Square D B125 Series Bolt-On H...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$22.76
Square D B125 Series Bolt-On Hub, Rainproof

Square D B125 Series Bolt-On Hub, Rainproof

(No reviews yet) Write a Review

Model: B150

In Stock (leaves warehouse same day if ordered before 3pm ET)

$22.76
Adding to cart… The item has been added
Free Shipping on orders over $199
We price match and offer bulk discounts! Click Add to Quote. It's quick and easy.
✨
Earn points with this purchase! You can redeem points for giftcards, iPads, XBox's and more. View Rewards
Free Keying on all locks
You may also like

Square D B125 Series Bolt-On Hub, Rainproof

The Square D B125 Series Bolt-On Hub is a rainproof conduit-entry accessory engineered to join hub connections to conduit on industrial circuit breaker enclosures. This family is available in Conduit Trade Sizes ranging from 1-1/4 in. through 3 in. (1-1/2 in., 1-1/4 in., 2 in., and 3 in. options), so installers can match the hub to the enclosure and conduit run on the job. Built with off-center conduit thread openings and a Hub Type B configuration, this bolt-on hub provides tough, reliable performance in the most grueling conditions. It supports a dead front housing for circuit breakers, molded case switches, and motor circuit protectors, and carries UL Listed certification for code-compliant commercial and industrial electrical work.

Key Features

  • Trade Size Range: Available in 1-1/4 in., 1-1/2 in., 2 in., and 3 in. conduit trade sizes to fit a range of industrial circuit breaker enclosures.
  • Bolt-On Hub Design: Easily joins the hub to conduit on industrial circuit breaker enclosures for a secure connection point.
  • Hub Type B Configuration: Part of the Square D B Series hub lineup for compatible circuit breaker enclosure applications.
  • Rainproof Construction: Tough, rainproof build delivers reliable performance for demanding outdoor and industrial environments.
  • Off-Center Conduit Thread Openings: Simplifies conduit alignment and entry during installation across all available sizes.
  • Dead Front Housing Compatibility: Supports enclosures for circuit breakers, molded case switches, and motor circuit protectors.
  • Mercury Free Construction: Manufactured without mercury for safer handling and disposal.

Certifications & Compliance

  • UL Listed
  • ROHS Eur Compliant with Exemptions

Technical Specifications

  • Hub Type: B
  • Product Or Component Type: Hub
  • Conduit Trade Sizes Available: 1-1/4 in., 1-1/2 in., 2 in., 3 in.
  • Warranty: 18 months
  • Mercury Free: Yes
  • ROHS Eur In Scope: Yes
  • Country of Origin: India

Typical Applications

  • Industrial Circuit Breaker Enclosures
  • Commercial and Industrial Electrical Installations
  • Conduit and Raceway Systems
  • Outdoor and Rainproof Enclosure Installations
  • Panelboard and Motor Circuit Protector Housings

Why Square D?

Square D by Schneider Electric engineers its B Series hub accessories for dependable, code-compliant performance in tough industrial settings. With rainproof construction, Mercury Free materials, and UL Listed certification across the full 1-1/4 in. through 3 in. size range, this bolt-on hub family is built to keep circuit breaker enclosures secure and reliable across commercial and industrial electrical installations.

Manufacturer Resources

Product Specs

Product Type:
Conduit Hub
Series:
B Series
Connection Type:
Bolt-On
Listing:
UL Listed
Department:
Electrical
Product Group:
Conduit & Raceway
Product Size:
1-1/4" - 3"
Configuration:
Hub Type B
Product Subgroup:
Conduit Fittings

