Show In-Stock Only

Rheostats

Adjust and control the current in an electrical circuit with a rheostat. These variable resistors are used to control current without interrupting the flow, making them a useful addition to a circuit.

Whether you need a rheostat switch or you are searching for a specific voltage, such as a 12-volt option, choose from the rheostats at Allied Electronics. We stock high-quality products from leading manufacturers.

To find out more about rheostats, read on.

What are rheostats?

A rheostat is a variable resistor that is used where the current in an electric circuit needs to be adjusted. This adjustment of the current flowing through the circuit is done without interrupting the power supply. They are a common electromechanical variable resistor and when in operation, the ohmic resistance value is adjusted manually by the user.

How do rheostats work?

In terms of their structure, rheostats are very similar in many ways to the potentiometer, which is another type of variable resistor. However, unlike a potentiometer, which has three terminals, a rheostat uses two terminals.

The first of these terminals - or connections - is for the resistive strip and the other terminal is for the wiper, which is the sliding contact. There is no third terminal in most rheostats and even if a third is present only the two are used.

As with potentiometers, the wiper (or slider) is moved across the resistive strip, and this varies the resistance. Rheostats are typically wire-wound resistors made of a coil of wire or thin carbon film. This resistive wire is wound around a ceramic core that offers insulation. The wiper slides over these windings.

The types of rheostats

There are two types of rheostats:

  • Rotary

Rotary rheostats are often referred to as circular rheostats. Here, the resistive element looks like a circle or is set out in a circular form. To follow this shape, the wiper moves around in a rotary style. These are the more common type of rheostat and are often preferred over linear variants because they are more compact.

  • Linear

Linear rheostats are often referred to as cylindrical rheostats due to their shape. Here, the wiper moves in a linear fashion.

What are the differences between a rheostat and a potentiometer?

There are many similarities between rheostats and potentiometers. They are both types of variable resistors and they have similar form and functionality. But the differences must be highlighted to know which of the two are needed for a job.

We have already mentioned that rheostats are two-terminal variable resistors. Unlike potentiometers, which control the voltage, they adjust the current. They are often used to control higher currents because having one less terminal means they are more mechanically robust, especially when attached to a printed circuit board (PCB).

Another main difference between the two is that a rheostat only offers a linear taper. Potentiometers can have either a linear or logarithmic taper.

Where are rheostats used?

While most applications require a rotary rheostat, linear rheostats are often used in laboratories. Rheostats - mostly rotary rheostats - are used where a high voltage is needed. For instance, they are often found in circuits where light intensity needs to be altered. Increasing the rheostat's resistance will reduce the electric current flowing to the bulb, decreasing the light intensity.

They are also used to raise or reduce speed in an electric motor and power heaters and ovens. This makes them useful in culinary and kitchen settings.

Why choose Allied Electronics for your rheostats?

At Allied Electronics, we stock a range of rheostats that are designed to help you successfully control the current flowing in a circuit. We are a leading authorized distributor in North America and stock rheostats by leading names including Ohmite, TE Connectivity, and Vishay Dale.

If have any questions, our team is on hand to help. Get in touch and we can guide you through the products. You can also find advice in our expert content hub.

Compare Product
You may only compare up to 5 items.
Ohmite RHS100E
Mfr. Part #: RHS100E
Allied Stk #: 70022460
In Stock: 296
+1 $84.52 /ea
+10 $82.82 /ea
+100 $80.29 /ea
RoHS Compliant
-
+
ADD TO CART UPDATE CART Add Update Cart button
Error updating cart

RoHS Compliant RoHS Compliant

Aerospace Non Compliant Aerospace Non Compliant

You may only compare up to 5 items.
Ohmite RHS25RE
Mfr. Part #: RHS25RE
Allied Stk #: 70022471
In Stock: 323
+1 $75.05 /ea
+10 $73.55 /ea
+100 $71.30 /ea
RoHS Compliant
-
+
ADD TO CART UPDATE CART Add Update Cart button
Error updating cart

