Rheostats:

41 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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1141327

RoHS

Each
1+
HK$3,008.520
5+
HK$2,625.190
10+
HK$2,241.850
Min: 1 / Mult: 1
2.2kohm
25W
RT Series
Panel Mount
Rotary
-
± 10%
Solder Lug
25mm
-55°C
320°C
1141318

RoHS

Each
1+
HK$2,179.130
5+
HK$2,001.370
10+
HK$1,823.610
Min: 1 / Mult: 1
22ohm
25W
RT Series
Panel Mount
Rotary
-
± 10%
Solder Lug
25mm
-55°C
320°C
1141316

RoHS

Each
1+
HK$1,703.760
5+
HK$1,669.690
10+
HK$1,635.610
Min: 1 / Mult: 1
10ohm
25W
RT Series
Panel Mount
Rotary
-
± 10%
Solder Lug
25mm
-55°C
320°C
1141336

RoHS

Each
1+
HK$9,068.400
5+
HK$7,934.850
10+
HK$6,635.850
Min: 1 / Mult: 1
10ohm
55W
RT Series
Panel Mount
Rotary
-
± 10%
Solder Lug
36mm
-55°C
320°C
1141312

RoHS

Each
1+
HK$4,172.790
5+
HK$3,651.190
10+
HK$3,025.270
Min: 1 / Mult: 1
1kohm
12W
RT12 Series
Panel Mount
Screwdriver Slot
-
± 10%
Solder Lug
17mm
-55°C
320°C
2145775

RoHS

Each
1+
HK$941.850
2+
HK$690.800
3+
HK$675.200
5+
HK$659.610
10+
HK$644.010
More Pricing...
Min: 1 / Mult: 1
100ohm
25W
H Series
Panel Mount
Flatted
-
± 10%
Solder Lug
34.93mm
-
-
1141323

RoHS

Each
1+
HK$3,092.210
5+
HK$2,705.690
10+
HK$2,241.850
Min: 1 / Mult: 1
470ohm
25W
RT Series
Panel Mount
Rotary
-
± 10%
Solder Lug
25mm
-55°C
320°C
1141309

RoHS

Each
1+
HK$4,172.790
5+
HK$3,651.190
10+
HK$3,025.270
Min: 1 / Mult: 1
150ohm
12W
RT Series
Panel Mount
Rotary
-
± 10%
Solder Lug
17mm
-55°C
320°C
1141324

RoHS

Each
1+
HK$2,678.900
5+
HK$2,460.380
10+
HK$2,241.850
Min: 1 / Mult: 1
1kohm
25W
RT Series
Panel Mount
Rotary
-
± 10%
Solder Lug
25mm
-55°C
320°C
1141329

RoHS

Each
1+
HK$7,284.490
5+
HK$6,863.710
10+
HK$6,442.920
Min: 1 / Mult: 1
10ohm
55W
RT Series
Panel Mount
Rotary
-
± 10%
Solder Lug
36mm
-55°C
320°C
1141308

RoHS

Each
1+
HK$4,438.690
5+
HK$3,883.860
10+
HK$3,218.050
Min: 1 / Mult: 1
100ohm
12W
RT Series
Panel Mount
Rotary
-
± 10%
Solder Lug
17mm
-55°C
320°C
1141315

RoHS

Each
1+
HK$3,356.380
5+
HK$2,936.830
10+
HK$2,433.370
Min: 1 / Mult: 1
4.7ohm
25W
RT Series
Panel Mount
Rotary
-
± 10%
Solder Lug
25mm
-55°C
320°C
1129893

RoHS

Each
1+
HK$1,196.260
2+
HK$1,167.000
3+
HK$1,137.740
5+
HK$1,108.480
10+
HK$1,079.210
More Pricing...
Min: 1 / Mult: 1
-
-
-
-
-
-
-
-
-
-
-
1050333
Each
1+
HK$1,574.710
2+
HK$1,377.870
3+
HK$1,141.670
5+
HK$1,023.560
10+
HK$1,003.090
More Pricing...
Min: 1 / Mult: 1
10ohm
25W
H Series
Panel Mount
Flatted
-
± 10%
Solder
34.93mm
-
-
1129866

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
10ohm
25W
RHS Series
Panel Mount
Flatted
-
± 10%
Solder Lug
34.93mm
-
-
1129863

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
RHS 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
-
-
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
-
-
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
-
-
1141322

RoHS

Each
1+
HK$2,674.520
5+
HK$2,340.210
10+
HK$1,939.020
Min: 1 / Mult: 1
220ohm
25W
RT Series
Panel Mount
Rotary
-
± 10%
Solder Lug
25mm
-55°C
320°C
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