For a Yueqing soft starter manufacturer shortlist, compare CHINT, PEOPLE, TENGEN, CHZIRI, SAIKONG, Chuanken, SOSIAT, NENA, Long Road and Winston. These ten companies publish semiconductor motor soft starters, including built-in-bypass, external-bypass and on-line product families. The table below identifies their published ranges and the first question to settle before requesting a quotation.
For a meaningful comparison, describe the complete start cycle: motor full-load current, supply voltage, driven load, starting-current limit, acceleration time and repeat-start interval. A matching kW label does not establish matching starting capability. Also state whether you are buying a soft-starter unit or a wired cabinet with protection, bypass and controls. For a wider comparison of starting methods, see our Yueqing motor starter guide.
How this list was selected: Official product, catalogue and contact pages were reviewed on 23 October 2026. The order is a research shortlist, not a quality, price, certification, export or “best” ranking. Confirm the legal entity, factory, exact model and current supporting documents before ordering. Listing a company does not mean BottomRace has audited its production or verified every published rating.
Ten Yueqing soft starter manufacturers to compare
Use the published range to choose an initial supplier group. Settle the bypass arrangement and starting duty before comparing unit prices.
| Manufacturer | Published location | Published soft-starter focus | Useful first question |
|---|---|---|---|
| Zhejiang CHINT Electrics Co., Ltd. | No. 1 CHINT Road, CHINT Industrial Zone, North Baixiang, Yueqing | NJR2-D external-bypass and NJR2-ZX on-line soft starters | Which NJR2 configuration and starting-duty schedule does the quotation cover? |
| People Electrical Appliance Group Co., Ltd. | No. 555 Liule Road, Liushi, Yueqing | RDZR8-SP bypass and RDJR6 motor soft-starter families | Is the offered unit a bypass soft starter or a complete tested cabinet? |
| TENGEN Electric | Sulv Industrial Zone, Liushi, Yueqing | TGS3 semiconductor soft starters with selectable protection functions | Which TGS3 size and protection settings fit the motor's complete start cycle? |
| ZIRI Electrical Technology Co., Ltd. (CHZIRI) | Building 2, Phase II, CHINT IoT Sense Industrial Park, Yueqing | ZJR2 soft starters, bypass options and motor-control panels | Is the quoted ZJR2 fitted with internal bypass or designed for an external contactor? |
| Zhejiang Saikong Electrical Technology Co., Ltd. | No. 22 Liujiang Avenue, Liushi, Yueqing | SST, SSR and SJR3 ranges, including SST-ES/MS built-in-bypass units | Which SST or SSR variant and bypass configuration are being offered? |
| Zhejiang Chuanken Electric Co., Ltd. | Wengyang Town, Yueqing | SCKR1-7000 built-in-bypass and SCKR1 on-line soft starters | Which SCKR1 platform, control options and bypass hardware are specified? |
| Zhejiang Shuoshi Electric Technology Co., Ltd. (SOSIAT) | No. 77-3 Wei 19th Road, Yueqing Economic Development Zone | SHR6E built-in-bypass, SHR3D and SHR2DN soft-starter families | Which SHR model and connection arrangement are covered by the supplied manual? |
| Zhejiang Xinhang Electric Co., Ltd. (NENA) | No. 23 Huaping Road, Shuguang Industrial Zone, Wengyang, Yueqing | NR1000 built-in-bypass, PR800 external-bypass and ZR on-line ranges | Is the proposal for NR1000, PR800 or ZR, and does it include cabinet assembly? |
| Yueqing Long Road Electric Co., Ltd. | No. 221 Wei 17 Road, Yueqing Economic Development Zone | AJR3 intelligent motor soft starter | Which AJR3 model has a current technical schedule for the required load? |
| Yueqing Winston Electric Co., Ltd. | Floor 3, Liufeng Building, Liushi, Yueqing (corporate office) | WSTR3000 external-bypass and WSTRD-F3000 built-in-bypass soft starters | Which WSTR or WSTRD variant and load-duty rating are written into the quote? |
Manufacturer profiles and sourcing questions
1. Zhejiang CHINT Electrics Co., Ltd.
Short name: CHINT
Published location: No. 1 CHINT Road, CHINT Industrial Zone, North Baixiang, Yueqing
CHINT publishes separate NJR2-D, NJR2-T and NJR2-ZX soft-starter families. The NJR2-D page describes controlled starting and stopping of three-phase squirrel-cage induction motors, with multiple starting modes and an external bypass contactor. NJR2-ZX is presented as an on-line alternative, while NJR2-T addresses a different supply-voltage class. This distinction matters when comparing cabinet cost and heat management. CHINT provides catalogues and manuals by family; use the document for the offered model rather than combining ratings from different NJR2 pages. Its NJR2-D manual identifies the Yueqing company address.
