Miniature circuit breaker noark Ex9BN 3P C32, 3-pole, C curve, 32 A

Miniature circuit breaker noark Ex9BN 3P C32 is a three-pole protective device designed for overcurrent and short-circuit protection in three-phase electrical installations. The breaker has a C-type tripping characteristic and a rated current of 32 A, making it suitable for general-purpose protection of circuits feeding lighting, socket circuits, and small motors in residential, commercial and light industrial distribution boards. Constructed for DIN-rail mounting, it provides coordinated protection where simultaneous disconnection of all three poles is required.

Advantages

The noark Ex9BN 3P C32 offers selective C-curve tripping that balances sensitivity to moderate inrush currents while providing reliable protection against overloads and short circuits. Its three-pole design ensures all phases are switched simultaneously to avoid phase imbalance and reduce risk during maintenance. The compact form factor and standardized mounting simplify installation in distribution panels, and the device complies with common performance requirements for miniature circuit breakers used in building wiring and light industrial applications.

Suitable for

• Three-phase distribution boards in homes and apartments
• Commercial premises such as shops and offices
• Light industrial environments and workshops
• Protection of lighting circuits, socket outlets and small motors

Key specifications

• Number of poles: 3 (three-pole)
• Tripping curve: C-type (moderate inrush tolerance)
• Rated current: 32 A
• Function: Overload and short-circuit protection
• Mounting: DIN-rail compatible compact housing

How to use

Install the noark Ex9BN 3P C32 on a standard DIN rail inside the distribution board, observing correct phase order and ensuring neutral and earth conductors are connected according to local wiring regulations. Tighten terminal connections to the manufacturer's recommended torque and confirm the rated current and tripping characteristic suit the protected circuit. After installation, test the breaker by switching it on and off and, if available, perform a functional trip test following electrical safety procedures before energizing the downstream circuit.

Usage recommendations

Use this breaker in circuits where moderate inrush currents occur, such as lighting groups and small motor loads, and ensure coordination with upstream and downstream protective devices for fault discrimination. Replace damaged or tripped units with identical type and rating to maintain protection integrity; follow applicable national wiring standards and, when in doubt, consult a qualified electrician.