George Risk Industries 4402 Aluminum Wide-Gap SPDT Switch Set

Monitor protected industrial doors, gates, cabinets, and similar openings with a magnetic contact intended for wider switch-to-magnet spacing. The aluminum construction suits security locations where the contact assembly may be exposed to routine facility use. SPDT switching gives the alarm circuit a changeover contact arrangement rather than a single fixed contact state. In a monitored-opening installation, the sensing and actuator elements are positioned across the moving joint so a change in their relationship signals an opening condition to the connected control panel. Wide-gap contacts are used when the moving and fixed surfaces cannot be brought as close together as a standard close-coupled sensor installation. That makes this switch-set format relevant to heavier doors, gates, and uneven frames, provided the installed separation is within the device's rated operating range. The SPDT contact can be wired to suit the required alarm-input logic, allowing the installer to select the appropriate contact state for the connected circuit. George Risk Industries 4402 combines industrial wide-gap operation, SPDT switching, and an aluminum enclosure in one contact set. Those characteristics distinguish it from simpler fixed-contact or close-gap sensor arrangements when an opening requires more mechanical tolerance. Select it for a security circuit that needs a wide-gap magnetic switch, and verify electrical ratings, switching distance, cable routing, and mounting geometry against site requirements before installation.