CHINT NJR5-ZX Online Soft Starter

CHINT NJR5-ZX Online Soft Starter,
is an intelligent motor control device designe for smooth and energy-efficient starting and stopping of three-phase AC motors.
Featuring built-in bypass contactors, LCD digital display,
and advance protection functions, it offers reliable performance in industrial environments.
Ideal for pumps, fans, conveyors, and compressors, the NJR5-ZX ensures reduced mechanical stress,
extended motor life, and seamless operation in automated systems.

• Standards compliance: IEC 60947-4-2 / GB 14048.6
• Rated operating voltage: 380 V AC ±15%, 50/60 Hz ±2%
• Applicable motor type: Three-phase squirrel cage induction motor
• Power range: 5.5 kW – 630 kW
• Rated current range: 12 A – 1200 A
• Control method: On-line type (integrated bypass contactor, continuous operation)
• Start modes available:
  • Current limiting start
  • Voltage ramp start
  • Dual closed-loop start
  • Kick voltage start
  • Step voltage start
• Stop modes: Soft stop / Free stop
• Starting current: Adjustable 1.5–5 × In
• Starting time: 1–60 s adjustable
• Soft stop time: 0–60 s adjustable
• Kickstart voltage/time: 30–70% Ue / 0.1–1 s adjustable
• Cooling method: Intelligent fan cooling
• Display: LCD digital display with LED indicators
• Control inputs: Start, Stop, Reset, and programmable input terminals
• Relay outputs:
  • Main bypass output
  • Programmable relay (5A / 250V AC)
  • Fault relay output
  • Analog output: 0–20 mA (current monitoring)
• Communication interface: RS485 (Modbus RTU protocol)
• Protection functions:
  • Overload protection
  • Phase loss and imbalance detection
  • Short-circuit and overcurrent protection
  • Overvoltage / undervoltage protection
  • Bypass fault and starting timeout protection
• Cooling type: Intelligent forced air
• Enclosure protection level: IP20
• Operating temperature: −25 °C to +55 °C
• Storage temperature: −30 °C to +70 °C
• Altitude limit: ≤ 2000 m (derate 1% per 100 m above)
• Humidity: ≤ 95% RH (non-condensing)
• Installation method: Wall-mounted or panel-mounted
• Housing material: High-strength flame-retardant polycarbonate
• Mechanical life: ≥ 1 million operations