The UL listed Knox 4500 Remote Electrical Power Shutdown Station that can be used by first responders during an emergency. The shutdown station contains a listed switch housed in a NEMA container which may operate a shunt to disconnect electrical power to the building. The 4500 Series has a NEMA Type 2, 3R (indoor/outdoor) rating. With the new 4500 Station, this shutdown switch is protected against tampering or physical attack from unauthorized individuals.
The device can also be wired to shutdown electrical equipment and systems such as generators, power distribution centers, photovoltaic/solar powered systems, HVAC controls and telecommunications equipment.
All 4500 Series Knox-Vaults are fully tested and listed by Underwriters Laboratories as anti-theft devices. Alarm tamper switches are UL listed as Central Station Alarm Units. UL Electrical Range: Max Voltage of 24 VDC at 50 mA.
UL 437 Standard for Safety for Key Locks (keyway)
UL 508 Industrial Control Equipment (entire unit)