Products 1 - 24 Huge selection of 30 Amp Manual Transfer Switches. Reliance Controls 30-Amp (120V 1-Circuit) Outdoor Transfer Switch (Scratch & Dent). Reliance Controls ProTran 2 Series 306A1 Manual Transfer Switch safely Rugged powder-coated steel cabinet with six combination 1/2-inch and 3/4-inch Generac's HomeLink™ Upgradeable Transfer Switch goes beyond what other manual transfer switches can do. It makes upgrading from a portable generator to Reliance Controls 30-Amp (120/240V 1-Circuit) Outdoor Transfer Switch Reliance Controls Pro/Tran 2 - 15-Amp (120V 4-Circuit) Indoor Transfer Switch.#1 New Releasein Outdoor Generator Transfer Switches . EZ GENERATOR SWITCH - Generator Manual Transfer Switch UNIVERSAL UL/CSA approved.