Looking for air circuit breaker manufacturers in Yueqing? The local electrical cluster is best known for miniature and moulded-case circuit breakers, but it also contains suppliers working on larger low-voltage power-distribution products. This shortlist brings together ten companies with an official ACB or electrical-manufacturing source and a verifiable connection to Yueqing or the surrounding Wenzhou manufacturing area.
An air circuit breaker, often shortened to ACB, is a large low-voltage circuit breaker used mainly for incoming supply, busbar distribution and high-current feeder protection. It is different from an MCCB: the ACB is generally built around a larger open-frame or air-break structure, may be fixed or draw-out, and is selected as part of a switchboard or power-distribution system. The useful comparison is not a single current number. Start with the frame, operating voltage, poles, neutral rating, short-circuit ratings, trip controller, installation format and the drawings for the complete connection.
Use this list to decide which catalogues to open first, then send every supplier the same written ACB schedule. If you are also building a low-voltage bill of materials, see our Yueqing MCCB, MCB, RCCB/RCBO and relay guides.
How this list was selected: Based on each manufacturer’s official product, company and location information, reviewed on 22 October 2026. This is a research shortlist, not a quality, price, certification, export or “best” ranking. It does not imply that BottomRace has audited every factory or that every series is suitable for your application. Confirm the legal entity, production site, exact model, current documents and local market requirements before requesting samples or arranging a visit.
Ten Yueqing ACB manufacturers to start your enquiry
The published focus below is a route into each catalogue, not a tested performance rating. Start with the switchboard design and the required fault level, then compare models, controllers, accessories and drawings on the same technical basis.
| Manufacturer | Published ACB focus | Useful first question |
|---|---|---|
| CHINT | NXA air circuit breakers from 1600A to 6300A | Which NXA frame, voltage and installation? |
| DELIXI Electric | Low-voltage power distribution and industrial-control manufacturing | Which current ACB series and plant? |
| TENGEN Electric | TGW1N, TGW3 and TeW5 air circuit breakers | TGW1N, TGW3 or TeW5? |
| People Electric | RDW5 intelligent air circuit breakers up to 6300A | Which RDW5 frame and S/H rating? |
| Changan Group | CAW6 intelligent universal circuit breakers | Which CAW6 controller and N setting? |
| HUYU Electric | HUW9 air circuit breakers for high-capacity distribution | Which HUW9 frame and breaking capacity? |
| MOREDAY | MDW1-1600 and MDW1-2000 air circuit breakers | Is MDW1-1600 or MDW1-2000 the right frame? |
| YUYE Electric | YEW3-1600 and YEW1-2000 to YEW1-6300 air circuit breakers | YEW3-1600 or the YEW1 family? |
| Yueqing Damai Electric Co., Ltd. | DMW1 air circuit breakers from 200A to 6300A | Which DMW1 protection functions are required? |
| Zhejiang Keji Electric Co., Ltd. | KJW1 intelligent universal circuit breakers | Which KJW1 frame and model document? |
Manufacturer profiles and questions to ask
1. CHINT
CHINT publishes the NXA Series air circuit breaker for low-voltage main power distribution. The official product page lists frame sizes of 1600A, 2000A, 3200A, 4000A and 6300A; 3-pole and 4-pole versions; fixed and draw-out installation; operating voltages including 380/400/415V, 440/525V and 690V; and compliance with IEC/EN 60947-2. The range is presented with overload, short-circuit and ground-fault protection plus an intelligent controller for monitoring. CHINT’s official ACB workshop page identifies Wenzhou as the manufacturing location, so buyers should confirm the exact legal entity and plant for the NXA order rather than assuming a specific Yueqing site.
Before requesting a quote: Give the required frame size, rated current, operating voltage, frequency, pole count, neutral rating, breaking capacity and fixed-or-draw-out format. Ask for the exact NXA catalogue number, trip-controller variant, Icu/Ics/Icw values at your voltage, dimensions, terminal and busbar arrangement, and the production entity and plant for the quotation.
Official sources: NXA Series ACB product page · CHINT ACB workshop · Company / location information.
2. DELIXI Electric
DELIXI’s official group page describes a Wenzhou manufacturing base for low-voltage power transmission, distribution and industrial automation control electrical products. The group’s electrical business covers low-voltage distribution and industrial-control products, while its contact page gives the DELIXI High-Tech Industrial Park in Liushi, Yueqing. Because DELIXI’s public English product pages can be protected by a dynamic verification screen, this profile deliberately avoids naming an unverified ACB model. Buyers should request the current ACB catalogue, model-level datasheet and the exact manufacturing entity directly.
