Square D | KCB34125 | Circuit Breaker | 125A | 3-Pole | 480V

The Square D KCB34125 Circuit Breaker is a 125A, 3-Pole unit designed for demanding 480V three-phase applications. Built for maintenance, retrofit, and replacement projects, this breaker ensures reliable protection where exact specifications matter.

Key specifications at a glance

• Amperage: 125A
• Poles: 3-Pole
• Voltage rating: 480V
• Part number: KCB34125

Why it matters for your project

• Designed for three-phase distribution, ensuring coordinated protection across all three lines in your 480V system.
• An ideal choice for service crews performing routine maintenance, panel retrofits, or replacement of worn or obsolete breakers where the exact KCB34125 specification is required.
• The best reference for compatibility is the part number itself—KCB34125—so verify this exact model against your panel labeling and documentation before ordering to avoid downtime.

Who benefits most

• Facilities managers and maintenance technicians working in industrial or commercial environments with 480V three-phase feeds.
• Electrical contractors performing panel upgrades or retrofits that demand precise breaker specifications.
• Service teams keeping a targeted spare parts inventory for quick, accurate field replacements.

Practical notes for installation and use

• Confirm panel compatibility by matching the exact part number (KCB34125) and reviewing your panel’s rated voltage and pole configuration.
• Use this breaker in applications where a 125A rating matches the fault-current and load profile of your 480V three-phase circuit.
• Keep in mind that compatibility can depend on the panel model and bus arrangement, so always cross-reference with the panel’s documentation before purchase.

With the Square D KCB34125, you gain a trusted, purpose-built solution for maintaining uninterrupted 480V three-phase service. It’s a practical, precise choice for professionals who value exact-fit replacements and dependable electrical protection in demanding environments.