Circuit breaker noark NOARK Ex9BN 1P C 20A 6kA AC

The noark NOARK Ex9BN 1P C 20A 6kA AC is a single-pole miniature circuit breaker designed for overcurrent protection in single-phase electrical circuits. With a C characteristic tripping curve and a rated current of 20 A, this device interrupts overloads and short-circuits up to a breaking capacity of 6 kA AC. The compact modular design allows DIN-rail mounting in distribution boards for residential and light-commercial installations, offering standard mains compatibility and straightforward integration into existing electrical panels.

Advantages

The breaker provides reliable short-circuit and overload protection with a C-type characteristic suited for circuits with moderate inrush currents. Its 6 kA breaking capacity meets common protection requirements for domestic and small commercial distribution boards. The compact single-pole format saves space in the consumer unit and simplifies wiring and maintenance. The device is compatible with standard DIN-rail systems and is built to typical safety and operational standards applicable to miniature circuit breakers.

Suitable for

• Single-phase lighting and socket circuits in homes
• Small commercial or office branch circuits
• Distribution boards and consumer units with DIN-rail mounting
• Circuits with moderate motor or transformer inrush currents

Key specifications

• Poles: single-pole (1P)
• Tripping characteristic: C curve
• Rated current: 20 A
• Breaking capacity: 6 kA AC
• Mounting: DIN-rail compatible modular housing
• Application: overload and short-circuit protection in single-phase circuits

How to use

Install the circuit breaker onto a standard 35 mm DIN-rail inside the distribution board according to local electrical codes. Connect the phase conductor to the input terminal and the load conductor to the output terminal, ensuring tight and secure terminals. Use the breaker as the protective device for the intended 20 A circuit; switch the breaker to ON for normal operation and OFF to isolate the circuit during maintenance. Confirm proper coordination with upstream and downstream protection devices before commissioning.

Usage recommendations

Verify that the breaker’s C characteristic and 20 A rating match the expected load profile and inrush behavior of connected equipment. Periodically inspect terminal tightness and the physical condition of the device, and ensure that system earthing and upstream protection comply with applicable standards.