Before requesting a quote: Ask DELIXI to identify the current ACB series, exact model, frame and rated current, voltage and frequency, poles and neutral rating, Icu/Ics/Icw, trip controller, fixed or draw-out construction and available accessories. Confirm which legal entity and plant will manufacture the quoted breaker, and request the matching catalogue, dimensional drawing and type-test document before comparing price.
Official sources: DELIXI electrical business · Company / location information.
3. TENGEN Electric
TENGEN publishes three ACB families on its official air-circuit-breaker page. TGW1N is listed from 200A to 6300A with 3-pole or 4-pole versions and Icu from 36kA to 120kA. TGW3 is listed from 200A to 4000A with Icu from 36kA to 100kA, while TeW5 is listed from 200A to 6300A with Icu from 50kA to 135kA. The company’s contact page gives the Sulv Industrial Zone in Liushi, Yueqing. These headline ranges are a starting point; the exact frame, voltage and breaking-capacity combination still needs to be fixed in the offer.
Before requesting a quote: Choose the family first, then specify the frame and current, 3-pole or 4-pole configuration, neutral rating, 400V or 690V operating voltage, required Icu/Ics/Icw, trip controller and fixed-or-draw-out installation. Request the model-level table, outline and busbar drawings, accessory list and the production site for the exact TGW1N, TGW3 or TeW5 model.
Official sources: TENGEN ACB range · Company / location information.
4. People Electric
People Electric publishes the RDW5 series for AC 50/60Hz power distribution at operating voltages up to 400V or 690V and rated currents up to 6300A. The official page lists frame sizes from RDW5-1600 through RDW5-6300, 3-pole and 4-pole versions, 100% In neutral rating, fixed or draw-out installation, and IEC 60947-2. Published S and H breaking-capacity tables reach Icu 135kA at 400V and 120kA at 690V for the largest frame. The contact page gives No. 555 Liule Road in Liushi, Yueqing.
Before requesting a quote: Specify the exact RDW5 frame, rated current, S or H breaking capacity, voltage, pole count, neutral setting and fixed or draw-out format. Ask for the selected trip-controller version, Icu/Ics/Icw values at the actual operating voltage, terminal and busbar details, interlock and accessory schedule, dimensional drawing and model-specific test evidence.
Official sources: RDW5 Series ACB · Air circuit breaker category · Company / location information.
5. Changan Group
Changan Group publishes the CAW6 intelligent universal circuit breaker for AC 50Hz systems at 400V or 690V, with a current range from 630A to 6300A and 3-pole or 4-pole construction. The official product page lists fixed and draw-out versions, IEC 60947-2 and GB/T 14048.2, M and H trip-controller variants, and a 4-pole neutral setting of 50% or 100% In. Its contact page gives No. 288 Wei 17th Road in the Yueqing Economic Development Zone. The range is relevant where an intelligent ACB and a defined N-pole setting are part of the distribution design.
Before requesting a quote: Confirm the CAW6 frame and current, rated voltage, frequency, 3-pole or 4-pole arrangement, N-pole setting, M or H controller, breaking-capacity values, fixed or draw-out type and required communication or interlock options. Ask for the exact model code, dimension drawing, trip-setting range and production entity for the quoted breaker.
Official sources: CAW6 ACB product page · Changan ACB category · Company / location information.
6. HUYU Electric
HUYU Electric publishes the HUW9 air circuit breaker for 690V, 6300A-class power distribution, alongside an ACB category covering fixed and draw-out products. The official HUW9 page presents the breaker for high-capacity industrial distribution and describes an intelligent protection and control approach. HUYU’s contact information gives Wenzhou Bridge Industrial Park in Beibaixiang Town, Yueqing. Buyers should treat the headline current and voltage as an entry point and verify the exact frame, breaking capacity and controller for the proposed model.
Before requesting a quote: Ask for the exact HUW9 model, frame current, rated operating voltage, poles, neutral rating, Icu/Ics/Icw, trip controller and fixed or draw-out construction. Confirm available communication, interlocking, shunt trip, undervoltage release and mechanical accessories. Request the outline and busbar drawings, the model datasheet and the production site named in the quotation.
Official sources: HUW9 6300A ACB · HUYU ACB category · Company / location information.
7. MOREDAY
MOREDAY publishes the MDW1 air circuit breaker family and shows MDW1-1600 and MDW1-2000 examples on its official ACB page. The page positions the range for low-voltage industrial power distribution and protection against overload, short circuit and fault conditions. Its location information points to Beibaixiang Town in Yueqing. Because the public page does not establish a complete frame-by-frame ACB range, buyers should not extend the published examples into an assumed 6300A capability without written confirmation.
Before requesting a quote: Start by asking whether MDW1-1600 or MDW1-2000 matches the required current and voltage. Then request the exact catalogue number, 3-pole or 4-pole configuration, neutral rating, Icu/Ics/Icw at the operating voltage, trip-controller type, fixed or draw-out format and accessory list. Ask for the current datasheet and drawing that cover the quoted model rather than relying on the category image.
