Higher Range Rheostat Manufacturer,Supplier and Exporter in India
Product Code : EL-SI-8145
Jlab Export is a leading Higher Range Rheostat Manufacturer,and suppliers in India
Higher Range Rheostat (code EL-SI-8145) is a sliding rheostat wound with Kanthal resistance wire, for current control where a higher resistance is needed in physics and electrical engineering labs. The winding sits on a thick-wall porcelain or cement pipe with a deeply grooved, convection-cooled surface, and a slider with two copper brushes travels its full length. It is made by Jain Laboratory Instruments Pvt Ltd (JLab) at its works in Ambala, India.
Specifications
| Parameter | Detail |
|---|---|
| Resistance wire | Kanthal wire, with high stability and strength (used in place of bare Eureka wire) |
| Former | Thick-wall porcelain or cement pipe with a deeply grooved outer surface |
| Cooling | Grooves form air ducts for convection cooling |
| Slider | Moves the full length of the rheostat, quickly and easily |
| Contact | Two copper brushes with a large contact area, giving smooth current control and very little wear |
| 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-8145 |
| 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 | Resistance wire | Former and contact |
|---|---|---|
| This rheostat (EL-SI-8145) | Kanthal | Grooved thick-wall porcelain or cement pipe; full-length slider with two copper brushes |
| Groove Type Rheostat Tube | Bare Eureka (listed as imported) | Same grooved pipe; brass slider with two copper brushes |
| Rheostat Single Tube | Heavily oxidised resistance wire in ceramic cement | Vitreous enamelled steel tube on die-cast end stands; socket terminals |
Pick the Higher Range Rheostat when a circuit calls for more ohms than a copper–nickel winding gives on the same former; the Eureka-wound groove-type tube is the choice where a resistance that hardly drifts with temperature matters more.
What Is the Higher Range Rheostat Used For?
Kanthal is an iron–chromium–aluminium alloy with a considerably higher resistivity than the copper–nickel alloys such as Eureka, and it resists oxidation well at high temperature. Wound on the same grooved former, it therefore gives a higher-resistance rheostat that tolerates warm running. Typical higher-resistance jobs include limiting small currents drawn from higher-voltage DC supplies, field control in DC machine experiments, loading small power supplies and acting as an adjustable voltage divider.
The deep grooves expose more of the winding to moving air, so heat is carried away by convection, while the two copper brushes give the slider a broad, smooth contact that wears the wire very little. Keep the current within the rating, leave space around the tube for air to flow, keep the brushes and slider rod clean, and let the rheostat cool before handling after long use.
What to Specify When Ordering
- Resistance and current — the ohms and amps you need, as the listing does not fix them.
- Quantity — the minimum order is 10 units.
- Companion items — lower-resistance Eureka or nichrome rheostats for the same bench can go on one enquiry.
Frequently Asked Questions
What wire is used in the Higher Range Rheostat?
Kanthal resistance wire, described in the listing as having high stability and strength. It replaces the bare Eureka wire used in the groove-type tube.
Why does Kanthal give a higher range?
Its resistivity is considerably higher than that of copper–nickel resistance alloys, so more ohms fit on the same former.
How is the winding cooled?
It is wound on a thick-wall porcelain or cement pipe with a deeply grooved outer surface; the grooves act as air ducts for convection cooling.
Which resistance values can be supplied?
The listing does not give values or current ratings. Send your requirement and JLab will confirm a suitable winding.
Who manufactures it?
JLab (Jain Laboratory Instruments Pvt Ltd) winds and assembles the rheostat at its works in Ambala, Haryana, India.
OEM Manufacturer
JLab is the trading name of Jain Laboratory Instruments Pvt Ltd, an Indian manufacturer of electrical and physics lab instruments, incorporated in 2017 and based on Hargolal Road, Ambala, Haryana. The Higher Range Rheostat is wound in JLab’s own works, not traded in, so engineering colleges, polytechnics, dealers and importers buy direct from the maker; each unit is visually inspected before dispatch, and repeat orders are handled by the same works. JLab exports worldwide and ships to buyers in every region — for example Cameroon in Central Africa, Bolivia in South America, Tajikistan in Central Asia, the Czech Republic in Eastern Europe and Botswana in Southern Africa. Tender supply is described on the JLab lab tenders page.
Related Rheostats
- Groove Type Rheostat Tube — the Eureka-wound version on the same grooved former.
- Rheostat Single Tube — oxidised wire on a vitreous enamelled steel tube.
- Rheostats (Nichrome Type) — nichrome-wound sliding rheostats in fixed ohm values.
- Rheostat Bank Single Phase — a ventilated bank of porcelain-tube rheostats for AC loads.
- Rheostat — a single-tube sliding rheostat rated 11 ohm and 3 A.
Browse the 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 resistance and current you need, the quantity (minimum 10 units) and your delivery location through the contact page.
Last updated: 8 October 2026
