Briggs & Stratton Standard SED Transfer Switch, 150A, NEMA 3R

The Briggs & Stratton Standard SED Transfer Switch delivers safe, code-compliant switching between utility and generator power. Rated at 150 A and housed in a rugged NEMA 3R enclosure, it combines a service-entrance disconnect (SED) with a dependable automatic transfer mechanism — streamlining installation and protecting your mid-size home or light commercial site during outages.

• 150 A service-entrance rated (SED) transfer switch
• Single-phase 120/240 VAC, 2-pole design
• NEMA 3R outdoor-rated galvannealed-steel enclosure (rain- & corrosion-resistant)
• 22 kA breaker withstand rating helps protect downstream equipment
• Separates utility and generator sources to prevent back-feed
• Works with Briggs & Stratton standby generators and most comparable 120/240 V units
• Brown-out sensing and break-before-make action for smooth transfers
• UL 1008 listed / cUL certified (meets national electrical codes)

Seamless, automatic protection

If 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 provides 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 mounts outdoors 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: 150 A • Voltage/Phase: 120/240 VAC, 1φ • Poles: 2 • Enclosure: NEMA 3R • Listing: UL 1008

Size

30.1" × 14.5" × 7.0"

Weight

49 lb