Siemens HFK3B250 Circuit Breaker, 250A, 3-Pole, 480V

Engineered for rugged industrial power systems, the Siemens HFK3B250 Circuit Breaker delivers reliable overcurrent protection for 480V three-phase networks. Rated for 250 A and configured as a 3-pole device, this breaker is built to guard motors, feeders, and distribution panels in demanding environments.

Key specifications

• Manufacturer: Siemens
• Part Number: HFK3B250
• Product Type: Circuit Breaker
• Amperage: 250 A
• Poles: 3
• Voltage: 480 V

Why this 3-pole, 480V breaker is a smart fit

In three-phase industrial power systems, a 3-pole breaker like the HFK3B250 provides synchronized protection across all live legs, preventing phase-to-phase faults from affecting equipment and personnel. Its 480V rating makes it suitable for distribution panels, motor control centers, and line-side protection in facilities that rely on high-efficiency three-phase power.

Ideal use cases

• New installations requiring robust 250 A protection for 3-phase 480 V feeders
• Panel replacement projects where compatibility with Siemens breakers is important
• Maintenance shut-downs and service upgrades on manufacturing lines, HVAC systems, and heavy machinery
• Emergency protection upgrades in warehouses and distribution centers with 480 V power

What makes it stand out

• Part-number verified compatibility: HFK3B250 is the definitive reference for fitment in compatible Siemens panels and application requirements
• Clear, quick-tripping for safe fault clearance across all three phases
• Designed for industrial duty with reliable performance in variable loads and frequent cycling
• Streamlined maintenance: standardization across your fleet simplifies stocking and service

Compatibility and quick confirmation

To ensure a flawless fit, verify the part number—HFK3B250—and review your application requirements. If you need a hand confirming compatibility with your panel model or distribution setup, send us a message and we’ll help determine the right fit for your 480V, 3-phase system.

Installation and safety reminders

Disconnect power before servicing, follow Siemens installation instructions, and use appropriate PPE. Ensure proper torque on terminals and respect enclosure clearances to maintain safe, reliable operation.