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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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Manufacturer Part No	Newark Part No.	Description / Manufacturer	Price for:	Price	Quantity	Resistance	Track Resistance	Power Rating	Product Range	Voltage Rating	Resistor Mounting	Adjustment Type	Temperature Coefficient	Rheostat Type	Resistance Tolerance	Resistor Technology	Resistor Terminals	Product Length	Product Height	Operating Temperature Min	Operating Temperature Max
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RT012AS2200KB	24M7062 Data Sheet + RoHS	RHEOSTAT, 12W 220R VISHAY You previously purchased this product. View in Order History	Each	1+ $411.23 5+ $404.36 10+ $397.50	Restricted Item Minimum order of 1 items Multiples of 1 only Please enter a valid quantity Add	-	220ohm	12W	RT	-	Panel Mount	Rotary	-	-	± 10%	-	Solder Lug	-	17mm	-55°C	320°C
RT012AS1001KB	24M7060 Data Sheet + RoHS	RHEOSTAT, 12W 1K0 VISHAY You previously purchased this product. View in Order History	Each	1+ $397.55	Restricted Item Minimum order of 1 items Multiples of 1 only Please enter a valid quantity Add	-	1kohm	12W	RT	-	Panel Mount	Screwdriver Slot	-	-	± 10%	-	Solder Lug	-	17mm	-55°C	320°C
RT025AS10R0KB	24M7065 Data Sheet Data Sheet + RoHS	RHEOSTAT, 25W 10R VISHAY You previously purchased this product. View in Order History	Each	1+ $255.40 5+ $252.47 10+ $249.53 25+ $246.59	Restricted Item Minimum order of 1 items Multiples of 1 only Please enter a valid quantity Add	-	10ohm	25W	RT	-	Panel Mount	Rotary	-	-	± 10%	-	Solder Lug	-	25mm	-55°C	320°C
RT025AS4R70KB	24M7073 Data Sheet + RoHS	RHEOSTAT, 25W 4R7 VISHAY You previously purchased this product. View in Order History	Each	1+ $292.99	Restricted Item Minimum order of 1 items Multiples of 1 only Please enter a valid quantity Add	-	4.7ohm	25W	RT	-	Panel Mount	Rotary	-	-	± 10%	-	Solder Lug	-	25mm	-55°C	320°C
RT025AS2200KB	24M7072 Data Sheet + RoHS	RHEOSTAT, 25W 220R VISHAY You previously purchased this product. View in Order History	Each	1+ $267.91	Restricted Item Minimum order of 1 items Multiples of 1 only Please enter a valid quantity Add	-	220ohm	25W	RT	-	Panel Mount	Rotary	-	-	± 10%	-	Solder Lug	-	25mm	-55°C	320°C

RT025AS22R0KB	24M7071 Data Sheet + RoHS	RHEOSTAT, 25W 22R VISHAY You previously purchased this product. View in Order History	Each	1+ $255.40 5+ $252.47 10+ $249.53 25+ $246.59	Restricted Item Minimum order of 1 items Multiples of 1 only Please enter a valid quantity Add	-	22ohm	25W	RT	-	Panel Mount	Rotary	-	-	± 10%	-	Solder Lug	-	25mm	-55°C	320°C

RT025AS1000KB	24M7066 Data Sheet + RoHS	RHEOSTAT, 25W 100R VISHAY You previously purchased this product. View in Order History	Each	1+ $258.11 5+ $252.49 10+ $246.88 25+ $242.29	Restricted Item Minimum order of 1 items Multiples of 1 only Please enter a valid quantity Add	-	100ohm	25W	RT	-	Panel Mount	Rotary	-	-	± 10%	-	Solder Lug	-	25mm	-55°C	320°C

REE25R	13B319 Data Sheet + RoHS	Rheostat, 25 ohm, 12.5 W, REE Series, Panel Mount, Round Shaft OHMITE You previously purchased this product. View in Order History	Each	5+ $177.56 10+ $168.21 25+ $144.85 50+ $135.50	Restricted Item Minimum order of 5 items Multiples of 1 only Please enter a valid quantity Add	-	25ohm	12.5W	REE Series	-	Panel Mount	Round Shaft	-	-	± 10%	-	Solder Lug	-	30.96mm	-	-

