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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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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
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
RLS4K5E	64K5863 Data Sheet + RoHS Date/Lot Code	Rheostat, Wirewound, 4.5 kohm, 150 W, RLS Series, Panel Mount, Flatted OHMITE You previously purchased this product. View in Order History	Each	1+ $225.37 5+ $225.37 10+ $225.37 25+ $195.32	Restricted Item Minimum order of 1 items Multiples of 1 only Please enter a valid quantity Add	-	4.5kohm	150W	RLS Series	-	Panel Mount	Flatted	-	-	± 10%	-	Solder Lug	-	50.8mm	-	-
RLS4K5	01F7631 Data Sheet	Rheostat, Wirewound, 4.5 kohm, 150 W, RLS Series, Panel Mount, Flatted OHMITE You previously purchased this product. View in Order History	Each	5+ $213.98 10+ $202.71 25+ $174.56	Restricted Item Minimum order of 5 items Multiples of 1 only Please enter a valid quantity Add	-	4.5kohm	150W	RLS Series	-	Panel Mount	Flatted	-	-	± 10%	-	Solder Lug	-	50.8mm	-	-
RES3K5E	64K5672 Data Sheet + RoHS	Rheostat, Wirewound, 3.5 kohm, 12.5 W, RES Series, Panel Mount, Round Shaft OHMITE You previously purchased this product. View in Order History	Each	1+ $86.17	Restricted Item Minimum order of 5 items Multiples of 1 only Please enter a valid quantity Add	-	3.5kohm	12.5W	RES Series	-	Panel Mount	Round Shaft	-	-	± 10%	-	Solder Lug	-	17.46mm	-	-

RHS3K5E	64K5753 Data Sheet + RoHS	Rheostat, Wirewound, 3.5 kohm, 25 W, RHS Series, Panel Mount, Screwdriver Slot OHMITE You previously purchased this product. View in Order History	Each	1+ $94.01	Restricted Item Minimum order of 5 items Multiples of 1 only Please enter a valid quantity Add	-	3.5kohm	25W	RHS Series	-	Panel Mount	Screwdriver Slot	-	-	± 10%	-	-	-	-	-	-

RLS2K25	01F7630 Data Sheet Data Sheet	Rheostat, Wirewound, 2.25 kohm, 150 W, RLS Series, Panel Mount, Flatted OHMITE You previously purchased this product. View in Order History	Each	1+ $260.14	Restricted Item Minimum order of 5 items Multiples of 1 only Please enter a valid quantity Add	-	2.25kohm	150W	RLS Series	-	Panel Mount	Flatted	-	-	± 10%	-	Solder Lug	-	50.8mm	-	-

RLS2K25E	64K5854 Data Sheet + RoHS	Rheostat, Wirewound, 2.25 kohm, 150 W, RLS Series, Panel Mount, Flatted OHMITE You previously purchased this product. View in Order History	Each	1+ $238.57	Restricted Item Minimum order of 5 items Multiples of 1 only Please enter a valid quantity Add	-	2.25kohm	150W	RLS Series	-	Panel Mount	Flatted	-	-	± 10%	-	Solder Lug	-	50.8mm	-	-

RLS1K8E	64K5847 Data Sheet Data Sheet + RoHS	Rheostat, 1.8 kohm, 150 W, RLS Series, Panel Mount, Flatted OHMITE You previously purchased this product. View in Order History	Each	1+ $238.57	Restricted Item Minimum order of 5 items Multiples of 1 only Please enter a valid quantity Add	-	1.8kohm	150W	RLS Series	-	Panel Mount	Flatted	-	-	± 10%	-	Solder Lug	-	50.8mm	-	-

RPS1K75E	64K5921 Data Sheet + RoHS	Rheostat, 1.75 kohm, 225 W, RPS Series, Panel Mount, Flatted OHMITE You previously purchased this product. View in Order History	Each	1+ $466.86	Restricted Item Minimum order of 5 items Multiples of 1 only Please enter a valid quantity Add	-	1.75kohm	225W	RPS Series	-	Panel Mount	Flatted	-	-	± 10%	-	Solder Lug	-	53.98mm	-	-

RJS1K6E	64K5792 + RoHS	Rheostat, 1.6 kohm, 50 W, RJS Series, Panel Mount, Flatted OHMITE You previously purchased this product. View in Order History	Each	1+ $112.81	Restricted Item Minimum order of 5 items Multiples of 1 only Please enter a valid quantity Add	-	1.6kohm	50W	RJS Series	-	Panel Mount	Flatted	-	-	± 10%	-	Solder Lug	-	34.93mm	-	-

RJS1K6	01F7591 Data Sheet	Rheostat, Wirewound, 1.6 kohm, 50 W, RJS Series, Panel Mount, Flatted OHMITE You previously purchased this product. View in Order History	Each	5+ $101.11 10+ $95.79 25+ $82.49 50+ $77.15 100+ $71.83	Restricted Item Minimum order of 5 items Multiples of 1 only Please enter a valid quantity Add	-	1.6kohm	50W	RJS Series	-	Panel Mount	Flatted	-	-	± 10%	-	Solder Lug	-	34.93mm	-	-

RLS1K25	01F7629 Data Sheet	Rheostat, Wirewound, 1.25 kohm, 150 W, RLS Series, Panel Mount, Screwdriver Slot OHMITE You previously purchased this product. View in Order History	Each	5+ $213.98 10+ $202.71 25+ $174.56	Restricted Item Minimum order of 5 items Multiples of 1 only Please enter a valid quantity Add	-	1.25kohm	150W	RLS Series	-	Panel Mount	Screwdriver Slot	-	-	± 10%	-	-	-	-	-	-