Square D B150 – Frequently Asked Questions

1) What conduit trade sizes does the Square D B125 bolt-on hub come in?
Four sizes cover 1-1/4 inch through 3 inch: B125 (1-1/4 in.), B150 (1-1/2 in.), B200 (2 in.), and B3.00 (3 in.). Order by the trade size of the conduit entering the enclosure, not by the knockout you are patching.
2) Is this hub rated for outdoor use on a circuit breaker enclosure?
Rainproof construction, and UL Listed. That makes it suitable for outdoor and wet-exposed industrial enclosure entries where a rainproof conduit entry is required. It is described as rainproof, not submersible, so keep it to rainproof enclosure applications.
3) If the enclosure opening is threaded rather than bolt-prepped, what hub should be used instead of the Square D B125?
The B125 series uses a bolt-on connection, so it depends on an enclosure prepped for bolting the hub to the wall. Where the opening takes a screwed-on hub instead, the Crouse-Hinds Myers Scru-Tite basic hub in zinc die-cast is the style to look at, and the ABB TC Series universal raintight hub is offered as an interchangeable hub. Confirm the enclosure's hub prep before ordering, since a bolt-on Type B hub and a screw-type hub are not interchangeable in the same opening.
4) What kind of Square D equipment do these hubs go on?
They support dead front housings for circuit breakers, molded case switches, and motor circuit protectors, plus panelboard enclosures in commercial and industrial installations. Typical use is an industrial circuit breaker enclosure where conduit has to land on a rainproof hub entry.
5) Does this hub meet environmental requirements for a government or institutional job?
Mercury free construction and RoHS (EU) compliant with exemptions, and the hub is UL Listed. Country of origin is India, which is the detail most often requested on public procurement paperwork.
6) What other raintight conduit hubs could I use if the Square D B Series is not the right fit?
Two alternatives of the same type: the ABB TC Series universal raintight conduit hub, which is an interchangeable design rather than a Square D specific bolt-on, and the Crouse-Hinds Myers Scru-Tite basic hub in zinc die-cast. For a spec-grade insulated throat hub supplied with a locknut, the American Fittings AH in alloy steel covers that. The Square D B Series is the one to stay with when the enclosure calls for a Type B bolt-on hub.
7) I need to standardize hubs across several outdoor panels in different conduit sizes. Is this one family?
Yes, all four are the same B Series bolt-on, Hub Type B design with the same rainproof construction and UL Listing, differing only by conduit trade size (B125, B150, B200, B3.00). You can keep one hub family across 1-1/4, 1-1/2, 2 and 3 inch runs instead of mixing brands and styles.
8) Is a zinc die-cast Myers Scru-Tite hub a drop-in substitute for a Square D B125?
No. The Crouse-Hinds Myers Scru-Tite basic hub is a zinc die-cast screw-type hub, while the Square D B125 series is a bolt-on hub built in Hub Type B configuration specifically to join hub connections to conduit on Square D industrial circuit breaker enclosures. The two attach to the enclosure differently, so the Scru-Tite is a comparable product category rather than a direct replacement for a Type B bolt-on hub. Both the B125 and the ABB TC Series are offered as rainproof/raintight hubs if weather exposure is the deciding factor.
9) For standardizing hubs across a facility with mixed enclosure brands, is the Square D B125 or the ABB TC Series the better fit?
The Square D B125 series is a UL Listed rainproof bolt-on hub in Hub Type B configuration, covering 1-1/4 in. through 3 in. trade sizes, and is matched to Square D industrial circuit breaker enclosures. The ABB TC Series is a universal raintight conduit hub described as interchangeable, which is the angle an MRO buyer looks at when the enclosures on site come from several manufacturers. Where the enclosures are Square D breaker, molded case switch, or motor circuit protector housings, the Type B bolt-on hub is the pattern-specific choice.
10) Which hub should I use if I need an insulated throat for conductor protection instead of the Square D B125?
The Square D B125 series is a rainproof bolt-on hub in Hub Type B configuration and is not described with an insulated throat. If the job calls for an insulated throat at the entry, the American Fittings AH alloy steel insulated throat hub, which ships with a locknut and is spec-grade, covers that requirement. Choose based on whether the priority is the Type B bolt-on pattern for a Square D breaker enclosure or an insulated throat with a locknut for conductor protection.
11) Why are the conduit openings off-center on the B Series hub?
The conduit thread openings are off-center across all four sizes, which helps line the conduit up with the enclosure entry during installation. Worth knowing before you set your conduit stub, because the thread is not on the hub's geometric center.
How fast can I get the Square D B150 delivered?
Most orders ship the same day from our distribution partners, with quick delivery throughout the continental U.S. Need it urgently? Contact Us for expedited shipping options.
Can I return it if it doesn’t work for me?
Yes—ZenSupply offers a hassle-free return policy. If the product isn’t the right fit, reach out to our support team for a return authorization or setup a return by following our return instructions.
Does the Square D B150 come with a warranty?
Absolutely. The Square D B150 is backed by a manufacturer’s warranty. For full warranty terms, check the product documentation or Contact Us.
How do I get technical support or installation help for the Square D B150?
You can call, text, or email our expert support team for fast answers. We’re here to help with product selection, installation tips, and troubleshooting. Contact Us
Why buy the Square D B150 from ZenSupply?
ZenSupply makes it easy to get the commercial door hardware you need—fast shipping, expert support, and rewards on every order. Our team is always ready to help you choose the right product for your project.
!