Square D EJB24020 - 20 A, 480 V, 2-Pole Bolt-On Circuit Breaker | AmpState

Meet the Square D EJB24020 — a 20A, 480V, 2-pole bolt-on molded case circuit breaker engineered to deliver dependable branch circuit overcurrent and short-circuit protection in panelboards and load centers. Built to handle demanding electrical environments, this breaker combines rugged mounting with precise protection so you can trust your critical circuits stay safe and available.

• Secure bolt-on mounting provides a rigid, vibration-resistant bus connection that stays engaged even in environments with machinery or movement.
• Thermal-magnetic trip unit delivers stable, repeatable protection—responding to overloads and short circuits with a predictable trip curve for reliable coordination.
• 2-pole design ensures simultaneous disconnection of both conductors, delivering complete protection for 2‑wire or 3‑phase configurations in compatible systems.
• 480V rating makes it suitable for commercial and light industrial electrical distribution, as well as applications requiring robust high-voltage protection.
• OEM-compatible with matching Square D panels and load centers, simplifying replacement and reducing installation friction.
• Versatile application appropriate for residential, commercial, and light industrial settings that rely on reliable 480V protection for critical circuits.

Technical specifications at a glance

• Manufacturer: Square D
• Part Number: EJB24020
• Type: Thermal-magnetic molded case circuit breaker
• Amperage Rating: 20A
• Voltage Rating: 480V
• Number of Poles: 2
• Mounting Style: Bolt-on
• Application: Branch circuit overcurrent and short-circuit protection

Practical use cases and scenarios

• Protecting critical branch circuits in 480V panelboards and load centers found in commercial facilities, industrial spaces, or electrical rooms.
• Replacing aged or tripped breakers in compatible Square D systems to restore reliable protection without changing the panel layout.
• Coordinating protection for equipment with moderate to high inrush or fault current—thanks to the thermal-magnetic trip that handles both overloads and short circuits.
• Specifically suited for circuits that operate at higher voltages, ensuring clean, predictable shutoffs that help prevent collateral damage to downstream devices.

Why this Square D breaker stands out

Beyond basic specs, the EJB24020 delivers a tangible upside for installers and facilities managers. The secure bolt-on mounting minimizes movement and wear on bus connections, a common pain point in vibration-prone environments. The thermal-magnetic trip unit provides consistent protection characteristics over time, reducing nuisance trips and helping you maintain uptime on essential circuits. Its OEM compatibility means fewer compatibility concerns and faster replacement when you’re updating or expanding a panel or load center.

Designed for a range of installation contexts—from residential-adjacent setups to light industrial environments—this 2-pole breaker is the dependable choice when you need precise protection on 480V systems and want assurance that everything remains in sync with your Square D panels and load centers. If you’re building, retrofitting, or maintaining a 480V distribution network, the EJB24020 offers the right balance of performance, reliability, and ease of integration.

Ready to secure your electrical distribution with exacting protection and a rock-solid fit? Add the Square D EJB24020 to your panel and experience how precise, durable circuit protection can enhance reliability across your facility.