Westinghouse | HKB3100 | Circuit Breaker | 3-Pole

Westinghouse HKB3100 is a 3-Pole circuit breaker engineered for maintenance, retrofit, and replacement projects where exact compatibility matters. With the part number HKB3100 serving as your most reliable reference, this unit delivers dependable overcurrent protection for 3‑phase electrical systems.

The 3‑pole design ensures all three hot legs disconnect together, preserving safety and proper trip coordination within your panel. Before ordering, verify that this breaker matches your panel’s specifications in terms of fit and ratings to ensure seamless installation and reliable protection.

• Best compatibility reference: The part number HKB3100 is your strongest indicator for compatibility with Westinghouse panels and assemblies.
• Three-pole protection: Designed to manage three hot conductors in 3‑phase configurations, supporting proper isolation and safety.
• Ideal for maintenance, retrofit, and replacement: A practical choice when upgrading aging panels or restoring circuit protection in supported systems.
• Check ratings before purchase: Confirm voltage, current rating, and interrupting capacity align with your panel’s requirements.
• Safe installation guidance: Ensure power is fully off and consult a licensed electrician if you’re unsure about compatibility or wiring.

Who this is for

• Electrical technicians performing panel maintenance or upgrades in commercial or industrial environments
• Facility managers seeking reliable, compatible replacement parts for existing Westinghouse panels
• Contractors conducting retrofit projects that require precise part references to minimize downtime

Use scenarios

• Replacing a worn-out 3‑pole breaker in a 3‑phase panel where the HKB3100’s specifications match the original equipment
• Upgrading legacy switchgear to a compatible Westinghouse component to restore protected circuit performance
• Maintaining system safety during panel refurbishment by swapping in a like-for-like 3‑pole unit

Practical tips for the buying process

• Cross-check the panel model and the breaker’s trip characteristics against your existing setup to ensure proper coordination
• Keep the part number handy as the primary reference point for compatibility searches and ordering
• Document the panel’s voltage and current requirements to confirm the HKB3100’s suitability before purchase