The Siemens 3RU1146-4EB0 is a robust thermal overload relay designed for motor protection. This component is part of the SIRIUS product family, renowned for its reliability and efficiency in industrial applications. With a size S3 footprint, it is engineered to seamlessly integrate with contactor assemblies, ensuring a compact and efficient motor control solution.
This overload relay offers adjustable current settings ranging from 22 to 32 A, providing flexibility to match a variety of motor specifications and applications. It features a Class 10 trip class, which ensures quick response to prevent motor damage due to overload conditions. The relay is equipped with three poles for the main current circuit and includes both normally open (NO) and normally closed (NC) contacts for auxiliary control functions.
Constructed with screw-type terminals, the 3RU1146-4EB0 ensures a secure and reliable connection for both the main and auxiliary circuits. It is designed to withstand impulse voltages up to 8 kV and operates effectively within a wide temperature range from -20°C to +70°C, making it suitable for challenging industrial environments.
The device is also designed with safety in mind, featuring finger-safe protection and an IP20 rating on the front, which helps to protect users during installation and maintenance. Its compact dimensions, with a height of 120 mm, a width of 70 mm, and a depth of 140 mm, allow for efficient use of space inside control cabinets.
The Siemens 3RU1146-4EB0 thermal overload relay is a dependable choice for motor protection in a variety of industrial settings, offering precise protection and operational reliability.