Siemens Overload Relay 1 NO/1 NC, 25A Relay Contact Current, 6 to 25A Adjustable Current Range, 11 kW Power 3RB3026-1QB0

Siemens 3RB3026-1QB0 is an advanced overload relay designed to protect three-phase motors in industrial environments. This relay features a current rating adjustable between 6 to 25 amperes and provides a reliable relay contact current of 25 amperes. The device supports a power rating of 11 kW and operates on a supply voltage of 690 V AC, making it suitable for demanding industrial applications.

With a normal state configuration of 1 NO (Normally Open) and 1 NC (Normally Closed), the relay effectively manages motor overloads. The reset method allows for both automatic and manual operation, improving flexibility and minimizing downtime.

Its compact design with dimensions of approximately 69.7mm length, 45mm width, and 83.5mm depth enables straightforward mounting on contactors. Screw terminal connections ensure secure and easy wiring during installation.

The relay is rated IP20 for protection against solid foreign objects. It operates reliably across a wide temperature range from -25°C to +60°C, suitable for harsh industrial environments. Featuring 2 auxiliary contacts and a 3-pole configuration, it offers comprehensive control capabilities.

This overload relay complies with important international standards including CE, UL, CSA, CCC, and various IEC standards related to electrical and mechanical endurance and safety, ensuring quality and reliability.

Industrial applications include safeguarding motors in manufacturing lines, heavy machinery, HVAC systems, and automation setups requiring precise motor protection to avoid downtime and equipment damage. The device facilitates direct mounting on contactors simplifying integration.

This overload relay supports 1 NO/1 NC configurations to meet diverse control requirements. Rated for motor full load current ranging from 6 to 25 amperes to cover a broad motor size range. Equipped with dual reset methods: automatic for quick recovery and manual for controlled reset.

Designed to withstand operating conditions from -25°C up to +60°C. Includes standard screw terminals for reliable electrical connections. Compact dimensions support space-saving panel designs in industrial control systems.

Certified to multiple global safety and performance standards for industrial reliability. Application suitability includes motor protection in automated industrial systems and heavy-duty manufacturing equipment. Explore more products in the Overload Relay category and Siemens automation solutions with EnvMart for enhanced industrial productivity and system protection.