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. 144-5536
Mfr. Part No.RJS6R0E
kr 742,86
Each
Units
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. 893-5187
Mfr. Part No.RGS7R5E
BrandOhmite
kr 881,806
Each (In a Pack of 5)
Units
7.5Ω ±10% 75W 300 ° Panel Mount 6.35 mm - Solder Lug 69.25 (Dia.) x 44.45mm - - 44.45mm - Linear Shaft
RS Stock No. 788-7706
Mfr. Part No.RT055AS22R0KB
BrandVishay
kr 1 764,59
Each
Units
22Ω ±10% 55W 1 Panel Mount 6 mm 10.5mm Solder Lug 60 (Dia.) x 64mm - - 64mm +320°C -
RS Stock No. 891-5506
Mfr. Part No.RJS4R0E
BrandOhmite
kr 742,86
Each
Units
±10% 50W 300 ° Panel Mount 6.35 mm - Solder Lug 58.67 (Dia.) x 34.93mm - - 34.93mm - Linear Shaft
RS Stock No. 168-0121
Mfr. Part No.RT025AS1001KB
BrandVishay
kr 510,807
Each (In a Pack of 25)
Units
1kΩ ±10% 25W 1 Panel Mount 6 mm 10.5mm Solder Lug 38 (Dia.) x 50mm - - 50mm +320°C -
RS Stock No. 788-7810
Mfr. Part No.RT025AS1001KB
BrandVishay
kr 671,58
Each
Units
1kΩ ±10% 25W 1 Panel Mount 6 mm 10.5mm Solder Lug 38 (Dia.) x 50mm - - 50mm +320°C -
RS Stock No. 891-5310
Mfr. Part No.RES10RE
kr 449,95
Each
Units
10Ω ±10% 12.5W 300 ° Panel Mount 3.18 mm - Solder Lug 22.23 (Dia.) x 17.46mm - - 17.46mm - Linear Shaft
RS Stock No. 167-9890
Mfr. Part No.RT055AS22R0KB
BrandVishay
kr 1 385,152
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. 891-5525
Mfr. Part No.RJS8R0E
BrandOhmite
kr 649,15
Each
Units
±10% 50W 300 ° Panel Mount 6.35 mm - Solder Lug 58.67 (Dia.) x 34.93mm - - 34.93mm - Linear Shaft
RS Stock No. 891-5590
Mfr. Part No.RLS1K25E
BrandOhmite
kr 1 430,60
Each
Units
1.2kΩ ±10% 150W 300 ° Panel Mount 6.35 mm - Solder Lug 101.6 (Dia.) x 50.8mm - - 50.8mm - Linear Shaft
RS Stock No. 891-5593
Mfr. Part No.RLS250E
BrandOhmite
kr 1 331,39
Each
Units
250Ω ±10% 150W 300 ° Panel Mount 6.35 mm - Solder Lug 101.6 (Dia.) x 50.8mm - - 50.8mm - Linear Shaft
RS Stock No. 891-5626
Mfr. Part No.RNS200E
BrandOhmite
kr 2 319,72
Each
Units
200Ω ±10% 300W 320 ° Panel Mount 9.53 mm - Solder Lug 152.4 (Dia.) x 60.33mm - - 60.33mm - Linear Shaft
RS Stock No. 891-5597
Mfr. Part No.RLS25RE
BrandOhmite
kr 1 016,14
Each
Units
25Ω ±10% 150W 300 ° Panel Mount 6.35 mm - Solder Lug 101.6 (Dia.) x 50.8mm - - 50.8mm - Linear Shaft
RS Stock No. 891-5629
Mfr. Part No.RNS1K5E
BrandOhmite
kr 2 456,11
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. 891-5600
Mfr. Part No.RLS500E
BrandOhmite
kr 1 331,39
Each
Units
500Ω ±10% 150W 300 ° Panel Mount 6.35 mm - Solder Lug 101.6 (Dia.) x 50.8mm - - 50.8mm - Linear Shaft
RS Stock No. 891-5632
Mfr. Part No.RNS50RE
BrandOhmite
kr 2 319,72
Each
Units
50Ω ±10% 300W 320 ° Panel Mount 9.53 mm - Solder Lug 152.4 (Dia.) x 60.33mm - - 60.33mm - Linear Shaft
RS Stock No. 788-7703
Mfr. Part No.RT055AS10R0KB
BrandVishay
kr 1 067,69
Each
Units
10Ω ±10% 55W 1 Panel Mount 6 mm 10.5mm Solder Lug 60 (Dia.) x 64mm - - 64mm +320°C -
RS Stock No. 795-4838
Mfr. Part No.RT055AS1001KB
BrandVishay
kr 1 684,23
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. 891-5604
Mfr. Part No.RLS50RE
BrandOhmite
kr 1 331,39
Each
Units
50Ω ±10% 150W 300 ° Panel Mount 6.35 mm - Solder Lug 101.6 (Dia.) x 50.8mm - - 50.8mm - Linear Shaft
RS Stock No. 891-5503
Mfr. Part No.RJS50KE
BrandOhmite
kr 813,25
Each
Units
50kΩ ±10% 50W 300 ° Panel Mount 6.35 mm - Solder Lug 58.67 (Dia.) x 34.93mm - - 34.93mm - Linear Shaft