Siemens | LGG3B040L | Circuit Breaker | 3-Pole | 600V | Feed-Through

Siemens LGG3B040L — 3-Pole 600V Feed-Through Circuit Breaker

Designed for reliability in industrial panels, the Siemens LGG3B040L is a 3-pole circuit breaker with a 600V rating and feed-through terminals. It's built for maintenance, retrofit, and replacement projects where exact compatibility matters, helping you protect distribution circuits while simplifying downstream wiring.

• Three-pole protection for balanced safeguarding of 3-phase loads and downstream circuits.
• 600V classification aligned with common industrial power distribution requirements.
• Feed-through design enables straightforward wiring to downstream devices, reducing terminal clutter and simplifying future expansions.
• Part-number fidelity LGG3B040L is the definitive reference for compatibility; verify fit and ratings before ordering.
• Maintenance, retrofit, and replacement readiness ideal for upgrading aging panels, adding protection in new layouts, or swapping worn breakers without overhauling the panel.

How this breaker solves real-world problems

In busy facilities, downtime costs time and money. The LGG3B040L helps you keep systems protected with a reliable disconnect that matches existing Siemens gear. The feed-through configuration streamlines installations by providing clean, direct connections to downstream circuits, which is especially valuable during panel retrofits or when expanding three-phase distributions.

Use cases and ideal applications

• Maintenance windows where a secure, compatible replacement is needed without recalibrating an entire panel.
• Retrofits upgrading older switchgear to modern Siemens protection with a 3-pole, 600V footprint.
• New installations in facilities that require a dedicated three-phase breaker with feed-through capability.

Specification snapshot

Poles: 3-Pole

Voltage rating: 600V

Connection: Feed-Through terminals

Part reference: LGG3B040L