Rheostat Single Tube Manufacturer,Supplier and Exporter in India
Product Code : EL-SI-8140
Jlab Export is a leading Rheostat Single Tube Manufacturer,and suppliers in India
Rheostat Single Tube (code EL-SI-8140) is a tubular rheostat for controlling current or dividing voltage in school, college and electrical lab circuits. It is wound with heavily oxidised resistance wire on a vitreous enamelled steel tube, the winding is locked in place with ceramic cement, and socket terminals allow either rheostat or potentiometer connection. It is made by Jain Laboratory Instruments Pvt Ltd (JLab) at its works in Ambala, India.
Specifications
| Parameter | Detail |
|---|---|
| Construction | Single tube |
| Tube | Vitreous enamelled steel |
| Winding | Heavily oxidised resistance wire, locked in place with ceramic cement |
| End stands | Robust enamelled die-cast end stands |
| Terminals | Socket terminals, allowing rheostat or potentiometer connection |
| Versions listed | Rheostat Single Tube 4.4 cm and Rheostat Single Tube 5.6 cm |
| Quality check | Each rheostat 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-SI-8140 |
| Manufacturer | Jain Laboratory Instruments Pvt Ltd (JLab) — OEM |
| Country of origin | India (made in Ambala, Haryana) |
How Does It Compare with Other JLab Rheostats?
| Model | Former and wire | Other listed details |
|---|---|---|
| This rheostat (EL-SI-8140) | Vitreous enamelled steel tube; heavily oxidised resistance wire set in ceramic cement | Die-cast end stands; socket terminals for rheostat or potentiometer use; versions 4.4 cm and 5.6 cm |
| Groove Type Rheostat Tube | Thick-wall porcelain or cement pipe with a deeply grooved surface; Eureka wire | Brass slider over the full length; two copper brushes for contact; grooves for convection cooling |
| Rheostat | Single tube, sliding contact | Rated 11 ohm and 3 A; slider runs on an aluminium rod |
| Rheostats (Nichrome Type) | Nichrome resistance wire | Bell terminals; 10, 20, 30, 50 and 100 ohm values |
Choose this single-tube rheostat when you want an enamelled steel former with the winding cemented in place; the groove-type tube adds a ribbed ceramic former for cooling, and the 11 ohm and nichrome models suit buyers who want a rating fixed in the listing.
What Is the Single Tube Rheostat Used For?
Connected as a rheostat, with one end terminal and the sliding-contact terminal in the circuit, it acts as a variable series resistance for setting the current in Ohm’s law, meter-bridge, potentiometer and charging circuits. Connected as a potentiometer, with both end terminals across the supply and the load taken from the sliding contact, it gives a smoothly variable voltage from zero up to the supply voltage — the usual way to plot current–voltage characteristics. The oxide on the wire insulates neighbouring turns from each other, and the vitreous enamel and ceramic cement keep the winding firm when the tube warms in use.
Choose a resistance and current rating that suits the circuit: the rheostat should carry the highest current you expect with the slider at its lowest setting. Do not run it above its rating, leave space around the tube for air to circulate, and let it cool before handling after heavy use.
What to Specify When Ordering
- Version — Rheostat Single Tube 4.4 cm or 5.6 cm.
- Resistance and current — the ohms and amps your circuit needs, as these are not fixed in the listing.
- Quantity — the minimum order is 10 units.
Frequently Asked Questions
What is the rheostat wound on?
Heavily oxidised resistance wire is wound on a vitreous enamelled steel tube and locked in place with ceramic cement. The tube rests on robust enamelled die-cast end stands.
Can it be used as a potentiometer (voltage divider)?
Yes. The socket terminals allow either rheostat connection for current control or potentiometer connection for a variable voltage.
What do 4.4 cm and 5.6 cm refer to?
They are the two versions named in the listing, which does not say which dimension they describe. Confirm the size together with the resistance and current rating in your enquiry.
What resistance and current ratings are available?
The listing does not state them. Send the ohms and amps you need and JLab will confirm a suitable winding.
Who manufactures this rheostat?
Jain Laboratory Instruments Pvt Ltd (JLab) winds and assembles it at its works in Ambala, Haryana, India.
OEM Manufacturer
JLab is the trading name of Jain Laboratory Instruments Pvt Ltd, an electrical and physics lab equipment manufacturer in India, incorporated in 2017 and based on Hargolal Road, Ambala, Haryana. The rheostat is wound and assembled in JLab’s own works rather than bought from a trader, so schools, colleges, dealers and importers buy from the maker; every unit is visually inspected before dispatch, and repeat orders are handled by the same team. JLab holds MSME Udyam registration UDYAM-HR-01-0003849 (manufacturing enterprise) and Importer-Exporter Code 3317504552. It exports worldwide and ships to buyers in every region — for example Switzerland in Western Europe, Lesotho in Southern Africa, Canada in North America, Taiwan in East Asia and Tajikistan in Central Asia. Tender details are on the JLab lab tenders page.
Other Rheostats and Circuit Items
- Groove Type Rheostat Tube — Eureka wire on a grooved porcelain or cement pipe for convection cooling.
- Higher Range Rheostat — Kanthal-wire rheostat with two copper contact brushes.
- Rheostat — a single-tube sliding rheostat rated 11 ohm and 3 A.
- Rheostats (Nichrome Type) — nichrome-wound sliding rheostats in fixed ohm values.
- Rheostat Bank Single Phase — a ventilated bank of porcelain-tube rheostats for AC load work.
- Potentiometer with Spring Type Press Jockey — a slide-wire potentiometer whose driver current is set with a rheostat.
See the full Scientific Instrument range or the Indian Instruments section.
Request a Quote
Quotes come direct from the manufacturer. Use the Add To Cart enquiry button, or send the version, the resistance and current you need, the quantity (minimum 10 units) and your delivery location through the contact page.
Last updated: 8 October 2026
