Rheostats:

36 Products Found
We offer a wide range of rheostats, with power ratings from 25W to 1kW. Track resistances range from 0.5Ohm to 50kOhm.Like potentiometers, rheostats have a uniform resistance track and a sliding contact – however they are connected into an external circuit differently, and they have a different function. They have two terminals rather than three, where one terminal is connected to the resistance track and the other to the sliding contact. As two-terminal devices they are wired in series with a load such as a lamp. Moving the sliding contact alters the series resistance in circuit, controlling the level of current flowing through the lamp and therefore its brightness.

Types of rheostats

Rotary Rheostats are usually used in power applications; as the name suggests, their resistance tracks are rotary.Linear Rheostats have a linear movement for changing the resistance path length and therefore the resistance. This type is usually found in laboratory applications.Preset Rheostats are usually found on printed circuit boards, and used for calibration purposes.

Rheostat applications

Rheostats are used in dimmer circuits, heaters and ovens, and speed control circuits for motors. They are also used for easily varying currents in teaching applications.
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ComparePrice ForQuantity
2145775

RoHS

Each
1+
RM609.470
2+
RM447.940
3+
RM438.770
5+
RM429.600
10+
RM420.430
More Pricing...
Min: 1 / Mult: 1
100ohm
25W
H Series
Panel Mount
Flatted
-
± 10%
Solder Lug
-
-
34.93mm
-
-
1141327

RoHS

Each
1+
RM1,591.450
5+
RM1,388.670
10+
RM1,185.890
Min: 1 / Mult: 1
2.2kohm
25W
RT Series
Panel Mount
Rotary
-
± 10%
Solder Lug
-
-
25mm
-55°C
320°C
1141318

RoHS

Each
1+
RM1,280.810
5+
RM1,176.330
10+
RM1,071.850
Min: 1 / Mult: 1
22ohm
25W
RT Series
Panel Mount
Rotary
-
± 10%
Solder Lug
-
-
25mm
-55°C
320°C
1141316

RoHS

Each
1+
RM1,001.410
5+
RM981.390
10+
RM961.360
Min: 1 / Mult: 1
10ohm
25W
RT Series
Panel Mount
Rotary
-
± 10%
Solder Lug
-
-
25mm
-55°C
320°C
1141336

RoHS

Each
1+
RM4,663.770
5+
RM4,282.020
10+
RM3,900.270
Min: 1 / Mult: 1
10ohm
55W
RT Series
Panel Mount
Rotary
-
± 10%
Solder Lug
-
-
36mm
-55°C
320°C
1141312

RoHS

Each
1+
RM2,633.460
5+
RM2,304.270
10+
RM1,909.250
Min: 1 / Mult: 1
1kohm
12W
RT12 Series
Panel Mount
Screwdriver Slot
-
± 10%
Solder Lug
-
-
17mm
-55°C
320°C
4046576

RoHS

Each
1+
RM906.470
5+
RM877.080
10+
RM847.680
Min: 1 / Mult: 1
50ohm
100W
K Series
Panel Mount
Flatted
High Power
± 10%
Solder Lug
-
-
66.68mm
-
-
1141322

RoHS

Each
1+
RM1,744.900
5+
RM1,526.780
10+
RM1,265.040
Min: 1 / Mult: 1
220ohm
25W
RT Series
Panel Mount
Rotary
-
± 10%
Solder Lug
-
-
25mm
-55°C
320°C
1141320

RoHS

Each
1+
RM1,165.680
5+
RM1,118.770
10+
RM1,071.850
Min: 1 / Mult: 1
100ohm
25W
RT Series
Panel Mount
Rotary
-
± 10%
Solder Lug
-
-
25mm
-55°C
320°C
1141333

RoHS

Each
1+
RM4,666.900
5+
RM4,083.530
10+
RM3,958.110
Min: 1 / Mult: 1
1kohm
55W
RT Series
Panel Mount
Rotary
-
± 10%
Solder Lug
-
-
36mm
-55°C
320°C
1141315

RoHS

Each
1+
RM1,972.750
5+
RM1,726.160
10+
RM1,430.240
Min: 1 / Mult: 1
4.7ohm
25W
RT Series
Panel Mount
Rotary
-
± 10%
Solder Lug
-
-
25mm
-55°C
320°C
2145763

