Square D EJB36090 - 90 A, 600 V, 3-Pole Bolt-On Circuit Breaker | AmpState

Meet the Square D EJB36090—a 3-pole, bolt-on molded case circuit breaker designed to deliver dependable branch circuit overcurrent and short-circuit protection in panelboards and loadcenters. With a 90A rating and a 600V capacity, it’s built to handle demanding electrical systems across residential, commercial, and light industrial environments.

• Secure bolt-on mounting provides a rigid, vibration‑resistant bus connection that stays tight through the life of the installation.
• Thermal-magnetic trip unit delivers stable, repeatable protection by combining thermal overload sensing with magnetic short-circuit interruption, reducing nuisance trips and safeguarding connected equipment.
• OEM-compatible design is engineered to drop into matching Square D load centers and panelboards, simplifying replacement, maintenance, and long-term serviceability.
• Three-pole construction ensures synchronized protection across all phases, essential for balanced 3‑phase distribution networks.

Ideal use scenarios:

• Panelboard or loadcenter installations requiring reliable protection on circuits up to 90A and up to 600V.
• Residential, commercial, and light industrial applications where a robust, vibration‑resistant connection is important for performance and longevity.
• New builds or retrofit projects that benefit from a bolt-on MCCB that aligns with OEM components for consistent, predictable operation.

Practical considerations for installation:

• Match the amperage (90A) and voltage (600V) ratings to your system specifications to ensure correct trip behavior.
• Confirm bolt-on mounting compatibility with your panelboard chassis and secure the breaker properly to maintain a solid, durable connection.
• Use the EJB36090 as part of a comprehensive protection strategy for branch circuits that require reliable interruption during overloads or short circuits.

From AmpState, you get a trusted Square D solution that blends mechanical robustness with precise protection characteristics. The EJB36090 is designed to support reliable, long-term performance in real-world electrical networks, giving installers and facility managers confidence in their protection strategy.