400-Amp 285 Series By ASCO Automatic Transfer Switch (120/240V 3-se)â¢Compatible with Briggs & Stratton 3-se generatorsNEMA 3R Outdoor Rated Enclosureâ¢Approved for indoor or outdoor installationsStandard Installationâ¢Requires a sub-panel for overload protectionTrue Double-Throw w/ Inherent Mechanical Interlockingâ¢Prevents connection of generator and utility source for maximum safetyTerminals For Connection of Neutral and Ground Conductorsâ¢Allows for easier installationConvenient Control Interface w/ Symbols & Visual Indicatorsâ¢Makes it easy to see transfer switch and power source statusBuilt-In Auxiliary For Switch Position Indicationâ¢Provides immediate indication when the switch positions changesAdditional Features:â¢Meets Article 702, NFPA-70 National Electric Code (NEC) Requirementsâ¢Listed to UL 1008 for optional standby systemsPlease See Spec Sheet For Additional Compliance & Safety Standards3-Year Limited Warranty