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 Operate
Rheostats 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 Types
Several 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. 891-5515
Mfr. Part No.RJS5K0E
BrandOhmite
TWD2,662.00
Each
units
5kΩ ±10% 50W 300 ° Panel Mount 6.35 mm - Solder Lug 58.67 (Dia.) x 34.93mm - - 34.93mm - Linear Shaft
RS Stock No. 891-5492
Mfr. Part No.RJS35RE
BrandOhmite
TWD2,574.00
Each
units
35Ω ±10% 50W 300 ° Panel Mount 6.35 mm - Solder Lug 58.67 (Dia.) x 34.93mm - - 34.93mm - Linear Shaft
RS Stock No. 891-5474
Mfr. Part No.RJS225E
BrandOhmite
TWD2,062.00
Each
units
225Ω ±10% 50W 300 ° Panel Mount 6.35 mm - Solder Lug 58.67 (Dia.) x 34.93mm - - 34.93mm - Linear Shaft
RS Stock No. 891-5581
Mfr. Part No.RLS15RE
TWD4,249.00
Each
units
15Ω ±10% 150W 300 ° Panel Mount 6.35 mm - Solder Lug 101.6 (Dia.) x 50.8mm - - 50.8mm - Linear Shaft
RS Stock No. 893-5440
Mfr. Part No.RPS200
BrandOhmite
TWD9,601.80
Each (In a Pack of 5)
units
200Ω ±10% 225W 310 ° Panel Mount 9.53 mm - Solder Lug 127 (Dia.) x 53.98mm - - 53.98mm - Linear Shaft
RS Stock No. 893-1088
Mfr. Part No.RES200E
BrandOhmite
TWD1,279.20
Each (In a Pack of 5)
units
200Ω ±10% 12.5W 300 ° Panel Mount 3.18 mm - Solder Lug 22.23 (Dia.) x 17.46mm - - 17.46mm - Linear Shaft
RS Stock No. 893-3419
Mfr. Part No.RNS400E
BrandOhmite
TWD7,097.00
Each (In a Pack of 5)
units
400Ω ±10% 300W 320 ° Panel Mount 9.53 mm - Solder Lug 152.4 (Dia.) x 60.33mm - - 60.33mm - Linear Shaft
RS Stock No. 788-7674
Mfr. Part No.RT100AS1002KB
BrandVishay
TWD9,348.00
Each
units
10kΩ ±10% 100W 1 Panel Mount 6 mm 10.5mm Solder Lug 85 (Dia.) x 81mm - - 81mm +320°C -
RS Stock No. 827-6404
Mfr. Part No.VRH320 10K K
BrandArcol
TWD6,193.00
Each
units
10kΩ ±10% - - Surface Mount - - Solder Lug 446 x 93 x 150mm 93mm 150mm 446mm - Slide
RS Stock No. 891-5408
Mfr. Part No.RHS25KE
TWD2,624.00
Each
units
25kΩ ±10% 25W 300 ° Panel Mount 6.35 mm - Solder Lug 39.62 (Dia.) x 34.93mm - - 34.93mm - Linear Shaft
RS Stock No. 891-5326
Mfr. Part No.RES1K0E
TWD1,894.00
Each
units
1kΩ ±10% 12.5W 300 ° Panel Mount 3.18 mm - Solder Lug 22.23 (Dia.) x 17.46mm - - 17.46mm - Linear Shaft
RS Stock No. 788-7706
Mfr. Part No.RT055AS22R0KB
BrandVishay
TWD9,437.00
Each
units
22Ω ±10% 55W 1 Panel Mount 6 mm 10.5mm Solder Lug 60 (Dia.) x 64mm - - 64mm +320°C -
RS Stock No. 893-3472
Mfr. Part No.RNS5R0E
BrandOhmite
TWD8,381.00
Each
units
±10% 300W 320 ° Panel Mount 9.53 mm - Solder Lug 152.4 (Dia.) x 60.33mm - - 60.33mm - Linear Shaft
RS Stock No. 144-5535
Mfr. Part No.RJS50RE
TWD3,026.00
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. 891-5376
Mfr. Part No.RHS100E
TWD1,724.00
Each
units
100Ω ±10% 25W 300 ° Panel Mount 6.35 mm - Solder Lug 39.62 (Dia.) x 34.93mm - - 34.93mm - Linear Shaft
RS Stock No. 168-0122
Mfr. Part No.RT025AS1501KB
BrandVishay
TWD3,862.20
Each (In a Pack of 25)
units
1.5kΩ ±10% 25W 1 Panel Mount 6 mm 10.5mm Solder Lug 38 (Dia.) x 50mm - - 50mm +320°C -
RS Stock No. 891-5629
Mfr. Part No.RNS1K5E
BrandOhmite
TWD8,541.00
Each
units
1.5kΩ ±10% 300W 320 ° Panel Mount 9.53 mm - Solder Lug 152.4 (Dia.) x 60.33mm - - 60.33mm - Linear Shaft
RS Stock No. 788-7817
Mfr. Part No.RT025AS2200KB
BrandVishay
TWD3,572.00
Each
units
220Ω ±10% 25W 1 Panel Mount 6 mm 10.5mm Solder Lug 38 (Dia.) x 50mm - - 50mm +320°C -
RS Stock No. 892-2510
Mfr. Part No.5E-100
BrandOhmite
TWD24.40
Each (In a Pack of 50)
units
- - 8 W, 12 W - - - - - - - - - - -
RS Stock No. 892-2416
Mfr. Part No.RRS125E
BrandOhmite
TWD15,031.00
Each
units
125Ω ±10% 500W 325 ° Panel Mount 9.53 mm - Solder Lug 203.2 (Dia.) x 53.98mm - - 53.98mm - Linear Shaft