Overcurrent circuit breaker with residual current device 1+N-pole PKNM-20/1N/C/003-MW 236245

Overcurrent circuit breaker with differential module PKNM-20/1N/C/003-MW is a reliable Eaton device designed for comprehensive protection of electrical installations. It combines the functions of an overcurrent circuit breaker and a residual current device (RCD), providing effective protection against the effects of short circuits, overloads, and electric shock. This is an ideal solution for both professional installers and end-users looking for safety and comfort.

Protection and Application

The device is designed to protect electrical circuits in residential and commercial buildings. Its main task is to quickly disconnect the circuit in the event of a detected irregularity, such as a current flow exceeding the permissible limit or a short circuit. Additionally, the differential module provides protection against electric shock by reacting to the difference between the incoming and outgoing current from the circuit. This minimizes the risk of damage to equipment and potential hazards to health and life. Characteristic C allows for trouble-free starting of devices with motors that generate high inrush currents.

Construction and Parameters

The PKNM-20/1N/C/003-MW circuit breaker has 1 protected pole and an additional neutral pole (N), allowing its use in single-phase circuits. Mounting is done on a TH35 rail, and the device width is 2 modules (36mm), providing compact dimensions and easy installation in a distribution board. The rated differential current at 0.03A (30mA) provides high sensitivity in detecting leakage current to ground, and the rated short-circuit breaking capacity Icn of 10kA guarantees effective disconnection of the circuit in the event of a short circuit. The cross-section of the connecting wires can range from 1 to 25 mm², providing great flexibility when selecting the supply wires. The IP20 degree of protection means protection against finger contact, but does not protect against the ingress of water.

• Comprehensive protection: combination of overcurrent and residual current device functions in one device
• Fast reaction: C characteristic ensures quick disconnection of the circuit in case of overload or short circuit
• High sensitivity: rated differential current of 30mA provides effective protection against electric shock
• Compact dimensions: 2 module width makes it easy to install in tight distribution boards
• Versatility: can be used in single-phase installations with a neutral wire
• Safety: energy limitation class 3 minimizes the effects of short circuits
• Durability: impact current resistance of 0.25kA increases the device's lifespan
• Wide range of wires: possibility to connect wires with a cross-section of 1-25mm²

The device meets the requirements of EN 61009-1 and EN 61009 standards, confirming its compliance with European safety standards. The ambient operating temperature is in the range of -25°C to +40°C, allowing it to be used in various environmental conditions. The PKNM-20/1N/C/003-MW circuit breaker is an investment in the safety and reliability of the electrical installation.