Eaton Cutler-Hammer KYK3 125A 3P 600V Circuit Breaker | AmpState

Eaton Cutler-Hammer KYK3 is a dependable circuit breaker designed for panelboards, load centers, and electrical distribution systems. With a focus on retrofit projects and maintenance planning, this 3-pole unit keeps your critical circuits protected while preserving the exact part number used in your installations.

Key specifications

• Amperage: 125 A
• Poles: 3 (three-pole)
• Voltage rating: 600 V
• Manufacturer: Eaton Cutler-Hammer
• Part number: KYK3

Why this KYK3 circuit breaker stands out

Designed for reliability in electrical distribution, the KYK3 is a proven choice when your system requires consistent protection across three phases. Its compatibility with established panelboards and load centers makes it a practical, long-term solution for upgrades and maintenance where the exact part number must be retained.

Ideal use cases

• Retrofit projects that require staying on a known KYK3 part number to minimize downtime and maintain wiring diagrams.
• Maintenance planning for facilities with three-phase distribution up to 600 V.
• Replacement in existing Eaton Cutler-Hammer installations to ensure seamless compatibility with current bus designs and mounting.

Practical benefits

• Streamlines replacements in equipment racks and switchgear by preserving the exact form factor and mounting footprint.
• Supports organized inventory management for maintenance teams by sticking with a familiar part number.
• Engenders confidence with a trusted brand known for durable protection in commercial and industrial environments.

Available from AmpState, the KYK3 is positioned to support quick sourcing and dependable supply when timelines matter. Need help matching a part number or confirming compatibility? Message us and we’ll help you confirm fit.