Siemens | NEB3B110B | Circuit Breaker | 110A | 3-Pole | 600V | 35kA | Bolt-On

Siemens NEB3B110B is a purpose-built 3-pole bolt-on circuit breaker designed for demanding industrial environments, retrofit projects, and reliable maintenance replacements. When protection and uptime matter, this 110 A device delivers consistent performance in standard 600 V systems.

Key specifications

• Amperage: 110 A
• Poles: 3-Pole
• Voltage rating: 600 V
• Interrupting capacity: 35 kA
• Mounting type: Bolt-On
• Part number: NEB3B110B

Applications and use cases

This breaker is ideal for panel retrofits, maintenance outages, and replacement scenarios where a precise, compatible 3-pole bolt-on solution is required. Use it to protect feeders and circuits in 600 V industrial distributions, switchgear, or motor control centers where a robust 110 A protection device is appropriate. The 35 kA interrupting capacity provides a strong margin against short-circuit events, helping minimize damage and downtime in busy facilities.

Installation and compatibility

Before ordering, confirm fit and ratings for your specific installation. The NEB3B110B is referenced by its part number, which remains the best guide for compatibility with your enclosure, bus configuration, and mounting hardware. Because bolt-on breakers rely on precise mounting and contact alignment, ensure the panel or switchgear supports bolt-on 3-pole devices of this rating and voltage.

Why this Siemens breaker stands out

• Direct-fit replacement potential: Designed to align with Siemens' engineering standards, making retrofit projects smoother and reducing rework.
• Clear protection for 3-phase systems: The 3-pole configuration provides balanced protection across all three phases, essential for motors and 3-phase distribution.
• Solid mechanical design: Bolt-On mounting offers secure, vibration-resistant installation with reliable contact pressure over time.
• Durable electrical rating: 600 V operation and 35 kA interrupting capacity deliver dependable performance in demanding environments.

Ideal for

• Electrical contractors performing panel upgrades or equipment replacements
• Facility engineers maintaining manufacturing lines, control rooms, and distribution boards
• OEMs integrating reliable protection into new builds that require Siemens-grade circuit protection

Note: Always verify the exact fit with the panel catalog and use the NEB3B110B part number as the compatibility reference to ensure proper mounting and ratings for your application.