement procurement matched to exact CHINT order codes
