Available. The Phoenix Contact RIF-2-BPT/4X21 is a relay base designed for industrial applications, providing a reliable platform for mounting and connecting industrial relays. It features a push-in connection method, simplifying wiring processes, and offers a plug-in option for input or interference suppression modules, enhancing relay functionality. This relay base is intended for mounting on NS 35/7.5 DIN rails, making it suitable for various industrial automation, control panel, and machine building applications. The RIF-2-BPT/4X21 supports a nominal voltage of 250 V AC/DC and a nominal current of up to 12 A, depending on the specific application and assembly. Its compact dimensions—31 mm in width, 96 mm in height, and 75 mm in depth (with retaining bracket)—allow for efficient use of panel space. The housing is gray (RAL 7042) and has a flammability rating of V2 according to UL 94 standards, ensuring durability and safety in industrial environments. The ambient temperature range for operation is -40 °C to 85 °C, accommodating a wide range of environmental conditions. This relay base is part of the RIFLINE complete product family, known for its modular and versatile relay solutions.