> **Source:** Core Electronics is an Australian maker-electronics retailer and manufacturer based in Newcastle, NSW, run by a team of makers and educators. We design and manufacture our own product lines (PiicoDev, CE originals) and are official retailers for iconic maker and industrial brands including Raspberry Pi, Arduino, Adafruit, SparkFun and DFRobot. Orders ship Australia-wide from our Newcastle warehouse. Prices are in AUD and include GST. Pricing, stock and dispatch on this page are generated from the store's live catalog. Full machine-readable index: https://core-electronics.com.au/llms.txt

# Mini Snap-Action Switch with 13.5mm Lever: 3-Pin, SPDT, 1A

**Type:** Product page · **SKU:** POLOLU-1528 · **Brand:** [Pololu](https://core-electronics.com.au/brands/pololu-australia)
**Page:** https://core-electronics.com.au/mini-snap-action-switch-with-13-5mm-lever-3-pin-spdt-1a.html ([markdown](https://core-electronics.com.au/mini-snap-action-switch-with-13-5mm-lever-3-pin-spdt-1a.html.md))

This miniature single-pole, double-throw (SPDT) momentary switch can be used as a general-purpose micro switch or as a small tactile bump sensor for your robot. The switch body dimension is 12.8 × 6.0 × 6.5 mm, and the lever arm is 13.5 mm long.

## Pricing

- **Price:** $2.30 (inc GST) — $2.09 AUD, exc GST
- **Quantity discounts:** 10+ $2.01 (exc GST) · 25+ $1.95 (exc GST)

## Availability & dispatch

- In stock, ships same business day if ordered before 2PM (Australia/Sydney).
- We can dispatch 9 today, and up to 2100 more in 4–7 days.

## How to buy

- **Build a cart:** compose `https://core-electronics.com.au/cart/link?items=POLOLU-1528:1` (comma-separated SKU:qty pairs) and share the link. Opening it shows a confirmation page with live pricing and stock before anything is added to the cart.
- **Verify the cart first:** fetch `https://core-electronics.com.au/cart/link/POLOLU-1528:1.md` for live line prices (inc & exc GST, quantity discounts applied), stock and dispatch estimates, and totals. Append `/to/{AU-postcode}` (or `/to/{country-code}:{postcode}`) before `.md` for delivery options and prices to that destination. Unknown, retired, or out-of-stock SKUs are flagged. (Query form `cart/link.md?items=...` also works but some robots parsers refuse query strings here.)
- **Checkout** is completed on-site and includes a captcha at the payment step. Share the cart link; checkout takes it from there.
- **Search the catalogue:** `https://core-electronics.com.au/search/{query}.md` (URL-encode the query; pages 2-3 at `search/{query}/{page}.md`; `search.md?q=` also works)
- **Payment methods, purchase orders, policies and contact details:** https://core-electronics.com.au/llms.txt
## Description

This miniature single-pole, double-throw (SPDT) momentary switch can be used as a general-purpose micro switch or as a small tactile bump sensor for your robot. The switch body dimension is 12.8 × 6.0 × 6.5 mm (0.50" × 0.24" × 0.26"), and the lever arm is 13.5 mm (0.53") long. This three-pin switch can also be used as a two-pin single-pole, single-throw (SPST) switch that is open or closed by default, depending on which two pins are used.

| [![](https://core-electronics.com.au/attachments/localcontent/0J9675_605680428cf.jpg)](https://core-electronics.com.au/attachments/localcontent/0J9675_87070296ed0.png) |
|---|
| Dimensions (in mm) of mini snap-action switch with 13.5mm lever. |

For a more sophisticated tactile sensor, see Pololu's [force-sensing resistors](https://core-electronics.com.au/force-sensing-resistor-0-6-diameter-circle.html).

**People often buy this product together with:**

| [![Mini Pushbutton Switch: PCB-Mount, 2-Pin, SPST, 50mA (5-Pack)](https://core-electronics.com.au/attachments/localcontent/0J1997_24347824d8.jpg)](https://core-electronics.com.au/mini-pushbutton-switch-pcb-mount-2-pin-spst-50ma-5-pack.html) | [Mini Pushbutton Switch: PCB-Mount, 2-Pin, SPST, 50mA (5-Pack)](https://core-electronics.com.au/mini-pushbutton-switch-pcb-mount-2-pin-spst-50ma-5-pack.html) |
|---|---|

| [![Snap-Action Switch with 16.7mm Lever: 3-Pin, SPDT, 5A](https://core-electronics.com.au/attachments/localcontent/0J2201_33991dec13.jpg)](https://core-electronics.com.au/snap-action-switch-with-16-7mm-lever-3-pin-spdt-5a.html) | [Snap-Action Switch with 16.7mm Lever: 3-Pin, SPDT, 5A](https://core-electronics.com.au/snap-action-switch-with-16-7mm-lever-3-pin-spdt-5a.html) |
|---|---|

| [![Snap-Action Switch with 50mm Lever: 3-Pin, SPDT, 5A](https://core-electronics.com.au/attachments/localcontent/0J2202_2749f63037.jpg)](https://core-electronics.com.au/snap-action-switch-with-50mm-lever-3-pin-spdt-5a.html) | [Snap-Action Switch with 50mm Lever: 3-Pin, SPDT, 5A](https://core-electronics.com.au/snap-action-switch-with-50mm-lever-3-pin-spdt-5a.html) |
|---|---|

**Dimensions**

 | Size: | 12.8 × 5.8 × 6.5 mm |
|---|---|
| Weight: | 0.6 g |

## Images

- [Product image 1](https://core-electronics.com.au/media/catalog/product/p/o/pololu-1528-1.jpg)