Siemens SIRIUS 3RU2 Thermal Overload Relay 1 NO/1 NC, 20A Adjustable Current Range, 25A Contact Rating, 11 kW 3P 3RU2126-4DB0

Siemens 3RU2126-4DB0 SIRIUS 3RU2 Thermal Overload Relay is engineered for reliable and efficient motor protection in industrial and automation systems. This relay is designed with 1 Normally Open (NO) and 1 Normally Closed (NC) contact configuration, supporting a current rating adjustable between 20 and 25 amperes, suitable for motors up to 11 kW in three-phase applications.

The device features both manual and automatic reset options allowing flexibility in operation according to application needs. Its compact size (85mm length, 85mm depth, 45mm width) allows easy installation in control panels with limited space.

Rated for operation within temperatures from -40°C to +70°C, it is capable of maintaining performance in harsh environments. The relay’s high contact voltage rating up to 690V AC makes it ideal for high-voltage motor circuits. An IP55 and IP65 protective rating offers strong defense against dust and water, ensuring durability and longevity.

Designed to mount directly onto contactors, this relay facilitates convenient integration and reduces wiring complexity in motor control circuits. Its 3-pole configuration supports typical three-phase motor protection requirements. Additionally, the product includes two auxiliary contacts for extended motor control and signaling functionalities.

The Siemens 3RU2126-4DB0 complies with various international safety and quality standards such as UL, CE, IEC, EAC, and RoHS, making it suitable for global industrial use. It finds applications in motor protection across manufacturing plants, automation systems, HVAC installations, and assembly lines needing robust overload relay solutions.

Equipped with both automatic and manual reset methods for versatile operation. Compact design with dimensions 85mm x 85mm x 45mm for efficient space utilization. Error protection for motors within -40°C to 70°C operating temperature range.

High contact voltage rating of 690V AC suitable for demanding industrial environments. IP55 and IP65 rated enclosure providing strong protection against dust and water ingress. Direct mounting capability for seamless integration with contactors.

Supports three-pole (3P) configuration suitable for typical motor protection circuits. Includes two auxiliary contacts for enhanced monitoring and control. Complies with international standards including UL, CE, IEC, and RoHS ensuring quality and safety.

This Thermal Overload Relay from Siemens provides reliable motor protection by detecting overload conditions and de-energizing motors to prevent damage and downtime. It is suitable for industries requiring secure and efficient motor control such as manufacturing, industrial automation, HVAC, and robotics. Choose the Siemens SIRIUS 3RU2 relay for dependable overload protection in compact format with certified quality and broad application suitability.