Siemens KPB3B100 100A 3-Pole 240 V Circuit Breaker

Siemens KPB3B100 is a 100 A, 3-pole circuit breaker built for reliable protection in three-phase power systems at 240 V. With part number KPB3B100, this breaker is designed to be a precise fit for Siemens panels and compatible enclosures, delivering consistent performance across demanding commercial and light industrial environments.

In everyday terms, this means secure overload and short-circuit protection for your three-phase circuits, so equipment like motors, conveyors, HVAC drives, and other 3-phase loads stay safeguarded and quickly shut off if a fault occurs.

Distinctive advantages of the Siemens KPB3B100 3-Pole 240 V Circuit Breaker

• Three-pole protection covers all phases in a 3-phase system, preventing phase imbalances and ensuring coordinated tripping.
• 100 A rating provides robust protection for mid-range feeders and motor circuits without unnecessary trips during normal startup surges.
• 240 V operation aligns with common commercial power architectures, simplifying integration into existing electrical rooms and panels.
• Exact part match KPB3B100 ensures compatibility with Siemens catalogs, replacement parts, and service workflows.
• Trusted Siemens engineering supports long service life and predictable performance in challenging environments.

Who should consider this breaker?

Facilities managers, electricians, and panel installers who work with Siemens-based electrical systems will find the KPB3B100 a reliable choice for branch or main protection in three-phase networks. It’s ideal for distributing power to motors, pumps, HVAC equipment, and other 3-phase loads where dependable trip characteristics matter.

Practical installation notes

Before installation, verify that your panel supports a 3-pole, 240 V breaker of this frame size and confirm wiring requirements per local electrical codes. Maintain proper torque on mounting and connect conductors following Siemens installation guidelines. For safety and performance, schedule professional installation and testing as part of routine electrical maintenance.