Circuit breaker noark 3P B 16A 6kA AC Ex9BN (NO013)

Circuit breaker noark 3P B 16A 6kA AC Ex9BN is a three-pole miniature circuit breaker designed for protection of AC electrical circuits against overloads and short circuits. The device features a B tripping characteristic and a rated current of 16 A with a breaking capacity of 6 kA. It is intended for mounting on standard DIN-rail and is suitable for use in distribution boards, electrical panels and compact installations in residential, commercial and light industrial environments.

Advantages

The three-pole design provides simultaneous disconnection of all phases to ensure safe isolation of the protected circuit. The B characteristic offers reliable protection for typical lighting, receptacle and general-purpose circuits where inrush currents are limited. A rated breaking capacity of 6 kA meets common installation requirements and contributes to system safety during short-circuit events. DIN-rail form factor simplifies installation and integration into standard distribution enclosures.

Suitable for

• Protection of three-phase lighting circuits in residential and commercial buildings
• Protection of small motors and distribution branches with limited inrush currents
• Use in distribution boards, sub-distribution panels and compact control cabinets

Key specifications

• Poles: 3 (three-pole)
• Tripping characteristic: B
• Rated current: 16 A
• Breaking capacity: 6 kA (AC)
• Mounting: DIN-rail compatible
• Intended system: AC three-phase installations

How to use

Install the miniature circuit breaker on a compatible DIN-rail inside the distribution board, following applicable electrical codes and disconnecting power before work. Connect incoming and outgoing conductors to the corresponding phase terminals ensuring correct tightening torque and secure connections. Verify proper coordination with upstream and downstream protection devices and label the circuit for identification. After installation, switch the breaker on and perform functional checks under no-load conditions before connecting equipment.

Usage recommendations

For reliable operation, ensure wire sizes, terminal torque and upstream protection ratings are matched to the 16 A rated current and 6 kA breaking capacity. Use the breaker in circuits with expected inrush currents within the B characteristic limits. Schedule periodic visual inspections and test switching to confirm mechanical operation and absence of overheating in terminals.