VACON NXS00125 3-Phase AC General Purpose VFD 12A 5.5kW Sensorless Vector for High Torque AC Drive

　　VACON NXS00125-A5H1SSV-A1A2000000 is a 5.5 kW General Purpose VFD in the VACON NXS series,operating at 380–500 VAC with IP54/NEMA12 enclosure.This high torque AC drive delivers 200%starting torque and integrates a brake chopper.It controls pumps,fans,conveyors,and mixers,conforming to IEC 61800-3 EMC standards with an alpha-numeric panel.

　　What Is a General Purpose VFD?

　　A General Purpose Variable Frequency Drive(VFD)is an electronic motor controller that converts fixed-frequency AC input power into variable-frequency,variable-voltage output to regulate the speed and torque of three-phase AC induction motors.By matching motor speed to actual load demands,these drives achieve energy savings of 20%to 50%on variable torque applications.

　　General purpose VFDs support pumps,fans,conveyors,compressors,and mixers.They typically offer dual overload ratings:low overload(110%for 1 minute per 10 minutes)for variable torque loads and high overload(150%for 1 minute per 10 minutes)for constant torque machinery.A high torque AC drive within this class further sustains 150%to 200%of rated torque during breakaway and low-speed operation,eliminating the need to oversize the drive for heavy starting conditions.

　　The NXS00125-A5H1SSV-A1A2000000 is a member of the VACON NXS product family,which spans 0.75 kW to 560 kW and voltages from 208 V to 690 V.This unit provides 5.5 kW with a 12 A rated output current,equipped with an integrated brake chopper,IP54/NEMA12 protection,and conformal coated boards for harsh environments.

　　Key Specifications

　　Brand:Danfoss/VACON

　　Model:NXS00125-A5H1SSV-A1A2000000

　　Product Family:VACON NXS

　　Power Rating(Low Overload):5.5 kW

　　Rated Output Current:12 A

　　Input Voltage Range:380 to 500 VAC,3-Phase

　　Input Frequency:45 to 66 Hz

　　Output Frequency Range:0 to 320 Hz

　　Overload Capability:Low Overload 110%(1 min/10 min);High Overload 150%(1 min/10 min)

　　Starting Torque:200%(High Overload)

　　Switching Frequency:1 to 16 kHz(Default 10 kHz)

　　Control Method:Frequency Control U/f;Open Loop Sensorless Vector Control

　　Frequency Resolution:0.01 Hz

　　Brake Chopper:Integrated

　　Enclosure Rating:IP54/NEMA12

　　EMC Emission Level:H per IEC 61800-3

　　Standard I/O(Slot A):6 x DI,1 x DO,2 x AI,1 x AO,+10 V ref.,+24 V aux.

　　Relay Outputs(Slot B):2 x Relay(NO/NC)

　　Optional Fieldbus Modules:RS-485,Modbus/TCP,PROFIBUS DP,DeviceNet,CANopen

　　Ambient Temperature Range:-10 to 50°C

　　Storage Temperature Range:-40 to 70°C

　　Humidity:0 to 95%RH(Non-Condensing)

　　Altitude(Full Load):1,000 m without derating

　　Cooling:Standard Air Cooled

　　Harmonic Mitigation:6-Pulse with Built-in DC Choke

　　Board Protection:Varnished(Conformal Coating)

　　Mounting:Wall or Panel Mount

　　Dimensions(W x H x D):128 x 292 x 190 mm

　　Net Weight:5 kg

　　Approvals:CE,UL,cUL,RCM,EAC,KC,Ukrainian

　　Firmware Language Package:UK,RU,CN;Others

　　Default Motor Frequency:50 Hz

　　Warranty:12 to 18 Months(Manufacturer Standard)

　　Technical Highlights

　　200%starting torque enables direct-on-load starting without oversizing.The drive supplies 200%of rated motor torque for 2 seconds every 20 seconds in high overload mode,sufficient for high-inertia loads such as mixers,centrifuges,and crushers.This eliminates the need to select a larger VFD solely to meet breakaway torque requirements.

