The Siemens 3RU1136-1JB0 is a thermal overload relay designed to provide efficient protection for motors in the event of overload or phase failure. This relay is part of the SIRIUS product family, renowned for its reliability and versatility in various industrial applications. With an adjustable response current range of 7 to 10 A, it ensures precise protection for motors according to the actual load conditions.
Crafted for direct mounting onto contactors, the 3RU1136-1JB0 features a compact size S2 footprint, making it an ideal choice for space-constrained environments. The relay is equipped with one normally open (NO) and one normally closed (NC) contact, offering flexibility for integration into control circuits.
The device operates within an ambient temperature range of -20 to +70°C, ensuring consistent performance even in demanding conditions. It is also designed to withstand impulse voltages up to 6 kV and is rated for insulation voltages up to 690V, with a degree of pollution 3, which makes it suitable for a wide range of industrial applications.
The 3RU1136-1JB0 is engineered with user safety in mind, featuring finger-safe terminals and a protection class of IP20 on the front, safeguarding users during installation and maintenance. Its robust construction is designed to resist shocks up to 8g/10 ms, and it can be installed at altitudes up to 2000 meters above sea level without derating.
This overload relay is a Class 10 device, meaning it will trip within 10 seconds at 600% of the rated current, providing rapid response to prevent motor damage. The screw-type terminals allow for secure and reliable connections, accommodating a range of conductor sizes for both the main and auxiliary circuits.
The Siemens 3RU1136-1JB0 is a testament to Siemens' commitment to quality and innovation, offering a dependable solution for motor protection that is both effective and easy to integrate into various industrial control systems.