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high-current AC contactor
AC contactor
contactor

High-Current AC Contactor ZHCt Series - China Suppliers & Factory for 50Hz/60Hz Power Systems

The ZHCt direct-acting AC contactor is a reliable solution for electrical power systems operating at frequencies of AC 50Hz or 60Hz. With a maximum rated working voltage of 1000V and a rated working current of up to 1400A, this contactor is perfect for remote circuit connection and disconnection. It also serves essential functions such as starting, stopping, reversing, and performing reverse connections for brake motors, Manufactured based on rigorous international standards including GB/T14048.4-2020, IEC60947-1(1999), and IEC947-4-1, the ZHCt series offers 12 different specifications ranging from ZHCt-120 to ZHCt-1400. The outline and installation dimensions of these contactors are consistent with those of LC1-D and LC1-F, making integration seamless for engineers and technicians, Notably, ZHCt-120 to ZHCt-780 contactors are versatile enough to be utilized as DC contactors, providing flexibility in various applications. When searching for trusted China suppliers and factories for high-quality electrical components, the ZHCt direct-acting AC contactor stands out as a top choice for efficiency and performance. For further information, please contact our company
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    Product Detail

    Advantage

    All products of the company can be customized for production according to user usage scenarios.

    Type and meaning

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    Product structure characteristics

    • It has simple, compact, new and unique, with modular function and assembly modularization.
    • The coil is packaged in plastic, with advanced technology, beautiful appearance, good insulation strength and high mechanical strength.
    • For ZHCt-120~780-1200-1400, coil and static iron core form a drawer for pushing in and pulling out by pressing the button and thus for easy repair.
    • The arc extinguishing chamber is made of high-strength plastic, which has high mechanical strength and good arc extinguishing performance and is fixed by locking bar rotating compression spring, which is convenient and reliable.
    • There are many auxiliary contacts, which are replaced easily. For ZHCt-120~780~1200~1400 contactors, the coil is provided with a special auxiliary contact for DC control of self-locking conversion. It is allowed to additionally install two auxiliary contactor sets so that there are 8 pairs of auxiliary contactors. The auxiliary contactor sets are installed only along the guide rail, with no need of screws. Give it a push, when you hear a click, the auxiliary contactor sets are installed successfully. If the air damping type time relay is required, it can be used directly to replace the auxiliary contact set.
    • The contactor can save electricity significantly, ZHCt-400-780~1200-1400 features AC input and DC control.
    • The mechanical interlocking of the contactor is simple and reliable. Two contactors can be interlocked horizontally. ZHCt-120 ~630 contactors can also realize vertical interlocking of two contactors and vertical interlocking between three contactors.

    Main parameters and technical performance

    Action performance: The pull-in voltage is 85%~110% Us, the release voltage is 20%-75% Us for the AC coil, and 10%~75% Us for the DC coil.

    Coil control voltage: ZHCt-120~780~1400 AC 127, 220, 380V, DC 110, 220V, can also be used for coils of any other voltage.

    Short circuit protection: Recommended short circuit protection for contactors is NT series fuse.

    Main parameters and technical performance indicators of the contactor
    Type ZHCt-120 ZHCt-150 ZHCt-185 ZHCt-225 ZHCt-265 ZHCt-330 / ZHCt-400 ZHCt-500 ZHCt-630 ZHCt-780
    Rated insulation voltage 1000
    Conventional thermal current 200 250 275 315 350 450 / 500 700 800 800
    Working current under the use category of AC-3 380V 115 150 185 225 265 330 / 400 500 630 780
    660V 86 107 118 135 170 225 / 305 355 460 630
    1000V 46 60 71 90 100 132 / 115 200 320 312
    Control motor power under the use category of AC-3 380V 55 75 90 110 132 160 / 200 250 335 450
    660V 80 100 110 129 160 220 / 280 335 450 475
    1000V 65 65 100 100 147 160 / 185 335 450 450

    Outline and installation dimensions

    Notes: 1) M is the flashover distance; 2) F is the space required for replacement of coils.
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    Outline dimensions of ZHCt-400~500 Fig.3 & Outline and installation dimensions of ZHCt-630 Fig.4
    Type Number of poles A B C D E F G H M P S B1 Mounting Screws
    ZHCt-120 3-pole 166.5 162 171 80 113 131 137 124 40 37 15 147 M6
    4-pole 200.5 162 171 80 113 131 137 124 40 37 15 147 M6
    ZHCt-150 3-pole 166.5 172 171 80 113 131 137 124 40 40 20 150 M6
    4-pole 200.5 172 171 80 113 131 137 124 40 40 20 150 M6
    ZHCt-185 3-pole 168.5 174 181 80 113 131 137 137 40 40 20 154 M6
    4-pole 208.5 174 181 80 113 131 137 137 40 40 20 154 M6
    ZHCt-225 3-pole 168.5 197 181 80 113 131 137 137 50 48 25 172 M6
    4-pole 208.5 197 181 80 113 131 137 137 50 48 25 172 M6
    ZHCt-265 3-pole 201.5 203 213 96 113 147 145 147 50 48 25 178 M6
    4-pole 224.5 203 213 96 113 147 145 147 50 48 25 178 M6
    ZHCt-330 3-pole 213 209 219 96 113 147 145 158 60 48 25 181 M6
    4-pole 261 209 219 96 113 147 145 158 60 48 25 181 M6
    ZHCt-400 3-pole 213 209 219 80 175 119 209 158 60 48 25 181 M8
    4-pole 261 209 219 80 175 119 209 158 60 48 25 181 M8
    ZHCt-500 3-pole 233 238 232 80 175 141 209 158 70 55 30 208 M8
    4-pole 288 238 232 140 175 141 209 158 70 55 30 208 M8
    ZHCt-630 3-pole 309 225 225 180 185 181 280 202 80 40 40 264 M10
    4-pole 389 225 225 240 185 181 280 202 80 40 40 264 M10

    Frequently Asked Questions

    Can the ZHCt series contactors be customized?

    Yes, all products of the company can be customized for production according to specific user usage scenarios.

    What are the control voltage options for the contactor coils?

    The coil control voltage ranges from AC 127V, 220V, 380V to DC 110V, 220V. Coils can also be manufactured for any other required voltage.

    What is the recommended short circuit protection for these contactors?

    The recommended short circuit protection for the contactors is the NT series fuse.

    How is easy repair achieved for the ZHCt-120~780-1200-1400 models?

    For these models, the coil and the static iron core form a drawer structure. This drawer can be easily pushed in and pulled out by pressing a button, allowing for straightforward maintenance.

    What are the interlocking features of the ZHCt contactors?

    The mechanical interlocking is simple and reliable. Two contactors can be interlocked horizontally. Additionally, ZHCt-120~630 contactors can realize vertical interlocking of two contactors as well as vertical interlocking between three contactors.

    What materials are used for the arc extinguishing chamber?

    The arc extinguishing chamber is made of high-strength plastic, providing high mechanical strength and good arc extinguishing performance. It is securely fixed by a locking bar rotating compression spring.

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