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NJR2-ZX On-line Soft-Starter

NJR2-ZX On-line Soft-Starter

NJR2-ZX On-line Soft-Starter

NJR2-ZX On-line Soft-Starter

NJR2-ZX On-line Soft-Starter

NJR2-ZX On-line Soft-Starter

The CHINT NJR2-ZX On-line Soft-Starter offers intelligent, space-saving motor control with advanced digital soft-starting technology. It enables smooth acceleration and deceleration, protecting motors and extending equipment lifespan. Featuring multiple starting modes, RS485 communication, and built-in overload and fault diagnostics, this on-line soft-starter is ideal for industrial automation, HVAC, pumps, and conveyor systems, ensuring stable and efficient motor operation.

Product Information

Standards compliance: IEC 60947-4-2 / GB 14048.6
Rated operating voltage: 380 V AC, three-phase
Rated control voltage: 24 V DC (control circuit)
Control method: On-line type, does not require bypass contactor
Rated current range: 180 A – 640 A (depending on model)
Applicable motor power: 45 kW – 160 kW
Model options:
- NJR2-45T (180 A / 45 kW)
- NJR2-55T (220 A / 55 kW)
- NJR2-75T (300 A / 75 kW)
- NJR2-90T (360 A / 90 kW)
- NJR2-110T (440 A / 110 kW)
- NJR2-132T (528 A / 132 kW)
- NJR2-160T (640 A / 160 kW)
Display: Large dual-language LCD with removable keyboard
Analog output: 0–20 mA (for current monitoring)
Digital communication: RS485 (Modbus RTU, optional module required)
Relay outputs:
- K1 – Full voltage output relay (5 A / 250 V AC)
- K2 – Custom programmable relay (5 A / 250 V AC)
- K3 – Fault relay output (5 A / 250 V AC)
- Control terminals: Two-wire and three-wire control options
Built-in protection functions:
- Overload and phase failure
- Phase imbalance
- Load short circuit
- Current limiting and timeout
- Over-voltage / under-voltage
- Input / output phase loss
- Bypass and fault alarms
Starting modes:
- Voltage ramp start
- Current limiting start
- Kick voltage + current limit start
- Dual closed-loop start
- Kick voltage + voltage limiting start
Display functions: Operating voltage/current display, fault code and memory
Communication: RS485 networking for remote control and monitoring
Operating temperature: −25 °C to +55 °C
Cooling method: Natural air cooling
Mounting type: Wall-mounted / panel installation
Material: Patented aluminum housing for heat dissipation
Weight: 20–25 kg (depending on model)
Protection degree: IP20

Name

Size

Release time

Operate

NJR2-ZX-Soft Starter-Catalog.pdf

1.42MB

2025-03-25

Download

Name

Size

Release time

Operate

2407-NJR2-ZX-Soft Starter-Manual.pdf

10.57MB

2025-03-25

Download

1810-NJR2-ZX-Soft Starter-Manual.pdf

10.6MB

2024-09-24

Download

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FAQs

What is the NJR2-ZX On-line Soft-Starter used for?

It provides controlled motor startup and shutdown, reducing mechanical stress and extending the life of pumps, fans, compressors, and conveyor systems.

What makes it an “on-line” soft-starter?

It can operate continuously without a bypass contactor, simplifying wiring and saving panel space.

What communication options does it offer?

It includes RS485 communication (optional module) for integration into automated control networks using the Modbus RTU protocol.

What are the available starting modes?

The NJR2-ZX offers voltage ramp, current limiting, dual closed-loop, and kick-voltage starting modes for flexible motor control.

How does it enhance system protection?

It features comprehensive protection functions against overload, phase loss, current imbalance, short circuits, and over-/under-voltage to ensure safe and reliable motor operation.