Double-throw switches are available in 30-600 amps, 600 Vac, 250 Vdc maximum in fusible and non-fusible construction, and in NEMA Type 1 (indoor) and Type 3R (outdoor) enclosures. GE’s double-throw safety switches are UL Listed as service entrance equipment when installed in accordance with the National Electrical Code. All GE double-throw safety switches are UL Listed (UL98 Enclosed Switches) and meet NEMA Enclosed Safety Switch Standard KS1-2001 for type HD 30-200 amps and type GD 400-600 amps