Coils

As China's premier coil manufacturer, HAIPART engineers the critical "power core" in circuit breakers' trip-close operations. Our solenoid coils deliver:

• Instantaneous response to overload/short-circuit signals

• Stable holding operation during normal conditions

• 99.6% action consistency across temperature extremes

• Custom solutions for all breaker types

"Precise Drive, Stable Operation - Reliability where milliseconds matter"

✅ Miniature Circuit Breaker (MCB) Coils

• Lightweight design for residential/commercial use

• 0.1mm-0.5mm fine enameled wire construction

• ≤20ms trip response at 1.2x rated voltage

• 99.6% operational consistency (-25℃ to 70℃)

✅ Molded Case Circuit Breaker (MCCB) Coils

• Industrial-grade robustness (315A-630A range)

• Multi-strand winding for vibration resistance

• Withstands 10x instantaneous current surges

• 12% reduced holding power consumption

MCB Trip Coil (16A)

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MCCB Industrial Coil (400A)

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Engineering Support

Our team provides:

• Custom coil design services

• Prototype development

• Compliance testing (IEC/UL/GB)

• Volume manufacturing

Contact HAIPART

+86-13819777367

✉️ Sales@haipart.com