Square D EJB26090 90A 2-Pole 347 V Circuit Breaker

Overview

The Square D EJB26090 90A 2-Pole 347 V Circuit Breaker is a purpose-built protection device designed for commercial electrical systems. With a 90‑amp current rating, two poles, and a 347‑volt capacity, this breaker provides dependable overcurrent protection for high‑demand feeders and branch circuits in demanding environments.

Core specifications

• Part Number: EJB26090
• Brand: Square D
• Current rating: 90 A
• Poles: 2
• Voltage rating: 347 V

Why this matters

• Two-pole design safeguards both conductors in two‑pole or three‑phase configurations, ensuring simultaneous interruption during a fault for safer, more reliable protection.
• The 347 V rating makes it well-suited for commercial/industrial distribution systems where higher voltage conductors are common, helping you protect expensive equipment and reduce downtime.
• OEM‑quality construction from Square D means compatibility with Square D panels and protection schemes, offering consistent performance and easing maintenance across a facility.

Ideal use cases

• Feeder protection for large HVAC units, pumps, and motors in commercial buildings
• Protection of main or branch circuits in electrical rooms and service panels that operate at 347 V systems
• Replacement part for existing Square D installations to maintain system reliability

How it helps you succeed

• Clear, predictable trip behavior minimizes unexpected outages and protects upstream equipment from damage due to overloads or short circuits.
• Reliable performance in high-current applications reduces nuisance trips and extends the life of your electrical infrastructure.
• Having the correct part number (EJB26090) ensures you’re selecting a precise, compatible device for your Square D panel ecosystem.

Installation and compatibility tips

Install this breaker in a compatible Square D distribution panel designed to accept EJB-series devices. Verify that the panel’s rating and labeling permit a 90 A, 2‑pole, 347 V protection device, and follow local electrical codes during installation. If you’re replacing an existing breaker, ensure the form factor and mounting style align with your panel’s specifications to maintain a secure fit and reliable trip performance.