Rheostats

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Rheostats Specification

Core Components
Resistive Wire, Sliding Contact

Automation Grade
Manual

Frequency
50 Hz / 60 Hz

Measurement Range
0 to Max Rated Value (Model Specific)

Model No
As Per Requirement

Accuracy
5%

Temperature Range
0C to 40C

Feature
High Thermal Stability, Smooth Adjustment

Voltage
Up to 250V (AC/DC)

Type
Wire Wound Rheostat

Usage
Laboratory Testing, Voltage and Current Control

Dimension (L*W*H)
Model Dependent (e.g., 220 x 100 x 110 mm)

Weight
Varies with model (Approx. 1 kg to 8 kg)

Resistance Range
10, 50, 100, 200 (Options as per Model)

Insulation Resistance
>100 M at 500V DC

Mounting Type
Bench / Table Top

Current Carrying Capacity
Up to 5A (Model Dependent)

Contact Type
Sliding Pointer

Operating Position
Horizontal or Vertical (Depends on model)

Surface Finish
Powder Coated / Painted

About Rheostats

Power Rheostats are made with a variety of resistance & current carrying capacity so as to satisfy every need. They are wound with heavily oxidized eureka resistance wire upon a porcelain tube dia 44 mm aprox. The tube is carrying upon Bakelite rider and the heavy duty sliding contact is of the phosphor bronze with brass rod. 4 mm socket terminals are fitted, allowing for rheostat or potentiometer connection. Total resistance and maximum current capacity is marked on the slider. Total Permanent current loading should not exceed 75% of the marked values. The actual resistance of Wire Wound Rheostats shall be +20% -5% of the rated resistance as per our resistance chart. (as

per ISI specification no. IS : 9051 S. No. 10.3), we are recognized as one of the major Electronic Rheostats Manufacturers and Exporters from India.

Reliable Voltage and Current Control

Engineered for consistent and accurate performance, this wire wound rheostat enables fine-tuned voltage and current regulation in laboratory setups. Its smooth adjustment pointer and robust resistive wire ensure dependable control across a range of scientific or educational experiments.

Versatile Mounting and Model Options

Choose from bench or table-top mounting with models that cater to varying resistance, current, and dimensional requirements. The rheostats adaptable orientationhorizontal or verticalaccommodates different workspace configurations, enhancing user convenience and equipment compatibility.

Durability with Enhanced Safety

With a powder-coated or painted surface finish and an insulation resistance greater than 100 M at 500V DC, this rheostat is built to last. Its high thermal stability grants safe and reliable performance, even during extended laboratory testing or voltage regulation tasks.

FAQs of Rheostats:

Q: How does the sliding pointer contact function in this rheostat?

A: The sliding pointer contact allows users to precisely adjust the resistance by moving it along the resistive wire. This design ensures smooth, accurate changes in resistance, making it easy to control voltage and current levels as required for different laboratory applications.

Q: What are the options for resistance and current capacity in these rheostats?

A: Depending on the model, resistance options include 10, 50, 100, and 200, with current carrying capacities of up to 5A. The suitable model can be selected based on specific experimental or operational requirements.

Q: Where can these rheostats be mounted and in which positions?

A: These rheostats support bench or table-top mounting and can be operated in either a horizontal or vertical position, depending on the model. This flexibility ensures compatibility with various workspace arrangements.

Q: When is it beneficial to use a wire wound rheostat in laboratory testing?

A: A wire wound rheostat is particularly beneficial when variable resistance, voltage, or current control is requiredsuch as in physics experiments, electronics testing, or calibration procedures. Its stable and accurate adjustment helps in achieving precise control during experiments.

Q: What safety features does this rheostat offer?

A: It is equipped with high insulation resistance (above 100 M at 500V DC) and superior thermal stability, which enhances safety by preventing electrical leakage and heat buildup during extended usage.

Q: How is the rheostats measurement range determined?

A: The measurement range spans from 0 to the maximum rated resistance value specified by the model chosen, enabling users to select an option best suited for their voltage and current regulation needs.

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