Protect commercial and industrial facilities with PanelGuard™ from Intermatic®. Commercial/industrial grade surge protection for your facility's service entrance or load side. Intermatic® PanelGuard™ Surge Protective Devices are designed to react quickly and eliminate surges providing optimal protection to downstream equipment. PanelGuard™ industrial/commercial grade series are parallel connected Surge Protective Devices designed to protect all types of loads fed from individual disconnects, sub-panels, distribution panels and service entrance locations.