RoHS Compliant RoHS Compliant

Aerospace Non Compliant Aerospace Non Compliant

You may only compare up to 5 items.
Ohmite RKS10RE
Mfr. Part #: RKS10RE
Allied Stk #: 70022510
In Stock: 0
On Order: 7
+1 $175.22 /ea
+10 $166.48 /ea
RoHS Compliant
-
+
ADD TO CART UPDATE CART Add Update Cart button
Error updating cart

RoHS Compliant RoHS Compliant

Aerospace Non Compliant Aerospace Non Compliant

You may only compare up to 5 items.
Ohmite RHL5K0E
Mfr. Part #: RHL5K0E
Allied Stk #: 70024760
In Stock: 8
On Order: 54
+1 $78.60 /ea
+10 $77.03 /ea
+100 $74.67 /ea
RoHS Compliant
-
+
ADD TO CART UPDATE CART Add Update Cart button
Error updating cart

RoHS Compliant RoHS Compliant

Aerospace Non Compliant Aerospace Non Compliant

You may only compare up to 5 items.
Ohmite RJS10KE
Mfr. Part #: RJS10KE
Allied Stk #: 70022485
In Stock: 95
+1 $123.33 /ea
+10 $120.87 /ea
+100 $117.17 /ea
RoHS Compliant
-
+
ADD TO CART UPDATE CART Add Update Cart button
Error updating cart

RoHS Compliant RoHS Compliant

Aerospace Non Compliant Aerospace Non Compliant

You may only compare up to 5 items.
Ohmite RJS1K0E
Mfr. Part #: RJS1K0E
Allied Stk #: 70022490
In Stock: 65
On Order: 349
+1 $109.80 /ea
+10 $107.61 /ea
+100 $104.31 /ea
RoHS Compliant
-
+
ADD TO CART UPDATE CART Add Update Cart button
Error updating cart

RoHS Compliant RoHS Compliant

Aerospace Non Compliant Aerospace Non Compliant

You may only compare up to 5 items.
Ohmite RKS500E
Mfr. Part #: RKS500E
Allied Stk #: 70022517
In Stock: 0
+1 $206.48 /ea
+10 $196.16 /ea
RoHS Compliant
-
+
ADD TO CART UPDATE CART Add Update Cart button
Error updating cart

RoHS Compliant RoHS Compliant

Aerospace Non Compliant Aerospace Non Compliant

You may only compare up to 5 items.
Ohmite RHS175E
Mfr. Part #: RHS175E
Allied Stk #: 70022465
In Stock: 248
+1 $84.28 /ea
+10 $82.60 /ea
+100 $80.06 /ea
RoHS Compliant
-
+
ADD TO CART UPDATE CART Add Update Cart button
Error updating cart

RoHS Compliant RoHS Compliant

Aerospace Non Compliant Aerospace Non Compliant

You may only compare up to 5 items.
Ohmite RHS250E
Mfr. Part #: RHS250E
Allied Stk #: 70022469
In Stock: 74
+1 $89.39 /ea
+10 $87.61 /ea
+100 $84.93 /ea
RoHS Compliant
-
+
ADD TO CART UPDATE CART Add Update Cart button
Error updating cart

RoHS Compliant RoHS Compliant

Aerospace Non Compliant Aerospace Non Compliant

You may only compare up to 5 items.
Ohmite RNS1R0E
Mfr. Part #: RNS1R0E
Allied Stk #: 70022537
In Stock: 77
On Order: 50
+1 $345.32 /ea
+10 $328.07 /ea
RoHS Compliant
-
+
ADD TO CART UPDATE CART Add Update Cart button
Error updating cart

RoHS Compliant RoHS Compliant

Aerospace Non Compliant Aerospace Non Compliant

You may only compare up to 5 items.
Ohmite RHS10KE
Mfr. Part #: RHS10KE
Allied Stk #: 70022461
In Stock: 0
+1 $90.71 /ea
+10 $88.90 /ea
+100 $86.18 /ea
RoHS Compliant
-
+
ADD TO CART UPDATE CART Add Update Cart button
Error updating cart

