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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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RLS5K0E	52M8388 Data Sheet + RoHS	Rheostat, Wirewound, 5 kohm, 150 W, RLS Series, Panel Mount, Flatted OHMITE You previously purchased this product. View in Order History	Each	null	Restricted Item	-	5kohm	150W	RLS Series	-	Panel Mount	Flatted	-	-	± 10%	-	Solder Lug	-	50.8mm	-	-
RKS2R0	01F7600 Data Sheet	Rheostat, Wirewound, 2 ohm, 100 W, RKS Series, Panel Mount, Flatted OHMITE You previously purchased this product. View in Order History	Each	null	Restricted Item	-	2ohm	100W	RKS Series	-	Panel Mount	Flatted	-	-	± 10%	-	Solder Lug	-	44.45mm	-	-
RJS22R	01F7580 Data Sheet Date/Lot Code	Rheostat, 22 ohm, 50 W, RJS Series, Panel Mount, Flatted OHMITE You previously purchased this product. View in Order History	Each	1+ $18.31 5+ $18.31 10+ $18.31 25+ $18.31 50+ $18.31 100+ $18.31 More Pricing...	Restricted Item Minimum order of 1 items Multiples of 1 only Please enter a valid quantity Add	-	22ohm	50W	RJS Series	-	Panel Mount	Flatted	-	-	± 10%	-	Solder Lug	-	34.93mm	-	-
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	-	-	-
RES6R0	01F3485 Data Sheet Data Sheet	Rheostat, 6 ohm, 12.5 W, RES Series, Panel Mount, Round Shaft OHMITE You previously purchased this product. View in Order History	Each	10+ $47.66 25+ $47.29 50+ $46.90 100+ $45.49	Restricted Item Minimum order of 10 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	-	-

RHS175	01F7558 Data Sheet	Rheostat, Wirewound, 175 ohm, 25 W, RHS Series, Panel Mount, Flatted OHMITE You previously purchased this product. View in Order History	Each	5+ $65.30 10+ $63.81 25+ $63.35 50+ $61.10 100+ $60.62	Restricted Item Minimum order of 5 items Multiples of 1 only Please enter a valid quantity Add	-	175ohm	25W	RHS Series	-	Panel Mount	Flatted	-	-	± 10%	-	Solder Lug	-	34.93mm	-	-

RHS10R	01F7550 Data Sheet	Rheostat, Wirewound, 10 ohm, 25 W, RHS Series, Panel Mount, Flatted OHMITE You previously purchased this product. View in Order History	Each	5+ $65.43 10+ $60.67 25+ $56.31 50+ $55.12 100+ $51.95	Restricted Item Minimum order of 5 items Multiples of 1 only Please enter a valid quantity Add	-	10ohm	25W	RHS Series	-	Panel Mount	Flatted	-	-	± 10%	-	Solder Lug	-	34.93mm	-	-

RES125E	64K5661 Data Sheet + RoHS	Rheostat, Wirewound, 125 ohm, 12.5 W, RES Series, Panel Mount, Round Shaft OHMITE You previously purchased this product. View in Order History	Each	5+ $70.48 10+ $67.39 25+ $60.01 50+ $56.26 100+ $54.39	Restricted Item Minimum order of 5 items Multiples of 1 only Please enter a valid quantity Add	-	125ohm	12.5W	RES Series	-	Panel Mount	Round Shaft	-	-	± 10%	-	Solder Lug	-	17.46mm	-	-

RES50R	01F3491 Data Sheet Data Sheet	Rheostat, 50 ohm, 12.5 W, RES Series, Panel Mount, Round Shaft OHMITE You previously purchased this product. View in Order History	Each	5+ $70.79 10+ $67.24 25+ $56.62 50+ $53.09 100+ $51.32	Restricted Item Minimum order of 5 items Multiples of 1 only Please enter a valid quantity Add	-	50ohm	12.5W	RES Series	-	Panel Mount	Round Shaft	-	-	± 10%	-	Solder Lug	-	17.46mm	-	-

RES100	01F3493 Data Sheet	Rheostat, Wirewound, 100 ohm, 12.5 W, RES Series, Panel Mount, Round Shaft OHMITE You previously purchased this product. View in Order History	Each	5+ $70.79 10+ $67.24 25+ $56.62 50+ $53.09 100+ $51.32	Restricted Item Minimum order of 5 items Multiples of 1 only Please enter a valid quantity Add	-	100ohm	12.5W	RES Series	-	Panel Mount	Round Shaft	-	-	± 10%	-	Solder Lug	-	17.46mm	-	-

RES25R	01F3489 Data Sheet	Rheostat, Wirewound, 25 ohm, 12.5 W, RES Series, Panel Mount, Round Shaft OHMITE You previously purchased this product. View in Order History	Each	5+ $70.79 10+ $67.24 25+ $56.62 50+ $53.09 100+ $51.32	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	-	-

