General
Degree of protection	IP20
Rated operating voltage	690 V
Number of poles	3 way
Construction size	PKM0
Short-circuit release	Undelayed
Mounting method	screw and snap mounting
Terminal technology	Screw terminals
Cap mounting dimension	45 mm
Finger protection	according to VDE 0106 T. 100
Norm	IEC/EN60947

The PKM0-10 motor protection switch from Eaton is a 3-pole switch of size PKM0, designed for use in industrial plants for motor protection and control tasks. It complies with IEC/EN60947 standards and is equipped with an instantaneous short-circuit tripping device to react immediately to sudden overloads or short circuits. Mounting is possible via screw or snap-in method, with screw terminals ensuring a secure and durable connection. The cap mounting dimension is 45 mm, making it suitable for standard control panels and distribution boxes. The rated operational voltage Ue is 690 V, making the switch suitable for applications in medium voltage ranges in industrial environments. The protection class IP20 ensures protection against finger contact and solid foreign objects, with compliance with VDE 0106 T. 100 confirming finger safety.

Applications

The PKM0-10 is used in industrial plants where motor protection and control are required. It is particularly suitable for drives in production plants, conveyor systems, pump and fan installations, as well as other machinery driven by electric motors. The protection class IP20 makes it suitable for indoor installations where no special environmental conditions such as moisture, dust, or splashing water are present. The combination of short-circuit and motor protection ensures reliable safeguarding of the installation.

Functions and Equipment in Detail

The switch features an instantaneous short-circuit tripping device that immediately disconnects the circuit in case of sudden current surges, preventing damage to the installation or motor. The screw terminals allow for a secure and mechanically stable connection of the conductors. The snap-in mounting enables quick and easy installation without additional tools. The mounting dimensions of 45 mm fit standard control panels and allow modular integration into existing switchgear. Finger safety according to VDE 0106 T. 100 ensures safe operation and prevents accidental contact with conductive parts.

Technology Explained Simply

The PKM0-10 motor protection switch operates on the principle of thermal and magnetic protection. The instantaneous short-circuit tripping device responds to high current levels caused by short circuits and disconnects the circuit within milliseconds. The screw terminals ensure a mechanically stable and electrically conductive connection that remains secure even under vibration and mechanical stress. The protection class IP20 protects against finger contact and solid foreign objects, increasing safety during maintenance and servicing. The rated operational voltage of 690 V makes the switch suitable for applications in industrial networks exceeding 400 V.

Compatibility and Accessories

Various accessories are available for the PKM0-10 motor protection switch, extending its functionality. These include auxiliary switches for additional control and signaling tasks, as well as voltage release devices that automatically disconnect the switch in case of undervoltage or power failure. Insulated housings are also available to integrate the switch into a closed enclosure, along with adapters for DIN rail mounting and busbars. The combination with telescopic adapters or door coupling handles allows application-specific adaptation of the operating mechanism. The use of switch modules and clip plates supports modular expansion of the switchgear.

Mounting and Installation

The PKM0-10 is mounted either by screw mounting on a control panel or by snap-in mounting into a suitable enclosure module. The screw terminals allow for a secure connection of the conductors, which must be tightened according to standard specifications. The mounting dimensions of 45 mm fit standard control panels and DIN rails. During installation, correct polarity and compliance with electrical safety regulations must be observed. Finger safety according to VDE 0106 T. 100 simplifies maintenance, as no additional protective measures are required.

Advantages in Operation

The PKM0-10 offers reliable motor protection with fast response to short circuits. The combination of screw and snap-in mounting allows flexible installation, with screw terminals ensuring a durable connection. The protection class IP20 and finger safety increase safety during operation and maintenance. Compatibility with various accessories allows individual adaptation to specific requirements of the installation. Compliance with the IEC/EN60947 standard ensures quality and reliability of the device in industrial applications.