Siemens | LGB3B035B | Circuit Breaker | 35A | 3-Pole | 480V

Meet the Siemens LGB3B035B Circuit Breaker—the reliable 3-pole protection solution for demanding 480V three-phase systems. With a 35A rating, this unit is designed for precise overcurrent protection in commercial and industrial applications, offering dependable performance for motor feeders, distribution panels, and retrofit projects.

Why choose the Siemens LGB3B035B

This circuit breaker isn’t just a component—it's a carefully engineered protection device built to maintain power reliability in busy electrical environments. Its three-pole design ensures simultaneous protection across all phases in a 3-phase circuit, reducing the risk of imbalanced loads and unexpected outages. When your system runs on 480V, you need a breaker that can handle the voltage while reliably interrupting fault currents at the right time.

Key specifications at a glance

• Amperage rating: 35A
• Poles: 3-Pole
• Voltage rating: 480V
• Part reference: LGB3B035B

What problems it solves

In industrial settings, protecting motors, feeders, and distribution circuits from overloads and short circuits is critical. The LGB3B035B provides targeted protection for 3-phase systems operating at 480V, helping prevent equipment damage, unplanned downtime, and costly repairs. Its rated 35A capacity is well-suited for circuits that require reliable protection without frequent nuisance trips.

Compatibility and installation considerations

Before ordering, confirm compatibility with your panel and system ratings. The part number LGB3B035B is the most reliable reference for matching the exact Siemens circuit breaker you need. If you’re upgrading or replacing an existing unit, ensure your panel configuration supports a 3-pole, 480V protection device and that the amperage matches your load calculations.

Ideal use cases

• Three-phase motor feeders in manufacturing or processing facilities
• Protection for 480V distribution panels in commercial buildings
• Retrofit projects where exact Siemens part numbers ensure seamless compatibility
• Back-up protection for critical 3-phase circuits in data centers or industrial environments

Practical tips for deployment

• Pair this breaker with compatible Siemens disconnects and enclosures designed for 3-pole, 480V protection to ensure reliable mounting and safe operation.
• Verify load calculations to ensure the 35A rating aligns with startup currents and continuous loads to minimize nuisance trips.
• Document the exact part number in maintenance logs to streamline future replacements or retrofits.