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
