Circuit breaker Kanlux 1P B 40A AC model 23174 — single-pole overcurrent protection 40 A

Kanlux 23174 is a single-pole overcurrent circuit breaker with a B tripping characteristic, rated for 40 A in AC systems. It is designed to interrupt fault currents caused by overloads and short circuits, offering basic protection for branch circuits in residential and light commercial distribution boards. The compact form factor fits standard DIN-rail enclosures and is intended for protecting lighting circuits, socket circuits with small appliances, and other low-inrush loads.

Advantages

The single-pole B 40A breaker provides predictable tripping behavior for protection of circuits with low to moderate inrush currents. Its B characteristic ensures fast response to short-circuit conditions while allowing normal starting currents for typical household appliances. The device is compact for space-efficient installation on standard 35 mm DIN rails and is compatible with common distribution board layouts. It offers reliable thermal-magnetic operation without the need for complex configuration, making it suitable for straightforward circuit protection tasks.

Suitable for

• Protection of lighting circuits in homes and apartments
• Protection of socket outlets serving small household appliances
• Branch circuit protection in small commercial or office installations
• Use in standard DIN-rail distribution boards and panels

Key specifications

• Poles: single-pole (1P)
• Rated current: 40 A
• Tripping characteristic: B (fast tripping for low inrush loads)
• Applicable system: AC supply
• Mounting: 35 mm DIN-rail compatible
• Function: thermal-magnetic overcurrent protection (overload and short-circuit)

How to use

Install the breaker on a standard 35 mm DIN-rail inside a distribution board following local electrical codes and safety standards. Connect the supply conductor to the line terminal and the protected load conductor to the load terminal, ensuring tight and secure terminations. Verify correct polarity and phase before energizing the circuit. After installation, switch the breaker on to supply the protected circuit. If the breaker trips, isolate the downstream circuit, identify and correct the fault (overload or short circuit), and reset the breaker only after the issue has been resolved.

Usage recommendations

Use this single-pole 40 A breaker on circuits with expected continuous current below the rated value and where inrush currents are within the limits of a B-characteristic device. Coordinate protection with upstream and downstream devices to ensure selective tripping and avoid nuisance trips. Ensure compliance with local wiring regulations and consider additional protection or RCDs where required for personnel safety and ground-fault protection.