Westinghouse | HKD3400K | Circuit Breaker | 400A | 3-Pole | 600V | 65kA | Feed-Through

The Westinghouse HKD3400K circuit breaker is a robust, feed-through protection device designed for demanding electrical environments. With a 400 A rating across a 3-pole configuration and a 600 V operating range, this breaker delivers dependable overcurrent protection for three-phase systems while simplifying downstream wiring through its feed-through design. Built to meet maintenance, retrofit, and replacement needs where the specs align, the HKD3400K is a reliable choice for upgrading legacy panels or expanding power distribution.

Why the Westinghouse HKD3400K stands out

• High-capacity protection: 400 A current rating paired with a 3-pole configuration supports standard 3-phase distribution, making it suitable for mid-to-large electrical loads.
• Heavy-duty fault tolerance: 65 kA interrupting capability helps safeguard equipment and personnel in environments with high fault currents.
• Feed-through design for streamlined wiring: The feed-through configuration facilitates easier conductor routing and modular expansion within panels, reducing installation time and complexity.
• Versatile installation context: Ideal for maintenance, retrofit, and replacement projects where exact spec matching ensures compatibility and reliable operation.
• Brand-backed reliability: Westinghouse engineering and quality standards provide long-term performance in commercial and industrial settings.

Key specifications at a glance

• Amperage: 400 A
• Poles: 3-Pole
• Voltage: 600 V
• Interrupting rating: 65 kA
• Configuration: Feed-Through
• Part reference: HKD3400K

Ideal use cases

• Upgrading or replacing aging or undersized breakers in commercial or light industrial panels that require 3-phase protection.
• Retrofit projects where a matching 400 A, 3-pole, 600 V feed-through breaker is needed to maintain system integrity.
• Panel extensions and downstream distribution runs that benefit from a feed-through design to simplify wiring layouts.
• Electrical rooms and equipment rooms in manufacturing facilities, data centers, or large offices where reliable fault protection is critical.

Installation and compatibility notes

Before ordering, verify fit and ratings to ensure seamless integration with your panel. The HKD3400K is specified by its part number, which remains the most reliable reference for compatibility in replacement and retrofit projects. For best results, match this device to your existing Westinghouse or compatible distribution panel and confirm that the 400 A, 3-pole, 600 V, and 65 kA ratings align with your system requirements.