Siemens LGG3B100 100A 3-Pole 600 V Circuit Breaker Potential Transformer

Siemens LGG3B100: 100 A, 3-Pole, 600 V Circuit Breaker

The Siemens LGG3B100 is a robust 3-pole circuit breaker engineered for dependable protection in three-phase power systems. With a 100 A current rating and a 600 V voltage rating, this device is purpose-built for demanding industrial and commercial environments where safety, reliability, and precise protection are non-negotiable. The part number LGG3B100 ensures seamless compatibility with Siemens switchgear and distribution panels, making it an ideal upgrade or replacement for existing installations.

Key specifications at a glance

• Current rating: 100 A
• Poles: 3 (three-phase protection)
• Voltage rating: 600 V
• Part number: LGG3B100
• Brand: Siemens

Why this LGG3B100 stands out

• Designed to drop into compatible Siemens panels and switchgear, reducing installation complexity and ensuring consistent performance with other Siemens protection devices.
• Three-phase safeguard: The 3-pole design provides synchronized protection across all phases, helping prevent unbalanced loads and equipment damage in motor drives, pumps, and other three-phase equipment.
• Standardized 600 V protection: Suitable for a wide range of industrial distribution applications that operate within 600 V systems, offering reliable overload and short-circuit protection when properly installed.
• Durable, service-friendly architecture: Built for field replacement and easy maintenance, making it a practical choice for ongoing reliability in busy electrical rooms or plant floors.

Ideal use cases

• Main or feeder protection in three-phase distribution panels for manufacturing facilities, warehouses, and large workshops
• Protection for three-phase motors, conveyors, pumps, and HVAC equipment in industrial environments
• Replacement or upgrade in existing Siemens panelboards where a 100 A, 3-pole, 600 V breaker is required
• System protection in setups that may incorporate potential transformers for metering and protection schemes

Installation and compatibility tips

Ensure you install the LGG3B100 in a compatible Siemens panel or switchgear that accepts this part number. Follow all applicable electrical codes and manufacturer instructions for mounting, connection, and clearance. Because it’s a 3-pole device, verify three-phase alignment and ensure secure terminal connections to maintain reliable protection and predictable tripping behavior.

What you gain with Siemens reliability

Choosing the LGG3B100 means aligning with Siemens’ long-standing commitment to protection, compatibility, and serviceability. This circuit breaker delivers consistent performance within three-phase systems, supports streamlined maintenance workflows, and provides a reliable foundation for safeguarding essential industrial and commercial electrical infrastructure.