Siemens 3RU2146-4LB1

The thermal overload relay operates within a current range of 70 to 90 A, specifically designed for motor protection with a size classification of S3 and a trip class of 10. It features a stand-alone mounting option, facilitating easy installation in various setups.

Key specifications include an IP20 insulation rating, ensuring protection against solid objects, and a contact configuration of 1 normally open and 1 normally closed. The relay is capable of handling environmental conditions ranging from -40 °C to 70 °C, making it suitable for diverse applications.

With a full load current rating of 77 A and a contact rating of B600 / R300, this unit is equipped with both manual and automatic reset functions. The dimensions of the relay are 0.07 m, 0.12 m, and 0.14 m, allowing for compact integration into control systems. The device originates from Germany, reflecting high-quality manufacturing standards.