Rheostat 30 Ohm Manufacturer,Supplier and Exporter in India
Product Code : EL-PL-12413
Jlab Export is a leading Rheostat 30 Ohm Manufacturer,and suppliers in India
Rheostat 30 Ohm (code EL-PL-12413) is a sliding rheostat with a 30 ohm winding and a double-contact block that runs on a brass guide rod. Three insulated lock-type brass terminals, one on the slider and one at each end of the winding, let it serve either as a variable resistor or as a potential divider, and the total resistance and maximum current are marked on the slider. It is manufactured by JLab in Ambala, India.
Specifications
| Parameter | Detail |
|---|---|
| Model | JL349/073 |
| Resistance | 30 ohm |
| Slider | Contact block on a brass guide rod, tightened with a brass screw; double contact system |
| Terminals | Three lock-type brass socket terminals, insulated |
| Connections | One terminal to the sliding contact, two to the ends of the winding |
| Marking | Total resistance and maximum current marked on the slider |
| Quality check | Each rheostat is visually inspected before dispatch |
| Pack quantity | Each (sold individually) |
| Minimum order quantity | 10 units |
| Dispatch time | Usually 4–6 working days |
| Product code | EL-PL-12413 |
| Manufacturer | Jain Laboratory Instruments Pvt Ltd (JLab) — OEM |
| Country of origin | India (made in Ambala, Haryana) |
Two Ways to Connect It
As a rheostat, use one end terminal and the slider terminal in series with the load. Moving the slider changes the length of winding in the circuit, and with it the current; at one end of travel almost none of the winding is in circuit. As a potential divider, connect the supply across the two end terminals and take the output between the slider and one end. The output then rises smoothly from zero to the full supply voltage as the slider moves along, which is how a variable voltage is fed to a resistor for V–I readings.
Staying Within the Marked Current
Keep the current below the maximum marked on the slider. This matters most in rheostat use with little of the winding in circuit: the series resistance is then small, so the current rises, and the short length in use carries all of it. Watch the ammeter while moving the slider, and switch off between readings so the winding does not run hot.
Related Current Electricity Items
- Rheostat — the same sliding design with a 50 ohm winding.
- Potentiometer, 10 wire — needs a rheostat to set the steady current from the driver cell.
- One Way Key — brass plug key for switching the circuit on and off.
- Ohm’s Law Apparatus — boxed V–I circuit with its own wire-wound potentiometer.
Further keys, meters and resistance boxes are available in Physics Lab.
Request a Quote
Get in touch via the contact page or click Add To Cart; include the number of rheostats, model JL349/073 and where they should be shipped.
Last updated: 26 October 2026
