Gülboy imports and sells French Entrelec rail mounted terminal blocks and PLC interface modules, Socomec load-break switches and network analyzers and German Schiele timer and monitoring relays.

Entrelec manufactures terminal blocks which are generally used in industry and electrical switch boards, PLC interface modules, converters and rotary switches.

Socomec has an extensive range of load-break switches. Some of these are fuse switches, transfer switches, and switches with emission coil. Its new range of products are network analyzers and energy counters.

Entrelec-Schiele manufactures standart and multifunction timers, current and voltage monitoring relays as well as Systron series bus modules (Profibus DP, Interbus-S, Modbus, CANopen, DeviceNet) and safety relays.