RLS1K25E	64K5846 Data Sheet + RoHS	Rheostat, Wirewound, 1.25 kohm, 150 W, RLS Series, Panel Mount, Flatted OHMITE You previously purchased this product. View in Order History	Each	1+ $238.57	Restricted Item Minimum order of 5 items Multiples of 1 only Please enter a valid quantity Add	-	1.25kohm	150W	RLS Series	-	Panel Mount	Flatted	-	-	± 10%	-	Solder Lug	-	50.8mm	-	-

RNS1K2E	64K5896 Data Sheet + RoHS	Rheostat, Wirewound, 1.2 kohm, 300 W, RNS Series, Panel Mount, Flatted OHMITE You previously purchased this product. View in Order History	Each	1+ $466.86	Restricted Item Minimum order of 5 items Multiples of 1 only Please enter a valid quantity Add	-	1.2kohm	300W	RNS Series	-	Panel Mount	Flatted	-	-	± 10%	-	Solder Lug	-	60.33mm	-	-

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

RNS900E	64K5918 Data Sheet + RoHS	Rheostat, 900 ohm, 300 W, RNS Series, Panel Mount, Flatted OHMITE You previously purchased this product. View in Order History	Each	1+ $440.95	Restricted Item Minimum order of 5 items Multiples of 1 only Please enter a valid quantity Add	-	900ohm	300W	RNS Series	-	Panel Mount	Flatted	-	-	± 10%	-	Solder Lug	-	60.33mm	-	-

RJS800E	64K5820 Data Sheet + RoHS	Rheostat, Wirewound, 800 ohm, 50 W, RJS Series, Panel Mount, Flatted OHMITE You previously purchased this product. View in Order History	Each	1+ $103.11	Restricted Item Minimum order of 5 items Multiples of 1 only Please enter a valid quantity Add	-	800ohm	50W	RJS Series	-	Panel Mount	Flatted	-	-	± 10%	-	Solder Lug	-	34.93mm	-	-

RJS800	01F7589 Data Sheet	Rheostat, Wirewound, 800 ohm, 50 W, RJS Series, Panel Mount, Flatted OHMITE You previously purchased this product. View in Order History	Each	5+ $97.34 10+ $92.46 25+ $77.87 50+ $73.01 100+ $70.57	Restricted Item Minimum order of 5 items Multiples of 1 only Please enter a valid quantity Add	-	800ohm	50W	RJS Series	-	Panel Mount	Flatted	-	-	± 10%	-	Solder Lug	-	34.93mm	-	-

RHS750E	64K5763 Data Sheet + RoHS Date/Lot Code	Rheostat, Wirewound, 750 ohm, 25 W, RHS Series, Panel Mount, Flatted OHMITE You previously purchased this product. View in Order History	Each	1+ $91.41 5+ $89.89 10+ $88.37 25+ $77.59 50+ $72.74 100+ $70.31 More Pricing...	Restricted Item Minimum order of 1 items Multiples of 1 only Please enter a valid quantity Add	-	750ohm	25W	RHS Series	-	Panel Mount	Flatted	-	-	± 10%	-	Solder Lug	-	34.93mm	-	-

RKS750E	64K5844 Data Sheet + RoHS	Rheostat, 750 ohm, 100 W, RKS Series, Panel Mount, Flatted OHMITE You previously purchased this product. View in Order History	Each	1+ $164.08	Restricted Item Minimum order of 5 items Multiples of 1 only Please enter a valid quantity Add	-	750ohm	100W	RKS Series	-	Panel Mount	Flatted	-	-	± 10%	-	Solder Lug	-	44.45mm	-	-

RHS750	01F7562 Data Sheet	Rheostat, Wirewound, 750 ohm, 25 W, RHS Series, Panel Mount, Flatted OHMITE You previously purchased this product. View in Order History	Each	1+ $99.08	Restricted Item Minimum order of 5 items Multiples of 1 only Please enter a valid quantity Add	-	750ohm	25W	RHS Series	-	Panel Mount	Flatted	-	-	± 10%	-	Solder Lug	-	34.93mm	-	-

RNS700E	64K5916 Data Sheet + RoHS	Rheostat, Wirewound, 700 ohm, 300 W, RNS Series, Panel Mount, Flatted OHMITE You previously purchased this product. View in Order History	Each	1+ $440.95	Restricted Item Minimum order of 5 items Multiples of 1 only Please enter a valid quantity Add	-	700ohm	300W	RNS Series	-	Panel Mount	Flatted	-	-	± 10%	-	Solder Lug	-	60.33mm	-	-

RJS500	01F7588 Data Sheet	Rheostat, Wirewound, 500 ohm, 50 W, RJS Series, Panel Mount, Flatted OHMITE You previously purchased this product. View in Order History	Each	5+ $97.34 10+ $92.46 25+ $77.87 50+ $73.01 100+ $70.57	Restricted Item Minimum order of 5 items Multiples of 1 only Please enter a valid quantity Add	-	500ohm	50W	RJS Series	-	Panel Mount	Flatted	-	-	± 10%	-	Solder Lug	-	34.93mm	-	-

RHL500	13B390 Data Sheet Data Sheet	Rheostat, 500 ohm, 25 W, RHL Series, Panel Mount, Flatted OHMITE You previously purchased this product. View in Order History	Each	5+ $87.62 10+ $83.23 25+ $70.08 50+ $65.71 100+ $63.52	Restricted Item Minimum order of 5 items Multiples of 1 only Please enter a valid quantity Add	-	500ohm	25W	RHL Series	-	Panel Mount	Flatted	-	-	± 10%	-	Solder Lug	-	34.93mm	-	-