Generac GEN-AT-100A-220V Automatic Transfer Switch

The Generac GEN-AT-100A-220V Automatic Transfer Switch is a 100 A dual-pole, single-phase ATS that automatically transfers loads between utility and generator power in residential and commercial standby systems. Rated for 220/240 VAC and 50/60 Hz, it supports automatic utility-to-generator switching, enabling seamless load transfer and immediate restoration of critical circuits during outages; it is suitable for whole-house backup power, commercial standby generators, healthcare facilities, agricultural buildings, and industrial installations. Compatible with Generac Guardian, Centurion, Honeywell, Siemens, and Carrier generators and with Siemens BQ, Square D Q2, GE TQ2, and Westinghouse CA-CAH breakers, it supports indoor NEMA 1 or outdoor NEMA 3R enclosures. Designed for residential and commercial standby power systems, it features a 10,000 RMS symmetrical short-circuit rating, wire range #14 to 1/0 AWG (copper or aluminum), conductor tightening torque of 50 in-lbs (5.6 Nm), a solid non-switched neutral, and UL Listed and ETL Listed certifications under UL 1008 and NEC Article 702.