Before requesting a quote: Send the motor nameplate, load type, starting current, acceleration time and restart schedule. Request the exact NJR2 model, voltage class, bypass requirement, overload settings, control supply and derating. Ask for the selected upstream protective device, current manual and documents naming the offered model and production site.
Official sources: NJR2-D soft starter · NJR2-ZX on-line soft starter · company contact details.
2. People Electrical Appliance Group Co., Ltd.
Short name: PEOPLE
Published location: No. 555 Liule Road, Liushi, Yueqing
PEOPLE publishes the RDZR8-SP bypass soft starter and a separate RDJR6 motor soft-starter range. These are semiconductor motor-control products, distinct from the magnetic starters and manual motor protectors elsewhere in the catalogue. The RDZR8-SP product page and RDJR6 manual give buyers identifiable families to put into an enquiry. Ask PEOPLE to specify the actual bypass hardware and protection functions for the selected unit. A product called a bypass soft starter may still need an incoming protective device, isolation, control wiring and an enclosure to complete the installation.
Before requesting a quote: Identify the motor current, operating voltage, driven equipment and start frequency. Request the complete model code, starting-duty rating, bypass circuit, overload functions during running, fault outputs, control supply and terminal diagram. If buying a cabinet, obtain an itemized parts list and the factory's assembly-test scope.
Official sources: RDZR8-SP bypass soft starter · RDJR6 official manual · company contact details.
3. TENGEN Electric
Short name: TENGEN
Published location: Sulv Industrial Zone, Liushi, Yueqing
TENGEN's TGS3 page describes a soft starter using a silicon-controlled rectifier (SCR) module to control three-phase induction-motor starting and stopping. It lists protection functions including overload, phase loss, prolonged starting-current limitation and supply-voltage faults, together with supply and environmental conditions. The page also links a dedicated TGS3 catalogue. For sourcing, use that family-specific material to establish the required starting duty and cabinet arrangement. TENGEN's TGS51 enclosed DOL starter is a separate product and should not be used as the soft-starter specification.
Before requesting a quote: State supply voltage and frequency, motor current, load inertia, acceleration time and starts per hour. Request the selected TGS3 rating, current-limit and stop modes, bypass arrangement, overload setting and cooling clearances. Confirm which functions and external protective devices are included in the quoted configuration.
Official sources: TGS3 soft starter and catalogue · company contact details.
4. ZIRI Electrical Technology Co., Ltd. (CHZIRI)
Short name: CHZIRI
Published location: Building 2, Phase II, CHINT IoT Sense Industrial Park, Yueqing
CHZIRI publishes ZJR2 soft starters with model tables, starting modes, protection functions and an external-contactor wiring diagram. Its ZJR2 page makes an important configuration distinction: it describes external bypass and says internal bypass is available as an option for certain smaller models. Do not assume every ZJR2 is supplied with the same bypass circuit. CHZIRI also publishes motor-control panels, making it a candidate for both unit and cabinet enquiries. The current contact page gives a Yueqing industrial-park address; confirm the workshop that will assemble and test the specific order.
Before requesting a quote: Provide the motor current, supply voltage, load profile and start cycle. Confirm the complete ZJR2 code, bypass option, current-time capability, overload settings and input protection. For a panel quotation, request the schematic, bypass-contactor reference, ventilation calculation, parts list and parameter record.
Official sources: ZJR2 soft starter · Company and panel scope · company contact details.
5. Zhejiang Saikong Electrical Technology Co., Ltd.
Short name: SAIKONG / SAFESAV
Published location: No. 22 Liujiang Avenue, Liushi, Yueqing
The safeinvert.com site identifies Zhejiang Saikong Electrical Technology Co., Ltd. on its contact page and uses SAIKONG and SAFESAV branding across its catalogue. It publishes SST, SSR and SJR3 soft-starter ranges. Its SST-ES/MS page describes compact built-in-bypass units with programmable inputs and outputs, RS485 communication and motor-protection functions. The broader range includes different sizes and control arrangements, so the series label alone is not an adequate purchase specification. Identify the exact variant and the legal entity named on the quotation, product documents and invoice.
