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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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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	-	-
RES250E	64K5671 Data Sheet + RoHS	Rheostat, Wirewound, 250 ohm, 12.5 W, RES Series, Panel Mount, Round Shaft OHMITE You previously purchased this product. View in Order History	Each	1+ $78.76	Restricted Item Minimum order of 5 items Multiples of 1 only Please enter a valid quantity Add	-	250ohm	12.5W	RES Series	-	Panel Mount	Round Shaft	-	-	± 10%	-	Solder Lug	-	17.46mm	-	-
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	-	-
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	-	-

RJS8R0	01F7577 Data Sheet	Rheostat, Wirewound, 8 ohm, 50 W, RJS Series, Panel Mount, Flatted OHMITE You previously purchased this product. View in Order History	Each	5+ $109.96 10+ $104.16 25+ $89.70 50+ $83.91 100+ $78.12	Restricted Item Minimum order of 5 items Multiples of 1 only Please enter a valid quantity Add	-	8ohm	50W	RJS Series	-	Panel Mount	Flatted	-	-	± 10%	-	Solder Lug	-	34.93mm	-	-

RNS5R0	04F8880 Data Sheet	Rheostat, Wirewound, 5 ohm, 300 W, RNS Series, Panel Mount, Flatted OHMITE You previously purchased this product. View in Order History	Each	5+ $410.84 10+ $389.21 25+ $335.17	Restricted Item Minimum order of 5 items Multiples of 1 only Please enter a valid quantity Add	-	5ohm	300W	RNS Series	-	Panel Mount	Flatted	-	-	± 10%	-	Solder Lug	-	60.33mm	-	-

RHS75R	01F7555 Data Sheet	Rheostat, Wirewound, 75 ohm, 25 W, RHS Series, Panel Mount, Flatted OHMITE You previously purchased this product. View in Order History	Each	5+ $81.68 10+ $77.59 25+ $65.34 50+ $61.26 100+ $59.22	Restricted Item Minimum order of 5 items Multiples of 1 only Please enter a valid quantity Add	-	75ohm	25W	RHS Series	-	Panel Mount	Flatted	-	-	± 10%	-	Solder Lug	-	34.93mm	-	-

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	-	-

RNS5R0E	64K5913 Data Sheet + RoHS	Rheostat, 5 ohm, 300 W, RNS Series, Panel Mount, Flatted OHMITE You previously purchased this product. View in Order History	Each	1+ $402.20	Restricted Item Minimum order of 5 items Multiples of 1 only Please enter a valid quantity Add	-	5ohm	300W	RNS Series	-	Panel Mount	Flatted	-	-	± 10%	-	Solder Lug	-	60.33mm	-	-

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	-	-

RNS300E	64K5910 Data Sheet + RoHS	Rheostat, Wirewound, 300 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	-	300ohm	300W	RNS Series	-	Panel Mount	Flatted	-	-	± 10%	-	Solder Lug	-	60.33mm	-	-

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	-	-

RNS25RE	64K5908 Data Sheet + RoHS	Rheostat, Wirewound, 25 ohm, 300 W, RNS Series, Panel Mount, Flatted OHMITE You previously purchased this product. View in Order History	Each	1+ $389.55	Restricted Item Minimum order of 5 items Multiples of 1 only Please enter a valid quantity Add	-	25ohm	300W	RNS Series	-	Panel Mount	Flatted	-	-	± 10%	-	Solder Lug	-	60.33mm	-	-

RRS125	01F7655 Data Sheet	Rheostat, Wirewound, 125 ohm, 500 W, RRS Series, Panel Mount, Flatted OHMITE You previously purchased this product. View in Order History	Each	1+ $786.02	Restricted Item Minimum order of 1 items Multiples of 1 only Please enter a valid quantity Add	-	125ohm	500W	RRS Series	-	Panel Mount	Flatted	-	-	± 10%	-	Solder Lug	-	53.98mm	-	-

RJS12R	01F7578 Data Sheet Date/Lot Code	Rheostat, Wirewound, 12 ohm, 50 W, RJS Series, Panel Mount, Flatted OHMITE You previously purchased this product. View in Order History	Each	50+ $76.00 100+ $73.47	Restricted Item Minimum order of 80 items Multiples of 1 only Please enter a valid quantity Add	-	12ohm	50W	RJS Series	-	Panel Mount	Flatted	-	-	± 10%	-	Solder Lug	-	34.93mm	-	-

RPS100E	64K5924 Data Sheet + RoHS	Rheostat, 100 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	-	100ohm	225W	RPS Series	-	Panel Mount	Flatted	-	-	± 10%	-	Solder Lug	-	53.98mm	-	-

RRS1K5E	64K5943 Data Sheet + RoHS	Rheostat, Wirewound, 1.5 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	-	1.5kohm	500W	RRS Series	-	Panel Mount	Flatted	-	-	± 10%	-	Solder Lug	-	53.98mm	-	-

RJS125E	64K5796 Data Sheet + RoHS	Rheostat, Wirewound, 125 ohm, 50 W, RJS Series, Panel Mount, Flatted OHMITE You previously purchased this product. View in Order History	Each	5+ $108.69 10+ $100.79 25+ $93.54 50+ $91.56 100+ $86.29	Restricted Item Minimum order of 5 items Multiples of 1 only Please enter a valid quantity Add	-	125ohm	50W	RJS Series	-	Panel Mount	Flatted	-	-	± 10%	-	Solder Lug	-	34.93mm	-	-

RHS10RE	64K5741 Data Sheet + RoHS Date/Lot Code	Rheostat, Wirewound, 10 ohm, 25 W, RHS Series, Panel Mount, Flatted OHMITE You previously purchased this product. View in Order History	Each	1+ $89.62 5+ $86.34 10+ $83.05 25+ $71.99 50+ $67.49 100+ $66.27 More Pricing...	Restricted Item Minimum order of 1 items Multiples of 1 only Please enter a valid quantity Add	-	10ohm	25W	RHS Series	-	Panel Mount	Flatted	-	-	± 10%	-	Solder Lug	-	34.93mm	-	-

RUS2R5E	64K5977 Data Sheet + RoHS	Rheostat, Wirewound, 2.5 ohm, 1 kW, RUS Series, Panel Mount, Flatted OHMITE You previously purchased this product. View in Order History	Each	1+ $1,766.30	Restricted Item Minimum order of 1 items Multiples of 1 only Please enter a valid quantity Add	-	2.5ohm	1kW	RUS Series	-	Panel Mount	Flatted	-	-	± 10%	-	Solder Lug	-	76.2mm	-	-

RKS10R	01F7604 Data Sheet	Rheostat, Wirewound, 10 ohm, 100 W, RKS Series, Panel Mount, Screwdriver Slot OHMITE You previously purchased this product. View in Order History	Each	5+ $147.08 10+ $139.34 25+ $119.99 50+ $112.24 100+ $104.50	Restricted Item Minimum order of 5 items Multiples of 1 only Please enter a valid quantity Add	-	10ohm	100W	RKS Series	-	Panel Mount	Screwdriver Slot	-	-	± 10%	-	Solder Lug	-	44.45mm	-	-

RKS100	01F7609 Data Sheet	Rheostat, Wirewound, 100 ohm, 100 W, RKS Series, Panel Mount, Flatted OHMITE You previously purchased this product. View in Order History	Each	1+ $178.83	Restricted Item Minimum order of 5 items Multiples of 1 only Please enter a valid quantity Add	-	100ohm	100W	RKS Series	-	Panel Mount	Flatted	-	-	± 10%	-	Solder Lug	-	44.45mm	-	-