The NC1-Z Series is a specialized version of the standard AC contactor, engineered with a high-efficiency DC control coil. While the main contacts manage high-power AC loads up to 690V, the "Z" designation indicates that the electromagnetic system is driven by Direct Current (DC).
This makes the NC1-Z the ideal interface between low-voltage electronic control systems (like PLCs) and high-power industrial motors. With current ratings of 65A, 80A, and 95A, these contactors are designed for heavy-duty applications where silent operation, low coil power consumption, and direct compatibility with DC control logic are required.

• High-Efficiency DC Electromagnetic System: Designed to operate with significantly lower "hold" power than AC coils. This reduces heat generation within the control panel and allows for direct drive from many industrial controllers without the need for intermediate relays.

• Superior Contact Reliability: Equipped with large-surface silver alloy contacts (AgNi or AgSnO2) that provide excellent anti-welding properties and low contact resistance, even under the high inrush currents of AC-3 motor starting.

• Silent "Hum-Free" Operation: Unlike AC-controlled contactors, DC coils do not produce the 50/60Hz vibration (humming). This makes the NC1-Z perfect for noise-sensitive environments like hospitals, offices, and telecommunication hubs.

• Integrated Auxiliary Contacts: Standard models feature a 1NO + 1NC (11) auxiliary configuration, providing immediate feedback to control systems or for use in electrical interlocking.

• Extended Service Life: The specialized DC coil design reduces mechanical wear on the core during pull-in, contributing to a mechanical life of up to 10 million operations.

1. Automation & PLC Control: Direct control of industrial motors from 24V DC PLC outputs.

2. Solar & Renewable Energy: Managing AC loads within systems powered by DC battery banks or solar arrays.

3. Electric Vehicle (EV) Infrastructure: Used in high-power charging stations where DC logic controls the AC power delivery.

4. Telecommunications: Reliable power switching in 48V DC powered data centers and base stations.

5. Battery Backup Systems: Ideal for UPS systems where the control circuit must remain functional during AC power loss.

• Full DC Coil Range: We maintain a deep stock of all DC coil voltages, especially the hard-to-find 48V DC and 110V DC variants used in specialized utility and rail sectors.

• Drop-In CHINT Compatibility: Fully interchangeable with CHINT NC1-Z original units, sharing the same footprint and terminal positions for easy field replacement.

• Enhanced Protection: Every DC coil is engineered to handle a wide range of voltage fluctuations (+85% to -110% Us) to prevent "chattering" or drop-outs.

• Global Export Quality: Units are individually inspected and packaged in high-strength cartons to ensure safe arrival for international B2B orders.

Q: Can I use an AC coil contactor with DC power?
A: No. Using DC on an AC coil will likely burn the coil out quickly because AC coils rely on inductive reactance (which isn't present in DC) to limit current. You must use a dedicated "Z" series DC coil contactor.
Q: Do these contactors require an external surge suppressor for the coil?
A: While the NC1-Z is robust, we recommend adding a flyback diode or varistor across the DC coil if you are driving it directly from a sensitive PLC output to protect against back-EMF.
Q: Is the 65A rating for resistive or inductive loads?
A: The 65A rating refers to the AC-3 (Inductive) motor load at 400V. For AC-1 (Resistive) loads, like heaters, the rating is typically higher (up to 80A-100A depending on the model).