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CHINT NBG-63 User Instruction
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CHINT NBG-63 User Instruction

Miniature circuit breaker
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NO:2023.08
NBG-63
Miniature Circuit Breaker
User Instruction
Standard: IEC/EN 60898-1

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Summary of Contents for CHINT NBG-63

  • Page 1 NO:2023.08 NBG-63 Miniature Circuit Breaker User Instruction Standard: IEC/EN 60898-1...

  • Page 2: Safety Warning

    Safety Warning The product can only be installed and maintained by professionals. Installation in any damp, condensed-phase environment with inflammable and explosive gas is forbidden. When the product is being installed or maintained, the power must be switched off. You are prohibited from touching the conductive part when the product is operating.

  • Page 3: Purpose Of Use

    Purpose of Use NBG-63 miniature circuit breakers are mainly used for the circuit of AC 50Hz or 60Hz with rated voltage of 240V or 415V and rated current of 63A, which provide overload and short-circuit protection and are also used as the infrequent making/breaking operation of the circuit under normal conditions.
  • Page 4 2. On-off indication Green I ON 3. Installation ① ② TH35-7.5 type mounting rail 4. Disassembly ② ①...
  • Page 5 5. Wiring: copper wires only Table 2 Copper wire cross-sectional area Rated current I Copper wire cross-sectional area S (mm ) 16, 20 40, 50 Wiringtorque 11mm 2.0 N·m 16mm 25mm...

  • Page 6: Maintenance

    Maintenance 1. Check the circuit breaker on a regular basis during operation; 2. After the circuit breaker cuts off the overload or short-circuit current, the fault should be eliminated before closing the circuit breaker. Table 3 Analysis and troubleshooting of common faults Symptoms Cause analysis Troubleshooting method...

  • Page 7: Miniature Circuit Breaker

    QC PASS NBG-63 Miniature Circuit Breaker IEC/EN 60898-1 Check 51 Test date: Please see The packing ZHEJIANG CHINT ELECTRICS CO.,LTD.
  • Page 8 NBG-63 Miniature Circuit Breaker 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...