Square D EDB36090 - 90 A, 600 V, 3-Pole Bolt-On Circuit Breaker | AmpState

Meet the Square D EDB36090—a 90 A, 600 V, 3-pole bolt-on molded case circuit breaker engineered to protect your panelboards and load centers from overcurrent and short-circuit events. With a purpose-built design for reliability, it delivers steady performance where it matters most in residential spaces, commercial settings, and light industrial environments.

Key features that matter in real-world panels

• Secure bolt-on mounting—provides a rigid, vibration-resistant bus connection for consistent electrical contact and long-term stability in crowded or busy electrical rooms.
• Thermal-magnetic trip unit—offers stable, repeatable protection by combining overload sensing with fast magnetic response to short circuits, helping prevent equipment damage and minimize nuisance trips.
• OEM-compatible design—specifically engineered to pair with matching Square D OEM load centers and panelboards for a seamless, reliable fit and straightforward replacement.
• Three-pole, 90 A at 600 V—suits three-phase distribution needs in commercial and light industrial applications, while delivering robust protection for branch circuits in larger electrical installations.

Why this breaker is a smart choice

Choosing the EDB36090 means selecting a component designed to endure the rigors of real-world electrical environments. The bolt-on mounting minimizes movement and arcing risk in panels exposed to vibration or thermal expansion, while the thermal-magnetic protection ensures fast, predictable responses to faults. When paired with compatible panelboards, it helps maintain consistent protection across your distribution system without compatibility headaches.

Ideal use cases

• Residential, commercial, and light industrial panelboards and load centers that require reliable three-phase protection
• New installations or spare-parts stocking for standard 90 A, 600 V branch-circuit protection
• Retrofits where a bolt-on solution is preferred for a secure, vibration-tolerant connection

Specifications at a glance

• Manufacturer: Square D
• Part number: EDB36090
• Type: Thermal-magnetic molded case circuit breaker
• Amperage rating: 90 A
• Voltage rating: 600 V
• Number of poles: 3
• Mounting style: Bolt-on
• Application: Branch circuit overcurrent and short-circuit protection

Practical considerations and setup tips

For a reliable installation, ensure the panelboard or load center is compatible with Square D bolt-on breakers and that mounting hardware is properly secured to maintain a solid bus connection. In environments with frequent equipment cycling or vibration, the bolt-on design helps keep electrical contacts tight, reducing the likelihood of contact resistance over time. Use the 90 A rating where branch circuits require substantial protection without compromising trip coordination with upstream devices.

Whether you're upgrading an aging panel, stocking spare parts for serviceability, or outfitting a new commercial space, the Square D EDB36090 provides targeted protection with a design-focused approach to durability and compatibility. It’s a practical, dependable choice for professionals who value precise protection, easy installation, and long-term performance in three-phase electrical systems.