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Waterproof LW28 cam switch box for selector, transfer, reversing, and multi-step control. Compare HF boxes, current groups, drawings, and quote details.
Pick the current group, HF box size, and cam program first. For transfer, reversing, or multi-step control, send the wiring diagram before quotation.
LW28 puts a cam switch core inside a waterproof wall box, so selector or transfer control can sit near the equipment.
Protects the switch core, handle, cable entry, and mounting points in one wall-mount enclosure.
Shows the selected ON/OFF, selector, transfer, or step position at the front of the box.
Confirm current, contact program, positions, enclosure, cable entry, quantity, and certificate requirement.
Use this table for front size, depth, cable entry, and mounting spacing. Check section count when extra contact blocks are added.
| Model | A | B1 | B2 | D1 | D2 | D3 | E | Sections |
|---|---|---|---|---|---|---|---|---|
| LW28-20 | 68.5, 113 | 46, 78, 72, 123 | 25.5, 35.5 | 18, 27 | 21 where applicable | 5 | 44, 78 | 1-2 to 1-11 |
| LW28-25 / 32F | 68.5, 113 | 46, 78, 72, 123 | 25.5, 35.5 | 18, 27 | 21 where applicable | 5 | 44, 78 | 1-2 to 1-8 |
| LW28-63 | 113 | 72, 123 | 35.5 | 27 | 21 | 5 | 78 | 1-3 to 1-6 |
| LW28-125 / 160 | 137 | 171 | 35.5 | 27 | 21 | 5 | 78 | 1-4 |
Start with current group, contact program, position count, and HF box code. Compare the waterproof box guide, SHP boxes, LW28 series, or IEC 60947-3.
| Item | Catalogue reference | Selection note |
|---|---|---|
| Example model code | LW28-20/D0414/2/HF0, LW28-63/D1050/4/HF3, LW28-125/D1050/4/HF5 | Confirm current group, contact program, number of positions, and enclosure code. |
| Box code | HF0 / HF3 / HF5, plus GS04 variants shown | Match enclosure size and operator projection. |
| Contact program | D0414, D1050 and custom cam programs | Send a circuit diagram for transfer, selector, or multi-step functions. |
| Cable entry | D1 / D2, C1 / C2 and 2-D3 references | Use these values for gland layout and cable routing. |
| Mounting | A, B1, B2, E and section count | Check wall mounting clearance before approval. |
Confirm the datasheet, drawing, wiring diagram, rated voltage, contact program, terminal numbering, certificate copy, and enclosure code before production.
| Parameter | Value |
|---|---|
| Product Type | Waterproof enclosed rotary cam switch box |
| Cam Switch Core | LW28 series universal rotary cam switch |
| Current Range | 20A, 25A, 32F, 32A, 63A, 125A, and 160A catalogue dimension groups |
| Box Types | HF0, HF3, HF5, and GS04 enclosure styles shown in the catalogue |
| Function | ON/OFF, selector, transfer, multi-step cam-switch programs |
| Mounting | Surface wall mounting |
| Material / Enclosure | Waterproof wall-mount enclosure shown in catalogue; confirm material, box code, and outdoor exposure by project |
| Standard | IEC 60947-3 switching function, final program by order |
| Certifications | LW28 series certificates may include CE, CB, and TUV depending on selected model; confirm certificate copy before order |
| Contact Program | D0414, D1050, selector, transfer, reversing, and custom cam programs by order |
| Cable Entry | D1, D2, C1, C2, and 2-D3 drawing references should be checked for gland layout |
| Documents | Datasheet, dimension drawing, and wiring diagram can be requested for approval |
Shieldhz is Zhejiang Shihe Electric’s export brand. Founded in 2014 in Zhejiang, China, the factory supports ISO 9001-managed production and exports to 50+ markets.
Match LW28 boxes to selector, transfer, reversing, and multi-step control. For simple ON/OFF isolation, compare isolator switches first.
For manual/auto, pump 1/pump 2, or local/remote selector points outside the main panel.
For machines that need the rotary operator close to the equipment, not hidden inside the cabinet.
For changeover, reversing, and step programs where the wiring sequence is already defined.
For utility cabinets, service panels, farm equipment, and outdoor machines away from the control room.
Choose LW28 when the box needs selector, transfer, reversing, or step-control contact logic. Send the wiring diagram or truth table.
Compare SHP waterproof isolator boxes when cable room and enclosure size matter more than cam logic.
Compare SH30 weatherproof isolators for compact pump, HVAC, or machine service points.
Use LW28 when the function requires cam-switch logic such as multi-step, selector, transfer, reversing, or custom contact sequences. Use SHP or SH30 when the project only needs standard ON/OFF isolation. The waterproof LW28 box is best when the enclosure must protect both the switch body and a defined cam program.
Yes. HF0, HF3, and HF5 identify enclosure formats matched to different LW28 current ratings, contact programs, section counts, and cable entry needs. The right box code should be selected after checking the current group, handle projection, contact stack depth, and mounting space in the dimension table.
Yes. LW28 cam switches are ordered by current rating, pole/contact program, handle position logic, switching angle, and terminal sequence. For custom selector, transfer, or reversing functions, send a wiring diagram, truth table, or old switch program so Shieldhz can confirm the cam arrangement before production.
No. This page is only for LW28 mounted in a waterproof enclosure. Use the LW28 series page when you need the rotary cam switch family itself, and use this waterproof box page when the same cam-switch logic must be installed in a surface-mount enclosure for outdoor or wet-area use.
They are LW28 waterproof cam switch box size codes in the catalogue. HF0 is used for compact enclosed builds, HF3 for mid-size boxes, and HF5 for larger configurations. The code should be checked together with current rating, section count, D1/D2 cable entry, and the required front legend.
Provide rated current, rated operational voltage, poles, contact program, handle positions, switching angle, enclosure size, cable entry, quantity, target market, and certificate requirement. A circuit diagram is strongly preferred for transfer, reversing, and multi-step functions because the contact sequence determines the actual switch build.
It can be used for ON/OFF functions, but SHP or SH30 is usually simpler for standard isolation. LW28 is most valuable when cam-switch logic or multiple positions are required. If the project is a basic lockable disconnect, Shieldhz can help compare the simpler isolator route before quoting LW28.
Send current rating, contact program, positions, box code, cable entry, quantity, and target market. Shieldhz will confirm the enclosure, wiring, drawings, MOQ, and lead time.
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