Why Choose the Chint NB310L-3N-B32 RCBO?
The Chint NB310L-3N-B32 is a reliable 3P+N RCBO (Residual Current Circuit Breaker with Overcurrent Protection) designed to provide combined protection against earth leakage, overloads and short circuits in three-phase electrical installations. By integrating residual current protection and overcurrent protection into one compact device, it helps simplify distribution board design while improving electrical safety.
As part of the Chint NB310L Series, this RCBO is suitable for commercial, industrial and residential low-voltage distribution systems. It features a 32A rated current, B Curve trip characteristic and Type A residual current protection, making it suitable for circuits where both AC and pulsating DC residual currents may occur.
With a 30mA residual operating current, 230/400V AC rated voltage and 6kA short circuit breaking capacity, the NB310L-3N-B32 delivers dependable circuit protection for modern electrical installations, control panels, machinery supplies and three-phase distribution boards.
Key Advantages
- Combined RCBO protection against earth leakage, overload and short circuit faults.
- 32A rated current for three-phase electrical distribution circuits.
- B Curve trip characteristic for general loads and resistive circuits.
- Type A residual current detection for AC and pulsating DC leakage currents.
- 30mA sensitivity provides additional protection against electric shock.
- Compact 3P+N DIN rail mounted design for distribution boards and control panels.
Key Features
- Chint NB310L Series RCBO.
- 32A rated current.
- 3P+N pole configuration.
- B Curve magnetic trip characteristic.
- Type A residual current protection.
- 30mA rated residual operating current.
- 6kA short circuit breaking capacity.
- DIN rail mounting for fast installation.
Reliable Three Phase Circuit Protection
The Chint NB310L-3N-B32 helps protect personnel, cables and connected equipment by disconnecting the circuit when leakage current, overload or short circuit faults are detected. This makes it a practical choice for electrical installers and panel builders requiring compact, reliable protection in three-phase systems.
Its Type A residual current protection is well suited to modern installations containing electronic loads, drives, power supplies and control equipment, where pulsating DC residual currents may be present in addition to standard AC leakage currents.
Typical Applications
- Commercial distribution boards.
- Industrial three-phase electrical systems.
- Machinery and equipment supply circuits.
- Control panels and automation systems.
- Building services and infrastructure installations.
- Low-voltage power distribution requiring combined RCBO protection.
