ABB JSHD4-2 Safety Switch

ABB JSHD4-2 is a three-position safety enabling switch in the ABB Jokab Safety JSHD4 family, engineered for high-integrity safety applications with Category 4 / PLe performance. The unit is composed of a top interface with LEDs and front/top pushbuttons and a bottom housing featuring a cable gland and a PCB with 10 screw terminals for safe, reliable wiring. Available variants include JSHD4-2-AB, JSHD4-2-AD, JSHD4-2-AH, JSHD4-2-AJ and JSHD4-2-AK, representing different enabling-switch configurations. In ABB's safety product literature, the JSHD4-2 is described as the top part of a three-position device, configurable to suit various machine-safety layouts.