Rheostats:

42 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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2145770

RoHS

Each
1+
HK$1,114.310
2+
HK$1,073.320
3+
HK$1,032.320
5+
HK$991.320
10+
HK$950.320
More Pricing...
Min: 1 / Mult: 1
50ohm
25W
H Series
Panel Mount
Flatted
-
± 10%
Solder Lug
34.93mm
-
-
2145771

RoHS

Each
1+
HK$932.480
2+
HK$906.220
3+
HK$879.960
5+
HK$853.700
10+
HK$827.430
More Pricing...
Min: 1 / Mult: 1
25ohm
25W
H Series
Panel Mount
Flatted
-
± 10%
Solder Lug
34.93mm
-
-
2145764

RoHS

Each
1+
HK$966.590
2+
HK$939.960
3+
HK$913.330
5+
HK$886.700
10+
HK$860.060
More Pricing...
Min: 1 / Mult: 1
500ohm
50W
J Series
Panel Mount
Flatted
-
± 10%
Solder Lug
34.93mm
-
-
1129869

RoHS

Each
1+
HK$762.570
2+
HK$739.390
3+
HK$716.210
5+
HK$693.030
10+
HK$669.850
More Pricing...
Min: 1 / Mult: 1
100ohm
25W
RHS Series
Panel Mount
Flatted
-
± 10%
Solder Lug
34.93mm
-
-
2145774

RoHS

Each
1+
HK$899.520
2+
HK$878.930
3+
HK$858.340
5+
HK$837.750
10+
HK$817.160
More Pricing...
Min: 1 / Mult: 1
10kohm
25W
H Series
Panel Mount
Flatted
-
± 10%
Solder Lug
34.93mm
-
-
1129886

RoHS

Each
1+
HK$1,114.310
2+
HK$1,073.320
3+
HK$1,032.320
5+
HK$991.320
10+
HK$950.320
More Pricing...
Min: 1 / Mult: 1
50ohm
25W
RHS Series
Panel Mount
Flatted
-
± 10%
Solder Lug
34.93mm
-
-
1129885

RoHS

Each
1+
HK$1,051.180
2+
HK$1,017.810
3+
HK$984.440
5+
HK$951.070
10+
HK$917.690
More Pricing...
Min: 1 / Mult: 1
5kohm
25W
RHS Series
Panel Mount
Flatted
-
± 10%
Solder Lug
34.93mm
-
-
1141310

RoHS

Each
1+
HK$4,203.440
5+
HK$3,678.010
10+
HK$3,047.490
Min: 1 / Mult: 1
220ohm
12W
RT Series
Panel Mount
Rotary
-
± 10%
Solder Lug
17mm
-55°C
320°C
2145772

RoHS

Each
1+
HK$844.030
2+
HK$824.270
3+
HK$804.500
5+
HK$784.730
10+
HK$764.960
More Pricing...
Min: 1 / Mult: 1
1kohm
25W
H Series
Panel Mount
Flatted
-
± 10%
Solder Lug
34.93mm
-
-
1141319

RoHS

Each
1+
HK$2,253.850
5+
HK$1,982.590
10+
HK$1,711.330
Min: 1 / Mult: 1
47ohm
25W
RT Series
Panel Mount
Rotary
-
± 10%
Solder Lug
25mm
-55°C
320°C
1050187
Each
1+
HK$762.570
2+
HK$739.390
3+
HK$716.210
5+
HK$693.030
10+
HK$669.850
More Pricing...
Min: 1 / Mult: 1
100ohm
25W
RHS Series
Panel Mount
Flatted
-
± 10%
Solder Lug
34.93mm
-
-
1129904

RoHS

Each
1+
HK$1,018.960
2+
HK$996.070
3+
HK$973.180
5+
HK$950.290
10+
HK$927.390
More Pricing...
Min: 1 / Mult: 1
225ohm
50W
RJS Series
Panel Mount
Flatted
-
± 10%
Solder Lug
34.93mm
-
-
1760713

RoHS

Each
Pricing is unavailable. Please contact customer services.
-
-
-
-
-
-
-
-
-
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1141339

RoHS

Each
1+
HK$3,756.770
Min: 1 / Mult: 1
100ohm
100W
RT Series
Panel Mount
Rotary
-
± 10%
Solder Lug
50mm
-55°C
320°C
4046506

RoHS

Each
1+
HK$854.230
2+
HK$819.590
3+
HK$784.940
5+
HK$750.290
10+
HK$715.640
More Pricing...
Min: 1 / Mult: 1
10kohm
25W
H Series
Panel Mount
Flatted
High Power
± 10%
Solder Lug
53.98mm
-
-
4046529

RoHS

Each
1+
HK$1,206.210
5+
HK$1,168.440
10+
HK$1,130.670
Min: 1 / Mult: 1
10kohm
50W
J Series
Panel Mount
Flatted
High Power
± 10%
Solder Lug
57.16mm
-
-
4046558

RoHS

Each
1+
HK$1,768.870
5+
HK$1,628.430
10+
HK$1,487.990
Min: 1 / Mult: 1
100ohm
100W
K Series
Panel Mount
Flatted
High Power
± 10%
Solder Lug
66.68mm
-
-
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