Square D EJB34020LH Circuit Breaker, 20A, 3-Pole, 277V

Meet the Square D EJB34020LH circuit breaker — a 20A, 3-pole unit engineered for industrial electrical service, maintenance, and replacements. Designed for 277V three‑phase systems, this breaker protects your critical equipment while keeping downtime to a minimum. Verify fit by part number EJB34020LH to ensure you’re selecting the right breaker for your panel and application.

Why this 3-Pole, 277V breaker stands out

• Three-pole design delivers reliable protection across all three conductors of a 277V three‑phase system
• 20A rating provides precise current protection for circuits that require moderate load capacity
• 277V compatibility aligns with common industrial and commercial power distribution setups
• Part of Square D’s trusted EJB lineup, enabling straightforward identification with the EJB34020LH part number
• Ideal for service, maintenance, and replacement projects where exact part-number compatibility matters

Practical use cases

Use this circuit breaker when upgrading or replacing breakers in industrial panels serving three‑phase 277V circuits. Its 3‑pole configuration ensures simultaneous disconnection across all phases, helping prevent hazardous voltage conditions during maintenance and repair tasks.

Compatibility and installation notes

To confirm exact fit, match the part number EJB34020LH with your panel’s requirements and application. If you’re uncertain about compatibility, message us and we’ll help verify whether this 20A, 3-pole, 277V breaker is the right choice for your system.

Specifications

• Manufacturer: Square D
• Part Number: EJB34020LH
• Product Type: Circuit Breaker
• Amperage: 20 A
• Poles: 3
• Voltage: 277V