Light Switch Buying Guide: Single-Pole, 3-Way and Combination

Buyer information, not installation instructions. Requirements depend on the adopted local code and exact product. Electrical work and site diagnosis should be performed by qualified professionals.

Start with the control arrangement: one light from one location, one light from two locations, or separate loads from one device. Then select the paddle or toggle style, voltage rating and wallplate.

Choose the switching function

Single-pole switches provide ordinary on/off control from one location. DS15 is our paddle example; T15 is the toggle version. [Source]

A conventional two-location circuit uses two 3-way switches to control the same light. “3-way” describes that arrangement, not three buttons. Review DS15.3 or T15.3 with the project electrician. [Source]

DS1502 and DS1503 put two or three single-pole rockers in a single-gang device. They control separate loads from that position.

Compare the six models

These ratings come from our catalog, page 25, and the model records. The DS paddle range and T toggle range have different voltage ratings.

Match the load and wallplate

Include the supply voltage and the connected lamp, driver or other equipment in the inquiry. A common 15A marking does not make the 125V and 120/277V versions interchangeable.

For combination models, do not multiply the 15A rating by the rocker count. Request the permitted per-circuit and combined-load limits for the device.

For brightness control, use a dimmer matched to the lamp or driver. The six switches in this table provide on/off operation.

Paddle and toggle devices need different wallplate openings. DS1502 and DS1503 each use one device position; choose the plate from the device drawing rather than the number of rockers.

Approve the switch and plate together under the intended lighting. Record the plate model, finish and whether it is packed with the switch or separately.

Match the model to its documents

The supplied October 18, 2024 report E528137-20241016 names DS15, DS15.3 and T15. T15.3 is not named in that file; request its corresponding record. That omission alone does not establish whether the product is certified.

The DS1502 and DS1503 product records cite ETL file E5033770. We do not yet have the matching ETL certificate PDF in this library. It needs its own document check.

Confirm current listing status and the ordered configuration, then keep the document references with the approved sample.

Prepare the order lines

• Full model, paddle or toggle style, and switching function.
• Control locations and the load assigned to each combination rocker.
• Supply voltage and connected equipment details.
• Switch finish, wallplate model and approved pairing.
• Quantity, destination and requested delivery date.
• Pack format, labels and authorized artwork.
• Model documents and approved installation instructions.

Split quantities by model and finish. If the choice is still open, describe the required control arrangement so it can be reviewed before quotation.

Mapping the six models to a circuit diagram

DS15 is the paddle single-pole. DS15-3 is the three-way version of the same paddle. T15 and T15-3 are the toggle equivalents for projects that keep the older look. DS1502 and DS1503 put two and three rockers on one strap. That is six models, and only four of them are single-pole.

A three-way circuit needs two three-way devices, one at each end, and the pair is ordered together. A common mistake is to specify one DS15-3 for a hallway and discover at installation that the second position was quoted as a DS15. The circuit will not work with one of each, and the fix costs a second delivery rather than a second device.

Combination devices are not multi-gang devices. DS1502 controls two loads from one strap, but it still occupies one gang. The wallplate that fits it is a single-opening plate, not a two-gang plate. We see this reversed in purchase orders regularly, and it is the reason a plate dimension check belongs next to the switch line.

Voltage ratings differ by model as well. Some entries are listed at 125 V and others at 120/277 V, and the two are not substitutes in a commercial panel. Read the rating on the line you are ordering, not on the family page.

For a mixed order, we build the list by circuit: single-pole locations first, three-way pairs second, combination locations third. Sorted that way, the quantity per model falls out of the drawing and the plate count follows without a second pass.