Rheostats

A rheostat is a variable resistor which is used to control current within an electrical circuit. They are able to vary the resistance in a circuit without interruption. Rheostats are very similar in construction to potentiometers.How Rheostats OperateRheostats use two connections, even when 3 terminals are present, the first connection is made to one end of the resistive element and the other connection to the wiper (sliding contact). Resistive wire is wound around an insulating ceramic core, as the wiper slides over the windings the resistance, and therefore current, produced is altered.Rheostat TypesSeveral types of rheostats exist, with varying functions and applications. Rotary type – Mostly used in power control applications. Rotary rheostats feature a turnable shaft that adjusts the resistance. They are used to control multiple applications in parallel or to increase the power rating or adjusting range. Slide type – Slide rheostats are often used for education and in laboratory environments. Linear or slide types are constructed of resistive wire wound on an insulating cylinder, a sliding contact moves along the winding to increase or decrease the resistance.

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Description Price Maximum Resistance Tolerance Power Rating Number of Turns Mounting Type Shaft Diameter Mounting Hole Diameter Termination Style Dimensions Depth Height Length Maximum Operating Temperature Actuator Type
RS Stock No. 891-5442
Mfr. Part No.RHS750E
TWD2,140.00
Each
units
750Ω ±10% 25W 300 ° Panel Mount 6.35 mm - Solder Lug 39.62 (Dia.) x 34.93mm - - 34.93mm - Linear Shaft
RS Stock No. 827-6397
Mfr. Part No.VRH320 33R K
BrandArcol
TWD5,925.00
Each
units
33Ω - - - Surface Mount - - Solder Lug 446 x 93 x 150mm 93mm 150mm 446mm - Slide
RS Stock No. 891-5395
Mfr. Part No.RHS1R0E
TWD2,243.00
Each
units
±10% 25W 300 ° Panel Mount 6.35 mm - Solder Lug 39.62 (Dia.) x 34.93mm - - 34.93mm - Linear Shaft
RS Stock No. 167-9907
Mfr. Part No.RT500AS1000KB
BrandVishay
TWD58,943.80
Each (In a Pack of 25)
units
100Ω ±10% 500W 1 Panel Mount 10 mm 12mm Solder Lug 143 (Dia.) x 158mm - - 158mm +320°C -
RS Stock No. 788-7696
Mfr. Part No.RT500AS1000KB
BrandVishay
TWD33,280.00
Each
units
100Ω ±10% 500W 1 Panel Mount 10 mm 12mm Solder Lug 143 (Dia.) x 158mm - - 158mm +320°C -
RS Stock No. 893-5207
Mfr. Part No.RLS2R0E
BrandOhmite
TWD6,273.20
Each (In a Pack of 5)
units
±10% 150W 300 ° Panel Mount 6.35 mm - Solder Lug 101.6 (Dia.) x 50.8mm - - 50.8mm - Linear Shaft
RS Stock No. 891-5499
Mfr. Part No.RJS300E
BrandOhmite
TWD2,552.00
Each
units
300Ω ±10% 50W 300 ° Panel Mount 6.35 mm - Solder Lug 58.67 (Dia.) x 34.93mm - - 34.93mm - Linear Shaft
RS Stock No. 892-2447
Mfr. Part No.RRS50RE
BrandOhmite
TWD15,506.00
Each
units
50Ω ±10% 500W 325 ° Panel Mount 9.53 mm - Solder Lug 203.2 (Dia.) x 53.98mm - - 53.98mm - Linear Shaft
RS Stock No. 788-7817
Mfr. Part No.RT025AS2200KB
BrandVishay
TWD2,853.00
Each
units
220Ω ±10% 25W 1 Panel Mount 6 mm 10.5mm Solder Lug 38 (Dia.) x 50mm - - 50mm +320°C -
RS Stock No. 891-5345
Mfr. Part No.RES3R0E
TWD1,943.00
Each
units
±10% 12.5W 300 ° Panel Mount 3.18 mm - Solder Lug 22.23 (Dia.) x 17.46mm - - 17.46mm - Linear Shaft
RS Stock No. 144-5535
Mfr. Part No.RJS50RE
TWD2,655.00
Each
units
50Ω 10% 50W 300 ° Panel Mount 6.35 mm - Solder 58.67 (Dia.) x 34.93mm 58.67 (Dia.)mm - 34.93mm - Linear Shaft
RS Stock No. 892-2431
Mfr. Part No.RRS25RE
BrandOhmite
TWD15,506.00
Each
units
25Ω ±10% 500W 325 ° Panel Mount 9.53 mm - Solder Lug 203.2 (Dia.) x 53.98mm - - 53.98mm - Linear Shaft
RS Stock No. 891-5503
Mfr. Part No.RJS50KE
BrandOhmite
TWD3,324.00
Each
units
50kΩ ±10% 50W 300 ° Panel Mount 6.35 mm - Solder Lug 58.67 (Dia.) x 34.93mm - - 34.93mm - Linear Shaft
RS Stock No. 891-5483
Mfr. Part No.RJS22RE
BrandOhmite
TWD2,529.00
Each
units
22Ω ±10% 50W 300 ° Panel Mount 6.35 mm - Solder Lug 58.67 (Dia.) x 34.93mm - - 34.93mm - Linear Shaft
RS Stock No. 788-7668
Mfr. Part No.RT012AS1000KB
BrandVishay
TWD5,031.00
Each
units
100Ω ±10% 12W 1 Panel Mount 3 mm 6.5mm Solder Lug 22.5 (Dia.) x 40mm - - 40mm +320°C -
RS Stock No. 893-5727
Mfr. Part No.RHL5K0
BrandOhmite
TWD2,564.20
Each (In a Pack of 5)
units
5kΩ ±10% 25W 300 ° Panel Mount 6.35 mm - Solder Lug 39.62 (Dia.) x 34.93mm - - 34.93mm - Linear Shaft
RS Stock No. 167-9905
Mfr. Part No.RT230AS1000KB
BrandVishay
TWD25,877.10
Each (In a Pack of 25)
units
100Ω ±10% 250W 1 Panel Mount 10 mm 12mm Solder Lug 143 (Dia.) x 125mm - - 125mm +320°C -
RS Stock No. 795-4838
Mfr. Part No.RT055AS1001KB
BrandVishay
TWD9,868.00
Each
units
1kΩ ±10% 55W 1 Panel Mount 6 mm 10.5mm Solder Lug 60 (Dia.) x 64mm 64mm - 60 (Dia.)mm +320°C -
RS Stock No. 788-7823
Mfr. Part No.RT025AS4701KB
BrandVishay
TWD2,853.00
Each
units
4.7kΩ ±10% 25W 1 Panel Mount 6 mm 10.5mm Solder Lug 38 (Dia.) x 50mm - - 50mm +320°C -
RS Stock No. 891-5587
Mfr. Part No.RLS150E
BrandOhmite
TWD5,443.00
Each
units
150Ω ±10% 150W 300 ° Panel Mount 6.35 mm - Solder Lug 101.6 (Dia.) x 50.8mm - - 50.8mm - Linear Shaft