NOARK Ex9BN 1P B25 Miniature Circuit Breaker 25A 6kA

Electrical circuits are constantly at risk from overloads and short circuits, which can damage wiring, equipment, and even cause fires. The NOARK Ex9BN 1P B25 Miniature Circuit Breaker provides dependable protection in a compact, DIN-rail mountable unit. With a rated current of 25 A and a B tripping curve, it is ideal for residential and commercial circuits with moderate inrush currents, such as lighting and socket outlets. Its 6 kA breaking capacity ensures safe interruption of fault currents, keeping your installation secure.

Who is it for

This MCB is perfect for electricians, panel builders, and DIY enthusiasts who need a reliable protection device for single-phase circuits. It is suitable for use in distribution boards, consumer units, and control panels where DIN rail mounting is available.

Main features

• 1-pole (1P) design for single-phase circuits
• Rated current: 25 A
• Tripping curve: B (for resistive and low inrush loads)
• Short-circuit breaking capacity: 6 kA
• Rated voltage: 230 V AC, 50/60 Hz
• DIN rail mounting (EN 60715)
• Screw terminals with capacity 1-25 mm²
• IP20 protection degree
• Complies with EN 60898-1

Specifications

• Series: Ex9BN
• Number of poles: 1
• Rated current (In): 25 A
• Tripping curve: B
• Breaking capacity (Icn): 6 kA
• Rated voltage (Ue): 230 V AC
• Rated frequency: 50/60 Hz
• Mounting: DIN rail (EN 60715)
• Electrical endurance: 10,000 cycles
• Mechanical endurance: 20,000 cycles
• Terminal capacity: 1-25 mm²
• Protection degree: IP20
• Standard: EN 60898-1
• Energy limiting class: 3
• Operating temperature range: -25 to +50 °C
• Connection type: Screw terminals
• Application: Overload and short-circuit protection
• Indicator: ON/OFF position indicator
• Rated impulse withstand voltage (Uimp): 4 kV

Tips

To ensure optimal protection, verify that the circuit's maximum load does not exceed 25 A and that the inrush current is compatible with the B curve. Always install the breaker in a suitable enclosure with IP20 or higher protection, and follow local wiring regulations.