Capacitor Switching Contactors for Power Factor Correction

Every unit’s damping resistor value is strictly measured prior to final inspection. We ensure tolerances are precise; any deviation risks allowing inrush current to impact the main contacts during energization—the exact failure mode that our AC-6b rating is engineered to prevent.

Our auxiliary early-make contacts are calibrated to close before the main contacts and open only after main contact de-energization. KRIPAL verifies this critical timing sequence on every batch using oscilloscope-captured sequencing—a rigorous testing standard rarely performed on general-purpose contactor lines.

Instead of using simulated resistive loads, our batch samples are tested by switching actual capacitor banks at rated kvar and voltage. This ensures the contactor, damping resistors, and early-make mechanism function as a cohesive, high-performance system under real-world PFC conditions.

When designing automatic PFC panels with 6 to 12 switching stages, sourcing exclusively from KRIPAL ensures uniform early-make timing and consistent damping resistor characteristics. This uniformity significantly simplifies both your PFC controller’s switching logic and ongoing fault diagnostics.

For large-scale retrofit projects spanning multiple sites or substations, KRIPAL offers warehousing services. We release finished products aligned with your specific installation schedule, helping you mitigate on-site storage costs and reduce theft risks at construction sites.

Our application engineers review your capacitor bank specifications before production to confirm correct sizing against AC-6b utilization category requirements. This proactive approach helps identify potential misapplications before shipment, preventing costly failures in the field.

We support your brand identity by offering laser-marking for your company’s part numbers, kvar ratings, and logo. KRIPAL’s branding remains discreet, ensuring your panels are presented to end-users and maintenance contractors as your own.

In the event of a field failure, our engineers perform a thorough root-cause analysis on the returned unit. We share these findings with your technical team to definitively determine whether the issue stems from misapplication, system faults, or manufacturing defects, ensuring targeted and effective corrective actions.