▌Online integrated Soft Starter Advanced Features:
Smooth Start, No Inrush Current, Protecting Motors and Mechanical Equipment
Constant Current Start, with Current Closed-Loop Control for Precise Control of Starting Current
Reduced Voltage Fluctuations, Improved Power Grid Quality
Simple Structure, Easy Installation and Maintenance
▌Online integrated Soft Starter Characteristics:
Intuitive Display:
Features a large LCD screen that displays feedback in multiple languages and tracks motor condition.
Advanced Control:
Offers advanced start and stop control functions with intuitive programming.
Comprehensive Monitoring:
Provides extensive performance monitoring and error records, including real-time metering display and 99 event logs with time-stamped operation and performance details.
Enhanced Performance:
Compared to bypass soft starters with external AC contactors, this series offers a 3x performance improvement, 2.6x better heat dissipation, 25% increased safety, and 20% improved energy efficiency. It boasts a lifespan exceeding 100,000 cycles.
Remote Control:
A remote-mounted operation keypad can be easily installed on the front of a control panel, facilitating centralized control of multiple soft starters in a single cabinet.
Plug-in Terminal Blocks:
Easy installation and maintenance with plug-in control terminal blocks. Simply remove and reinsert the terminal blocks after connecting the wires.
▌Protection Function:
Phase Loss Protection:
When any one of the three phases is open-circuited, the protection action time is less than 1 minute.
Phase Imbalance Protection:
When the three-phase imbalance K1 or K2 is greater than 10%, the protection action time is less than 10 minutes.
Over current Protection:
When the motor is stalled, the protector operates with a delay of (±1s).
Over voltage Protection:
When the power supply voltage Ue > 120%, the protection action time is less than 1 second.
Under voltage Protection:
When the power supply voltage is (60%-75%) Ue, the protection action time is less than 60 seconds.
Reset Function:
Manual reset via the stop button.
Over temperature Protection:
When the soft starter operates at an excessive temperature, the soft starter will automatically shut down and report a soft start overheat fault.
▌Application Range:
Fluid Handling (Pumps & Fans):
Used in water treatment, HVAC, and industrial ventilation to minimize mechanical stress and improve energy efficiency during startup.
Material Transport (Conveyors & Belt Drives):
Ensures gradual motor speed increase, reducing equipment wear and enhancing operational efficiency.
Compression Systems (Compressors):
Reduces inrush current and mechanical stress in air conditioning, refrigeration, and industrial compressor applications.
Mixing & Agitation (Mixers & Agitators):
Provides smooth, controlled startups in food processing, chemical facilities, and wastewater treatment, minimizing vibration and improving efficiency.
Size Reduction (Crushers & Mills):
Used in mining, cement, and aggregate processing to decrease mechanical stress and enhance energy efficiency.
▌Environmental requirements:
If the altitude exceeds 1000 meters, the capacity should be reduced accordingly. For every 100 meters increase above 1000 meters, the current should be reduced by 0.5%; The relative humidity should not exceed 95% when the ambient temperature is between -10 ℃ and+40 ℃; No condensation, no flammable and explosive gases, no conductive dust, in a well ventilated indoor environment
| Item | item | Item Description |
| Input Power Supply | Input Voltage | Three Phase 380V-15% ~ 415+10% 50/60Hz |
