Miniature circuit breaker Noark Ex9BN 1P C16, single-pole 16 A, type C

Noark Ex9BN 1P C16 is a single-pole miniature circuit breaker rated at 16 A with a type C tripping characteristic. It is designed to provide overcurrent protection for lighting circuits and small appliances in residential and light commercial distribution boards. The breaker is compatible with standard DIN-rail mounting and offers compact, reliable protection against overloads and short circuits while maintaining straightforward installation and operation.

Advantages

The single-pole C16 breaker combines a compact form factor with a type C magnetic curve that balances sensitivity to short-circuit events and tolerance for temporary inrush currents from motors or transformers. Its DIN-rail compatibility simplifies integration into existing distribution boards. The device ensures consistent thermal-magnetic response for overload and fault conditions, reducing nuisance trips while providing dependable circuit isolation when necessary.

Suitable for

• Protecting lighting circuits in homes and apartments
• Overcurrent protection for small household appliances and sockets
• Use in light commercial distribution panels and service cupboards
• Retrofit and new installations on standard DIN-rail systems

Key specifications

• Poles: single-pole
• Rated current: 16 A
• Tripping characteristic: type C (standard thermal-magnetic curve)
• Mounting: standard DIN-rail
• Primary function: overload and short-circuit protection
• Suitable conductor types: solid and stranded copper conductors (follow local wiring regulations for conductor size)

How to use

Install the breaker on a standard DIN-rail inside the distribution board following national electrical codes and safety practices. Connect the line (incoming phase) to the breaker’s input terminal and the load conductor to the output terminal, ensuring secure tightening of terminals to the recommended torque. After wiring, switch the device to the ON position to restore the protected circuit. If the breaker trips, first isolate the load and identify the cause—overload, short circuit, or faulty appliance—before attempting to reset.

Usage recommendations

Choose the correct conductor cross-section and torque values according to local regulations and the breaker’s installation guidelines. Use a type C 16 A breaker where moderate inrush currents are expected, such as small motors or lighting circuits with electronic ballasts. Regularly inspect connections for signs of heating or corrosion and test the distribution board after any modification.