Square D EJB16020 - 20 A, 347 V, 1-Pole Bolt-On Circuit Breaker | AmpState

The Square D EJB16020 is a 20A, 347V, 1-pole bolt-on molded case circuit breaker engineered for dependable branch-circuit overcurrent and short-circuit protection in panelboards and load centers. Built to withstand the rigors of real-world electrical environments, this unit combines secure mounting with precise thermal-magnetic protection to keep critical circuits safe and operating smoothly.

• Bolt-on mounting delivers a rigid, vibration-resistant bus connection for reliable performance even in panels subject to movement or dynamic loads.
• Thermal-magnetic trip unit provides stable, repeatable protection by quickly clearing faults while minimizing nuisance trips during normal inrush conditions.
• 1-pole, 20A at 347V configuration is ideal for protecting individual branch circuits in commercial or residential settings that use 347V distribution.
• OEM-compatible design ensures seamless integration with matching Square D load centers and panelboards for straightforward replacement and upgrade paths.
• Versatile applications—suited for residential, commercial, and light industrial environments where reliable, space-efficient protection is a priority.

Why this breaker fits your panel and electrical needs

Choosing the Square D EJB16020 means opting for a breaker that prioritizes solid electrical contact, precise protection, and compatibility with established Square D panel ecosystems. The bolt-on style secures a robust connection to the bus bars, reducing contact resistance and the potential for arcing in vibration-prone installations. The thermal-magnetic trip unit responds to both gradual overloads and sudden short-circuit events, helping to protect wiring insulation and connected equipment.

Technical snapshot

• Manufacturer: Square D
• Part Number: EJB16020
• Type: Thermal-magnetic molded case circuit breaker
• Amperage Rating: 20A
• Voltage Rating: 347V
• Number of Poles: 1
• Mounting Style: Bolt-on
• Application: Branch circuit overcurrent and short-circuit protection

Practical use cases and installation notes

• Ideal for protecting individual branch circuits in commercial lighting panels and service panels that operate at 347V distributions.
• Perfect for upgrading or replacing worn breakers in OEM-aligned panelboards where a secure bolt-on connection is required.
• Simple to inspect and test—verify trip functionality periodically to ensure ongoing reliability as part of routine panel maintenance.
• When wiring, follow all local electrical codes and manufacturer guidelines to maintain safety and performance standards.

With the Square D EJB16020, you gain a dependable, location-appropriate protection solution that seamlessly integrates into your existing Square D infrastructure while delivering targeted branch-circuit safety for homes, businesses, and light industrial setups.