MICRO SWITCH GLA Series Global Limit Switches, Side Rotary With Roller - Standard, 1NC 1NO SPDT Snap Action, 0.5 in - 14NPT conduit. Honeywell’s MICRO SWITCH GLA Limit Switch Series is designed to global EN50041 standards and well suited for worldwide applications. The modular design (heads/actuators, bodies, and contact blocks) of the limit switch allows for rapid response to meet customer applications. The rugged die-cast metal housing of the switch is ideal for indoor and outdoor applications where a degree of IP or NEMA enclosure sealing is required. Normally closed snap-action contacts and normally closed slow-action contacts are positive opening.