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. 167-9894
Mfr. Part No.RT100AS22R0KB
BrandVishay
TWD7,578.60
Each (In a Pack of 25)
units
22Ω ±10% 100W 1 Panel Mount 6 mm 10.5mm Solder Lug 85 (Dia.) x 81mm - - 81mm +320°C -
RS Stock No. 788-7674
Mfr. Part No.RT100AS1002KB
BrandVishay
TWD9,220.00
Each
units
10kΩ ±10% 100W 1 Panel Mount 6 mm 10.5mm Solder Lug 85 (Dia.) x 81mm - - 81mm +320°C -
RS Stock No. 168-0124
Mfr. Part No.RT025AS4701KB
BrandVishay
TWD2,740.70
Each (In a Pack of 25)
units
4.7kΩ ±10% 25W 1 Panel Mount 6 mm 10.5mm Solder Lug 38 (Dia.) x 50mm - - 50mm +320°C -
RS Stock No. 788-7693
Mfr. Part No.RT055AS1002KB
BrandVishay
TWD12,852.00
Each
units
10kΩ ±10% 55W 1 Panel Mount 6 mm 10.5mm Solder Lug 60 (Dia.) x 64mm - - 64mm +320°C -
RS Stock No. 168-0126
Mfr. Part No.RT025AS2R20KB
BrandVishay
TWD5,115.40
Each (In a Pack of 25)
units
2.2Ω ±10% 25W 1 Panel Mount 6 mm 10.5mm Solder Lug 38 (Dia.) x 50mm - - 50mm +320°C -
RS Stock No. 788-7801
Mfr. Part No.RT025AS15R0KB
BrandVishay
TWD4,932.00
Each
units
15Ω ±10% 25W 1 Panel Mount 6 mm 10.5mm Solder Lug 38 (Dia.) x 50mm - - 50mm +320°C -
RS Stock No. 167-8618
Mfr. Part No.RT025AS2201KB
BrandVishay
TWD3,751.10
Each (In a Pack of 25)
units
2.2kΩ ±10% 25W 1 Panel Mount 6 mm 10.5mm Solder Lug 38 Dia.x 50mm 50mm - 38 (Dia.)mm +320°C -
RS Stock No. 788-7677
Mfr. Part No.RT500AS1001KB
BrandVishay
TWD41,914.00
Each
units
1kΩ ±10% 500W 1 Panel Mount 10 mm 12mm Solder Lug 143 (Dia.) x 158mm - - 158mm +320°C -
RS Stock No. 168-0122
Mfr. Part No.RT025AS1501KB
BrandVishay
TWD4,677.60
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. 168-0125
Mfr. Part No.RT025AS22R0KB
BrandVishay
TWD3,447.50
Each (In a Pack of 25)
units
22Ω ±10% 25W 1 Panel Mount 6 mm 10.5mm Solder Lug 38 (Dia.) x 50mm - - 50mm +320°C -
RS Stock No. 795-4847
Mfr. Part No.RT025AS2201KB
BrandVishay
TWD3,932.00
Each
units
2.2kΩ ±10% 25W 1 Panel Mount 6 mm 10.5mm Solder Lug 38 Dia.x 50mm 50mm - 38 (Dia.)mm +320°C -
RS Stock No. 788-7700
Mfr. Part No.RT055AS2201KB
BrandVishay
TWD11,433.00
Each
units
2.2kΩ ±10% 55W 1 Panel Mount 6 mm 10.5mm Solder Lug 60 (Dia.) x 64mm - - 64mm +320°C -
RS Stock No. 168-0127
Mfr. Part No.RT025AS4700KB
BrandVishay
TWD2,906.70
Each (In a Pack of 25)
units
470Ω ±10% 25W 1 Panel Mount 6 mm 10.5mm Solder Lug 38 (Dia.) x 50mm - - 50mm +320°C -
RS Stock No. 788-7683
Mfr. Part No.RT100AS22R0KB
BrandVishay
TWD11,038.00
Each
units
22Ω ±10% 100W 1 Panel Mount 6 mm 10.5mm Solder Lug 85 (Dia.) x 81mm - - 81mm +320°C -
RS Stock No. 788-7703
Mfr. Part No.RT055AS10R0KB
BrandVishay
TWD13,033.00
Each
units
10Ω ±10% 55W 1 Panel Mount 6 mm 10.5mm Solder Lug 60 (Dia.) x 64mm - - 64mm +320°C -
RS Stock No. 167-8663
Mfr. Part No.RT055AS1001KB
BrandVishay
TWD9,921.20
Each (In a Pack of 25)
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. 168-0066
Mfr. Part No.RT012AS1000KB
BrandVishay
TWD4,274.40
Each (In a Pack of 25)
units
100Ω ±10% 12W 1 Panel Mount 3 mm 6.5mm Solder Lug 22.5 (Dia.) x 40mm - - 40mm +320°C -
RS Stock No. 167-9890
Mfr. Part No.RT055AS22R0KB
BrandVishay
TWD10,113.80
Each (In a Pack of 25)
units
22Ω ±10% 55W 1 Panel Mount 6 mm 10.5mm Solder Lug 60 (Dia.) x 64mm - - 64mm +320°C -
RS Stock No. 788-7706
Mfr. Part No.RT055AS22R0KB
BrandVishay
TWD11,433.00
Each
units
22Ω ±10% 55W 1 Panel Mount 6 mm 10.5mm Solder Lug 60 (Dia.) x 64mm - - 64mm +320°C -
RS Stock No. 167-9888
Mfr. Part No.RT055AS1000KB
BrandVishay
TWD9,921.20
Each (In a Pack of 25)
units
100Ω ±10% 55W 1 Panel Mount 6 mm 10.5mm Solder Lug 60 (Dia.) x 64mm - - 64mm +320°C -