Siemens SIRIUS 3RU2 Thermal Overload Relay 1 NO/1 NC, Adjustable Current 11 to 16 A, 16A Contact Rating, 7.5 kW 3RU2116-4AC0

Siemens 3RU2116-4AC0 is a SIRIUS 3RU2 series thermal overload relay engineered for precise current-sensitive protection of motors in industrial, manufacturing, and automation applications. It provides reliable protection for motors with a rated full load current between 11 and 16 amperes and supports motors with power ratings up to 7.5 kW.

The relay features a direct mount type with a compact form factor measuring 87 mm in length, 73 mm depth, and 45 mm width. It includes one normally open (NO) and one normally closed (NC) auxiliary contact, supporting critical control circuit functions. The terminal connections are cage clamp types, facilitating secure wiring with high current capacity.

This model supports both automatic and manual reset methods, giving flexibility in motor protection cycles. The relay withstands harsh environments with an operating temperature range from -40°C to +70°C and conforms to an IP20 ingress protection rating for standard industrial enclosure protection.

Designed with safety and durability in mind, it includes a switch position indicator, test function, and a STOP button to quickly interrupt operation if needed. It offers impulse voltage resistance of up to 6 kV and insulation voltage rated at 690 V AC, suitable for demanding industrial electrical environments.

Certified by multiple international standards including IEC 60068-2-27, IEC 60529, IEC 81346-2, IEC 61508, UL, CSA, CE, CCC, and EAC, this product meets strict global quality and safety requirements. It is manufactured in Germany, ensuring high manufacturing standards and reliability.

Compatible with Siemens Sirius Size S0 and S00 contactors, this thermal overload relay is an essential component in automation systems, HVAC controls, manufacturing lines, water treatment facilities, and general industrial setups requiring motor overload protection.

This thermal overload relay features 1 normally open (NO) and 1 normally closed (NC) auxiliary contact. It has a 16A relay contact current suitable for protecting motors up to 7.5 kW. The device supports direct mounting and includes a reset method with both manual and automatic options.

Incorporates a cage clamp terminal type ensuring secure electrical connections. Built for harsh environments with an operating temperature range of -40°C to 70°C and IP20 protection rating. Dimensions of 87 mm length, 73 mm depth, and 45 mm width provide compact installation.

Includes standard certifications like IEC, UL, CSA, CE, and CCC making it suitable for industrial use. Equipped with a switch position indicator, test function, and STOP button for enhanced operations. Impulse voltage resistance up to 6 kV ensures durability in demanding electrical conditions.

Compatible with Sirius Size S0 and S00 contactors for effective motor overload protection.

Explore EnvMart's extensive range of Thermal Overload Relays and automation control gear to find components designed for robust industrial, laboratory, and commercial applications.