RoHS

Each
1+
RM723.150
2+
RM711.870
3+
RM700.590
5+
RM689.310
10+
RM678.020
More Pricing...
Min: 1 / Mult: 1
50ohm
50W
J Series
Panel Mount
Flatted
-
± 10%
Solder Lug
-
-
34.93mm
-
-
1050333
Each
1+
RM925.560
2+
RM809.870
3+
RM671.030
5+
RM601.610
10+
RM589.580
More Pricing...
Min: 1 / Mult: 1
10ohm
25W
H Series
Panel Mount
Flatted
-
± 10%
Solder
-
-
34.93mm
-
-
1129893

RoHS

Each
1+
RM764.960
2+
RM747.770
3+
RM730.570
5+
RM713.370
10+
RM696.170
More Pricing...
Min: 1 / Mult: 1
-
-
-
-
-
-
-
-
-
-
-
-
-
1129866

RoHS

Each
1+
RM654.860
2+
RM628.400
3+
RM601.930
5+
RM575.470
10+
RM549.000
More Pricing...
Min: 1 / Mult: 1
10ohm
25W
RHS Series
Panel Mount
Flatted
-
± 10%
Solder Lug
-
-
34.93mm
-
-
1129863

RoHS

Each
1+
RM549.530
2+
RM540.090
3+
RM530.640
5+
RM521.200
10+
RM511.750
More Pricing...
Min: 1 / Mult: 1
1kohm
25W
RHS Series
Panel Mount
Flatted
-
± 10%
Solder Lug
-
-
34.93mm
-
-
1050254
Each
1+
RM577.150
2+
RM553.720
3+
RM530.280
5+
RM506.850
10+
RM483.410
More Pricing...
Min: 1 / Mult: 1
1kohm
25W
H Series
Panel Mount
Flatted
-
± 10%
Solder
-
-
34.93mm
-
-
2145770

RoHS

Each
1+
RM690.150
2+
RM668.780
3+
RM647.410
5+
RM626.040
10+
RM604.670
More Pricing...
Min: 1 / Mult: 1
50ohm
25W
H Series
Panel Mount
Flatted
-
± 10%
Solder Lug
-
-
34.93mm
-
-
2145771

RoHS

Each
1+
RM607.430
2+
RM592.000
3+
RM576.560
5+
RM561.130
10+
RM545.690
More Pricing...
Min: 1 / Mult: 1
25ohm
25W
H Series
Panel Mount
Flatted
-
± 10%
Solder Lug
-
-
34.93mm
-
-
2145764

RoHS

Each
1+
RM746.750
2+
RM718.790
3+
RM690.830
5+
RM662.870
10+
RM634.900
More Pricing...
Min: 1 / Mult: 1
500ohm
50W
J Series
Panel Mount
Flatted
-
± 10%
Solder Lug
-
-
34.93mm
-
-
1129869

RoHS

Each
1+
RM553.590
2+
RM541.370
3+
RM529.140
5+
RM516.920
10+
RM504.690
More Pricing...
Min: 1 / Mult: 1
100ohm
25W
RHS Series
Panel Mount
Flatted
-
± 10%
Solder Lug
-
-
34.93mm
-
-
2145774

RoHS

Each
1+
RM721.850
2+
RM695.390
3+
RM668.930
5+
RM642.470
10+
RM616.000
More Pricing...
Min: 1 / Mult: 1
10ohm
25W
H Series
Panel Mount
Flatted
-
± 10%
Solder Lug
-
-
34.93mm
-
-
157454

RoHS

Each
1+
RM5,285.380
5+
RM3,857.100
10+
RM3,252.410
Min: 1 / Mult: 1
5.6ohm
811W
BFA Series
Panel Mount
Top
High Power
± 10%
Screw
405mm
94mm
153mm
-
-
1129886

RoHS

Each
1+
RM630.460
2+
RM609.090
3+
RM587.720
5+
RM566.350
10+
RM544.980
More Pricing...
Min: 1 / Mult: 1
50ohm
25W
RHS Series
Panel Mount
Flatted
-
± 10%
Solder Lug
-
-
34.93mm
-
-
1129885

RoHS

Each
1+
RM617.840
2+
RM598.230
3+
RM578.610
5+
RM559.000
10+
RM539.380
More Pricing...
Min: 1 / Mult: 1
5kohm
25W
RHS Series
Panel Mount
Flatted
-
± 10%
Solder Lug
-
-
34.93mm
-
-
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