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. 168-0122
Mfr. Part No.RT025AS1501KB
BrandVishay
MYR392.60
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. 893-5197
Mfr. Part No.RLS1K8
BrandOhmite
MYR732.776
Each (In a Pack of 5)
units
1.8kΩ ±10% 150W 300 ° Panel Mount 6.35 mm - Solder Lug 101.6 (Dia.) x 50.8mm - - 50.8mm - Linear Shaft
RS Stock No. 893-5724
Mfr. Part No.RHL500
BrandOhmite
MYR287.748
Each (In a Pack of 5)
units
500Ω ±10% 25W 300 ° Panel Mount 6.35 mm - Solder Lug 39.62 (Dia.) x 34.93mm - - 34.93mm - Linear Shaft
RS Stock No. 891-5509
Mfr. Part No.RJS500E
MYR285.07
Each
units
500Ω ±10% 50W 300 ° Panel Mount 6.35 mm - Solder Lug 58.67 (Dia.) x 34.93mm - - 34.93mm - Linear Shaft
RS Stock No. 144-5525
Mfr. Part No.RHS10RE
MYR278.31
Each
units
10Ω 10% 25W 300 ° Panel Mount 6.35 mm - Solder 39.62 (Dia.) x 34.93mm 39.62 (Dia.)mm - 34.93mm - Linear Shaft
RS Stock No. 891-5486
Mfr. Part No.RJS2K5E
BrandOhmite
MYR326.79
Each
units
2.5kΩ ±10% 50W 300 ° Panel Mount 6.35 mm - Solder Lug 58.67 (Dia.) x 34.93mm - - 34.93mm - Linear Shaft
RS Stock No. 167-8663
Mfr. Part No.RT055AS1001KB
BrandVishay
MYR1,072.914
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. 2509192647
Mfr. Part No.RKS300E
BrandOhmite
MYR329.67
Each
units
- - - - - - - - - - - - - -
RS Stock No. 2509192940
Mfr. Part No.RNS2R0E
BrandOhmite
MYR757.46
Each
units
- - - - - - - - - - - - - -
RS Stock No. 2508305924
Mfr. Part No.232P19
BrandOhmite
MYR264.54
Each
units
- - - - - - - - - - - - - -
RS Stock No. 2509031132
Mfr. Part No.232P21
BrandOhmite
MYR213.30
Each
units
- - - - - - - - - - - - - -
Related Products
The Vishay RT Series of linear wire wound ...
Description:
The Vishay RT Series of linear wire wound rheostats are designed for use in professional and industrial equipment. Particularly in equipment where transients, repeated overloads, impacts and vibrations characterise everyday operation.Suggested accessories for these rheostats include control buttons and displays. ...