| Adaptive Motor | Squirrel-cage three-phase asynchronous motor | |
| Starting Times | It is recommended not to exceed 50 times per hour. | |
| Control Mode | Control Mode | 1) Operation panel control; |
| 2) Operation panel + external control; | ||
| 3) External control; | ||
| 4) External control + COM control; | ||
| 5) Operation panel + external + COM control; | ||
| 6) Operation panel + COM control; | ||
| 7) COM control; | ||
| 8) No start or stop operation. | ||
| Start Mode | 1) Current-limiting start; | |
| 2) Voltage ramp start; | ||
| 3) Kick start + current-limiting start; | ||
| 4) Kick start + voltage ramp start; | ||
| 5) Current ramp start; | ||
| 6) Voltage current-limiting double closed-loop start. | ||
| Stop Mode | 1) Soft stop; | |
| 2) Free stop. | ||
| Protective Function | 1)Open loop protection for external instantaneous stop terminals; | |
| 2) Over-heat protection for soft starter; | ||
| 3) Protection for too long starting time; | ||
| 4) Input open phase protection; | ||
| 5) Output open phase protection; | ||
| 6) Unbalanced three-phase protection; | ||
| 7) starting over current protection; | ||
| 8) Running overload protection; | ||
| 9) Under voltage protection for power voltage; | ||
| 10) Over voltage protection for power voltage; | ||
| 11) Protection for fault parameter setting; | ||
| 12) Load short circuit protection; | ||
| 13) Auto restart or incorrect wiring protection; | ||
| 14) Incorrect wiring protection of external control stop terminals. | ||
| Ambient Structure | Place to be used | Indoor location with good ventilation free from corrosive gas and conductive dust. |
| Altitude | Below 3000M. It have to rise the rate power when the altitude is more than 3000M. | |
| Ambient Temperature | -30~+55ºC | |
| Ambient Humidity | ≤90%RH without dew condensation. | |
| Vibration | <0.5G | |
| Protection Class | IP20 | |
| Cooling Pattern | Natural wind cooling. |

| Model No# | Rated Current | Maximum Adaptable Motor Power | Circuit Breaker | Main Wiring Specifications | |
| (A) | (KW) | Model | |||
| PQZR8-SZ11-T4 | 22 | 11 | NXB-40 | 10mm2 | Copper wire |
| PQZR8-SZ15-T4 | 30 | 15 | NXB-40 | 10mm2 | Copper wire |
| PQZR8-SZ18.5-T4 | 37 | 18.5 | NXB-50 | 10mm2 | Copper wire |
| PQZR8-SZ22-T4 | 45 | 22 | NXB-63 | 16mm2 | Copper wire |
| PQZR8-SZ30-T4 | 60 | 30 | NXB-80 | 25mm2 | Copper wire |
| PQZR8-SZ37-T4 | 76 | 37 | NXB-100 | 35mm2 | Copper wire |
| PQZR8-SZ45-T4 | 90 | 45 | NXB-125 | 35mm2 | Copper wire |
| PQZR8-SZ55-T4 | 112 | 55 | NXB-160S | 35mm2 | Copper wire |
| PQZR8-SZ75-T4 | 150 | 75 | NXB-180S | 50mm2 | Copper wire |
| PQZR8-SZ90-T4 | 180 | 93 | NXB-200S | 30×3 | Copper busbar |
| PQZR8-SZ110-T4 | 220 | 110 | NXB-250S | 30×3 | Copper busbar |
| PQZR8-SZ132-T4 | 260 | 132 | NXB-315S | 30×4 | Copper busbar |
| PQZR8-SZ160-T4 | 320 | 160 | NXB-350H | 30×4 | Copper busbar |
| PQZR8-SZ185-T4 | 370 | 185 | NXB-400H | 40×4 | Copper busbar |
| PQZR8-SZ200-T4 | 400 | 200 | NXB-500S | 40×4 | Copper busbar |
| PQZR8-SZ220-T4 | 440 | 220 | NXB-500H | 40×4 | Copper busbar |
| PQZR8-SZ250-T4 | 500 | 250 | NXB-630S | 40×4 | Copper busbar |
| PQZR8-SZ280-T4 | 560 | 280 | NXB-630H | 40×4 | Copper busbar |
| PQZR8-SZ315-T4 | 630 | 315 | NXB-700H | 40×5 | Copper busbar |
| PQZR8-SZ350-T4 | 700 | 350 | NXB-800H | 40×6 | Copper busbar |
| PQZR8-SZ400-T4 | 800 | 400 | NXB-1000S | 40×6 | Copper busbar |
| PQZR8-SZ450-T4 | 900 | 450 | NXB-1250S | 40×8 | Copper busbar |
| PQZR8-SZ500-T4 | 1000 | 500 | NXB-1600S | 40×8 | Copper busbar |
| PQZR8-SZ630-T4 | 1200 | 630 | NXB-2000S | 40×8 | Copper busbar |
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