　　Integrated brake chopper cuts external hardware and panel footprint.Because the brake chopper is built in,only an external braking resistor is needed for regenerative energy dissipation.Panel builders avoid installing a separate braking unit,saving enclosure space and one power component.

　　IP54/NEMA12 enclosure permits direct floor installation in dusty or wet areas.The sealed housing protects against limited dust ingress and splashing water,removing the requirement for an additional protective cabinet in processing zones.What enclosure protection does the NXS00125 provide?It meets IP54 and NEMA12,suitable for mounting outside of clean control rooms.

　　Conformal coated circuit boards raise reliability in corrosive atmospheres.The varnished PCBs resist moisture,chemical vapors,and airborne contaminants,reducing creepage faults.This extends service life in wastewater,food processing,and chemical plants.

　　Sensorless vector control achieves±0.5%speed regulation without an encoder.Open loop vector mode holds speed within 0.5%of rated RPM under changing load,eliminating the cost and installation complexity of external encoder feedback.

　　Modular I/O and fieldbus expansion adapts to plant networks.The unit provides five option slots.Standard A-basic configuration delivers 6 digital inputs,2 analog inputs,1 analog output,and 1 digital output.Fieldbus cards for PROFIBUS DP,Modbus/TCP,and CANopen install into dedicated slots for integration with plant-wide control systems.

　　Applications

　　Pump control in water and wastewater facilities:Matches centrifugal pump speed to flow demand.Operating from 5%to 150%base speed with vector control maintains pressure setpoint accuracy,delivering 30%to 50%energy reduction at reduced flow rates.

　　Fan and blower regulation in HVAC systems:Adjusts fan speed based on temperature,pressure,or CO₂signals.The 0 to 320 Hz output range supports high-speed blowers,and the IP54 enclosure allows mechanical room installation without additional protection.

　　Conveyor drives in material handling:Smoothes acceleration and deceleration with ramp times adjustable from 0.1 to 3,000 seconds.The 200%starting torque overcomes static friction on loaded belts without requiring a larger motor or drive.

　　Mixers and agitators in food and chemical processing:Supplies 200%overload torque for viscous product blending.The built-in brake chopper,combined with an external resistor,stops mixing paddles rapidly for batch changeover,reducing inter-batch cycle time.

　　Industrial compressor control:Maintains constant discharge pressure through internal PID regulation.The 0.01 Hz frequency resolution enables precise motor speed trimming for scroll and screw compressors.

　　Hoist and vertical lifting:Manages overhauling loads with the integrated brake chopper and flux braking capability,which provides up to 30%braking torque without an external resistor.

　　Additionally,Beijing Zhongping Technology supplies the full range of VACON NXS drives to cover power requirements from fractional to high-horsepower applications.Alongside the NXS00125-A5H1SSV-A1A2000000 featured in this article,we stock and deliver models including NXS00035-A5H1SSV-A1A2000000,NXS00045-A5H1SSV-A1A2000000,NXS00055-A5H1SSV-A1A2000000,NXS00075-A5H1SSV-A1A2000000,NXS00095-A5H1SSV-A1A2000000,NXS00125-A5H1SSV-A1A2000000,NXS00165-A5H1SSV-A1A2000000,NXS00225-A5H1SSV-A1A2000000,NXS00315-A5H1SSV-A1A2000000,NXS00385-A5H1SSV-A1A2000000,NXS00455-A5H1SSV-A1A2000000,NXS00615-A5H1SSV-A1A2000000,NXS00725-A5H0SSV-A1A2000000,NXS00875-A5H0SSV-A1A2000000,NXS01055-A5H0SSV-A1A2000000,NXS01405-A5H0SSV-A1A2000000,NXS01685-A5H0SSV-A1A2000000,NXS02055-A5H0SSV-A1A2000000,NXS02615-A5H0SSG-A1A2000000,and NXS03005-A5H0SSG-A1A2000000.Across this lineup,parameters span from 1.1 to 160 kW low overload power,3.3 to 300 A low overload current,0.75 to 132 kW high overload power,2.2 to 245 A high overload current,FR4 to FR9 frame sizes,128 x 292 x 190 mm to 480 x 1,150 x 362 mm dimensions,and 5 to 146 kg weight.Pricing ranges from approximately 960 to 1,240 USD,though actual cost fluctuates with exchange rates,tariffs,and factory adjustments—contact Beijing Zhongping Technology directly for a current quotation.

