Siemens LGB1B100B 100A 1-Pole 347 V Circuit Breaker

Meet the Siemens LGB1B100B 100A 1-Pole 347 V Circuit Breaker—a purpose-built protection device designed for reliable overcurrent protection in commercial and industrial electrical systems. Built to safeguard a single hot leg, this breaker shuts down quickly when current spikes occur, helping prevent damage to wiring, devices, and downstream equipment in demanding 347 V distribution environments.

Key features and what they mean for you:

• Current rating: 100 A — provides robust protection for high-demand circuits while allowing smooth operation for everyday loads.
• Poles: 1 — compact, space-saving form factor ideal for single‑line protection in panelboards and distribution panels.
• Voltage rating: 347 V — suitable for commercial and industrial setups that utilize 347 V distribution, expanding compatibility beyond standard low-voltage breakers.
• Part Number: LGB1B100B — precise identification ensures straightforward ordering, replacement, and compatibility within Siemens’ LGB1 family.

Why this breaker stands out

• Siemens build quality you can trust, designed to integrate seamlessly with existing Siemens panels and protection schemes.
• Compact 1-pole design delivers reliable single‑line protection without unnecessary footprint, helping maximize panel real estate.
• Clear, predictable tripping behavior reduces downtime and simplifies fault isolation for maintenance teams.
• Optimized for 347 V distribution, making it a practical choice for commercial spaces with higher voltage distribution needs.

Ideal use cases

• Panelboard installations in offices, retail spaces, and light industrial facilities where a single conductor needs protection.
• Branch circuit protection for 347 V lighting and power circuits within commercial buildings.
• Replacement or upgrades in systems that already utilize the LGB1B series, ensuring consistent performance and compatibility.

Practical installation and care tips

• Verify 100 A, 1-pole, and 347 V ratings match the target circuit requirements before installation.
• Ensure the breaker is compatible with your panel’s bus arrangement and torque specifications are followed during mounting.
• Periodically inspect connections for signs of loosening or overheating and replace if any irregularities are found.

Choose the Siemens LGB1B100B 100A 1-Pole 347 V Circuit Breaker for dependable, targeted protection in commercial and industrial electrical systems. It’s the practical, straightforward solution when you need single‑pole overcurrent protection that aligns with 347 V distribution, backed by Siemens’ proven reliability.