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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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D25K400	13P3573 Data Sheet	Rheostat, 400 ohm, 25 W, 210 Series, Panel Mount, Slide, High Power, Flame Proof OHMITE You previously purchased this product. View in Order History	Each	1+ $21.90 5+ $21.10 10+ $20.35 25+ $19.41	Restricted Item Minimum order of 4 items Multiples of 1 only Please enter a valid quantity Add	400ohm	400ohm	25W	210 Series	625V	Panel Mount	Slide	± 260ppm/°C	High Power, Flame Proof	± 10%	Wirewound	Solder Lug	50.8mm	-	-	-
RES200	23C0462 Data Sheet	Rheostat, 200 ohm, 12.5 W, RES Series, Panel Mount, Flatted OHMITE You previously purchased this product. View in Order History	Each	1+ $85.86	Restricted Item Minimum order of 5 items Multiples of 1 only Please enter a valid quantity Add	200ohm	200ohm	12.5W	RES Series	305V	Panel Mount	Flatted	-	-	± 10%	Wirewound	Solder Lug	33.34mm	-	-°C	-°C
RES200E	64K5669 Data Sheet + RoHS	Rheostat, 200 ohm, 12.5 W, RES Series, Panel Mount, Flatted 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	-	200ohm	12.5W	RES Series	-	Panel Mount	Flatted	-	-	± 10%	-	Solder Lug	33.34mm	-	-	-
REL50RE	64K5647 Data Sheet + RoHS Date/Lot Code	Rheostat, Wirewound, 50 ohm, 12.5 W, REL Series, Panel Mount, Screwdriver Slot OHMITE You previously purchased this product. View in Order History	Each	1+ $114.11 5+ $108.41 10+ $102.71 25+ $88.45 50+ $82.74 100+ $81.22 More Pricing...	Restricted Item Minimum order of 1 items Multiples of 1 only Please enter a valid quantity Add	-	50ohm	12.5W	REL Series	-	Panel Mount	Screwdriver Slot	-	-	± 10%	-	Solder Lug	-	17.46mm	-	-
RHS1K5E	64K5738 Data Sheet + RoHS Date/Lot Code	Rheostat, Wirewound, 1.5 kohm, 25 W, RHS Series, Panel Mount, Flatted OHMITE You previously purchased this product. View in Order History	Each	5+ $89.21 10+ $86.21 25+ $75.30 50+ $70.59 100+ $68.24	Restricted Item Minimum order of 5 items Multiples of 1 only Please enter a valid quantity Add	-	1.5kohm	25W	RHS Series	-	Panel Mount	Flatted	-	-	± 10%	-	Solder Lug	-	34.93mm	-	-

RKS25RE	64K5833 Data Sheet + RoHS Date/Lot Code	Rheostat, Wirewound, 25 ohm, 100 W, RKS Series, Panel Mount, Flatted OHMITE You previously purchased this product. View in Order History	Each	1+ $167.30 5+ $146.53 10+ $125.74	Restricted Item Minimum order of 1 items Multiples of 1 only Please enter a valid quantity Add	-	25ohm	100W	RKS Series	-	Panel Mount	Flatted	-	-	± 10%	-	Solder Lug	-	44.45mm	-	-

RHS3R0E	64K5754 Data Sheet + RoHS Date/Lot Code	Rheostat, Wirewound, 3 ohm, 25 W, RHS Series, Panel Mount, Flatted OHMITE You previously purchased this product. View in Order History	Each	1+ $65.46 5+ $65.46 10+ $65.46 25+ $65.46	Restricted Item Minimum order of 1 items Multiples of 1 only Please enter a valid quantity Add	-	3ohm	25W	RHS Series	-	Panel Mount	Flatted	-	-	± 10%	-	Solder Lug	-	34.93mm	-	-

RHL25KE	64K5722 Data Sheet + RoHS	Rheostat, Wirewound, 25 kohm, 25 W, RHL Series, Panel Mount, Flatted OHMITE You previously purchased this product. View in Order History	Each	1+ $118.52	Restricted Item Minimum order of 5 items Multiples of 1 only Please enter a valid quantity Add	-	25kohm	25W	RHL Series	-	Panel Mount	Flatted	-	-	± 10%	-	Solder Lug	-	34.93mm	-	-

RES10R	01F3487 Data Sheet	Rheostat, Wirewound, 10 ohm, 12.5 W, RES Series, Panel Mount, Round Shaft OHMITE You previously purchased this product. View in Order History	Each	1+ $85.86	Restricted Item Minimum order of 5 items Multiples of 1 only Please enter a valid quantity Add	-	10ohm	12.5W	RES Series	-	Panel Mount	Round Shaft	-	-	± 10%	-	Solder Lug	-	17.46mm	-	-

RHS25R	01F7552 Data Sheet Date/Lot Code	Rheostat, Wirewound, 25 ohm, 25 W, RHS Series, Panel Mount, Flatted OHMITE You previously purchased this product. View in Order History	Each	1+ $101.83 5+ $97.48 10+ $93.12 25+ $77.59 50+ $72.75 100+ $70.31 More Pricing...	Restricted Item Minimum order of 1 items Multiples of 1 only Please enter a valid quantity Add	-	25ohm	25W	RHS Series	-	Panel Mount	Flatted	-	-	± 10%	-	Solder Lug	-	34.93mm	-	-

RES25RE	64K5670 Data Sheet + RoHS	Rheostat, Wirewound, 25 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	-	25ohm	12.5W	RES Series	-	Panel Mount	Round Shaft	-	-	± 10%	-	Solder Lug	-	17.46mm	-	-

