Square D | KCL241251021 | Circuit Breaker | 125A | 3-Pole | 480V

Designed for industrial power distribution, the Square D KCL241251021 Circuit Breaker delivers precise protection in 480V, three-phase systems. With a 125A rating and three poles, this unit is tailored for maintenance, retrofit, and replacement projects where exact specs matter.

Why choose the KCL241251021?

• 125 Ampacity provides reliable protection for mid‑size feeders in 480V, three‑phase panels.
• Three poles deliver true three‑phase circuit protection, essential for balanced load handling and safe shutdown.
• Part number accuracy matters: KCL241251021 is the best reference for compatibility across Square D enclosures that support the KCL family.
• Optimized for retrofit and replacement work, reducing panel modifications and downtime.
• Rugged, industrial-grade construction designed to withstand demanding electrical environments.

Key specifications at a glance

Amperage: 125A • Poles: 3‑Pole • Voltage: 480V

Ideal use cases

• Maintenance and service on existing 480V three‑phase distribution systems.
• Retrofits where a precise 125A, 3‑pole, 480V specification is required to match existing protection schemes.
• Replacement in legacy Square D installations that specify the KCL series for panel compatibility.

Practical installation and compatibility tips

• Before ordering, confirm fit and ratings against your panel labeling; the part number is the most reliable reference for compatibility.
• Keep a spare KCL241251021 on hand for planned maintenance to minimize downtime.
• When integrating into an enclosure, ensure the mounting and bus connection configuration matches the KCL series requirements.

Choosing a breaker with precise specifications helps prevent nuisance trips and ensures coordinated protection with upstream devices. The Square D KCL241251021 125A 3‑Pole 480V circuit breaker is a dependable choice for professionals maintaining or upgrading industrial power distribution networks.