Benlong Automation Technology Co., Ltd.
奔龙自动化科技有限公司
Benlong builds custom lines that assemble and test PV DC isolating switches from 2P to 8P. Makers of disconnect switches are the buyers it serves; solar cell and module plants need a different supplier.
Supplier at a glance
- Location
- Wenzhou, Zhejiang
- Equipment listed here
- PV switch production
- PV product line
- A custom line that assembles and tests DC disconnect switches for solar installations. [2]
- Trade-fair listing
- The Elec Expo 2024 organizer report names BENLONG AUTOMATION TECHNOLOGY CO LTD on page 36 of the PDF. [4]
- Profile sources
- 4 named sources; source list
Company scope
What the company makes
Benlong Automation Technology Co., Ltd. (奔龙自动化科技有限公司, Wenzhou, Zhejiang) designs and builds assembly and test automation for low-voltage electrical products. Its solar offer is a production line for DC isolating switches, the disconnects fitted on the DC side of PV systems. The line puts together terminals, contacts and the rotary mechanism, places the arc-extinguishing parts, stacks the poles and logs each inspection result. Benlong dates the company to 2008.
The line catalogue gives pole formats from 2P to 8P, switch ratings of 16–200 A DC, a hi-pot tester up to 5,000 V and stations for torque, stroke and contact force. Benlong configures each line to the customer's switch, so pricing depends on your drawings and acceptance limits. The contact page places the company in Beibaixiang, Yueqing. The Elec Expo 2024 organizer report lists BENLONG AUTOMATION TECHNOLOGY CO LTD on page 36 of its PDF.
A strong first enquiry carries your switch drawings with an acceptance plan for every station. Contact force, operating torque, the electrical test recipe and the handling of rejected switches decide whether a quoted line suits your product.
Equipment portfolio
Start with the actual equipment
The entries below cover selected products and series from this manufacturer. Ask for the full catalogue if your project needs other models.
PV DC isolating-switch automatic production line →
Benlong's custom line builds PV DC isolating switches. It assembles terminals, springs and contacts, fastens and press-fits the rotary mechanism, places arc chutes, rivets the poles, runs hi-pot and rotary tests and marks each switch with a code linked to MES. Benlong… [2]
Specifications & selection questions →Scope of the line
Benlong PV switch line: what each work package covers
| Work package | What Benlong lists | What to send or ask |
|---|---|---|
| Mechanical assembly | Process modules for the housing, terminals, contacts and rotary mechanism. | Send part drawings and ask which operations and feeders the quote includes. |
| Pole stacking | 2P, 4P, 6P and 8P configurations. | Ask which formats the quoted tooling runs and how a changeover is proven at acceptance. |
| Inspection and records | Force, torque, stroke, vision, hi-pot and code/MES functions. | Ask which measurements and data links come with the delivered stations. |
| Cell and module production | Outside this line, which handles switches only. | Send stringing or lamination needs to a module-equipment maker. |
The line serves switch component manufacturing. A solar cell or module factory needs other equipment. [2]
Each quote follows one drawing
Share the contact geometry, spring and terminal details, pole layout, fasteners and mechanism travel, along with the specification of the finished switch. Two designs with similar current ratings or pole counts can still need different feeders, press tools and arc-chute stations, so expect a separate technical answer for each design. [2]
Set the pass limits
Contact force, torque and hi-pot: turning Benlong's checks into pass limits
Contact force
Benlong lists load-cell monitoring over a 10–200 N range. Ask where on the station force is measured and how the recipe tells assembly force apart from finished contact pressure. Request sample results taken with your own spring and contact geometry. [2]
Torque curves and stroke
Rotary torque curves and ON/OFF stroke detection are on Benlong's list. Specify fixture alignment, turning direction, speed, the curve shapes you accept and how the sensors are calibrated. Each curve should be stored against the right switch serial with a clear pass/fail rule. [2]
Hi-pot recipe
The tester reaches up to 5 kV. That figure describes the test equipment, while your switch's rated working voltage and its certification are separate matters. Write down connections, ramp, dwell, limits and a safe test sequence together with your test engineer. [2]
