Square D EDB34090 - 90 A, 480 V, 3-Pole Bolt-On Circuit Breaker | AmpState

The Square D EDB34090 is a rugged, molded‑case circuit breaker engineered to safeguard your panelboards and load centers against branch‑circuit overcurrent and short‑circuit events. At 90A and 480V, this 3‑pole device is built for stable, reliable protection in demanding electrical environments.

• Secure bolt‑on mounting—provides a rigid, vibration‑resistant bus connection for dependable operation in panels subject to movement or vibration.
• Thermal‑magnetic trip unit—delivers stable, repeatable protection performance by precisely responding to both overload and short‑circuit conditions.
• OEM‑grade compatibility—designed to work seamlessly with matching OEM load centers and panelboards for straightforward replacements and upgrades.
• Broad applicability—suitable for residential, commercial, and light industrial applications where robust 3‑phase protection is required.

Technical snapshot

• Manufacturer: Square D
• Part number: EDB34090
• Type: Thermal‑magnetic molded case circuit breaker
• Amperage rating: 90 A
• Voltage rating: 480 V
• Number of poles: 3
• Mounting style: Bolt‑on
• Application: Branch circuit overcurrent and short‑circuit protection

Why choose the Square D EDB34090 in your electrical panel upgrade or new installation? This 3‑pole bolt‑on breaker is purpose‑built for reliability in 3‑phase systems, delivering precise protection without compromising on mounting integrity or ease of replacement. Its bolt‑on design ensures a solid mechanical connection to the bus, minimizing bounce and heat buildup in environments where vibration or panel movement is common. The integrated thermal‑magnetic trip mechanism provides predictable tripping behavior, helping prevent nuisance trips while still safeguarding wiring and equipment from faults.

Practical use cases to consider:

• Upgrading legacy panels to a modern 3‑pole, 480V protection scheme for commercial spaces or light industrial facilities.
• Replacing a failed 90A breaker in a 3‑phase load center where consistent trip characteristics are critical for sensitive equipment.
• Implementing reliable branch‑circuit protection in panels that experience vibration, such as mechanical rooms, industrial conditioning equipment, or data center flooring installations.
• Specifying a compatible 3‑pole, 480V bolt‑on breaker for new construction in commercial electrical rooms requiring robust, standards‑compliant protection.

In short, the Square D EDB34090 combines secure mounting, precise thermal‑magnetic protection, and OEM‑level compatibility into a single, dependable solution for 3‑phase 480V systems. If you’re stocking your panelboards and load centers for reliable, long‑term protection, this 90A bolt‑on breaker is designed to meet the demands of residential, commercial, and light industrial applications with confidence.