Siemens SIRIUS 3RU2 Thermal Overload Relay, 1.8 to 2.5 A Adjustable Current Range, 2.5 A Contact Rating, 750 W 3RU2116-1CB0

Siemens 3RU2116-1CB0 Thermal Overload Relay from the SIRIUS 3RU2 series is engineered for precise motor protection in various industrial, automation, and electrical applications. Its adjustable current range from 1.8 to 2.5 A and a power rating of 750 W enable it to efficiently protect motors from overheating and overcurrent conditions.

This thermal overload relay features a sturdy 3-pole (3P) setup and integrates one normally open (NO) and one normally closed (NC) contact for dependable control and safety. The relay supports both automatic and manual reset methods, allowing tailored operational flexibility according to application needs.

Secure electrical connections are ensured via screw terminals, and the device is designed for direct mounting, facilitating easy installation in motor control circuits. The relay is IP65 and IP55 rated, providing protection against dust and water ingress, making it suitable for demanding industrial environments.

The inclusion of two auxiliary contacts enhances functionality by enabling operational status monitoring which is critical for maintenance and system diagnostics. Built to operate over a temperature range of -40°C to 70°C, the relay maintains reliable performance under diverse climatic conditions.

Compliant with multiple international standards including WEEE, RoHS, CCC, CE, IEC, UKCA, UL, REACH, and EAC, this model reflects Siemens' commitment to quality and global regulatory adherence. Manufactured in Germany, it offers assured robustness and longevity for industrial motor protection.

Features a 3-pole configuration for versatile motor protection applications. Includes 1 normally open and 1 normally closed contact for reliable control. Supports both automatic and manual reset methods for operational flexibility.

Equipped with screw terminals ensuring secure electrical connections. Suitable for motors with full load current ratings between 1.8 and 2.5 A. Has an IP65 and IP55 rating making it suitable for harsh operating environments.

Includes two auxiliary contacts for enhanced monitoring capabilities. Operates reliably across a wide temperature range from -40°C to 70°C. Designed and manufactured in Germany, meeting multiple international standards and approvals.

This thermal overload relay is ideal for industrial machinery, HVAC systems, and conveyor protection where motor safety and fault prevention are critical. It seamlessly integrates with direct contactors for enhanced system reliability and operational safety.

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