RoHS Compliant RoHS Compliant

Aerospace Non Compliant Aerospace Non Compliant

You may only compare up to 5 items.
Ohmite RJS50RE
Mfr. Part #: RJS50RE
Allied Stk #: 70022502
In Stock: 134
+1 $107.72 /ea
+10 $105.55 /ea
+100 $102.33 /ea
RoHS Compliant
-
+
ADD TO CART UPDATE CART Add Update Cart button
Error updating cart

RoHS Compliant RoHS Compliant

Aerospace Non Compliant Aerospace Non Compliant

You may only compare up to 5 items.
Ohmite RHS15RE
Mfr. Part #: RHS15RE
Allied Stk #: 70022464
In Stock: 57
+1 $85.74 /ea
+10 $84.02 /ea
+100 $81.45 /ea
RoHS Compliant
-
+
ADD TO CART UPDATE CART Add Update Cart button
Error updating cart

RoHS Compliant RoHS Compliant

Aerospace Non Compliant Aerospace Non Compliant

You may only compare up to 5 items.
Ohmite RHS5K0E
Mfr. Part #: RHS5K0E
Allied Stk #: 70022480
In Stock: 215
+1 $76.95 /ea
+10 $75.40 /ea
+100 $73.11 /ea
RoHS Compliant
-
+
ADD TO CART UPDATE CART Add Update Cart button
Error updating cart

RoHS Compliant RoHS Compliant

Aerospace Non Compliant Aerospace Non Compliant

You may only compare up to 5 items.
Ohmite RHS500E
Mfr. Part #: RHS500E
Allied Stk #: 70022478
In Stock: 0
+1 $80.22 /ea
+10 $78.61 /ea
+100 $76.20 /ea
RoHS Compliant
-
+
ADD TO CART UPDATE CART Add Update Cart button
Error updating cart

RoHS Compliant RoHS Compliant

Aerospace Non Compliant Aerospace Non Compliant

You may only compare up to 5 items.
Ohmite RHS75RE
Mfr. Part #: RHS75RE
Allied Stk #: 70022483
In Stock: 159
+1 $82.52 /ea
+10 $80.89 /ea
+100 $78.41 /ea
RoHS Compliant
-
+
ADD TO CART UPDATE CART Add Update Cart button
Error updating cart

RoHS Compliant RoHS Compliant

Aerospace Non Compliant Aerospace Non Compliant

You may only compare up to 5 items.
Ohmite RES100E
Mfr. Part #: RES100E
Allied Stk #: 70022440
In Stock: 79
+1 $64.45 /ea
+10 $63.16 /ea
+100 $61.22 /ea
RoHS Compliant
-
+
ADD TO CART UPDATE CART Add Update Cart button
Error updating cart

RoHS Compliant RoHS Compliant

Aerospace Non Compliant Aerospace Non Compliant

You may only compare up to 5 items.
Ohmite RHS1K0E
Mfr. Part #: RHS1K0E
Allied Stk #: 70022466
In Stock: 341
+1 $76.73 /ea
+10 $68.86 /ea
+100 $66.77 /ea
RoHS Compliant
-
+
ADD TO CART UPDATE CART Add Update Cart button
Error updating cart

RoHS Compliant RoHS Compliant

Aerospace Non Compliant Aerospace Non Compliant

You may only compare up to 5 items.
Ohmite RES1K0E
Mfr. Part #: RES1K0E
Allied Stk #: 70022445
In Stock: 0
On Order: 72
+1 $69.14 /ea
+10 $67.76 /ea
+100 $65.68 /ea
RoHS Compliant
-
+
ADD TO CART UPDATE CART Add Update Cart button
Error updating cart

RoHS Compliant RoHS Compliant

Aerospace Non Compliant Aerospace Non Compliant

You may only compare up to 5 items.
Ohmite RHS1K5E
Mfr. Part #: RHS1K5E
Allied Stk #: 70022467
In Stock: 34
+1 $90.73 /ea
+10 $88.91 /ea
+100 $86.20 /ea
RoHS Compliant
-
+
ADD TO CART UPDATE CART Add Update Cart button
Error updating cart