Before requesting a quote: Specify the motor current, voltage, required duty and panel space. Request the full SST or SSR order code, bypass hardware, protection schedule, I/O assignment, communication register map and cooling requirements. Ask for current model documentation and written approval rules for changes to SCR modules, contactors or firmware.
Official sources: SST-ES/MS built-in-bypass soft starters · Soft-starter range · company contact details.
6. Zhejiang Chuanken Electric Co., Ltd.
Short name: CHUANKEN
Published location: Wengyang Town, Yueqing
Chuanken publishes the SCKR1-7000 built-in-bypass soft starter, alongside on-line and other built-in-bypass families. The SCKR1-7000 page describes adaptive acceleration, selectable starting modes, a remote-mounted operating panel, monitoring and event logging. It also lists optional communication and I/O accessories. These details are useful when comparing a basic starter with an automation-ready configuration. Confirm which options are actually fitted; a feature shown in a range overview may require an accessory. The official contact page places Zhejiang Chuanken Electric in Wengyang, Yueqing.
Before requesting a quote: Send the required start curve, motor current and repeated-start schedule. Ask for the complete SCKR1 code, bypass arrangement, overload settings, fitted communications, I/O cards and remote-panel kit. Request the current manual, fault-log format, ventilation requirements and model-specific coordination with the input protection.
Official sources: SCKR1-7000 built-in-bypass soft starter · company contact details.
7. Zhejiang Shuoshi Electric Technology Co., Ltd. (SOSIAT)
Short name: SOSIAT
Published location: No. 77-3 Wei 19th Road, Yueqing Economic Development Zone
SOSIAT's official contact page names Zhejiang Shuoshi Electric Technology Co., Ltd. and gives its Yueqing Economic Development Zone address. The published soft-starter range includes SHR6E, SHR3D and SHR2DN models. SHR6E is described with built-in bypass, selectable start/stop control, a remote-capable display, event recording and RS485 communication. Its page also discusses different motor connection arrangements. Ask for the model's approved circuit and parameter instructions rather than selecting a wiring method from a headline. The company also markets medium-voltage cabinets, which require a separate technical enquiry.
Before requesting a quote: Confirm the low-voltage model, motor nameplate current, starting duty, in-line or inside-delta connection and overload setting method. Request the installed bypass, protection functions, control inputs, communications and supported fault-protection combination. Obtain the current manual and documents for the exact SHR configuration.
Official sources: SHR6E intelligent motor soft starter · Soft-starter range · company contact details.
8. Zhejiang Xinhang Electric Co., Ltd. (NENA)
Short name: NENA / XINHANG
Published location: No. 23 Huaping Road, Shuguang Industrial Zone, Wengyang, Yueqing
NENA's site identifies Zhejiang Xinhang Electric and separates NR1000 built-in-bypass, PR800 external-bypass and ZR800/ZR900 on-line soft-starter categories. It also lists soft-starter cabinets as a distinct product group. This makes the company relevant to buyers comparing both a control unit and a completed panel, provided the enquiry defines the delivery boundary. Ask which family is proposed and where the unit and cabinet are manufactured. The current contact page gives a Huaping Road address in the Shuguang Industrial Zone of Wengyang, Yueqing.
Before requesting a quote: Provide the motor and load schedule, intended bypass architecture and installation environment. Request the exact model and starting-duty data. For an assembled cabinet, obtain the input breaker or fuse, bypass contactor, protection settings, drawings, cooling provisions and agreed routine-test records. Confirm the production address before arranging a visit.
Official sources: Soft-starter and cabinet ranges · company contact details.
9. Yueqing Long Road Electric Co., Ltd.
Short name: LONG ROAD
Published location: No. 221 Wei 17 Road, Yueqing Economic Development Zone
Long Road publishes an AJR3 intelligent motor soft starter alongside magnetic, enclosed and star-delta starters. The dedicated AJR3 page identifies the semiconductor-starter product to request, while the other catalogue families serve different starting methods. Include a current AJR3 datasheet and manual in the document request, with model-level current, voltage and duty data. Establish the selected unit's permitted start cycle and required external components before comparing its price with another manufacturer's complete cabinet.