REE5K0E	64K5614 Data Sheet + RoHS	Rheostat, 5 kohm, 12.5 W, REE Series, Panel Mount, Round Shaft OHMITE You previously purchased this product. View in Order History	Each	1+ $202.18	Restricted Item Minimum order of 5 items Multiples of 1 only Please enter a valid quantity Add	-	5kohm	12.5W	REE Series	-	Panel Mount	Round Shaft	-	-	± 10%	-	Solder Lug	-	30.96mm	-	-

RES100E	71AK8247 New product + RoHS Date/Lot Code	RHEOSTAT, 100R, 10%, 12.5W, PANEL ROHS COMPLIANT: YES OHMITE You previously purchased this product. View in Order History	Each	1+ $76.21 5+ $74.48 10+ $72.75 25+ $70.50 50+ $67.91 100+ $67.89 More Pricing...	Restricted Item Minimum order of 1 items Multiples of 1 only Please enter a valid quantity Add Min: 1 Mult: 1	-	100ohm	12.5W	RES Series	-	Panel Mount	Round Shaft	-	High Power	± 10%	-	Solder Lug	-	33.34mm	-	-

RJS50RE	92Y3938 Data Sheet + RoHS	RHEOSTAT, WIREWOUND, 50OHM, 50W OHMITE You previously purchased this product. View in Order History	Each	1+ $104.36 5+ $100.32 10+ $96.27 25+ $87.92 50+ $85.62 100+ $84.12 More Pricing...	Restricted Item Minimum order of 1 items Multiples of 1 only Please enter a valid quantity Add	-	50ohm	50W	RJS	-	Panel Mount	Flatted	-	-	± 10%	-	Solder Lug	-	34.93mm	-	-

RT055AS1002KB..	24M7077 Data Sheet + RoHS Date/Lot Code	RHEOSTAT, WIREWOUND, 10K, 10%, 55W VISHAY You previously purchased this product. View in Order History	Each	1+ $680.67	Restricted Item Minimum order of 1 items Multiples of 1 only Please enter a valid quantity Add	-	10kohm	55W	RT	-	Panel Mount	Rotary	-	-	± 10%	-	Solder Lug	-	36mm	-55°C	320°C

RT055AS10R0KB	24M7078 Data Sheet + RoHS	RHEOSTAT, WIREWOUND, 10R, 10%, 55W VISHAY You previously purchased this product. View in Order History	Each	1+ $918.76 5+ $903.42 10+ $888.08	Restricted Item Minimum order of 1 items Multiples of 1 only Please enter a valid quantity Add	-	10ohm	55W	RT	-	Panel Mount	Rotary	-	-	± 10%	-	Solder Lug	-	36mm	-55°C	320°C

RT055AS4701KB	24M7082 Data Sheet + RoHS	RHEOSTAT, 55W 4K7 VISHAY You previously purchased this product. View in Order History	Each	1+ $906.02 5+ $890.90 10+ $875.76	Restricted Item Minimum order of 1 items Multiples of 1 only Please enter a valid quantity Add	-	4.7kohm	55W	RT	-	Panel Mount	Rotary	-	-	± 10%	-	Solder Lug	-	36mm	-55°C	320°C

RRS12R5E	64K5946 Data Sheet + RoHS	Rheostat, Wirewound, 12.5 ohm, 500 W, RRS Series, Panel Mount, Flatted OHMITE You previously purchased this product. View in Order History	Each	1+ $721.07	Restricted Item Minimum order of 1 items Multiples of 1 only Please enter a valid quantity Add	-	12.5ohm	500W	RRS Series	-	Panel Mount	Flatted	-	-	± 10%	-	Solder Lug	-	53.98mm	-	-

RRS50RE	64K5961 Data Sheet + RoHS	Rheostat, 50 ohm, 500 W, RRS Series, Panel Mount, Flatted OHMITE You previously purchased this product. View in Order History	Each	1+ $721.07	Restricted Item Minimum order of 1 items Multiples of 1 only Please enter a valid quantity Add	-	50ohm	500W	RRS Series	-	Panel Mount	Flatted	-	-	± 10%	-	Solder Lug	-	53.98mm	-	-

