Knife Switch Manufacturer,Supplier and Exporter in India
Product Code : EL-SLE-4618
Jlab Export is a leading Knife Switch Manufacturer,and suppliers in India
Knife Switch (code EL-SLE-4618) is a hinged switch that controls the flow of electricity in a circuit, used in school and college electrical experiments where students need to open and close a circuit and see its state at a glance. A metal knife on a hinge is lifted out of, or pressed into, a jaw; the hinge and jaw sit on an insulated base and the knife has an insulated hand grip. It is made by Jain Laboratory Instruments Pvt Ltd (JLab) at its works in Ambala, India.
Specifications
| Parameter | Detail |
|---|---|
| Function | Controls the flow of electricity in a circuit (makes and breaks the circuit) |
| Action | Hinged metal lever (knife) lifted from, or placed into, a slot in the jaw |
| Base | Insulated base carrying the hinge and jaw |
| Handle | Insulated hand grip on the knife |
| Quality check | Each switch is visually inspected before dispatch |
| Pack quantity | Each (sold individually) |
| Minimum order quantity | 10 units |
| Dispatch time | Usually 7–10 working days |
| Product code | EL-SLE-4618 |
| Manufacturer | Jain Laboratory Instruments Pvt Ltd (JLab) — OEM |
| Country of origin | India (made in Ambala, Haryana) |
How Does It Compare with Other JLab Knife Switches?
| Model | Listed details |
|---|---|
| This knife switch (EL-SLE-4618) | Hinged metal knife and jaw on an insulated base; insulated hand grip |
| Knife Switch Single Pole Single Throw JLab | Brass poles and knives on a Bakelite base; one of four configurations |
| Knife Switch Double Pole Double Throw JLab | Brass poles and knives on a Bakelite base |
| Single Pole Knife Switch | Plastic base; brass poles and blades for good electrical contact |
Choose this switch for general circuit work where an insulated grip and base are the priority. If your experiment needs a particular configuration — for example double pole or double throw for reversing a current — the listed configurations above state theirs.
What Is the Knife Switch Used For?
Pressing the knife into the jaw completes the circuit; lifting it out opens a clear air gap, so anyone at the bench can see whether the circuit is open or closed. That makes the knife switch a common control in class 10 experiments on Ohm's law and series and parallel circuits, in class 12 practicals with the potentiometer and metre bridge, and in college electrical labs, where the switch is opened between readings to stop wires and resistors from heating. Because the knife and jaw are bare metal, use it only in low-voltage teaching circuits, hold it by the insulated grip, and open it before changing any connection.
What to Specify When Ordering
- Configuration — tell JLab whether you need single or double pole and single or double throw, so the right switch is quoted.
- Circuit current — state the typical current and voltage of your experiments.
- Quantity — the minimum order is 10 units; many labs order one per bench plus spares.
- Other circuit items — plug keys and other circuit accessories can go on the same enquiry.
Frequently Asked Questions
What does a knife switch do?
It controls the flow of electricity in a circuit: closing the knife into the jaw completes the circuit, and lifting it out breaks it.
How is this knife switch built?
A metal lever, or knife, swings on a hinge into a slot in the jaw. The hinge and jaw are fixed to an insulated base, and the knife has an insulated hand grip.
Is it single pole or double pole?
This listing does not state the number of poles or throws. JLab lists single-pole and double-pole, single-throw and double-throw knife switches separately, so specify the configuration you need.
Can it be used on mains voltage?
It is intended for electrical experiments, and its current and voltage ratings are not given here. Open knife switches have exposed metal, so use them in low-voltage teaching circuits and ask JLab before using one for anything else.
How does a knife switch differ from a plug key?
Both make and break a circuit. The knife switch uses a hinged lever whose position shows the circuit state at a glance, while a plug key does the same job with a removable plug.
Who manufactures this knife switch?
Jain Laboratory Instruments Pvt Ltd (JLab) makes it at its works in Ambala, Haryana, India.
OEM Manufacturer
JLab is the trading name of Jain Laboratory Instruments Pvt Ltd, a manufacturer of electrical teaching apparatus and physics lab equipment in India, incorporated in 2017 and based on Hargolal Road, Ambala, Haryana. Knife switches are assembled at JLab's own works rather than resold from a trader, so schools, colleges, dealers and importers buy them factory-direct, each switch is visually inspected before dispatch, and repeat orders are handled by the manufacturer. JLab exports worldwide and ships to buyers in every region, such as Chad in Central Africa, the Maldives in South Asia, Luxembourg in Western Europe, Romania in Eastern Europe and Libya in North Africa. Tender buyers can refer to the JLab lab tenders page.
Switches and Circuit Accessories
- Plug Key — makes or breaks a circuit with a removable plug.
- Knife Switch Single Pole Single Throw JLab — brass knife on a Bakelite base.
- Knife Switch Double Pole Double Throw JLab — for switching two circuits or reversing a current.
- Knife Switch Double Pole On Base — double-pole switch on a plastic base with brass blades.
Browse the School Lab Equipment range for more electricity apparatus.
Request a Quote
Quotes come direct from the manufacturer. Use the Add To Cart enquiry button on this page, or send the configuration and quantity you need (minimum 10 units) and your delivery location through the contact page.
Last updated: 4 October 2026
