Siemens | LGB1B020 | Circuit Breaker | 20A | 1-Pole | 347V

Siemens LGB1B020 Circuit Breaker is a precise, OEM-rated protective device designed to safeguard 347V circuits with a compact 1-pole configuration. With a 20A rating, it interrupts fault currents efficiently to protect wiring and connected equipment, while enabling a quick reset after a trip.

This model is ideal for maintenance, retrofit, and replacement projects where exact specifications are required. It slots into compatible Siemens panels where a 1-Pole, 20A, 347V breaker is specified. The part number is the most reliable reference for compatibility—always verify the fitment against your panel catalog before ordering.

Key specifications

• Amperage: 20A
• Poles: 1-Pole
• Voltage: 347V
• Part reference: LGB1B020

What makes this Siemens breaker stand out

• OEM design from Siemens ensures precise fit and consistent performance in compatible panels and distribution boards.
• Optimized for 347V systems, making it a dedicated choice for commercial and industrial installations that rely on higher-voltage distribution.
• Compact 1-Pole form factor supports tight spaces in crowded panels while delivering reliable branch-circuit protection.
• Clear, traceable part reference helps avoid mismatches during maintenance or retrofit work.

Ideal use cases

• Routine maintenance replacements for failed breakers in Siemens-equipped installations that require 20A, 1-Pole protection at 347V.
• Retrofit projects and panel upgrades where matching ratings minimizes wiring changes and preserves protective coordination.
• Replacement in legacy setups that specify LGB1B020 to maintain safety and operational continuity.

Practical installation tips

• Always confirm fit and ratings against your panel’s labeling before ordering—part number LGB1B020 is your best compatibility reference.
• Power down the circuit and test for zero voltage before removing or installing the breaker to ensure safe, effective work.
• Store spare breakers in a dry, cool environment to preserve internal mechanisms and accurate labeling for quick cross-checks later.