The 1223B is a Hubbell-PRO heavy-duty industrial three-way toggle switch designed for back and side wiring. It is rated for 20A and 120-277V AC and features a corrosion-resistant, zinc-plated steel bridge and silver alloy contacts for durability. The switch can withstand a dielectric voltage of 1500V AC and accommodates #14 to #10 AWG copper wire. Suitable for demanding industrial environments, this UL Listed and CSA Certified switch operates reliably in temperatures ranging from -40°C to 75°C.