Square D | EJB36030 | Circuit Breaker | 30A | 3-Pole | 600V | Bolt-On

Meet the Square D EJB36030 Circuit Breaker—a rugged, bolt-on solution built for demanding electrical systems. This 30A, 3-pole unit is designed for maintenance, retrofit, and replacement projects where exact specifications matter, delivering dependable protection for 600V three‑phase circuits.

Key specifications

• Amperage: 30 A
• Poles: 3‑Pole
• Voltage: 600 V
• Mounting: Bolt-On
• Part number: EJB36030
• Brand: Square D

What makes this breaker stand out

This model is purpose-built for Square D panels that require a bolt-on, 3-pole configuration. The bolt-on mounting provides a secure, vibration-resistant connection—crucial in industrial environments where panel movement or equipment vibrations can loosen connections over time. By sticking to the exact part number, you preserve panel integrity and protection performance without improvisation.

Ideal use cases

• Maintenance: replace aging or worn breakers with a precise 30A/3-pole match to restore original protection levels
• Retrofit: upgrade legacy systems with a bolt-on solution that simplifies field service and future maintenance
• Replacement: maintain continuity in existing Square D setups by using the exact reference for compatibility
• Three‑phase protection: suitable for distributing power in 600V industrial or commercial setups

Installation and compatibility tips

Always confirm fit and ratings against your panel documentation before ordering. The EJB36030 part number is the most reliable reference for compatibility. If you’re replacing like-for-like in a supported Square D panel, you can expect straightforward bolt-on installation and a direct, reliable replacement path with minimal downtime.

Why it matters for your operation

Using the specified 30A, 3‑pole, 600V bolt-on breaker ensures your electrical protection aligns with original design intent, preserving safety clearances and system performance. This is not just a component swap—it’s a value decision for reliability, serviceability, and long‑term panel health in demanding environments.