Modular vs Normal Switches: What Actually Changes?
The difference between a modular switch and a normal switch is how the board is built. A modular switch is a module that clips into a frame behind a plate, so each switch can be swapped on its own and the plate chosen separately. A normal (conventional) switch is fixed to a sheet or surface box, so the board is one unit. We make both, modular under KEMPS and VIZA and conventional under VIYONA, so below is a straight comparison with real prices from our catalogue.
Key takeaways
- Modular — switches clip into a frame; plates sized 1M to 18M; replace one switch without touching the rest.
- Normal / conventional — switches fixed to a board or surface box; cheapest to fit, harder to change later.
- “Piano switch” is a style, not a type. Our VIZA catalogue lists its 1M modular switches as piano switches.
- Cost — the switch itself costs about the same; the plate and box are where modular adds cost.
- ⚠ Either type is only as safe as its rating and wiring. Check the rating and the ISI mark, and have a licensed electrician fit it.
Modular switch vs normal switch: the short answer
A modular switch is built as a separate module, sized in standard units called modules (1M, 2M), that clips into a metal or plastic frame fixed to a concealed box in the wall. A cover plate goes on top. Because each module is independent, a single faulty switch can be unclipped and replaced, and the plate can be changed for a new finish without rewiring.
A normal switch, also called a conventional or non-modular switch, is fixed to a sheet, a wooden plate or a surface box. The switches and sockets form one board. That makes it cheap and quick to fit, but changing one part often means disturbing the rest, and the look is fixed.
We manufacture both in Mumbai: modular switches under our KEMPS and VIZA series, and conventional switches, surface switches and wooden surface plates under VIYONA. So this is not a pitch for one side. It is what each is good at.
How each type is built
A modular board has four parts: the concealed box in the wall, a frame (the grid plate), the switch and socket modules that clip into it, and the cover plate. The plate is sized by how many modules it holds: 1M to 18M. Our modular plate sizes guide covers every size and its dimensions.
A conventional board is simpler: switches and sockets mounted on one sheet over a box, or in a surface box on the wall. Our VIYONA range includes surface one-way switches, bed switches, and 5″ × 5″ and 5″ × 7″ wooden surface plates.
If you are unsure which you have: a modular plate snaps off to show a frame with switches clipped into it. A conventional board shows switches screwed to a single sheet.
| Modular | Normal / conventional | |
|---|---|---|
| Construction | Modules clip into a frame behind a plate | Switches fixed to a sheet or surface box |
| Replace one switch | Unclip one module | Often disturbs the whole board |
| Plate sizes | 1M to 18M | Fixed board or surface plate |
| Finishes | White, metallic, wood, glass, acrylic | Mostly white or wooden |
| Switch cost | From ₹56 (VIZA V101) | From ₹34 (VIYONA surface) |
| Extra cost | Plate and box, from ₹55 | Board or surface box |
| Best for | New homes and renovations | Repairs, utility rooms, surface wiring |
Is a piano switch the same as a modular switch?
Often, yes. “Piano switch” describes the look: a flat, wide rocker that sits flush like a piano key. It is a style, not a construction. In our own VIZA catalogue, the 1M modular switches are listed as piano switches: the VIZA V101 10A 1-way piano switch is a modular module that clips into a VIZA frame.
So when someone compares “modular vs piano”, the real question is usually modular vs the older conventional board, whatever the rocker looks like. Our guide to types of electrical switches covers the other styles.
Each switch is a module; replace one, change the plate any time.
One fixed board; cheapest to fit, harder to change.
Our VIZA 1M modular switches are catalogued as piano switches.
Safety comes from the rating, the ISI mark and the wiring.
Safety and ratings: does modular mean safer?
Not automatically. What makes a switch safe is its current rating, its build quality and the wiring behind it, and both modular and conventional switches can be well or badly made. Look for the ISI mark and the rating printed on the switch. Our switches are made to IS 3854 under ISI licence CM/L-7567794.
Modular boards do have practical safety advantages. Each module is enclosed, the terminals sit inside the module body, and the plate covers everything with no exposed screws on the face. A worn switch can be replaced on its own before it becomes a hazard. Conventional boards with exposed screw heads or cracked sheets are where we see problems in older homes.
A warm switch, a burning smell or sparking at any switch, modular or not, means switch off the MCB and call an electrician. See switch getting hot or socket sparking.
Replacing one switch: where modular wins
On a modular board, a failed switch is a small job: switch off the circuit, remove the plate, unclip the module, move the wires to the new module, clip it back. The rest of the board is untouched. The new module has to fit the frame, which in practice means the same range.
On a conventional board, the switch is often fixed to the sheet, and a cracked or yellowed sheet means replacing the whole board. Our step-by-step guide to replacing a switch in a switch board covers both, with the safety steps first.
What each costs: real MRPs
The switch is not where the difference lies. A 1-way switch costs about the same whichever type you choose. From our catalogue: ₹34 for a VIYONA surface 1-way switch, ₹56 for a VIZA V101 10A piano (modular) switch, ₹65 for a KEMPS K101 10AX modular switch in white, and ₹74 for a VIYONA 16A 1-way switch with ISI mark.
MRP of a 1-way switch by type (our current catalogue)
MRPs as printed in our current catalogue. Ratings differ between these switches, so compare like for like when buying.
Modular adds cost in the plate and box. A VIZA Decore white plate runs from ₹55 for 1M to ₹110 for 6M and ₹270 for 18M; premium finishes cost more.
VIZA Decore white plate MRP by size
Decore plates, white, from our current catalogue. Metallic, wood, glass and acrylic plates are priced higher.
Looks and finishes
This is where modular pulls clearly ahead. Because the plate is separate, the same switches can sit behind a white, metallic, wood, glass or acrylic plate, and the plate can be changed years later without touching the wiring.
A conventional board’s look is fixed when it is fitted. For a home being renovated, that is usually the deciding factor. Our plate finishes comparison and switch board colour guide go through the options.
Planning a board? The plate size calculator tells you which plate fits the switches and sockets you need.
When a normal switch still makes sense
Conventional switches are not obsolete. A bed switch on a cord, a surface switch in a utility room or on a temporary site, or a quick repair in a rental where the whole board is not being replaced are all sensible uses. They are cheaper to fit and need no concealed box.
We make these under VIYONA switches and sockets, including the 16A 1-way and 2-way switches with ISI mark and a range of combined switch-socket units.
Which should you choose?
For a new home or a renovation, choose modular: the running cost is the same, each switch is replaceable on its own, and the look can change later. For a quick repair, a utility area or a surface-wired room, a conventional switch is the practical choice.
If you are going modular, how to choose a modular switch brand covers what to check, and our KEMPS and VIZA switch pages list every module with its MRP.
FAQs
What is the difference between a modular switch and a normal switch?
Is a piano switch modular?
Are modular switches more expensive?
Are modular switches safer than normal switches?
Can I replace a normal switch board with a modular one?
Do you make both modular and conventional switches?
Why buyers choose Vinayak Electricals
- Modular (KEMPS, VIZA) and conventional (VIYONA) switches, both made in-house in Mumbai.
- Switches made to IS 3854 under ISI licence CM/L-7567794.
- MRPs published openly in our catalogue, code by code.
- Plates from 1M to 18M in white, metallic, wood, glass and acrylic finishes.
- Sold through dealers across India; dealers can order from us directly.
- Over 30 years manufacturing electrical goods; ISO 9001:2015 certified.
