Square D KHP361251021 125A 600 V Circuit Breaker Potential Transformer

Meet the Square D KHP361251021, a compact, integrated protection solution that blends a 125 A circuit breaker with a potential transformer in a single robust assembly. Built for demanding medium‑voltage environments, this unit delivers reliable overcurrent protection while providing precise voltage sensing for protective relays and monitoring systems.

• Current rating: 125 A
• Voltage rating: 600 V
• Part number: KHP361251021
• Integrated protection: combines circuit-breaking capability with a potential transformer to deliver accurate voltage sensing for relay protection and metering
• Compact footprint: designed to streamline installation in switchgear and distribution panels
• Durable construction: engineered for reliable performance in industrial environments
• Ideal use cases: motor control centers, distribution panels, and switchgear assemblies in commercial, industrial, and utility settings

Why choose this integrated unit? By combining a circuit breaker and a potential transformer, you reduce wiring complexity and simplify maintenance. The accurate voltage sensing supports relay protection and precise metering, helping you detect overcurrent and voltage anomalies quickly, minimize downtime, and extend the life of feeders and transformers.

Practical deployment tips: ensure compatibility with your Square D panel or switchgear, verify the transformer ratio aligns with your protection relay requirements, and schedule periodic checks of the transformer health and relay connections to maintain optimal protection performance.