Briggs & Stratton Standard SED Transfer Switch, 100A, NEMA 3R

The Briggs & Stratton Standard SED Transfer Switch delivers safe, code-compliant switching between utility and generator power. Rated at 100 A and housed in a rugged NEMA 3R enclosure, it combines a service-entrance disconnect (SED) with a dependable transfer mechanism — streamlining installation and protecting your home or small business during outages.

• 100 A service-entrance rated (SED) transfer switch
• Single-phase 120/240 VAC, 2-pole design
• NEMA 3R outdoor-rated steel enclosure (rain- & corrosion-resistant)
• Separates utility and generator sources to prevent backfeed
• Works with Briggs & Stratton standby generators and most comparable 120/240 V units
• Mechanical interlock and clear labeling enhance safety & maintenance
• UL 1008 listed / CSA certified (meets national electrical codes)

Seamless, automatic protection

When utility power fails, the switch senses the outage and transfers selected loads to generator power — then seamlessly returns to the grid once it’s stable again. Your essential circuits stay online without manual intervention.

Service-entrance convenience in one box

The integrated SED means you get an NEC-compliant main disconnect and transfer switch in a single enclosure. That simplifies wiring, reduces install time, and keeps inspectors happy.

Built to brave the elements

A weatherproof NEMA 3R cabinet allows outdoor mounting right next to your meter or generator. Powder-coated steel and gasketed doors keep moisture and debris out, ensuring long-term reliability.

Installer-friendly layout

Roomy wiring space, pre-drilled knockouts, and clearly marked lugs help electricians finish faster. Neutral and ground bars come pre-installed for a clean, organized hookup.

Electrical Ratings

Amperage: 100 A • Voltage/Phase: 120/240 VAC, 1φ • Poles: 2 • Enclosure: NEMA 3R • Listing: UL 1008

Size

24" × 14" × 6"

Weight

36 lb