"DONGNAN Waterproof Micro Switch Alternatives in 2026: Which Suppliers Match the WS Series Column by Column"

DONGNAN states the IP rating for each WS part number separately, and within a series the terminal type and the wire lead type can carry different ratings, as on the WS4, rated IP50 as a terminal type and IP67 with wire leads. A second source is therefore specified against the rating stated for the exact version in production, terminal type or wire lead type, so the alternative carries the same IP coverage as the installed part. An alternative part is compared with the DONGNAN page column by column for IP coverage, terminal form, rated current at voltage, actuator, life and approvals, and with the drawing of the part in production for body size and mounting hole positions. By comparing supplier series with the DONGNAN WS pages column by column, the article helps purchasing teams qualify a second source against the version in production.

The IP Line on a DONGNAN WS Part Number Names the Version Installed

Each WS page states IP67 in the IEC 60529 format and then qualifies where the rating stops, in one of three wordings. The wording on the WS page in production decides which end of the alternative has to hold IP67. The WS3 and WS4 pages split the rating by version, IP50 for the terminal type and IP67 for the wire type. The WS1 and WS5 pages read "IEC IP67 (Except terminal part of terminal type)", and the WS8 page reads "IEC IP67 (Except exposed terminals)".

A split by version ties IP coverage to the version on the shelf, so the alternative is quoted in that same version. An excepted terminal leaves the rating on the body, so the alternative's body seal is what gets compared. Other catalogs word this boundary differently, and how each catalog words its IP67 coverage is set out in an earlier article.

DONGNAN WS Datasheet Columns, Read One by One

After IP coverage, each WS page lists five more columns, and the values change a lot from one WS part to the next.

Columns the DONGNAN page settles

You can match a second source to these five columns on paper before a sample is cut, because each WS page states them per part number. Terminal form covers solder, PCB and wire versions, so the alternative has to come in the version your harness or board already takes. On current, the WS8 is a signal part at 0.1A at 12VDC, so you'll match its alternative on voltage, load type and a contact material made for low-current switching. The WS5's 2mm long stroke needs a comparable overtravel on the alternative. Life and approvals differ between WS parts, so check them against the exact page in production, mechanical and electrical life separately.

Items the drawing settles

Body size and mounting hole positions come from the drawing of the part in production, since the WS pages give the mounting style without dimensions. The WS8 page offers the case without posts or with posts on one or both sides, so the post option is matched before the hole pitch.

Second Sources for DONGNAN WS Parts by Starting Position

Second sources below are grouped under the positions each WS page names.

Door locks

The WS5 page is written for electronic lock actuators and the WS8 page for car side doors, trunks and hoods, so a door lock alternative is a signal-level switch with a sealed body. Powered door detection is covered in door lock position detection in powered car doors.

ZINGEAR G303

ZINGEAR G303 belongs to the automotive line certified to IATF 16949 and is rated 0.1A to 3A, which places the WS8's 0.1A at 12VDC signal point inside its range. ZINGEAR G303-130S00A28 lists Protection Class IP67 at 3A at 12VDC with 500,000 mechanical and 100,000 electrical cycles minimum, the life figures the WS5 page gives. The ZINGEAR G303-130S00A28 uses an A-type square-hole outline without a positioning column, so the WS8 post option is checked on the drawing.

Omron D2EW

Omron's D2EW page describes a lever-free switch "originally developed for automotive door latches" with "water resistance (equivalent to IP67)", which pairs it with a WS8 where the latch cam meets the switch at an angle.

TONELUCK MQS-4

TONELUCK's MQS-4 page lists "the car door and bonnet lock", with IP00 terminals on the MQS-41 and MQS-42 and IP67 on the wired MQS-43, so each WS5 version has an MQS-4 counterpart.

Charging guns

The WS3 detects whether the charging gun is inserted in place and is rated at 2A maximum, so its alternative is a small sealed body carrying a signal at the gun head. A wider comparison is in suppliers compared for charging guns.

