---
product_id: 185477257
title: "SPDT Knife Switch (Single Pole Double Throw)"
brand: "rsr"
price: "£6.44"
currency: GBP
in_stock: true
reviews_count: 2
url: https://www.desertcart.co.uk/products/185477257-spdt-knife-switch-single-pole-double-throw
store_origin: GB
region: United Kingdom
---

# Compact 4.1" x 1.36" x 1" footprint Ultra-lightweight at 1.14 oz Precision-engineered metal build SPDT Knife Switch (Single Pole Double Throw)

**Brand:** rsr
**Price:** £6.44
**Availability:** ✅ In Stock

## Summary

> ⚡ Switch Smart, Switch Sleek – Power Control in Your Palm!

## Quick Answers

- **What is this?** SPDT Knife Switch (Single Pole Double Throw) by rsr
- **How much does it cost?** £6.44 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co.uk](https://www.desertcart.co.uk/products/185477257-spdt-knife-switch-single-pole-double-throw)

## Best For

- rsr enthusiasts

## Why This Product

- Trusted rsr brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Compact Powerhouse:** Small form factor fits perfectly into tight spaces without compromising performance.
- • **Light as a Feather:** Weighing just over an ounce, it’s engineered for efficiency without bulk.
- • **Seamless Circuit Control:** Effortlessly toggle between two circuits with the reliable SPDT mechanism.
- • **Durable Metal Construction:** Robust metal design ensures longevity and dependable operation under pressure.
- • **User-Friendly Binding Posts:** Easy access binding posts streamline installation and maintenance.

## Overview

The SPDT Knife Switch by RSR Electronics is a compact, lightweight, and durable metal switch designed for precise single pole double throw circuit control. Measuring just 4.1" x 1.36" x 1" and weighing 1.14 ounces, it features small binding posts for easy access, making it an ideal choice for professionals seeking reliable and space-efficient electrical switching solutions.

## Description

Single Pole Double Throw (SPDT) knife switch Features small screw-type binding posts for easy access to all positions Measures 2.98" x 1.36" x 1.15" (not including the switch handle) Binding screws have a 3.8mm diameter and extend 7.7mm from the base Plastic construction. Weighs 1 ounce. Two mounting holes about 0.12" apart.

## Features

- Single Pole Double Throw (SPDT) knife switch
- Features small binding posts for easy access to all positions
- Measures 4.1" x 1.36" x 1"
- Weighs 1.14 ounces

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Manufacturer | RSR ELECTRONICS |
| Part Number | 17KSSPDT |
| Item model number | 17KSSPDT |
| Is Discontinued By Manufacturer | No |
| Color | Black |
| Style | Electronic |
| Material | Metal |
| Item Package Quantity | 1 |
| Number Of Pieces | 1 |
| Measurement System | Imperial |
| Batteries Included? | No |
| Batteries Required? | No |

## Images

![SPDT Knife Switch (Single Pole Double Throw) - Image 1](https://m.media-amazon.com/images/I/71TGmBF1iRL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Excellent Single Pole Double Throw Knife Switch
*by J***E on February 28, 2021*

Just what I was looking for. Well made and durable and arrived quickly. Very happy with this purchase

### ⭐⭐ Made of weak metal that bends out of shape
*by A***R on June 9, 2017*

These knife switches are poor quality. They are made of weak metal and some arrived bent. The metal switch and metal seat for the switch connections needed to be pressed forcefully against a hard surface to get them to align correctly so that the switch would function. I'm not confident that these switches can handle regular laboratory use.

## Frequently Bought Together

- SPDT Knife Switch (Single Pole Double Throw)
- AXLIZER Double Pole Double Throw Electrical Switch, Knife Switch, Electricity Experimental Equipment, Teaching Instrument Used to Disconnect Two Simultaneous Electrical Connections

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**Shop now:** [https://www.desertcart.co.uk/products/185477257-spdt-knife-switch-single-pole-double-throw](https://www.desertcart.co.uk/products/185477257-spdt-knife-switch-single-pole-double-throw)

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*Product available on Desertcart United Kingdom*
*Store origin: GB*
*Last updated: 2026-05-16*