Before requesting a quote: Send the motor current, line voltage, loaded or unloaded start condition, acceleration time and starts per hour. Ask for the AJR3 selection, bypass circuit, overload functions, input protection and control-terminal diagram. Confirm whether the price covers the unit alone or an assembled cabinet and which tests are supplied with the order.
Official sources: AJR3 intelligent motor soft starter · company contact details.
10. Yueqing Winston Electric Co., Ltd.
Short name: WINSTON
Published location: Floor 3, Liufeng Building, Liushi, Yueqing (corporate office)
Winston's official catalogue separates WSTR3000 external-bypass starters from WSTRD3000 and WSTRD-F3000 built-in-bypass ranges. It also lists soft-starter cabinets as a separate product group. This gives buyers identifiable enquiry routes for different power-circuit arrangements. Request the model-specific technical schedule so that voltage, current and starting duty can be compared directly. Keep each family's data separate and confirm the unit and cabinet manufacturing sites. The Liufeng Building address is published as a corporate office, so it should not automatically be used as the factory-visit destination.
Before requesting a quote: State motor current, supply voltage, acceleration time, load type and starts per hour. Confirm the full model, built-in or external bypass, protection during running, control supply, fault signals and communication options. Request the current wiring diagram, cabinet heat-management requirements and supported upstream protective device.
Official sources: WSTRD-F3000 built-in-bypass range · WSTR3000 external-bypass range · company contact details.
Soft starter quotation checklist
Send each supplier the same duty schedule and require a written model selection with any exceptions. Treat an ordinary start, a long high-inertia start and several consecutive hot restarts as different specifications.
| Include in your enquiry | Ask each supplier to confirm |
|---|---|
| Motor and driven load | Nameplate voltage, frequency and full-load current; motor connection, load type, loaded or unloaded starting, inertia and required acceleration or stopping behaviour. |
| Starting-duty schedule | Required starting current, starting duration, starts per hour, minimum interval between starts, consecutive cold and hot starts, and the selected unit’s published capability for that duty. |
| Supply and control voltages | Main-circuit voltage class and tolerance, frequency, separate control supply, digital-input voltage and any required control transformer or power supply. |
| Bypass architecture | Built-in bypass, external bypass or continuous on-line operation; exact contactor where applicable, bypass command and feedback, protection during bypass and replacement access. |
| Motor connection | In-line or inside-delta connection, approved motor terminal arrangement, model eligibility, current-setting convention and a wiring diagram for the exact configuration. |
| Starting and stopping modes | Voltage ramp, current limit, adaptive or other available modes, their load limitations, soft-stop behaviour and the settings recommended for the stated machine. |
| Motor protection | Overload model and trip class, phase-loss or imbalance response, locked-rotor or start-time monitoring where available, reset mode and protection that remains active after bypass. |
| Fault protection and isolation | Prospective fault current, specified fuse or circuit breaker, semiconductor-protection requirements, line contactor or isolator, declared coordination and supporting evidence for that combination. |
| Cooling and installation | Losses and cooling requirements in each operating mode, cabinet temperature, clearance, ventilation, altitude and ambient derating, orientation and complete-assembly IP rating. |
| Controls and integration | Local/remote selection, PLC inputs, run/bypass/trip outputs, communication protocol and register map, remote keypad, event logs and behaviour after power restoration. |
| Documents and verification | Current model manual, datasheet, circuit drawings, parameter list, applicable IEC 60947-4-2 edition, test evidence and destination-market documents for the supplied configuration. |
| Supply and factory scope | Unit or complete cabinet, legal manufacturer and seller, production site, parts list, firmware version, routine-test records, approved substitutions, lead time, warranty and spare-parts availability. |
Compare current, time and repetition together. A quoted current limit is only useful with its permitted starting time and restart schedule. A bypass contactor reduces semiconductor losses during normal running, but it does not remove the heating produced during repeated starts. Ask for the manufacturer’s starting-capacity data at the specified ambient temperature. The ABB Softstarter Handbook explains why starting current, starting time and overload protection must be considered together.
Define what “on-line” means in the offered circuit. Supplier terminology varies. Obtain the power diagram and confirm whether the semiconductors carry current continuously or whether a contactor bypasses them after acceleration. Ask who supplies that contactor and how overload monitoring continues during bypass. Cabinet losses, wiring, service access and protection can change with the answer.
