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Feels well-built and suitable for everyday plant and maintenance use.
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circuit-breaker
Westinghouse KDB3400 400A 3P 600V Circuit Breaker | AmpState
| Part Number | KDB3400 |
| Amperes | 400 |
| Poles | 3 |
| Voltage | 600 |
| Product Type | circuit-breaker |
Regular price
$8,133.00
Sale price
$8,133.00
Regular price
Unit price
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Seamless online shopping experience guaranteed with easy shipping and returns policy.
Shop with Confidence: Our Products come with a Reliable Year-Long Warranty.
Westinghouse KDB3400 400A 3P 600V Circuit Breaker | AmpState
Regular price
$8,133.00
Sale price
$8,133.00
Regular price
Unit price
Product description
Shipping
Meet the Westinghouse KDB3400 400A 3P 600V Circuit Breaker — a reliable cornerstone for panelboards, load centers, and distributed electrical systems. Built for everyday electrical work, this unit is designed to slot into original Westinghouse installations, helping you keep the BOM aligned with the exact part number for smooth replacements and maintenance.
- 3-pole design provides balanced protection for three-phase circuits, supporting robust distribution in commercial and industrial setups.
- 400 A rating delivers strong protection for high-demand branch circuits and feeders, helping prevent overloads and unplanned downtime.
- 600V maximum rating suits a wide range of commercial and industrial electrical systems, offering dependable performance across typical installation voltages.
- Replacement-ready and BOM-friendly ideal for refurbishment projects or stocking spares that match the original part number exactly.
- Versatile fit designed for use in panelboards, load centers, and distribution panels that accommodate Westinghouse KDB3400 units; compatible with established electrical layouts to simplify upgrades.
Need help matching a part number or confirming compatibility? Message us and we’ll help you confirm the fit before you buy.
Ideal uses and scenarios
- Replacing aging breakers in commercial panelboards or industrial load centers to restore reliable protection.
- Stocking a spare that aligns with the original BOM, reducing downtime during maintenance or upgrades.
- Upgrading three-phase distribution in facilities with high electrical demand, where a 400 A, 3-pole, 600 V solution is appropriate.
- Applying a trusted Westinghouse component in new installations that require a proven, standards-aligned 3P 600V breaker.
Product specifications
- Manufacturer: Westinghouse
- Part Number: KDB3400
- Product Type: Circuit Breaker
- Amperage: 400 A
- Poles: 3
- Voltage: 600V
- Availability: AmpState
Secure the protection your three-phase system depends on with the Westinghouse KDB3400 — a purpose-built, BOM-aligned solution available from AmpState to keep your electrical distribution running smoothly.
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What Our Customers Say
General feedback we often hear from customers purchasing industrial electrical parts.
Verified
Lead time was reasonable and the part matched expectations when it arrived.
Procurement · Ontario
Verified
Good value for industrial use. Customers mention easy installation.
Service tech · Field work
