Product Overview: HertzKron HK-CDC Series Capacitor Duty Contactor

The HertzKron HK-CDC Series Capacitor Duty Contactor is a high-performance switching component specifically engineered for the demanding task of switching low-voltage power factor correction capacitors. Fully compliant with IEC/EN 60947-4-1 (Utilization Category AC-6b) and bearing CE and EAC marks, this contactor is designed to suppress extreme inrush currents, protecting both the capacitor bank and the electrical network from transient damage.

Engineering Logic & Core Advantages

⚡ Dynamic Inrush Current Suppression

The primary challenge in capacitor switching is the massive inrush current, which can exceed 100 times the rated current. The HertzKron HK-CDC Series features a specialized auxiliary contact block that engages before the main contacts. This pre-tap circuit forces the initial surge through high-precision damping resistors, reducing the peak current by up to 70% and significantly extending the lifespan of your PFC (Power Factor Correction) system.

💎 Metallurgical Superiority: High-Percentage Silver Alloy Contacts

The electrical durability of a contactor is defined by its contact material. We utilize a specialized Silver-Tin Oxide (AgSnO2) alloy for our primary contacts. This material offers exceptional anti-welding properties and low contact resistance, ensuring stable performance across tens of thousands of switching cycles, even under the thermal stress of harmonic-rich environments.

🔥 Advanced V0-Grade Flame Retardant Housing

Safety is non-negotiable in industrial switchgear. Our HK-CDC contactor is encased in a high-strength, V0-grade flame retardant polymer. This ensures superior dielectric strength and prevents housing deformation or combustion under abnormal electrical conditions, meeting the strictest global safety protocols.

Essential Technical Specifications

• Brand: HertzKron

• Series Model: HK-CDC Series (Optimized for Capacitor Switching)

• Rated Operational Voltage (Ue): 220V, 380V, 400V, 440V, 690V AC

• Rated Insulation Voltage (Ui): 1000V (Enhanced safety margin against grid fluctuations)

• Rated Frequency: 50/60Hz Adaptive

• Utilization Category: AC-6b (Dedicated for capacitor switching)

• Control Coil Voltage (Us): 110V, 220V, 380V AC (Customizable upon request)

• Model Selection & Capacity (@400V):

  • HertzKron HK-CDC-25: 25A | 12.5 kvar

  • HertzKron HK-CDC-32: 32A | 20.0 kvar

  • HertzKron HK-CDC-43: 43A | 25.0 kvar

  • HertzKron HK-CDC-63: 63A | 33.3 kvar

  • HertzKron HK-CDC-95: 95A | 50.0 kvar

  • HertzKron HK-CDC-115: 115A | 60.0 kvar

  • HertzKron HK-CDC-150: 150A | 75.0 kvar

• Mechanical Life: ≥ 1,000,000 operations

• Electrical Life: ≥ 100,000 operations

• Protection Rating: IP20 Finger-safe terminals

• Mounting: 35mm DIN Rail or Screw Mounting (M4/M5)

International Compliance & Certifications

Engineered for global export and high-spec industrial bids, the HertzKron HK-CDC series fully complies with the following international standards:

• CE Marked: Compliant with Low Voltage Directive (LVD)

• EAC Certified: Approved for Eurasian Customs Union markets

• IEC Standard: IEC 60947-4-1

• EN Standard: EN 60947-4-1

• Environmental: RoHS 2.0 Certified & REACH Compliant

Applications

• Automatic Power Factor Correction (APFC) Cabinets

• Industrial Centralized Reactive Power Compensation Systems

• Distributed Compensation for Large Electric Motors

• Infrastructure & Commercial Building Power Distribution Panels