Miniature circuit breaker 1P B 4A 6kA AC Kanlux KMB6-B4/1 (MPN 23179)

Miniature circuit breaker 1P B 4A 6kA AC Kanlux KMB6-B4/1 is a single-pole protective device designed for installation in residential and light commercial distribution boards. The device uses a B-curve characteristic and a nominal current rating of 4 A to provide thermal-magnetic protection against overloads and short circuits in AC circuits. The compact housing is intended for DIN-rail mounting and meets applicable safety and performance expectations for modular circuit breakers.

Advantages

The breaker combines a B curve tripping characteristic with a 4 A nominal rating to ensure timely disconnection of low-inrush circuits and reliable protection of lighting and socket circuits. A rated breaking capacity of 6 kA supports safe interruption of fault currents typical for small distribution systems. The compact single-pole design saves space in the distribution board and enables straightforward integration with standard DIN-rail accessories and wiring practices.

Suitable for

• Protection of lighting circuits in homes and apartments
• Overcurrent protection for socket outlets and small appliances
• Use in small commercial electrical panels and service cupboards
• Applications requiring DIN-rail modular components and compact breakers

Key specifications

• Poles: single-pole (1P)
• Tripping characteristic: B-curve (suitable for resistive loads and limited inrush)
• Nominal current: 4 A
• Rated breaking capacity: 6 kA (AC)
• Mounting: standard DIN-rail modular housing
• Operation type: thermal-magnetic trip (overload and short-circuit protection)
• Application: alternating current (AC) circuits

How to use

Install the miniature circuit breaker on a standard 35 mm DIN-rail inside the distribution board following local wiring regulations and safety standards. Connect the phase conductor to the breaker input terminal and the load conductor to the output terminal, ensuring secure screw connections and proper conductor cross-section for a 4 A circuit. Verify polarity and tighten terminals to the manufacturer's recommended torque. After installation, test the circuit under no-load conditions and verify correct operation by switching the device on and off. For fault conditions, the thermal-magnetic mechanism will trip automatically; reset the breaker manually after the fault is cleared.

Usage recommendations

Use this 1P B 4A breaker in circuits where low nominal current protection is required, such as lighting runs or dedicated small-appliance lines. Avoid applying it to motors or high-inrush devices that require C- or D-curve characteristics. Ensure coordination with upstream protection and compliance with local electrical codes; if in doubt, consult a qualified electrician for selection and installation.