Thermal overload relay RE17D-4.0 004641406

Thermal overload relay RE17D-4.0 – reliable circuit protection

The thermal overload relay RE17D-4.0 is a protective device designed to protect electric motors and other equipment from overload. Its function is to disconnect the power supply when excessive current is detected, preventing damage and extending the life of the protected devices. This solution is proven both in industrial installations and in domestic applications where high reliability and precision are required.

Construction and application

This relay is characterized by a flat plug-in connection, which facilitates installation and replacement. The current setting range from 2.8 to 4 A allows adaptation to various loads. It has both a normally open and a normally closed auxiliary contact – one of each type – which increases its functionality and enables integration with control systems. Direct mounting simplifies installation, and tripping class 10 ensures a quick response to overloads.

• Motor protection: Ideal for protecting electric motors from the effects of overloads, such as winding overheating.
• Application in controllers: Can be used in control systems to signal load status or to automatically switch off devices.
• Industrial installations: Works well in industrial applications requiring reliable overload protection.
• Construction: Excellent for protecting electrical equipment in residential and commercial buildings.

Key features and benefits

The RE17D-4.0 relay is not only a protective element but also a convenient solution for installers and end-users:

• Precise adjustment: The current setting range of 2.8…4 A allows for accurate matching to the load characteristics. This avoids unnecessary device shutdown during short-term current surges while ensuring effective protection against overloads.
• Versatility: Two auxiliary contacts (normally open and normally closed) allow integration with various control and signaling systems.
• Easy installation: Direct mounting and flat plug-in connection significantly speed up the installation and servicing process.
• Reliability: Tripping class 10 guarantees a quick response to overloads, minimizing the risk of damage to protected devices.
• Compact size: Allows mounting in limited space without compromising functionality.