CHINT · Residual current circuit breaker with overcurrent protection
Product overview
The CHINT 203061 NB1L is an integrated RCBO combining overload, short-circuit and residual-current protection. This 1P+N version has a C25 trip characteristic, 30mA Type A residual-current protection and a 10kA rated short-circuit capacity at 230V AC. The neutral terminal is on the right, and the two-module unit mounts on a 35mm DIN rail.
Technical selection summary
| Ordering code | 203061 |
|---|---|
| Manufacturer ordering model | NB1L/C25-1PN-10-A30 |
| Model designation | NB1L, neutral on the right |
| Poles | 1P+N |
| Rated current / trip curve | 25A / C curve |
| Rated residual operating current | 30mA |
| Residual-current detection | Type A — sinusoidal AC and pulsating DC residual currents |
| Rated voltage / frequency | 230V AC / 50/60Hz |
| Rated short-circuit capacity (Icn) | 10kA |
| Standard | IEC/EN 61009-1 |
| DIN-rail width | 2 modules / 36mm |
| Dimensions (H × W × D) | 86 × 36 × 77mm |
| Compatible accessories | XF9 auxiliary contact; XF9J alarm contact; S9 shunt release; V9 undervoltage release |
Typical applications
- Residential and commercial final distribution circuits
- Socket and lighting circuits requiring combined overcurrent and Type A residual-current protection
Download CHINT NB1L integrated RCBO catalogue (PDF)
Product reference images and drawings
