Schneider Electric | EJB14045 | Circuit Breaker | 45A | 1-Pole | 277V

Schneider Electric EJB14045 Circuit Breaker delivers targeted overcurrent protection for 277V circuits with precision and reliability. Designed for commercial and retrofit environments, this 45A, 1-pole breaker guards against electrical faults while keeping essential equipment up and running.

Key specifications

• Amperage: 45A
• Poles: 1-Pole
• Voltage: 277V
• Part number: EJB14045

Why this breaker stands out

From a trusted Schneider Electric lineage, the EJB14045 is built for consistent performance in demanding electrical panels. Its 1-pole design is ideal for protecting a single leg of a 277V circuit—common in commercial lighting, equipment feeds, and critical subcircuits—while delivering predictable trip characteristics that align with your system’s protection strategy. The result is a safer, more stable electrical environment with reduced risk of nuisance trips that disrupt operations.

Ideal use cases

• Maintenance replacements in existing panels where the 1-pole, 277V configuration matches the original equipment.
• Retrofit projects upgrading or upgrading protection for dedicated 277V branch circuits in offices, retail spaces, and light industrial facilities.
• Replacement of aging breakers that no longer meet current safety and performance standards.

Compatibility and installation guidance

• Always confirm fit and ratings before ordering; the part number is the most reliable reference for compatibility.
• Check your electrical panel’s labeling and documentation to ensure a 1-pole 277V breaker with a 45A rating matches the panel’s bus design and protection plan.
• Use proper safety procedures during replacement: de-energize the panel, verify absence of voltage, and ensure all tooling is insulated.

Practical advantages and tips

With the EJB14045, you gain a clear protection boundary for a single 277V circuit, helping prevent damage to transformers, lighting assemblies, and connected loads. For optimal performance, pair this breaker with a panel that supports Schneider Electric’s form factor and trip characteristics, ensuring quick, reliable trips when faults occur. If you’re coordinating multiple circuits, document each breaker’s amperage and voltage rating to maintain an organized, safe electrical distribution system.

In summary, the Schneider Electric EJB14045 45A, 1-Pole, 277V circuit breaker is a purpose-built solution for maintenance, retrofit, and replacement tasks where precise specifications and dependable protection matter most. Use the part number EJB14045 as your definitive reference to verify compatibility and deliver a safe, code-compliant upgrade to your electrical panel.