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. 167-8618
Mfr. Part No.RT025AS2201KB
BrandVishay
SGD171.876
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. 795-4847
Mfr. Part No.RT025AS2201KB
BrandVishay
SGD180.17
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. 168-0124
Mfr. Part No.RT025AS4701KB
BrandVishay
SGD145.782
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. 788-7823
Mfr. Part No.RT025AS4701KB
BrandVishay
SGD204.77
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. 167-9917
Mfr. Part No.RT500AS1001KB
BrandVishay
SGD1,509.188
Each (In a Pack of 25)
units
1kΩ ±10% 500W 1 Panel Mount 10 mm 12mm Solder Lug 143 (Dia.) x 158mm - - 158mm +320°C -
RS Stock No. 788-7677
Mfr. Part No.RT500AS1001KB
BrandVishay
SGD1,922.25
Each
units
1kΩ ±10% 500W 1 Panel Mount 10 mm 12mm Solder Lug 143 (Dia.) x 158mm - - 158mm +320°C -
RS Stock No. 788-7712
Mfr. Part No.RT055AS4701KB
BrandVishay
SGD669.14
Each
units
4.7kΩ ±10% 55W 1 Panel Mount 6 mm 10.5mm Solder Lug 60 (Dia.) x 64mm - - 64mm +320°C -
RS Stock No. 788-7794
Mfr. Part No.RT025AS1000KB
BrandVishay
SGD181.24
Each
units
100Ω ±10% 25W 1 Panel Mount 6 mm 10.5mm Solder Lug 38 (Dia.) x 50mm - - 50mm +320°C -
RS Stock No. 788-7703
Mfr. Part No.RT055AS10R0KB
BrandVishay
SGD612.54
Each
units
10Ω ±10% 55W 1 Panel Mount 6 mm 10.5mm Solder Lug 60 (Dia.) x 64mm - - 64mm +320°C -
RS Stock No. 788-7835
Mfr. Part No.RT025AS47R0KB
BrandVishay
SGD163.57
Each
units
47Ω ±10% 25W 1 Panel Mount 6 mm 10.5mm Solder Lug 38 (Dia.) x 50mm - - 50mm +320°C -
RS Stock No. 168-0120
Mfr. Part No.RT025AS1500KB
BrandVishay
SGD147.64
Each (In a Pack of 25)
units
150Ω ±10% 25W 1 Panel Mount 6 mm 10.5mm Solder Lug 38 (Dia.) x 50mm - - 50mm +320°C -
RS Stock No. 167-9891
Mfr. Part No.RT055AS10R0KB
BrandVishay
SGD518.255
Each (In a Pack of 25)
units
10Ω ±10% 55W 1 Panel Mount 6 mm 10.5mm Solder Lug 60 (Dia.) x 64mm - - 64mm +320°C -
RS Stock No. 788-7807
Mfr. Part No.RT025AS1500KB
BrandVishay
SGD202.58
Each
units
150Ω ±10% 25W 1 Panel Mount 6 mm 10.5mm Solder Lug 38 (Dia.) x 50mm - - 50mm +320°C -
RS Stock No. 788-7832
Mfr. Part No.RT025AS4700KB
BrandVishay
SGD201.63
Each
units
470Ω ±10% 25W 1 Panel Mount 6 mm 10.5mm Solder Lug 38 (Dia.) x 50mm - - 50mm +320°C -
RS Stock No. 167-9820
Mfr. Part No.RT025AS47R0KB
BrandVishay
SGD146.064
Each (In a Pack of 25)
units
47Ω ±10% 25W 1 Panel Mount 6 mm 10.5mm Solder Lug 38 (Dia.) x 50mm - - 50mm +320°C -
RS Stock No. 167-9889
Mfr. Part No.RT055AS4701KB
BrandVishay
SGD413.34
Each (In a Pack of 25)
units
4.7kΩ ±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
SGD143.882
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. 168-0117
Mfr. Part No.RT025AS1000KB
BrandVishay
SGD132.374
Each (In a Pack of 25)
units
100Ω ±10% 25W 1 Panel Mount 6 mm 10.5mm Solder Lug 38 (Dia.) x 50mm - - 50mm +320°C -
RS Stock No. 168-0115
Mfr. Part No.RT012AS2201KB
BrandVishay
SGD231.966
Each (In a Pack of 25)
units
2.2kΩ ±10% 12W 1 Panel Mount 3 mm 6.5mm Solder Lug 22.5 (Dia.) x 40mm - - 40mm +320°C -
RS Stock No. 788-7801
Mfr. Part No.RT025AS15R0KB
BrandVishay
SGD230.39
Each
units
15Ω ±10% 25W 1 Panel Mount 6 mm 10.5mm Solder Lug 38 (Dia.) x 50mm - - 50mm +320°C -