Official sources: MOREDAY ACB page · Company / location information.
8. YUYE Electric
YUYE Electric publishes the YEW3-1600 and the YEW1-2000~6300 ACB families. The YEW3-1600 page lists AC 50Hz operation at 400V or 690V, a 200A to 1600A current range, 3-pole or 4-pole versions, fixed or draw-out installation, IEC 60947-2 and GB/T 14048.2, and an intelligent controller. Its published YEW1 page presents a higher-current family with fixed or draw-out options. The contact page gives Wei No. 20 Road in the Yueqing Economic Development Zone. Buyers should compare the two families separately because their frames and breaking capacities differ.
Before requesting a quote: State whether the requirement sits in the YEW3-1600 or YEW1 family, then give the exact current, voltage, poles, neutral rating, Icu/Ics/Icw, controller and fixed or draw-out format. Ask for the model-level table and drawing, confirm whether the offered current is a frame rating or a specific In, and identify the production entity and plant in the quotation.
Official sources: YEW3-1600 product page · YUYE ACB category · Company / location information.
9. Yueqing Damai Electric Co., Ltd.
Yueqing Damai Electric publishes the DMW1 air circuit breaker for AC 50Hz distribution networks at 400V to 690V and currents from 200A to 6300A. The official product page describes overload, undervoltage, overvoltage, current/voltage imbalance, short-circuit and ground-fault protection, plus measurement and communication functions in the intelligent version. It also lists IEC 60947-2 and GB/T 14048.2. The contact address is Building 4, Zone B, Electric Power Technology Innovation Center, No. 168 Wei 11 Road, Yanpen Industrial Zone, Yueqing.
Before requesting a quote: Confirm the exact DMW1 frame and current, voltage, poles, neutral rating, Icu/Ics/Icw, controller functions and fixed or draw-out installation. Decide which protection and measurement functions are required rather than accepting every advertised option by default. Request the model datasheet, wiring and communication diagram, outline drawing, accessory schedule and production-site statement.
Official sources: DMW1 ACB product page · Damai ACB category · Company / location information.
10. Zhejiang Keji Electric Co., Ltd.
Zhejiang Keji Electric publishes a universal-circuit-breaker category with KJW1 intelligent models, including KJW1-1000, KJW1-1600, KJW1-2000 and KJW1-3200 in 3-pole versions, plus the KJW15 series. The company describes itself as a manufacturer of high- and low-voltage electrical products and gives an address in the Xinguang Industrial Zone, Liushi, Yueqing. The public product pages establish the model families but do not provide a complete technical table for every frame, so the final selection must rely on the current model datasheet.
Before requesting a quote: Specify the required KJW1 frame, current, voltage, pole count, breaking capacity, controller and fixed or draw-out construction. Ask for the exact model code, complete electrical table, outline and installation drawing, accessory list and the legal entity that will manufacture the order. Verify the requested rating on the model datasheet rather than inferring it from the series name.
Official sources: KJW1 universal circuit breakers · KJW1-2000/3P product page · Company / location information.
Compare ACBs on the switchboard, not the catalogue cover
An ACB quotation can look complete while leaving out the values that determine whether the breaker can be installed and coordinated. Put the switchboard design, fault level, cable or busbar arrangement and required accessories in one written brief. Ask each supplier to quote the exact breaker, controller and set of accessories, and to mark every deviation rather than substituting a similar-looking frame.
| Include in your enquiry | Ask the supplier to confirm |
|---|---|
| Frame and current | Frame size, rated current In, available settings and whether the quoted current is a frame rating or the actual protection rating for the order. |
| Voltage, frequency and poles | Rated operating voltage, frequency, 3P or 4P construction, neutral rating and whether the neutral is switched or protected. |
| Short-circuit duty | Icu, Ics, Icw and Icm at the actual operating voltage, plus the system fault level and coordination assumptions used for the selection. |
| Trip controller | Controller family, protection functions, setting ranges, metering, communication protocol and whether the required version is included in the quoted price. |
| Installation format | Fixed or draw-out, cradle and terminal arrangement, guide rails, interlocking, lifting and insertion clearances, and the required switchboard opening. |
| N-pole rating | Neutral current rating and setting, particularly for 4-pole systems where 50% In, 100% In or a switched neutral may change the protection scheme. |
| Accessories and dimensions | Shunt trip, undervoltage release, closing coil, motor operator, auxiliary contacts, position contacts, locks, phase barriers and the outline and busbar drawings. |
| Model-level evidence | Datasheet, type-test or declaration scope, IEC or GB standard, production site and a document that names the exact catalogue number and ratings. |
| Commercial package | MOQ, sample or pilot-unit charge, lead time, Incoterms, packing, warranty, spare parts and change-control arrangements. |
Do not compare a headline frame size with the short-circuit rating of a complete switchboard. The breaker, cradle, terminals, busbars, current transformers and enclosure all affect the installed assembly. A 6300A frame is not automatically suitable for a 6300A load, and an Icu figure printed at one voltage cannot be carried over to another voltage without the model table.
