KDS4BK - 400 Amp Max. Mounting Kit

KDS4BK - 400 Amp Max. Mounting Kit

Introducing the KDS4BK 3‑pole, 400‑amp circuit breaker—designed for high‑capacity electrical systems where performance and safety matter. With a compact footprint (Height 6.0″ x Width 20.0″ x Depth 3.0″), this breaker offers a space‑efficient fit while delivering full‑scale protection for commercial and industrial panels. Built on the DK / KD / HKD / KDC frame type platform, the KDS4BK rises to the challenge of modern electrical demands. Whether you’re upgrading a distribution board or specifying new equipment, this breaker gives you reliable, high‑current service with strong safety credentials.

Key Features and Benefits

• High current capacity: At 400 amperes, this breaker handles heavy loads without compromise, letting you install with confidence.
• Three‑pole configuration: Provides complete multi‑phase protection in a single device, simplifying installation and panel layout.
• Optimized dimensions: With a height of 6.0″, width of 20.0″, and depth of 3.0″, the breaker fits cleanly into many standard switchgear frames without wasted space.
• Frame compatibility: Designed for DK, KD, HKD, and KDC frame types, offering flexibility and interchangeability across equipment platforms.
• Enhanced safety and reliability: For high‑demand electrical circuits where dependable protection is essential, the KDS4BK brings you peace of mind and long service life.

Technical Specifications

• Poles: 3
• Rated Current: 400 A
• Frame Type: DK; KD; HKD; KDC
• Dimensions: Height 6.0″, Width 20.0″, Depth 3.0″
• Part Number: KDS4BK
• Applications: Multi‑phase power distribution, commercial switchgear, industrial circuits

Material Compliance and Certifications

• This circuit breaker meets or exceeds industry standards for electrical safety, durability, and performance. Manufactured to rigorous quality controls, it is suitable for installations requiring certified compliance in demanding environments. (Specific certification numbers such as UL, IEC, or CSA should be verified with the manufacturer/product sheet.)

Where It Works Best

• The KDS4BK is ideal in commercial and industrial settings where reliability and space efficiency are priorities. Typical applications include large switchgear assemblies, multi‑phase distribution panels, electrical rooms in extensive facilities, and retrofit projects upgrading older breakers to higher‑capacity units. If you’re supplying a system that must support significant electrical loads while maintaining clean installation and trusted operational performance, this breaker is a first‑choice option.