Transfer Switches & ATS
43 generators available. $0 sales tax. Free freight on orders $499+.
Showing 1–24 of 43 products matching your filters
Showing 1–24 of 43 products matching your filters
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43 products in this category
Automatic and manual transfer switches for residential, commercial, and industrial generator installations. GeneratorProDirect stocks Generac, Kohler, and Cummins transfer switches from 100A to 1,200A — all tax-free in 45+ states, free freight over $499.
43 generators available. $0 sales tax. Free freight on orders $499+.
Showing 1–24 of 43 products matching your filters
Showing 1–24 of 43 products matching your filters
Transfer switch installation must comply with NEC Article 702 or Article 700. Service entrance rated transfer switches must be listed for use as the first disconnect after the utility meter. All transfer switch installations require an electrical permit and must be performed by a licensed electrician. Improper installation creates back-feed hazards to utility workers and voids manufacturer warranty.
1. Amperage must match your main panel
Your transfer switch amperage must equal or exceed your main breaker rating. 200A panel = 200A ATS minimum. Undersizing is a code violation.
2. Automatic vs manual
Automatic transfer switches (ATS) detect outage, start the generator, and transfer load without human intervention — within 10-30 seconds. Manual switches require someone to operate them. For standby generators, ATS is standard.
3. Open vs closed transition
Open transition (break-before-make): brief interruption during transfer — standard for most applications. Closed transition (make-before-break): zero interruption — required for hospitals, data centers, and applications where any interruption is unacceptable.
4. Service entrance rated (SER)
Service entrance rated switches can be installed as the first disconnect after the meter. Required in most residential and small commercial installations.
Pro tip: Always buy the transfer switch and generator together from the same brand. Generac generators with Generac ATS, Kohler with Kohler — they are designed to communicate with each other for exercise scheduling, load management, and remote monitoring. Cross-brand combinations work but lose smart features.
GeneratorProDirect does not collect sales tax in most US states. On a $5,000 generator, a Texas buyer saves $312. California saves $363.
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