For a draw-out ACB, ask for the connected, test and disconnected positions, the insertion and withdrawal procedure, the interlock scheme and the clearance needed in front of the switchboard. For a fixed ACB, confirm terminal access, cable or busbar bending space and the method for isolating the incoming supply during maintenance. Add the trip-controller settings and coordination study to the same technical package.
Turn the shortlist into a productive ACB factory visit
Arrange a visit after the supplier has answered the technical schedule and identified the production site for the exact model. An ACB company may assemble the breaker, controller and cradle in one plant while sourcing components, mouldings or metal parts from other locations. The visit should follow the actual process behind your product.
- Bring the switchboard design: include the single-line diagram, system voltage, fault level, frame and current schedule, poles, neutral arrangement, accessories and destination market.
- Agree the visit checklist: identify incoming material inspection, frame assembly, contact and arc-chamber work, controller assembly, calibration, mechanical operation, dielectric testing and packing stages relevant to the quoted family.
- Compare the sample with the quotation: check the model label, frame, poles, controller, ratings, terminal arrangement, cradle, interlocks and supplied accessories against the approved drawing.
- Review traceability: ask how frames, contacts, controllers and test records are linked to the serial number, test certificate, carton label and change notification.
- Confirm what the visit proves: a factory visit provides observations and answers, not a type test, certification review or guarantee of future production quality. Arrange product testing, coordination and market-access checks separately.
If you are travelling to Yueqing, 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 buyers often ask
What is the difference between an ACB and an MCCB?
Both are low-voltage circuit breakers, but they serve different parts of the distribution system. An MCCB is usually a compact moulded-case device for feeder or branch protection, while an ACB is a larger air-break breaker used for main incoming, busbar and high-current feeder duties. The final choice depends on current, fault level, selectivity, switchboard design and maintenance strategy, not on the product name alone.
When should I choose a draw-out ACB?
Draw-out construction can make inspection, testing and replacement easier because the breaker body can be moved to test and disconnected positions. It also adds cradle, interlock and space requirements. Choose it when the maintenance and operating procedure justifies the extra hardware, and confirm the connected, test and disconnected positions and the required clearance with the switchboard designer.
Which short-circuit rating should I compare?
Compare Icu, Ics, Icw and Icm at the actual operating voltage, together with the system fault level and the coordination study. A headline Icu value at 400V is not interchangeable with the value at 690V, and it does not by itself prove that the complete switchboard assembly is suitable. Ask for the model-specific table and the assumptions behind the selection.
Does a 4-pole ACB always protect the neutral?
No. A 4-pole device may switch the neutral, protect it at a selected rating or use a different N-pole arrangement. Confirm whether the neutral is rated at 50% In, 100% In or another value, whether it is switched and how the trip controller treats neutral current. The answer affects the single-line diagram, protection settings and the model code.
Can I use the same ACB model at 400V and 690V?
Only when the manufacturer’s model table confirms the required ratings at both voltages. Frame size and current alone do not establish the breaking capacity, insulation or clearance performance. Ask for Icu, Ics, Icw, Ue, Ui and Uimp for the exact catalogue number and operating voltage, then check the switchboard insulation and coordination assumptions.
What should be included in the ACB quotation?
At minimum, include the exact breaker model, frame and current, voltage and frequency, poles, neutral rating, Icu/Ics/Icw, trip controller, fixed or draw-out format, terminal arrangement and required accessories. Add the outline drawing, busbar connection drawing, test document, production site and commercial terms. A price without these items is not a comparable offer.
Are these companies ranked by quality, price or export volume?
No. This is a research shortlist based on published product and location information. It is not a quality, price, certification or export ranking. Send every supplier the same technical schedule, compare deviations and documents, and verify the legal entity and production site before ordering.
Can BottomRace help arrange a Yueqing ACB factory visit?
Yes. BottomRace provides electrical procurement support, factory screening, accompanied visits, English-Chinese interpretation and local coordination in Yueqing. We confirm the scope, availability and fees before you book. Email your ACB schedule and preferred dates to contact@bottomrace.com.
Need help narrowing your ACB shortlist?
Email the system voltage, fault level, frame and current, pole and neutral arrangement, trip-controller requirement, fixed or draw-out format, accessory list and destination market. We can discuss supplier screening and local support in Yueqing.