Switching 4 mm Banana Socket

CLIFF Electronics introduces their switching 4 mm banana sockets, engineered for high-voltage use and laboratory-grade robustness. Inside the device are two fixed, insulated internal contacts. When a 4 mm banana plug is inserted, it bridges the two contacts, creating the electrical connection. There is no internal mechanical switching mechanism; the switching occurs solely through the physical insertion of the plug, enabling straightforward circuit routing, signal enabling, load switching, or safety interlock functions without additional switches or electromechanical parts. This simplified approach reduces component count, eases system design, and supports long-term reliability in demanding technical environments.

To support equipment coding, safety compliance, and multi-channel instrumentation, the FCR7370 is available in four standard colors — red, black, green, and blue — providing clear channel identification and high-visibility marking on dense panels or PCBs.

Engineered for high-voltage use and laboratory-grade robustness, the socket is rated for 1 kV (CAT III) and 10 A. Gold-plated contacts ensure low resistance and long service life, while the fully shrouded design enhances operator protection. The right-angle PCB-mount format enables compact integration into instruments, test rigs, power-electronics assemblies, and modular laboratory systems.