Square D EJB16050 - 50 A, 347 V, 1-Pole Bolt-On Circuit Breaker | AmpState

The Square D EJB16050 is a purpose-built 50A, 347V, 1-pole bolt-on molded case circuit breaker engineered to deliver reliable branch circuit protection in panelboards and load centers. Its secure bolt-on mounting ensures a rigid, vibration-resistant bus connection, so you won’t deal with loose contacts or nuisance trips in busy electrical environments. Paired with a thermal-magnetic trip unit, it delivers stable, repeatable protection that responds quickly to overcurrent and short-circuit events, helping protect wiring and connected equipment.

• Bolt-on mounting for a rugged connection keeps the breaker firmly seated in the panel, reducing movement and arcing in vibration-prone installations.
• Thermal-magnetic trip unit provides dependable protection with predictable trip curves across a range of loads, enhancing safety and reducing unexpected outages.
• OEM compatibility is designed to integrate seamlessly with matching Square D load centers and panelboards, simplifying replacements and upgrades.
• Versatile application suitable for residential, commercial, and light industrial environments where robust overcurrent protection is essential.

Technical details at a glance

• Manufacturer: Square D
• Part number: EJB16050
• Type: Thermal-magnetic molded case circuit breaker
• Amperage rating: 50 A
• Voltage rating: 347 V
• Poles: 1
• Mounting style: Bolt-on
• Application: Branch circuit overcurrent and short-circuit protection

Why this breaker fits your project

If you’re wiring a panelboard or load center in a commercial or light industrial setting, the EJB16050 provides a dependable shield for critical circuits. Its 347V rating makes it suitable for higher-voltage branch circuits common in commercial distributions, while the 1-pole design keeps installation straightforward for single-line protection scenarios. The combination of bolt-on mounting and a thermal-magnetic trip unit helps you achieve a durable installation with predictable performance, even in environments with periodic vibration or fluctuating load demands.

Ideal use cases and practical tips

• Upgrading or replacing a single 50A branch circuit in Square D panelboards or load centers that require a compatible, OEM-approved breaker.
• Designing electrical distributions for small commercial spaces, workshops, or light manufacturing where reliable overcurrent protection is essential.
• Situations where a robust mechanical connection is preferred to minimize movement-related issues in equipment stands or cabinets.

With the Square D EJB16050 installed, you gain precise, dependable protection for your 50-amp circuits at 347 volts, backed by a design that emphasizes secure mounting, stable trip performance, and seamless compatibility with matched panel systems. It’s a practical, long-term solution for electricians and facility engineers who value reliability, ease of installation, and consistent protection across diverse building applications.