RRS250E	64K5955 Data Sheet + RoHS	Rheostat, Wirewound, 250 ohm, 500 W, RRS Series, Panel Mount, Flatted OHMITE You previously purchased this product. View in Order History	Each	1+ $721.07	Restricted Item Minimum order of 1 items Multiples of 1 only Please enter a valid quantity Add	-	250ohm	500W	RRS Series	-	Panel Mount	Flatted	-	-	± 10%	-	Solder Lug	-	53.98mm	-	-

RRS175E	64K5949 Data Sheet + RoHS	Rheostat, 175 ohm, 500 W, RRS Series, Panel Mount, Flatted OHMITE You previously purchased this product. View in Order History	Each	1+ $721.07	Restricted Item Minimum order of 1 items Multiples of 1 only Please enter a valid quantity Add	-	175ohm	500W	RRS Series	-	Panel Mount	Flatted	-	-	± 10%	-	Solder Lug	-	53.98mm	-	-

RRS1K0E	64K5942 + RoHS	Rheostat, Wirewound, 1 kohm, 500 W, RRS Series, Panel Mount, Flatted OHMITE You previously purchased this product. View in Order History	Each	1+ $730.26	Restricted Item Minimum order of 1 items Multiples of 1 only Please enter a valid quantity Add	-	1kohm	500W	RRS Series	-	Panel Mount	Flatted	-	-	± 10%	-	Solder Lug	-	53.98mm	-	-

RRS40RE	64K5959 Data Sheet + RoHS	Rheostat, Wirewound, 40 ohm, 500 W, RRS Series, Panel Mount, Flatted OHMITE You previously purchased this product. View in Order History	Each	1+ $721.07	Restricted Item Minimum order of 1 items Multiples of 1 only Please enter a valid quantity Add	-	40ohm	500W	RRS Series	-	Panel Mount	Flatted	-	-	± 10%	-	Solder Lug	-	53.98mm	-	-

RRS500E	64K5962 Data Sheet + RoHS	Rheostat, Wirewound, 500 ohm, 500 W, RRS Series, Panel Mount, Flatted OHMITE You previously purchased this product. View in Order History	Each	1+ $721.07	Restricted Item Minimum order of 1 items Multiples of 1 only Please enter a valid quantity Add	-	500ohm	500W	RRS Series	-	Panel Mount	Flatted	-	-	± 10%	-	Solder Lug	-	53.98mm	-	-

RRS16RE	64K5948 Data Sheet + RoHS	Rheostat, Wirewound, 16 ohm, 500 W, RRS Series, Panel Mount, Flatted OHMITE You previously purchased this product. View in Order History	Each	1+ $721.07	Restricted Item Minimum order of 1 items Multiples of 1 only Please enter a valid quantity Add	-	16ohm	500W	RRS Series	-	Panel Mount	Flatted	-	-	± 10%	-	Solder Lug	-	53.98mm	-	-

RRS1K0	01F7661 Data Sheet	Rheostat, Wirewound, 1 kohm, 500 W, RRS Series, Panel Mount, Flatted OHMITE You previously purchased this product. View in Order History	Each	1+ $689.15 5+ $654.70 10+ $620.24	Restricted Item Minimum order of 1 items Multiples of 1 only Please enter a valid quantity Add	-	1kohm	500W	RRS Series	-	Panel Mount	Flatted	-	-	± 10%	-	Solder Lug	-	53.98mm	-	-

RPS200E	64K5930 Data Sheet + RoHS	Rheostat, Wirewound, 200 ohm, 225 W, RPS Series, Panel Mount, Flatted OHMITE You previously purchased this product. View in Order History	Each	1+ $427.92	Restricted Item Minimum order of 5 items Multiples of 1 only Please enter a valid quantity Add	-	200ohm	225W	RPS Series	-	Panel Mount	Flatted	-	-	± 10%	-	Solder Lug	-	53.98mm	-	-

RRS8R0E	64K5964 Data Sheet + RoHS	Rheostat, Wirewound, 8 ohm, 500 W, RRS Series, Panel Mount, Flatted OHMITE You previously purchased this product. View in Order History	Each	1+ $688.72	Restricted Item Minimum order of 1 items Multiples of 1 only Please enter a valid quantity Add	-	8ohm	500W	RRS Series	-	Panel Mount	Flatted	-	-	± 10%	-	Solder Lug	-	53.98mm	-	-