Square D | A1B3100 | Circuit Breaker | 3-Pole | 240V | Bolt-On

Square D A1B3100 is a 3-pole, 240V bolt-on circuit breaker engineered for demanding electrical environments where quick, secure replacements matter. Designed for maintenance, retrofit, and replacement projects, this unit enables fast service without heavy panel customization, helping you restore reliable protection with minimal downtime.

Key strengths that set the A1B3100 apart

• Three-phase, 240V protection tailored for circuits that power motors, pumps, conveyors, and other multi‑phase equipment in commercial and industrial settings.
• Bolt-on mounting delivers faster field installation and cleaner wiring compared to more complex mounting options, reducing service time and exposure to panel downtime.
• Clear compatibility reference use the part number A1B3100 as the primary guide to verify fit and ratings with your Square D panelboard or enclosure.

Ideal for

• Maintenance technicians performing routine replacements in existing Square D systems
• Retrofits and upgrades where a like-for-like, bolt-on 3-pole breaker is required
• OEM applications integrating dependable protection into new equipment that uses bolt-on 3-pole devices

What problems this breaker solves

• Minimizes panel downtime by enabling rapid swap-out with a compatible, trusted Square D unit
• Maintains consistent three-phase protection across your system, reducing the risk of unbalanced loads
• Provides a reliable, code-aligned replacement that aligns with your existing 240V, three-pole configuration

Practical installation and compatibility tips

• Always confirm fit and ratings before ordering; the A1B3100 is the best reference for ensuring compatibility with your panel or enclosure
• Check that your panel supports bolt-on three-pole breakers and that the bus arrangement matches a 240V, 3-phase configuration
• Keep the exact part number accessible during procurement to avoid mismatches with alternate models

When you need a dependable, fast-install solution for 3-pole 240V protection, the Square D A1B3100 delivers straightforward replacement without compromising safety or performance. Add it to your service kit for \u2013 and a smoother path to uninterrupted operation.