Resistance Substitution Box Manufacturer,Supplier and Exporter in India
Product Code : EL-SI-8097
Jlab Export is a leading Resistance Substitution Box Manufacturer,and suppliers in India
Resistance Substitution Box (code EL-SI-8097) is a switched box of 12 radio-type resistors in standard preferred values from 100 ohms to 470 kilo-ohms, used in electronics and physics labs to try different resistor values in a circuit without soldering. A rotary switch selects each value, the steps rise in a ratio of roughly 1:2, and connections are made through 4 mm sockets. It is made by Jain Laboratory Instruments Pvt Ltd (JLab) at its works in Ambala, India.
Specifications
| Parameter | Detail |
|---|---|
| Resistors | 12 radio-type resistances in standard preferred values |
| Range | 100 ohms to 470 kilo-ohms |
| Step ratio | Approximately 1:2 between successive values |
| Selection | Rotary switch |
| External connection | 4 mm sockets |
| Quality check | Each box 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-8097 |
| Manufacturer | Jain Laboratory Instruments Pvt Ltd (JLab) — OEM |
| Country of origin | India (made in Ambala, Haryana) |
How Does It Compare with the JLab Decade Resistance Box?
| Model | How values are set | Listed accuracy | Typical use |
|---|---|---|---|
| This substitution box (EL-SI-8097) | Rotary switch over 12 preferred values, 100 ohms to 470 kilo-ohms | Not stated | Trying component values in electronic circuits |
| Resistance Box Constantan & Manganin | Eleven-position decade switches | ±0.02% to ±0.05% (manganin, Grade A); ±0.05% to ±0.1% (constantan, Grade B) | Precise known resistances for bridges and potentiometers |
Choose the substitution box when students need to swap quickly between common resistor values over a wide range; choose the decade box when the exact resistance and its accuracy matter.
What Is the Resistance Substitution Box Used For?
Designing an electronic circuit often means trying several resistor values before settling on one — a transistor bias resistor, an amplifier load, a voltage divider or the R in an RC timing circuit. With a substitution box the student connects two leads to the 4 mm sockets and turns the rotary switch through the preferred values, watching the effect on a meter or oscilloscope, then fits a fixed resistor of the value that gave the wanted result. Because the values span 100 ohms to 470 kilo-ohms in roughly 1:2 steps, one box covers most small-signal circuits in electronics practicals at polytechnics, ITIs and colleges. The power rating is not stated in the listing, so use the box in low-power signal circuits, and switch off before changing values in a powered circuit.
Frequently Asked Questions
What resistance values does the box contain?
Twelve radio-type resistors in standard preferred values covering 100 ohms to 470 kilo-ohms, in steps of roughly 1:2. The listing does not print each value; ask JLab for the full list if your practical sheet needs it.
How are the values selected and connected?
A rotary switch selects one resistor at a time, and the box connects to your circuit through 4 mm sockets.
What is the tolerance and power rating?
Neither is given in the listing. For tolerance-critical or higher-power work, ask JLab for the rating, or use a precision decade resistance box.
How is it different from a decade resistance box?
A substitution box steps through a fixed set of common values over a wide range; a decade box sets any value within its range in decade steps and, in JLab’s manganin and constantan models, has a stated accuracy.
Who manufactures it?
Jain Laboratory Instruments Pvt Ltd (JLab) makes the substitution box at its works in Ambala, Haryana, India.
OEM Manufacturer
JLab is the trading name of Jain Laboratory Instruments Pvt Ltd, an electronic and physics lab instruments manufacturer in India, incorporated in 2017 and based on Hargolal Road, Ambala, Haryana. The substitution box is built at JLab’s own works rather than bought in from a trader, so institutes, dealers and importers order factory-direct, every box is visually inspected before dispatch, and repeat orders are handled by the manufacturer. JLab exports worldwide and ships to buyers in every region — DR Congo in Central Africa, the UK in Western Europe, Canada in North America, Uzbekistan in Central Asia and Armenia in Eastern Europe are some examples. Tender information is on the JLab lab tenders page.
Related Resistance and Capacitance Boxes
- Resistance Box Constantan & Manganin — a precision decade resistance box in Grade A or Grade B.
- Resistance P.O. Box — a plug-type P.O. box with constantan coils and brass blocks.
- Fixed Condenser Boxes — fixed capacitors with 4 mm socket terminals, for RC circuits.
- Four Dial Condenser Box — a dial-type capacitance box for setting C in steps.
More in the Scientific Instrument range and the Indian Instruments section.
Request a Quote
JLab quotes directly as the manufacturer. Use the Add To Cart enquiry button on this page, or send the quantity (minimum 10 units), any capacitance or decade boxes you want with it and your delivery location through the contact page.
Last updated: 8 October 2026