RES250	01F3496 Data Sheet	Rheostat, Wirewound, 250 ohm, 12.5 W, RES Series, Panel Mount, Round Shaft OHMITE You previously purchased this product. View in Order History	Each	5+ $70.79 10+ $67.24 25+ $56.62 50+ $53.09 100+ $51.32	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	-	-

RES35R	01F3490 Data Sheet	Rheostat, 35 ohm, 12.5 W, RES Series, Panel Mount OHMITE You previously purchased this product. View in Order History	Each	5+ $70.79 10+ $67.24 25+ $56.62 50+ $53.09 100+ $51.32	Restricted Item Minimum order of 5 items Multiples of 1 only Please enter a valid quantity Add	-	35ohm	12.5W	RES Series	-	Panel Mount	-	-	-	± 10%	-	Solder Lug	-	17.46mm	-	-

RES500	01F3498 Data Sheet	Rheostat, Wirewound, 500 ohm, 12.5 W, RES Series, Panel Mount, Round Shaft OHMITE You previously purchased this product. View in Order History	Each	10+ $71.82 25+ $66.66 50+ $65.25 100+ $61.50	Restricted Item Minimum order of 10 items Multiples of 1 only Please enter a valid quantity Add	-	500ohm	12.5W	RES Series	-	Panel Mount	Round Shaft	-	-	± 10%	-	Solder Lug	-	17.46mm	-	-

RES8R0	01F3486 Data Sheet	Rheostat, Wirewound, 8 ohm, 12.5 W, RES Series, Panel Mount, Round Shaft OHMITE You previously purchased this product. View in Order History	Each	5+ $74.72 10+ $70.97 25+ $59.77 50+ $56.04 100+ $54.17	Restricted Item Minimum order of 5 items Multiples of 1 only Please enter a valid quantity Add	-	8ohm	12.5W	RES Series	-	Panel Mount	Round Shaft	-	-	± 10%	-	Solder Lug	-	17.46mm	-	-

RES15RE	64K5663 Data Sheet + RoHS	Rheostat, Wirewound, 15 ohm, 12.5 W, RES Series, Panel Mount, Round Shaft OHMITE You previously purchased this product. View in Order History	Each	5+ $75.02 10+ $71.27 25+ $60.01 50+ $56.26 100+ $54.39	Restricted Item Minimum order of 5 items Multiples of 1 only Please enter a valid quantity Add	-	15ohm	12.5W	RES Series	-	Panel Mount	Round Shaft	-	-	± 10%	-	Solder Lug	-	17.46mm	-	-

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	-	-

RES350E	64K5675 Data Sheet + RoHS	Rheostat, Wirewound, 350 ohm, 12.5 W, RES Series, Panel Mount, Round Shaft OHMITE You previously purchased this product. View in Order History	Each	5+ $76.00 10+ $70.48 25+ $65.41 50+ $64.03 100+ $60.34	Restricted Item Minimum order of 5 items Multiples of 1 only Please enter a valid quantity Add	-	350ohm	12.5W	RES Series	-	Panel Mount	Round Shaft	-	-	± 10%	-	Solder Lug	-	17.46mm	-	-

RES100E	64K5659 + RoHS	Rheostat, Wirewound, 100 ohm, 12.5 W, RES Series, Panel Mount, Round Shaft 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	-	100ohm	12.5W	RES Series	-	Panel Mount	Round Shaft	-	-	± 10%	-	Solder Lug	-	17.46mm	-	-

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	-	-

RES50RE	64K5678 Data Sheet + RoHS Date/Lot Code	Rheostat, Wirewound, 50 ohm, 12.5 W, RES Series, Panel Mount, Round Shaft OHMITE You previously purchased this product. View in Order History	Each	1+ $76.37 5+ $72.94 10+ $69.49 25+ $65.76 50+ $57.49	Restricted Item Minimum order of 1 items Multiples of 1 only Please enter a valid quantity Add	-	50ohm	12.5W	RES Series	-	Panel Mount	Round Shaft	-	-	± 10%	-	Solder Lug	-	17.46mm	-	-

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	-	-

RES175E	64K5665 Data Sheet + RoHS	Rheostat, Wirewound, 175 ohm, 12.5 W, RES Series, Panel Mount, Round Shaft OHMITE You previously purchased this product. View in Order History	Each	1+ $77.22	Restricted Item Minimum order of 5 items Multiples of 1 only Please enter a valid quantity Add	-	175ohm	12.5W	RES Series	-	Panel Mount	Round Shaft	-	-	± 10%	-	Solder Lug	-	17.46mm	-	-

RES5K0	01F3504 Data Sheet	Rheostat, Wirewound, 5 kohm, 12.5 W, RES Series, Panel Mount, Screwdriver Slot OHMITE You previously purchased this product. View in Order History	Each	5+ $77.44 10+ $73.56 25+ $61.94 50+ $58.08 100+ $56.14	Restricted Item Minimum order of 5 items Multiples of 1 only Please enter a valid quantity Add	-	5kohm	12.5W	RES Series	-	Panel Mount	Screwdriver Slot	-	-	± 10%	-	Solder Lug	-	17.46mm	-	-

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	-	-