From quote to acceptance
Planning a Benlong order: station list, trial and schedule
Fix the station list
Benlong describes custom modules and names automatic packaging among its typical options. Ask for the quoted boundary from incoming parts to collected finished switches, covering packaging, code marking, utilities, controls, guarding and the link to your MES. Count a function shown in photos as optional until it appears in the quote. [2]
Ask for a demonstration on your switch
The product page tells the story of an unnamed PV customer, and the company page shows partner logos and patent counts. For your own decision, ask for a named reference or a live demonstration plus a documented trial on your switch, with throughput and yield counted. [2][1]
Get one dated programme
The page quotes 90–120 days for standard delivery and also lists separate durations for design, layout, manufacturing, installation and SAT. Ask Benlong for a single dated plan with start and end milestones and the assumptions behind them. Settle who handles FAT, site commissioning, training, SAT and support before you sign. [2]
Project fit
Match the offering to your project
Makers of PV DC disconnect switches who have a finished switch design and want custom assembly and inspection automation for it.
Engineering teams ready to write mechanical, electrical and traceability acceptance limits before they compare line quotations.
Confirm before ordering
- A model reference and signed configuration for your switch, with a FAT plan written around your drawing.
- Throughput, yield or field results from a named customer, if you intend to rely on such figures.
- Copies of any UL or IEC certificates mentioned in sales material, and the test standard that applies to your switch.
- The legal entity that signs the contract, a factory visit or audit if your process requires one, and permission to reuse Benlong photos and media.
Benlong's own company, contact and switch-line pages and the Elec Expo 2024 exhibitor report supply the facts on this listing.
Certificates & approvals
Approvals on file
No factory audit or equipment certificate is on file for this manufacturer yet. Ask for current certificates, with their scope and validity, in your quotation request.
Prepare before contacting
Your PV DC isolating-switch automatic production line enquiry checklist
Tick the questions that apply to your project, then take them into your sourcing request. Ticking an item here does not contact the manufacturer.
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Continue to sourcing requestRelated procurement notes
Equipment trials, FAT and SAT for PV manufacturing equipment
Buyer questions
Can this Benlong line build solar modules?
No. It makes PV DC isolating switches. Cell stringing and module lamination call for separate equipment from a module-line maker. [2]
Is a 5 kV hi-pot tester the same as a 5 kV switch rating?
No. The tester range, your switch rating, the test recipe and third-party certification are four separate items. Ask for the documents and the agreed recipe that apply to your switch. [2]
Can I plan my capacity from the customer story on Benlong's page?
The story names no switch design or operating conditions. Set your capacity figure in a trial that counts accepted switches on the line you order. [2]
What does the Elec Expo 2024 listing tell me?
It shows Benlong's English company name in the organizer's 2024 report. Factory qualification and line performance are matters for your own visit and acceptance trial. [4]
Sources
Where this information comes from
Registered Wenzhou automation builder with a dedicated PV disconnect-switch line; configuration, trial output and certificates are agreed order by order.
Company facts come from the publications listed below, each with the date it was checked. The project-fit notes and enquiry checklist are our buying guidance.
- Benlong company introduction ↗Company page · Checked Checked 2026-10-11
Automation for low-voltage electrical manufacturing, the 2008 founding year, certificate and customer counts.
- Benlong PV DC isolating-switch line ↗Product page · Checked Checked 2026-10-11
Assembly, measurement, inspection and traceability functions, the technical table, a customer story and delivery durations.
- Benlong contact page ↗Contact page · Checked Checked 2026-10-11
Company address in Beibaixiang, Yueqing.
- Elec Expo 2024 organizer report ↗Exhibition report · Checked Checked 2026-10-11
Benlong's English company name in the exhibitor list on PDF page 36.
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