1B10UM | Circuit Breaker | 10A | 1-Pole | 277V

Meet the 1B10UM industrial circuit breaker—a precisely specified, single-pole protection device designed for maintenance, retrofit, and replacement projects where exact specifications matter. With a 10A rating and a 277V operating voltage, this breaker is built to safeguard commercial and industrial circuits that run on higher line voltages.

• Amperage: 10A
• Poles: 1-Pole
• Voltage: 277V
• Reference: Part number 1B10UM — the most reliable identifier for compatibility

Why the 1B10UM stands out

When you’re upgrading or replacing protection in a panel that serves 277V circuits, the 1B10UM delivers a dependable, exact-fit solution. Its 1-pole configuration is ideal for isolating a single leg of a circuit, reducing nuisance trips while delivering responsive protection during overloads or faults. The 1B10UM’s form and ratings are chosen to align with systems that rely on 277V operation, helping you avoid mismatches that can complicate retrofits or maintenance.

Who this is ideal for

• Facilities managers and electrical contractors overseeing commercial or light industrial spaces
• Technicians performing panel retrofits, replacements, or routine maintenance on 277V circuits
• Owners seeking a straightforward, compatible replacement for a failed or outdated breaker

Practical use cases

• Replacing a worn or tripped breaker in 277V lighting or equipment circuits
• Retrofits where existing panels require a 1-pole, 10A device with 277V rating
• Maintenance tasks that demand a reliable, easy-to-identify part number for quick sourcing

Important compatibility notes

Notes: Confirm fit and ratings before ordering. The 1B10UM part number is the best reference for compatibility, ensuring you match the exact form, terminals, and tripping characteristics to your panel and circuit requirements.

Installation and handling guidance

• Power down the circuit and follow lockout/tagout procedures before replacement
• Verify electrical ratings on your panel and the new breaker match the system requirements
• Install per the panel’s installation instructions and applicable electrical codes
• Ensure secure terminal connections and proper seating within the enclosure after replacement

With the 1B10UM, you get a purpose-built solution that aligns with 277V single-pole protection needs, helping you maintain safe, reliable operation in demanding environments. This is more than a generic replaceable part—it's a targeted upgrade that supports efficient maintenance cycles and long-term system integrity.