Square D B250 Safety Switch, Homeline, QO, Bolt-On, NEMA 3R | AmpState

The Square D B250 Safety Switch is a purpose-built disconnect that enables safe equipment isolation right at the point of use. Designed with retrofit and maintenance in mind, it helps you keep part numbers consistent while upgrading or servicing critical systems.

Key advantages that matter on the job

• Homeline QO Bolt-On compatibility: Seamless integration with your existing Homeline QO panels for a tidy, reliable installation.
• NEMA 3R enclosure: Weather-resistant design that stands up to outdoor or harsh environments, protecting the disconnect from the elements.
• Point-of-use disconnect and isolation: Quickly shut down equipment for safe maintenance without routing power through the whole system.
• Consistent part number (B250): Ideal for retrofit planning where inventories and part references must stay stable over time.
• Bolt-On mounting: Fast, secure installation that minimizes downtime during replacements or upgrades.

Why this safety switch fits your retrofit and maintenance workflow

When projects require predictable parts, the B250 is a dependable choice. It keeps you compliant with standard electrical practices while simplifying stock management. The NEMA 3R-rated enclosure ensures protection against rain, snow, and incidental impacts, so you can place the disconnect at the exterior load point without worry. And with a bolt-on approach, you can upgrade legacy setups without extensive rewiring.

Ideal use cases

Electric contractors, facility maintenance teams, and industrial operators who need reliable, at-the-point-of-use isolation will appreciate the B250 in applications like service entrances, outdoor equipment enclosures, pumps, conveyors, and HVAC systems. It’s especially useful in retrofit scenarios where maintaining the exact part number minimizes change orders and inventory headaches.

Specifications at a glance

• Manufacturer: Square D
• Part number: B250
• Product type: Safety Switch / Equipment Disconnect
• Mounting: Bolt-On
• Enclosure rating: NEMA 3R
• Series: Homeline QO
• Availability: AmpState

Need help matching a part number or confirming compatibility? Send us a message and we’ll verify fit for your exact panel and wiring configuration. The Square D B250 from AmpState helps you modernize safely without sacrificing reliability or inventory control.