Thermal overload relay RE27D-4.0 004642406

Thermal overload relay RE27D-4.0 – reliable circuit protection

The RE27D-4.0 thermal overload relay is a protective device designed to protect electric motors from overload. This device, manufactured by ETI-POLAM, is widely used in industrial and construction installations, ensuring safe and long-lasting operation of equipment. Its compact dimensions and the possibility of direct or independent mounting facilitate integration with existing systems.

Functionality and application

The RE27D-4.0 relay protects electric motors by disconnecting the circuit when the permissible current is exceeded. The current setting range in this model is from 2.8 to 4A, making it suitable for various applications. Trip class 10 provides effective protection against overloads of moderate duration. It has both a normally open (NO) and a normally closed (NC) auxiliary contact, allowing its integration with control systems and alarm signaling.

• Motor protection: Prevents damage caused by overload or short circuit.
• Status signaling: The auxiliary contact allows monitoring of the circuit status and generating alarms in the event of a failure.
• Mounting: Possibility of direct or independent mounting provides installation flexibility.
• Connection: Uses flat plug-in connection, which simplifies and speeds up the installation and servicing process.

Construction and parameters

The RE27D-4.0 thermal overload relay has been designed with durability and reliability in mind. Its construction based on proven materials guarantees resistance to environmental conditions prevailing in typical electrical installations. It has one normally open and one normally closed auxiliary contact, which increases its functionality and integration possibilities with control systems. It is worth paying attention to the current setting range (2.8…4A) – selecting the appropriate relay for the load is crucial to ensure optimal motor protection. Trip class 10 means that the relay reacts to overloads of moderate duration, which minimizes the risk of false tripping caused by short-term current surges during motor start-up.