Rheostats

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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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RJS1K0E.
RJS1K0E. - RHEOSTAT, WIREWOUND, 1KOHM, 50W

1129893

RHEOSTAT, WIREWOUND, 1KOHM, 50W

OHMITE

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1kohm 50W RJS Series Panel Mount Flatted - ± 10% Solder Lug - - 34.93mm - -
RKS25RE.
RKS25RE. - RHEOSTAT, WIREWOUND, 25OHM, 100W

1129928

RHEOSTAT, WIREWOUND, 25OHM, 100W

OHMITE

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25ohm 100W RKS Series Panel Mount Flatted - ± 10% Solder Lug - - 44.45mm - -
RHS1K0E.
RHS1K0E. - RHEOSTAT, WIREWOUND, 1KOHM, 25W

1129863

RHEOSTAT, WIREWOUND, 1KOHM, 25W

OHMITE

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1kohm 25W RHS Series Panel Mount Flatted - ± 10% Solder Lug - - 34.93mm - -
RHS10KE.
RHS10KE. - RHEOSTAT, WIREWOUND, 10KOHM, 25W

1129866

RHEOSTAT, WIREWOUND, 10KOHM, 25W

OHMITE

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10kohm 25W RHS Series Panel Mount Flatted - ± 10% Solder Lug - - 34.93mm - -
RHS100E.
RHS100E. - RHEOSTAT, WIREWOUND, 100OHM, 25W

1129869

RHEOSTAT, WIREWOUND, 100OHM, 25W

OHMITE

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100ohm 25W RHS Series Panel Mount Flatted - ± 10% Solder Lug - - 34.93mm - -
RHS25RE.
RHS25RE. - RHEOSTAT, WIREWOUND, 25OHM, 25W

1129877

RHEOSTAT, WIREWOUND, 25OHM, 25W

OHMITE

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25ohm 25W RHS Series Panel Mount Flatted - ± 10% Solder Lug - - 34.93mm - -
RHS50RE.
RHS50RE. - RHEOSTAT, WIREWOUND, 50OHM, 25W

1129886

RHEOSTAT, WIREWOUND, 50OHM, 25W

OHMITE

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50ohm 25W RHS Series Panel Mount Flatted - ± 10% Solder Lug - - 34.93mm - -
RHS5K0E.
RHS5K0E. - RHEOSTAT, WIREWOUND, 5KOHM, 25W

1129885

RHEOSTAT, WIREWOUND, 5KOHM, 25W

OHMITE

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5kohm 25W RHS Series Panel Mount Flatted - ± 10% Solder Lug - - 34.93mm - -
RJS50RE.
RJS50RE. - RHEOSTAT, WIREWOUND, 50 OHM, 50W

1129911

RHEOSTAT, WIREWOUND, 50 OHM, 50W

OHMITE

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50ohm 50W RJS Series Panel Mount Flatted - ± 10% Solder Lug - - 34.93mm - -
RHS10RE.
RHS10RE. - RHEOSTAT, WIREWOUND, 10 OHM, 25W

1129868

RHEOSTAT, WIREWOUND, 10 OHM, 25W

OHMITE

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10ohm 25W RHS Series Panel Mount Flatted - ± 10% Solder Lug - - 34.93mm - -
RJS500E.
RJS500E. - RHEOSTAT, WIREWOUND, 500OHM, 50W

1129912

RHEOSTAT, WIREWOUND, 500OHM, 50W

OHMITE

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500ohm 50W RJS Series Panel Mount Flatted - ± 10% Solder Lug - - 34.93mm - -
RHS100.
RHS100. - RHEOSTAT, WIREWOUND, 100OHM, 25W

1050187

RHEOSTAT, WIREWOUND, 100OHM, 25W

OHMITE

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100ohm 25W RHS Series Panel Mount Flatted - ± 10% Solder Lug - - 34.93mm - -
RJS225E.
RJS225E. - RHEOSTAT, WIREWOUND, 225OHM, 50W

1129904

RHEOSTAT, WIREWOUND, 225OHM, 50W

OHMITE

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225ohm 50W RJS Series Panel Mount Flatted - ± 10% Solder Lug - - 34.93mm - -
RKS50RE
RKS50RE - Rheostat, 50 ohm, 100 W, RKS Series, Panel Mount, Flatted, High Power

