B250 - Square D 2-1/2" Bolt-On Rainproof Hub for QO/Homeline NEMA 3R Load Centers, Safety Switch & RB Devices, 5"W x 13.7"D x 8.3"H, UL Listed, CSA Certified

Product Overview

The Siemens B250 is a 2-1/2" bolt-on rainproof hub designed for use with Square D QO and Homeline NEMA 3R load centers, safety switches and RB devices. It provides a rainproof attachment point for conduit and electrical connections.

Dimensions are 5" wide × 13.7" deep × 8.3" high. The product is UL Listed and CSA Certified.

Key Features

• Bolt-on rainproof hub for QO/Homeline NEMA 3R load centers, safety switches and RB devices
• Mounted 2-1/2" hub size
• Overall dimensions: 5" W × 13.7" D × 8.3" H
• UL Listed and CSA Certified

Function and intended use

The B250 is a rainproof bolt-on hub intended to provide a secure conduit entry/attachment for Square D QO and Homeline NEMA 3R load centers, compatible safety switches and RB devices. It is described as a hub accessory rather than a standalone circuit breaker or enclosure.

• Provides rainproof conduit attachment for outdoor-rated (NEMA 3R) equipment
• Bolt-on installation to compatible load centers, safety switches and RB devices

Dimensions and physical fit

Use the B250's published dimensions to confirm physical fit and clearance in your installation.

• Overall dimensions: 5" wide × 13.7" deep × 8.3" high
• Hub size: 2-1/2" (bolt-on)

Compatibility and mounting

The B250 is specified for bolt-on mounting to Square D QO and Homeline NEMA 3R load centers, safety switches and RB devices. Confirm that the target enclosure or device is one of these types before ordering.

• Designed for QO and Homeline series NEMA 3R load centers
• Intended for use with compatible safety switches and RB devices

Certifications and regulatory listings

The B250 carries UL Listing and CSA Certification as indicated by the product data. Use these listings to verify compliance with applicable local codes and project requirements.

• UL Listed
• CSA Certified

Before You Order

Confirm the model number and that the target load center, safety switch or RB device is a Square D QO or Homeline NEMA 3R unit before ordering.

• Verify physical mounting points and clearances using the listed dimensions.
• Confirm the 2-1/2" hub size matches the conduit and fittings for your installation.

Ordering from Lumera Electric

Check the purchasing options shown on the Lumera Electric product page for B250 - Square D 2-1/2" Bolt-On Rainproof Hub for QO/Homeline NEMA 3R Load Centers, Safety Switch & RB Devices, 5"W x 13.7"D x 8.3"H, UL Listed, CSA Certified. For project quantities or additional ordering requirements, use Request a Quote and provide the required quantity.