RHS1K0E	64K5737 Data Sheet + RoHS Date/Lot Code	Rheostat, Wirewound, 1 kohm, 25 W, RHS Series, Panel Mount, Flatted OHMITE You previously purchased this product. View in Order History	Each	1+ $94.60 5+ $90.80 10+ $87.01 25+ $78.36 50+ $76.25 100+ $73.70 More Pricing...	Restricted Item Minimum order of 1 items Multiples of 1 only Please enter a valid quantity Add	-	1kohm	25W	RHS Series	-	Panel Mount	Flatted	-	-	± 10%	-	Solder Lug	-mm	34.93mm	-°C	-°C

RJS50KE	64K5813 Data Sheet + RoHS Date/Lot Code	Rheostat, Wirewound, 50 kohm, 50 W, RJS Series, Panel Mount, Flatted OHMITE You previously purchased this product. View in Order History	Each	1+ $151.23 5+ $146.53 10+ $141.81 25+ $126.81 50+ $119.22 100+ $118.04 More Pricing...	Restricted Item Minimum order of 1 items Multiples of 1 only Please enter a valid quantity Add	-	50kohm	50W	RJS Series	-	Panel Mount	Flatted	-	-	± 10%	-	Solder Lug	-	34.93mm	-	-

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	-	-

RES5K0E	64K5676 Data Sheet + RoHS	Rheostat, Wirewound, 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	-	5kohm	12.5W	RES Series	-	Panel Mount	Round Shaft	-	-	± 10%	-	Solder Lug	-	17.46mm	-	-

RGS200E	64K5696 Data Sheet + RoHS Date/Lot Code	Rheostat, Wirewound, 200 ohm, 75 W, RGS Series, Panel Mount, Flatted OHMITE You previously purchased this product. View in Order History	Each	1+ $157.87 5+ $149.99 10+ $142.11 25+ $122.37 50+ $114.47 100+ $112.37 More Pricing...	Restricted Item Minimum order of 1 items Multiples of 1 only Please enter a valid quantity Add	-	200ohm	75W	RGS Series	-	Panel Mount	Flatted	-	-	± 10%	-	Solder Lug	-	44.45mm	-	-

RJS6R0E	64K5816 Data Sheet + RoHS	Rheostat, Wirewound, 6 ohm, 50 W, RJS Series, Panel Mount, Flatted OHMITE You previously purchased this product. View in Order History	Each	5+ $124.35 10+ $115.30 25+ $107.02 50+ $104.75 100+ $98.73	Restricted Item Minimum order of 5 items Multiples of 1 only Please enter a valid quantity Add	-	6ohm	50W	RJS Series	-	Panel Mount	Flatted	-	-	± 10%	-	Solder Lug	-	34.93mm	-	-

RES1K0E	64K5654 Data Sheet + RoHS	Rheostat, Wirewound, 1 kohm, 12.5 W, RES Series, Panel Mount, Round Shaft OHMITE You previously purchased this product. View in Order History	Each	1+ $81.00	Restricted Item Minimum order of 5 items Multiples of 1 only Please enter a valid quantity Add	-	1kohm	12.5W	RES Series	-	Panel Mount	Round Shaft	-	-	± 10%	-	Solder Lug	-	17.46mm	-	-

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	-	-

RES6R0E	64K5680 Data Sheet + RoHS	Rheostat, Wirewound, 6 ohm, 12.5 W, RES Series, Panel Mount, Round Shaft OHMITE You previously purchased this product. View in Order History	Each	1+ $83.20	Restricted Item Minimum order of 5 items Multiples of 1 only Please enter a valid quantity Add	-	6ohm	12.5W	RES Series	-	Panel Mount	Round Shaft	-	-	± 10%	-	Solder Lug	-	17.46mm	-	-

RGS1K0E	64K5686 Data Sheet + RoHS Date/Lot Code	Rheostat, Wirewound, 1 kohm, 75 W, RGS Series, Panel Mount, Flatted OHMITE You previously purchased this product. View in Order History	Each	5+ $148.51 10+ $140.70 25+ $121.17 50+ $113.35 100+ $111.26	Restricted Item Minimum order of 5 items Multiples of 1 only Please enter a valid quantity Add	-	1kohm	75W	RGS Series	-	Panel Mount	Flatted	-	-	± 10%	-	Solder Lug	-	44.45mm	-	-

RJS22RE	64K5803 Data Sheet + RoHS	Rheostat, Wirewound, 22 ohm, 50 W, RJS Series, Panel Mount, Flatted OHMITE You previously purchased this product. View in Order History	Each	1+ $107.27	Restricted Item Minimum order of 5 items Multiples of 1 only Please enter a valid quantity Add	-	22ohm	50W	RJS Series	-	Panel Mount	Flatted	-	-	± 10%	-	Solder Lug	-	34.93mm	-	-

RHS125E	64K5743 Data Sheet + RoHS	Rheostat, Wirewound, 125 ohm, 25 W, RHS Series, Panel Mount, Flatted OHMITE You previously purchased this product. View in Order History	Each	5+ $76.78 10+ $74.27 25+ $69.18 50+ $64.85 100+ $62.69	Restricted Item Minimum order of 5 items Multiples of 1 only Please enter a valid quantity Add	-	125ohm	25W	RHS Series	-	Panel Mount	Flatted	-	-	± 10%	-	Solder Lug	-	34.93mm	-	-

RNS400E	64K5912 Data Sheet + RoHS	Rheostat, Wirewound, 400 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	-	400ohm	300W	RNS Series	-	Panel Mount	Flatted	-	-	± 10%	-	Solder Lug	-	60.33mm	-	-

RNS1K5E	64K5897 Data Sheet + RoHS	Rheostat, Wirewound, 1.5 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	-	1.5kohm	300W	RNS Series	-	Panel Mount	Flatted	-	-	± 10%	-	Solder Lug	-	60.33mm	-	-