Siemens | NEB1B025B | Circuit Breaker | 25A | 1-Pole | 277V | Bolt-On

Meet the Siemens NEB1B025B — a 25A, 1-Pole circuit breaker designed for 277V circuits. This Bolt-On unit is purpose-built for maintenance, retrofit, and replacement projects where exact spec matching matters, helping you keep critical commercial and industrial systems protected without guesswork.

• Amperage: 25A
• Poles: 1-Pole
• Voltage: 277V
• Mounting: Bolt-On
• Part Number: NEB1B025B

Why this Siemens NEB1B025B stands out

Designed to snap into compatible Siemens enclosures that accept NEB-style breakers, this unit delivers dependable overcurrent protection for a single branch circuit. The bolt-on mounting provides a solid, vibration-resistant connection, making it an ideal choice for retrofit projects where existing panels require a precise 277V, 25A solution. Because the part number is the best reference for compatibility, you can confidently match it to the exact enclosure and bus configuration in your system.

Ideal use cases

• Retrofit and upgrade projects in commercial spaces with 277V distribution where a 25A single-pole protection is needed.
• Maintenance replacements to restore reliable circuit protection without swapping the entire panel.
• Repairs that require exact spec matching to existing Siemens NEB bolt-on breakers.

Installation considerations and tips

• Verify that your panel accepts NEB-type bolt-on breakers and that the 25A, 1-Pole, 277V rating matches the circuit requirements.
• Use the exact part number (NEB1B025B) as the compatibility reference to avoid mismatches in ratings or mounting.
• Follow your enclosure’s installation guidelines for bolt-on breakers, ensuring secure mounting and proper electrical connections.

For precise protection aligned with your wiring plan, this Siemens NEB1B025B offers a reliable, spec-accurate solution. It’s the targeted replacement part that helps keep 277V circuits protected, with installation flexibility tailored for retrofit and maintenance workflows.