Match the standard and documents to the unit. IEC 60947-4-2 addresses semiconductor motor controllers, starters and soft starters. Ask which edition and model configuration the supplier’s documents cover. A website logo or an IEC reference is not evidence that every size, bypass option or assembled cabinet has the same approval. Motor fault detection also does not establish the short-circuit interruption capability of the installation.
Where separate components are part of the specification, our Yueqing contactor guide and motor protection circuit breaker guide can help identify additional sources. Select the actual protective combination from the soft-starter manufacturer’s instructions and coordination evidence.
What to check during a soft starter factory visit
Agree the model, starting-duty schedule and supply scope before visiting. Ask the supplier to identify which stages it performs itself: controller design, circuit-board assembly, power-module assembly, bypass integration, cabinet wiring, parameter loading and final testing.
- Trace critical components: compare thyristor or SCR modules, bypass contactors, current sensors, fans, power boards and terminals with the approved parts list. Review how substitutions are controlled.
- Review the power assembly: ask about heatsink preparation, thermal-interface materials, mounting and terminal torque, clearances, busbar insulation and protective-earthing connections.
- Check firmware and parameters: link the hardware revision, firmware version, motor-current entry, start/stop mode, overload settings and restart behaviour to the approved configuration.
- Watch functional verification: ask how the factory checks start, run, bypass, stop and trip signals. Review phase-loss, overtemperature and other declared protection checks appropriate to that model.
- Understand the load test: identify the actual test current, motor or test equipment, starting time, number of cycles and acceptance criteria. A control-circuit simulation alone does not demonstrate starting performance under load.
- Inspect cabinet delivery: verify the incoming protection, bypass wiring, interlocks, ventilation, entry points and operator panel against the approved schematic and enclosure rating.
- Follow the records: link serial numbers, component batches, parameter files, calibration and test results to the finished units, manuals and packing labels.
A factory visit helps you assess the production process and ask questions about the order. Use model-specific tests and certification documents to evaluate the declared performance and market requirements separately.
BottomRace coordinates electrical sourcing and purchasing in Yueqing. Pro: $0 separate service fee; procurement service costs are included in the product quotation. Basic: 5% of product value, with a minimum service fee of $100, for your existing Yueqing suppliers. Compare our Pro and Basic services. For on-site meetings, see our factory visit services. The quotation confirms the scope, inspections, payment terms and any additional costs.
Questions soft starter buyers ask
Can I choose a soft starter by motor kW alone?
Use motor kW as an initial catalogue reference, then verify full-load current at the actual supply voltage and the complete starting duty. Ask the supplier to select against starting current, acceleration time, start frequency and installation temperature. Two units with the same kW label can have different permitted start cycles.
Does built-in bypass remove the need for upstream protection?
No. Bypass describes the current path after acceleration. The installation still needs the protective and isolation devices required by the manufacturer’s circuit and the applicable installation rules. Request the exact fuse or breaker, supported fault level, overload protection during bypass and the complete wiring diagram.
Can every soft starter be connected inside delta?
No. The motor must have the required accessible terminals and winding arrangement, and the starter must explicitly support the connection. Use the selected model’s diagram and setting instructions. Do not apply an assumed current-setting factor to a model whose manual describes a different sensing or parameter convention.
Should I always select the lowest starting-current limit?
The setting must allow the motor to accelerate the actual load within the permitted time. A lower current setting can leave insufficient accelerating torque and extend the start. Ask the supplier to justify the recommended current limit and ramp for the load, together with the motor’s and starter’s thermal limits.
Can one soft starter start several motors in sequence?
Only where the manufacturer supports the proposed circuit, cumulative starting duty and control sequence. Each motor needs the required protection, and the switching and bypass logic must be engineered for the arrangement. Submit all motor currents, start times, order of operation and restart conditions for written selection.
Does a soft starter provide continuous variable-speed control?
A conventional soft starter controls starting and stopping at the supply frequency. If continuous speed regulation is required, evaluate a variable frequency drive against the process duty. State this requirement before buying a soft starter or comparing cabinet prices.
Planning a Yueqing soft starter sourcing trip?
Email your motor nameplate, load type, supply voltage, starting duty, preferred bypass arrangement, quantities and visit dates. We can discuss supplier screening and agreed local support.