An exterior electrical disconnect switch cuts all power to a prefabricated commercial structure from a single point outside the unit. Guardian Commercial installs disconnect switches during manufacturing, so your new unit arrives with a compliant, weatherproof shut-off point already in place.
An accessible, lockable power shut-off is required by code on active commercial sites. The National Electrical Code (NEC) and OSHA’s lockout-tagout (LOTO) standard both mandate shut-off points on structures where workers interact with live electrical systems. A properly installed exterior disconnect switch satisfies these requirements and keeps every structure in your program compliant from day one.
An electrical disconnect switch offers many advantages beyond code compliance. When an emergency requires a rapid shut-off, exterior access allows personnel to cut power without entering the structure. First responders can locate and operate a clearly labeled disconnect point without delay or additional site guidance. Exterior access also simplifies scheduled maintenance — electrical, HVAC, and other crews can lock out power from outside without disrupting personnel inside the unit.
The primary benefits of having an exterior electrical disconnect switch preinstalled on your new unit include:
Guardian Commercial installs NEMA 3R and 4X-rated disconnect switches for weatherproof performance in rain, wind, and UV exposure. Enclosures are available in stainless steel or powder-coated steel. Every switch is clearly labeled for first-responder identification and tested before your structure ships.
Standard configurations start at 30-amp service, with upgrade options based on your structure’s electrical load requirements. Fused and non-fused versions are both available. Switches mount on any exterior wall and include an easy conduit entry point, with padlockable and interlocked handle options to meet LOTO requirements.
All installations comply with NEC clearance requirements. We confirm switch placement and electrical configurations with your team before production on your structure begins.
Guardian Commercial works with general contractors, developers, and facility managers on programs ranging from single-structure installs to campus-scale deployments. When you partner with us, you’ll enjoy benefits like:
