ENTES Capacitor Duty Contactors

• Auxiiliary Contact Block - Inrush Current Limiting resistor
• Three Phase Connection - 230VAC (L-N) Coil Voltage
• Possibility to connect power capacitors
• Long Electrical life - Expected 100,000 Switching Cycles

ENT.KT Series Capacitor Switching Contactor are two-stage contactors engineered specifically to address and mitigate high inrush currents, a common challenge in power factor correction systems. These specialized contactors are equipped with an auxiliary contact block that intelligently transmits the inrush current through damping resistors during the initial energization phase. By doing so, they effectively reduce the surge of electrical current that typically occurs when capacitors are switched on, keeping the excess current within acceptable and safe limits. This ensures a smoother and safer power transition, ultimately contributing to the long-term performance and stability of the system. Particularly in the 2.5 and 5 kVAr models, ENT-KT contactors are constructed with a special reinforced contact alloy that delivers enhanced durability and resistance against repeated high inrush currents. This advanced material selection ensures that the contact points do not degrade quickly under stress, thereby extending the operational life of the contactor and enhancing the overall reliability of the power factor correction system. ENT-KT contactors offer a robust and dependable solution for efficient capacitor switching in industrial and commercial power systems.

The innovative features of ENT-KT capacitor duty contactors contribute significantly to the overall efficiency and reliability of power systems. One of the most notable benefits is the improvement in contact life. Because inrush currents are effectively managed, the mechanical and electrical wear on the contact points is significantly reduced, extending the life of the contactor. Additionally, the controlled switching mechanism reduces the risk of power factor correction errors, which in turn lowers the chance of reactive energy penalties commonly imposed by utility providers. This contributes to cost savings and improved compliance with power quality regulations. Furthermore, ENT-KT contactors help to decrease the occurrence of capacitor faults. By mitigating electrical stress during capacitor energization, the overall health and lifespan of the capacitors are preserved. This also leads to improved energy quality, as voltage fluctuations often caused by unregulated switching are minimized. Consistent voltage levels contribute to the stable operation of connected equipment and minimize disruptions. As a result of all these benefits, the maintenance interval for power factor correction systems is extended. Since both planned and unplanned maintenance needs are reduced, facilities experience fewer unexpected fault conditions. This reliability translates to reduced unplanned production stops, ensuring higher uptime and improved operational continuity. ENT-KT contactors thus represent a smart investment for businesses aiming to enhance energy efficiency, protect their electrical infrastructure, and reduce operational risks.