CHINT · NL210 Type B residual current circuit breaker
Product overview
The CHINT 782010 NL210 is a 4-pole Type B residual current circuit breaker (RCCB) for protection against earth fault currents on three-phase systems at AC 400/415V~. It carries no overcurrent protection of its own and must be backed by a fuse or circuit breaker — the catalogue specifies a conditional rated short-circuit current (Inc/IΔc) of 10,000A with a 10,000A SCPD fuse. Type B detection covers sinusoidal AC residual currents, pulsed DC residual currents, alternating residual sinusoidal currents up to 1000Hz, and pulsating or smooth DC residual currents whether they appear suddenly or rise slowly. That is what distinguishes it from Type A or Type AC devices and makes it suitable where DC fault components can occur, such as PV inverters, EV chargers and variable-speed drives. With IΔn = 300mA the device provides protection against indirect contact as well as against fire hazard; tripping is instantaneous (≤0.1s at IΔn) with no time delay. A fault current indicator shows which tripping cause applied. The 4-pole version is 72mm wide, 91mm high and 79mm deep, mounts on 35mm DIN rail to EN 60715, and accepts cables up to 35mm² or busbars up to 16mm² at 2.5N·m. Terminals are arranged for connection from either the top or the bottom.
Technical selection summary
| Ordering code | 782010 |
|---|---|
| Ordering designation | NL210 4P 63A 300mA B 10kA |
| Model series | NL210 |
| Device type | Residual current circuit breaker (RCCB), Type B, without overcurrent protection |
| Number of poles | 4P |
| Rated current (In) | 63A |
| Rated residual operating current (IΔn) | 300mA |
| Leakage type (waveform detected) | Type B — sinusoidal AC, pulsed DC, alternating residual sinusoidal up to 1000Hz, pulsating DC and smooth DC residual currents, applied suddenly or slowly rising |
| Rated voltage (Ue) | AC 400/415V~ |
| Rated residual making and breaking capacity (IΔm) | 630A (In = 63A) |
| Conditional rated short-circuit current (Inc/IΔc) | 10,000A |
| SCPD fuse | 10,000A |
| Break time under IΔn | ≤0.1s (instantaneous, no time delay) |
| Rated frequency | 50Hz |
| Rated insulation voltage (Ui) | 500V |
| Rated impulse withstand voltage (Uimp) | 4kV |
| Dielectric test voltage at industrial frequency, 1 min | 2kV |
| Pollution degree | 2 |
| Electrical life | 4,000 cycles |
| Mechanical life | 4,000 cycles |
| Fault current indicator | Yes |
| Degree of protection | IP20 |
| Ambient temperature | -25℃ to +40℃ (daily average ≤35℃) |
| Storage temperature | -25℃ to +70℃ |
| Terminal capacity — cable | 25/35mm² (AWG 18-3 / 18-2) |
| Terminal capacity — busbar | 10/16mm² (AWG 18-8 / 18-5) |
| Tightening torque | 2.5N·m (22 In-lbs) |
| Mounting | On DIN rail EN 60715 (35mm) by means of fast clip device |
| Connection | From top or bottom |
| Overall dimensions (W × H × D) | 72 × 91 × 79 mm (4-pole) |
| Net weight | 0.43kg |
| Add-on devices | AX-5 auxiliary contacts, TC-1 terminal cover |
| Reference standard | IEC/EN 62423, IEC/EN 61008-1 |
| Approvals and certificates | CE, KEMA/VDE (CB, UKCA, SAA and KC certificates also issued for the series) |
| RoHS / REACH | Compliant |
Typical applications
- Three-phase distribution boards requiring 300mA Type B protection
- PV inverter AC output and EV charging points where smooth DC residual current can be present
- Machine and drive panels fed from frequency inverters, where Type AC / Type A devices are not permitted
- Installations coordinated to the earth system per IΔn ≤ 50/R
Download CHINT NL210 catalogue (PDF)
CHINT NL210 Type B RCCB series
