Knife Switch – Single Pole Manufacturer,Supplier and Exporter in India

Knife Switch – Single Pole (Product Code: SLE/PHY/197) is a single-pole, single-throw (SPST) knife switch on a plastic base used to turn one path of a circuit on and off in school and college electricity practicals. It comes from a range of knife switches made for electricity circuits, and its pole and blade are brass so that the closed switch makes a good electrical connection. It is supplied by Jain Scientific Equipments Pvt Ltd (ScienceLab), Ambala, India.

Key Details

What Is the Single Pole Knife Switch Used For?

Wired in series with the cell or power supply, the switch acts as the main key of a student circuit: resistance measurements, meter bridge and potentiometer set-ups, lamp and motor circuits all need a way to break the current between readings. Opening the switch after each reading stops a resistance wire from warming up and drifting in value, and it saves dry cells from running down while students record their results.

For dependable readings, push the blade fully home between the brass contacts and keep the contact faces clean and free of tarnish. Because the brass parts are exposed, use it only in low-voltage circuits, not for mains switching. As everyday school physics lab equipment in India, a few spare switches per laboratory make it easy to build several circuits at once.

What to Specify When Ordering

• Single pole (this item) or the double-pole, double-throw version from the same range
• The number of switches needed per bench or per laboratory
• Any connecting leads, clips or rheostats you want quoted with the switches

Supplier

Jain Scientific Equipments Private Limited, which trades as ScienceLab, supplies this single pole knife switch from Ambala, Haryana, India to schools, colleges, laboratory dealers and importers. One enquiry can cover the switch together with the leads, rheostats and other circuit parts a physics laboratory usually orders alongside it.

If you need matching switches for a repeat order, or want the double-pole version from the same range on the same quotation, ask us when you enquire. You can learn more on the ScienceLab company profile.

Related Physics Lab Equipment

These items complete a basic switched circuit on the student bench:

• Knife Switch, Double Pole — for reversing current or changing over between circuits
• Contact Key (Push Switch) — closes the circuit only while it is pressed
• Rheostat — varies the current in the switched circuit
• Crocodile Clips & Leads — quick connections to the switch terminals
• Lamp Holder — a simple lamp load for on/off demonstrations

More circuit components are listed under Physics Lab Equipment.

Frequently Asked Questions

What type of switch is the Knife Switch – Single Pole?
The Knife Switch – Single Pole is a single-pole, single-throw (SPST) knife switch, so one brass blade opens or closes one circuit path. It is mounted on a plastic base and suits simple on/off control in student electricity circuits.

What are the contacts of the single pole knife switch made of?
The pole and blade of the Knife Switch – Single Pole are made of brass to ensure good electrical connections. Keeping the brass contact faces clean and closing the blade fully gives the most reliable contact during experiments.

When should I choose a single pole rather than a double pole knife switch?
Choose the Knife Switch – Single Pole when a circuit only needs switching on and off. For reversing a current or moving one supply between two circuits, the double-pole, double-throw version from the same range is the better choice.

Can the Knife Switch – Single Pole be used on mains voltage?
No. The Knife Switch – Single Pole is intended for low-voltage electricity circuits in school and college laboratories. Its brass pole and blade are exposed, so it should not be used for switching mains-voltage equipment.

Who supplies the Knife Switch – Single Pole?
The Knife Switch – Single Pole is supplied by Jain Scientific Equipments Pvt Ltd (ScienceLab), Ambala, Haryana, India, to schools, colleges, dealers and importers in India and international markets. It can be quoted together with the other circuit components needed for the same practicals.

What should a quotation request for knife switches include?
A quotation request for the Knife Switch – Single Pole should state the quantity, whether any double-pole switches are needed as well, the leads or other components to be included, and the delivery location, so the offer can be prepared in one step.

Request a Quote

Prices for the Knife Switch – Single Pole are quoted on request. Use our contact page or add the switch to the enquiry cart with the other circuit items your laboratory needs, and ScienceLab will send one combined offer.

Last updated: 24 September 2026