CHINT NCH8 Series User Instruction

Modular ac contactor

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NO:2020.04
NCH8 Series
Modular AC Contactor
User Instruction
Standard:IEC/EN 61095

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Summary of Contents for CHINT NCH8 Series

  • Page 1 NO:2020.04 NCH8 Series Modular AC Contactor User Instruction Standard:IEC/EN 61095...
  • Page 2: Safety Warning

    Safety Warning Only professional technicians are allowed for installation and maintenance; It is strictly prohibited to install in the environment containing inflammable, explosive gas and moist condensation. Power must be turned off when installing, maintaining and maintaining the product. Do not touch the conductive part of the product during working.
  • Page 3 Purpose of Use and Range of Application NCH8 series modular AC contactor is mainly used in AC 50Hz (60Hz) power systems with rated operating voltage up to 400V and rated operating current up to 63A. The product is used as remote switch and control circuit...
  • Page 4: Installation

    NCH8 NCH8 NCH8 NCH8 NCH8 NCH8 NCH8 NCH8 Model -20 2P -20 4P -25 2P -25 4P -40 2P -40 4P -63 2P -63 4P Coil control power 、 、 220/230 voltage Us(V) Pick-up 85% 110%Us voltage Operation range Release 20% 75%Us voltage Enclosure protection...
  • Page 5 Unit:mm Figure 1 NCH8 Unit:mm Figure 2 Installation dimensions of partition...
  • Page 6 2) Installation method: use TH35-7.5 steel mounting rail, see Figure 3 below. ① ② ③ NCH8-20~25 2P Figure 3 NCH8 installation diagram 3) Wire selection and connection method: applicable to copper wire connection, please refer to Table 3 below for wire category, sectional area, strip length and tightening torque, see Figure 4 below for connection method.
  • Page 7 Table 3 Connection requirements for copper wire Unit:mm M3.5 1~2.5 1~2.5 1~2.5 0.8N.m Model Code NCH8-20 M3.5 0.8N.m 1~2.5 1~2.5 1~2.5 NCH8-25 NCH8-40 2.0N.m 2.5~16 2.5~6 2.5~16 2.5~6 2.5~16 2.5~6 NCH8-63 Note: You can connect up to 2 wires with same type and sectional area. A2 2 4 2 R2 NCH8-20~63/20...
  • Page 8: Maintenance

    Maintenance Check the operation of the contactor every month. Method: The contactor should incline 5° forward upon picking up and 5° backward upon release; check if the contactor can operation smoothly. Conduct inspection and maintenance every month. Note: The product should not be assembled, disassembled or maintained at will.
  • Page 9 QC PASS NCH8 Series Modular AC Contactor IEC/EN 61095 Check 10 Test date: Please see the packing ZHEJIANG CHINT ELECTRICS CO., LTD.
  • Page 10 NCH8 Series Modular AC Contactor User Instruction Zhejiang Chint Electrics Co., Ltd. Add: No.1, CHINT Road, CHINT Industrial Zone,North Baixiang, Yueqing, Zhejiang 325603,P.R.China E-mail: global-sales@chint.com Website: http://en.chint.com...

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