4046576

Rheostat, 50 ohm, 100 W, RKS Series, Panel Mount, Flatted, High Power

OHMITE

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50ohm 100W RKS Series Panel Mount Flatted High Power ± 10% Solder Lug - - 66.68mm - -
RHS1K5E.
RHS1K5E. - RHEOSTAT, WIREWOUND, 1.5KOHM, 25W

1129864

RHEOSTAT, WIREWOUND, 1.5KOHM, 25W

OHMITE

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1.5kohm 25W RHS Series Panel Mount Flatted - ± 10% Solder Lug - - 34.93mm - -
RT025AS4R70KB
RT025AS4R70KB - Rheostat, Wirewound, 4.7 ohm, 25 W, RT, Panel Mount, Rotary

1141315

Rheostat, Wirewound, 4.7 ohm, 25 W, RT, Panel Mount, Rotary

VISHAY

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4.7ohm 25W RT Panel Mount Rotary - ± 10% Solder Lug - - 25mm -55°C 320°C
RKS25RE
RKS25RE - Rheostat, Wirewound, 25 ohm, 100 W, RKS, Panel Mount, Flatted

2145762

Rheostat, Wirewound, 25 ohm, 100 W, RKS, Panel Mount, Flatted

OHMITE

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25ohm 100W RKS Panel Mount Flatted - ± 10% Solder Lug - - 44.45mm - -
RHS10K
RHS10K - Rheostat, Wirewound, 10 kohm, 25 W, RHS, Panel Mount, Flatted

1050333

Rheostat, Wirewound, 10 kohm, 25 W, RHS, Panel Mount, Flatted

OHMITE

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10kohm 25W RHS Panel Mount Flatted - ± 10% Solder - - 34.93mm - -
RJS50RE
RJS50RE - Rheostat, Wirewound, 50 ohm, 50 W, RJS, Panel Mount, Flatted

2145763

Rheostat, Wirewound, 50 ohm, 50 W, RJS, Panel Mount, Flatted

OHMITE

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50ohm 50W RJS Panel Mount Flatted - ± 10% Solder Lug - - 34.93mm - -
RHS1K0
RHS1K0 - Rheostat, Wirewound, 1 kohm, 25 W, RHS, Panel Mount, Flatted

1050254

Rheostat, Wirewound, 1 kohm, 25 W, RHS, Panel Mount, Flatted

OHMITE

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1kohm 25W RHS Panel Mount Flatted - ± 10% Solder - - 34.93mm - -
RT025AS2201KB
RT025AS2201KB - Rheostat, Wirewound, 2.2 kohm, 25 W, RT, Panel Mount, Rotary

1141327

Rheostat, Wirewound, 2.2 kohm, 25 W, RT, Panel Mount, Rotary

VISHAY

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2.2kohm 25W RT Panel Mount Rotary - ± 10% Solder Lug - - 25mm -55°C 320°C
RJS500E
RJS500E - Rheostat, Wirewound, 500 ohm, 50 W, RJS, Panel Mount, Flatted

2145764

Rheostat, Wirewound, 500 ohm, 50 W, RJS, Panel Mount, Flatted

OHMITE

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500ohm 50W RJS Panel Mount Flatted - ± 10% Solder Lug - - 34.93mm - -
RT025AS22R0KB
RT025AS22R0KB - Rheostat, Wirewound, 22 ohm, 25 W, RT, Panel Mount, Rotary

1141318

Rheostat, Wirewound, 22 ohm, 25 W, RT, Panel Mount, Rotary

VISHAY

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22ohm 25W RT Panel Mount Rotary - ± 10% Solder Lug - - 25mm -55°C 320°C
RHS10KE
RHS10KE - Rheostat, Wirewound, 10 kohm, 25 W, RHS, Panel Mount, Flatted

2145774

Rheostat, Wirewound, 10 kohm, 25 W, RHS, Panel Mount, Flatted

OHMITE

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10kohm 25W RHS Panel Mount Flatted - ± 10% Solder Lug - - 34.93mm - -
RT025AS4700KB
RT025AS4700KB - Rheostat, Wirewound, 470 ohm, 25 W, RT, Panel Mount, Rotary

1141323

Rheostat, Wirewound, 470 ohm, 25 W, RT, Panel Mount, Rotary

VISHAY

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470ohm 25W RT Panel Mount Rotary - ± 10% Solder Lug - - 25mm -55°C 320°C