RoHS Compliant RoHS Compliant

Aerospace Non Compliant Aerospace Non Compliant

Availability
Price
Resistance
Power Rating
Current Rating
Mounting Type
Core
Series
In Stock: 296
+1 $84.52 /ea
+10 $82.82 /ea
+100 $80.29 /ea
100 Ohms
25 W
0.5 A
Panel Mount
Open
R Series
In Stock: 323
+1 $75.05 /ea
+10 $73.55 /ea
+100 $71.30 /ea
25 Ohms
25 W
1 A
Panel Mount
Open
R Series
In Stock: 0
On Order: 7
+1 $175.22 /ea
+10 $166.48 /ea
10 Ohms
100 W
3.16 A
Panel Mount
Open
R Series
In Stock: 8
On Order: 54
+1 $78.60 /ea
+10 $77.03 /ea
+100 $74.67 /ea
5 kOhms
25 W
Panel Mount
R Series
In Stock: 95
+1 $123.33 /ea
+10 $120.87 /ea
+100 $117.17 /ea
10 kOhms
50 W
0.07 A
Panel Mount
Open
R Series
In Stock: 65
On Order: 349
+1 $109.80 /ea
+10 $107.61 /ea
+100 $104.31 /ea
1 kOhms
50 W
0.224 A
Panel Mount
Open
R Series
In Stock: 0
+1 $206.48 /ea
+10 $196.16 /ea
500 Ohms
100 W
0.447 A
Panel Mount
Open
R Series
In Stock: 248
+1 $84.28 /ea
+10 $82.60 /ea
+100 $80.06 /ea
175 Ohms
25 W
0.375 A
Panel Mount
Open
R Series
In Stock: 74
+1 $89.39 /ea
+10 $87.61 /ea
+100 $84.93 /ea
250 Ohms
25 W
0.316 A
Panel Mount
Open
R Series
In Stock: 77
On Order: 50
+1 $345.32 /ea
+10 $328.07 /ea
1 Ohms
300 W
17.32 A
Panel Mount
Open
R Series
In Stock: 0
+1 $90.71 /ea
+10 $88.90 /ea
+100 $86.18 /ea
10 kOhms
25 W
0.05 A
Panel Mount
Open
R Series
In Stock: 134
+1 $107.72 /ea
+10 $105.55 /ea
+100 $102.33 /ea
50 Ohms
50 W
1 A
Panel Mount
Open
R Series
In Stock: 57
+1 $85.74 /ea
+10 $84.02 /ea
+100 $81.45 /ea
15 Ohms
25 W
1.29 A
Panel Mount
Open
R Series
In Stock: 215
+1 $76.95 /ea
+10 $75.40 /ea
+100 $73.11 /ea
5 kOhms
25 W
0.07 A
Panel Mount
Open
R Series
In Stock: 0
+1 $80.22 /ea
+10 $78.61 /ea
+100 $76.20 /ea
500 Ohms
25 W
0.222 A
Panel Mount
Open
R Series
In Stock: 159
+1 $82.52 /ea
+10 $80.89 /ea
+100 $78.41 /ea
75 Ohms
25 W
0.575 A
Panel Mount
Open
R Series
In Stock: 79
+1 $64.45 /ea
+10 $63.16 /ea
+100 $61.22 /ea
100 Ohms
12.5 W
0.36 A
Panel Mount
Open
R Series
In Stock: 341
+1 $76.73 /ea
+10 $68.86 /ea
+100 $66.77 /ea
1 kOhms
25 W
0.155 A
Panel Mount
Open
R Series
In Stock: 0
On Order: 72
+1 $69.14 /ea
+10 $67.76 /ea
+100 $65.68 /ea
1 kOhms
12.5 W
0.1 A
Panel Mount
Open
R Series
In Stock: 34
+1 $90.73 /ea
+10 $88.91 /ea
+100 $86.20 /ea
1.5 kOhms
25 W
0.129 A
Panel Mount
Open
R Series
You have 0 products to compare selected.
Clear
Hide
COMPARE