　　Selection Guidance

　　Suitable applications:

　　Pumps and fans where variable torque control and 110%low overload rating match continuous duty cycles at or below 5.5 kW

　　Conveyors,mixers,and hoists requiring 200%starting torque and dynamic braking capability

　　Installations in dusty or humid environments where the IP54/NEMA12 enclosure allows direct placement without additional cabinets

　　Retrofit and expansion of existin VACON NXS systems,maintaining form,fit,and function compatibility

　　Not recommended for:

　　Single-phase power supplies.This VFD requires a three-phase 380–500 VAC input.For single-phase input applications,select a drive rated for single-phase supply and proper voltage.

　　High-pressure washdown or submersion areas requiring IP66 or NEMA 4X.Select a stainless steel enclosed drive with a higher ingress protection rating for these conditions.

　　Continuous operation above 50°C ambient without derating.If ambient temperature exceeds 50°C,derate the output current by 2.5%per 1°C or move to a higher power model.

　　FAQ

　　1.What are the dimensions and weight of the NXS00125-A5H1SSV-A1A2000000?

　　The drive measures 128 mm wide,292 mm high,and 190 mm deep with a net weight of 5 kg.Gross shipping weight including packaging is 6 kg.

　　2.What is the delivery lead time for this VFD?

　　Standard lead time is 4 to 6 weeks from factory.Units with optional fieldbus modules may require up to 8 weeks.We maintain regional stock of common VACON NXS configurations for expedited dispatch.

　　3.Is this high torque AC drive in stock for immediate shipment?

　　Stock availability varies by configuration.We verify current inventory at time of quotation and provide a confirmed ship date within one business day.

　　4.What certifications does the NXS00125-A5H1SSV-A1A2000000 hold?

　　The unit carries CE,UL,cUL,RCM,EAC,KC,and Ukrainian approvals,meeting applicable directives for low voltage,electromagnetic compatibility,and safety.

　　5.How much does the NXS00125-A5H1SSV-A1A2000000 cost?

　　The NXS00125-A5H1SSV-A1A2000000 generally ranges from 1,800to2,800 USD depending on configuration and quantity.Prices fluctuate due to exchange rates,tariffs,and factory adjustments.For an accurate quotation with current pricing and shipping costs,contact Beijing Zhongping Technology directly.

　　6.What payment terms do you accept for purchasing variable frequency drives?

　　We accept bank wire transfer(T/T)and irrevocable letter of credit(L/C).For qualified corporate accounts with established credit history,Beijing Zhongping Technology offers net 30 payment terms upon credit approval.

　　7.How do I install the NXS00125-A5H1SSV-A1A2000000 and what mounting options are available?

　　The drive mounts on a wall or panel using four fixing points.Installation requires no special tools beyond standard electrician equipment.Clearances of 100 mm above and below,and 20 mm on sides,ensure adequate cooling airflow.

　　8.What is the warranty period and return policy for this drive?

　　We provide a standard manufacturer warranty of 12 to 18 months from date of shipment.Returns require prior authorization and are subject to restocking terms.Beijing Zhongping Technology processes RMA requests and provides return shipping documentation within 48 business hours.

　　9.Is the NXS00125-A5H1SSV-A1A2000000 discontinued or can I still order it?

　　The VACON NXS family remains active with no discontinuation notice.This model is fully supported with spare parts,technical documentation,and firmware updates through VACON and authorized distributors.

　　10.What customs and import duty considerations apply when importing this General Purpose VFD?

　　Variable frequency drives generally classify under HTSUS 8504.40.Shipments are dispatched under Incoterms CPT or as agreed.Import duties,customs fees,and applicable VAT or GST are payable by the buyer at destination.Beijing Zhongping Technology supplies commercial invoices,packing lists,and certificates of origin for all export orders.