ZINGEAR G10B03 and ZINGEAR G306A

ZINGEAR G10B03-150P04A lists IP67 and 3A at 125V, above the WS3's 2A maximum, and names ENEC, UL and CQC on its page for European, North American and Chinese end markets. ZINGEAR G306A integrates a resistor for charging gun mating-in-place detection, in a current-limiting or a diagnostic version, so a WS3 replacement states which version the gun controller reads.

TONELUCK MQS-9C

TONELUCK's MQS-9C page lists "New energy vehicle door lock/charging gun" use with IP67 on the actuation side and IP00 on the terminal side, so it pairs with a terminal-type WS3.

Unionwell G3 and G9

Unionwell describes its G3 for "charging guns/charging piles" and its G9 series for charging guns, both IP67 at series level, with the version confirmed on the datasheet.

Home appliances

The WS1 page lists refrigerators, ice machines and water heaters, and the WS4 page household appliances, so an appliance alternative is matched to those wet positions and to the installed version.

ZINGEAR G5W11 and ZINGEAR G9A05

ZINGEAR G5W11-WZ200-W2 lists IP67 and 5A at 125/250VAC for ice maker full-ice detection and freezer doors, the refrigeration positions on the WS1 page, and marks terminal and lever and outline as customizable, so either WS4 version has a configurable counterpart. ZINGEAR G9A05-200E00AF-300 lists IP67 up to +125°C for heated kitchen positions such as smoothie makers.

Omron D2SW and D2VW

The Omron D2SW datasheet names refrigerators and ice-making equipment, and the D2VW datasheet large-scale home appliances, each IP67 "excluding the terminals on terminal models", so the D2SW pairs with a WS1 and the D2VW with a WS4.

Unionwell G5W11

The Unionwell G5W11 page rates the terminal version IP67 with the terminal not included and the wire version IP67, mirroring the WS4's split by version.

Electric bicycle brakes

DONGNAN's WS8 announcement describes cutting off motor power output when an electric bicycle brakes, so a brake alternative is a sealed signal switch at the brake lever.

ZINGEAR handbrake supply for Shouqu

ZINGEAR G306-150E65BA-400, a derivative of the ZINGEAR G306 sealed platform rated IP67, is in stable mass production on the handbrake of Shouqu electric motorcycles, the brand incubated by Dreame Technology, after Shouqu's full performance verification and complete vehicle adaptation tests. In the lever it triggers the brake lamp, the powertrain cutoff and regenerative braking, the cutoff duty the WS8 page describes, and its compact body with an industry-standard pin layout fits inside the lever housing. A WS8 at a brake lever is therefore compared with a switch already in volume at that position.

Honeywell V15W

The Honeywell V15W datasheet lists "brake position detection, handle bar controls" for ATV and off-road vehicles, with IP67 on leaded versions and 0.1A to 10A, and the V15W product page gives its diagonal mount, so it pairs with a wired WS8.

Sending a WS Replacement Request a Second Source Can Answer

With the WS part number, version and drawing in one request, a second source quotes against the exact part in production, and fitted samples then show how the seal holds up in your housing.

Where a ZINGEAR part is on the shortlist for a WS position, a column-by-column review with ZINGEAR can check it against each row of this table.

FAQ About Replacing DONGNAN Waterproof Micro Switches

Which WS columns change the quoted price of an alternative?

A wire lead version, a special terminal and each added approval change how the alternative is built, so those columns move the quote. Order quantity then sets the price break on the same part number.

Does a DONGNAN KW3A or KW4A switch follow the same matching?

KW3A and KW4A parts are DONGNAN's non-sealed switches, so they're matched on the same columns minus IP coverage, read from the KW page in the same order.

Which DONGNAN website lists the WS datasheets?

The two official DONGNAN sites split the WS pages, with the WS1, WS3 and WS5 on dongnanswitches.com and the WS4 and WS8 on switch-china.com, so a comparison cites the site carrying the WS part in production.

Sources

Standards

International Electrotechnical Commission. IEC 60529:1989+AMD1:1999+AMD2:2013, Degrees of protection provided by enclosures (IP Code): IEC 60529

International Automotive Task Force. IATF 16949:2016, Quality management system requirements for automotive production and relevant service parts organizations: IATF 16949