Available. The Siemens 3RT2916-1BB00 is a surge suppressor designed to protect contactors from voltage spikes. It operates within a voltage range of 24-48 V AC at 50/60 Hz and 24-70 V DC, making it suitable for various industrial applications. This varistor is compatible with Siemens SIRIUS contactors, specifically the 3RT2.1 series, and auxiliary contactors like the 3RH2. Its compact size (46 mm x 28 mm x 9 mm) ensures easy integration into existing systems. The device is rated for ambient temperatures between -25°C and +60°C during operation and -40°C to +80°C during storage, providing flexibility in diverse environments. Compliance with RoHS directives since October 1, 2009, underscores its adherence to environmental standards. The 3RT2916-1BB00 is an essential component for enhancing the reliability and longevity of Siemens contactor systems.