Product Overview: HertzKron CJ19 Series Capacitor Duty Contactor

The HertzKron CJ19 Series Capacitor Duty Contactor is a high-performance switching component specifically engineered for the demanding task of switching low-voltage power factor correction capacitors. Compliant with IEC 60947-4-1 (Utilization Category AC-6b) and bearing the CE Mark, 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 Capacitor Duty Contactor 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 Capacitor Duty 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

Product Type and Standard Compliance Designated as a Capacitor Duty Contactor (CJ19 Type), fully compliant with IEC 60947-4-1 standards for AC-6b utilization. The device is CE Certified for global market access and industrial reliability.

Operational Parameters Engineered for rated voltages including 220V, 400V, 440V, and 690V. The system supports an electrical switching life exceeding 100,000 operations under standard reactive power compensation conditions.

Physical and Material Architecture Features integrated auxiliary damping resistors for surge mitigation and high-density silver alloy contacts for optimized conductivity. The internal mechanism is housed in a reinforced flame retardant plastic chassis with high thermal stability.

The HertzKron Strategic Advantage

• Full Compliance: Meets the requirements of IEC 60947-4-1 and CE standards, ensuring smooth project approval in European and Middle Eastern markets.

• Harmonic Resilience: Engineered to operate reliably in networks with de-tuned reactors, providing the necessary thermal redundancy for harmonic-rich industrial loads.

• Precision Engineering: From the microsecond timing of the pre-tap contacts to the density of the silver alloy, every detail is optimized for the HertzKron standard of "Reliability through Physics."

• Universal Integration: Standardized mounting dimensions allow for seamless replacement of common units while providing a significant upgrade in material science and switching precision.

Technical Specifications

• Brand: Hertzkron

• Rated Operational Voltage : 220V / 380V / 400V / 440V / 690V AC

• Rated Insulation Voltage : 1000V

• Frequency: 50/60Hz Adaptive

• Utilization Category: AC-6b

• Coil Voltage ($U_s$): 110V, 220V, 380V AC

• Model Selection (@ 400V):

  • 12.5 kVar / 20 kVar / 25 kVar

  • 33.3 kVar / 50 kVar / 60 kVar

  • 75 kVar (Heavy-Duty)

• Mechanical Life: $\ge$ 1,000,000 operations

• Protection Rating: IP20 Finger-safe terminals

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

International Compliance

Engineered for global export, the Hertzkron CJ19 series meets the following international standards:

• CE 

• 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 Compensation Systems

• Distributed Compensation for Large Motors

• Infrastructure & Commercial Building Distribution