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high-current AC contactor
AC contactor
contactor

High-Current AC Contactor ZHCt Series from China Suppliers & Factory - Up to 1400A, 1000V, 50/60Hz

The ZHCt direct-acting AC contactor is an essential component in electrical power systems, designed for frequencies of 50Hz (or 60Hz) and capable of handling rated working voltages of up to 1000V and currents reaching 1400A. This versatile contactor is ideal for remote circuit connections and disconnections, as well as for the starting, stopping, reversing, and reverse connection of brake motors, Manufactured in accordance with the standards GB/T14048.4-2020, IEC60947-1 (1999), and IEC947-4-1, our ZHCt contactors come in a range of 12 specifications, including ZHCt-120, 150, 185, 225, 265, 330, 400, 500, 630, 780, 1200, and 1400. The outline and installation dimensions of this series match those of the popular LC1-D and LC1-F models, Additionally, the ZHCt-120-780 models are compatible for use as DC contactors. As a leading China supplier and manufacturer, our factory ensures high-quality and reliable products to meet your industrial needs. For more information, please contact our team
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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

    Type and meaning designation chart

    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 puling out by pressing the button and thus for easy repair.
    • The are extinguishing chamber is made of high-strength plastic, which has high mechanical strength and good are 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 alone 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 ~630contactors 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 (V) 1000
    Conventional thermal current (A) 200 250 275 315 350 450 500 700 800 800
    Working current under the use category of AC-3 (A) 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 (kW) 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.
    Outline and installation dimensions diagram
    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 (FAQ)
    Can the products be customized for specific applications?
    Yes, all products of the company can be fully customized for production according to the user's specific usage scenarios.
    What are the structural features of the contactor coils?
    The coil is packaged in plastic with advanced technology, presenting a beautiful appearance, good insulation strength, and high mechanical strength. For models ZHCt-120~780-1200-1400, the coil and static iron core form a drawer structure that allows pushing in and pulling out by pressing a button, ensuring easy maintenance.
    How are the auxiliary contacts installed on these contactors?
    The auxiliary contactor sets are installed easily along the guide rail without needing screws—simply push until you hear a click. For ZHCt-120~780~1200~1400 contactors, up to two auxiliary contactor sets (8 pairs of auxiliary contactors) can be additionally installed.
    What is the action performance and coil control voltage for the ZHCt series?
    The pull-in voltage is 85%~110% Us. The release voltage is 20%~75% Us for AC coils and 10%~75% Us for DC coils. The standard coil control voltage ranges from AC 127, 220, 380V to DC 110, 220V, and coils of other voltages can also be provided.
    What kind of short circuit protection is recommended for these contactors?
    It is recommended to use the NT series fuse as short circuit protection for the contactors.
    How does the mechanical interlocking system work?
    The mechanical interlocking is simple and reliable. Two contactors can be interlocked horizontally. Additionally, ZHCt-120~630 contactors can realize vertical interlocking between two contactors, as well as vertical interlocking among three contactors.

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