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. 891-5326
Mfr. Part No.RES1K0E
R 768.30
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. 891-5398
Mfr. Part No.RHS1K0E
R 517.93
Each
units
1kΩ ±10% 25W 300 ° Panel Mount 6.35 mm - Solder Lug 39.62 (Dia.) x 34.93mm - - 34.93mm - Linear Shaft
RS stock no. 891-5335
Mfr. Part No.RES25RE
R 748.46
Each
units
25Ω ±10% 12.5W 300 ° Panel Mount 3.18 mm - Solder Lug 22.23 (Dia.) x 17.46mm - - 17.46mm - Linear Shaft
RS stock no. 144-5526
Mfr. Part No.RHS1K0E
R 691.72
Each
units
1kΩ 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. 144-5524
Mfr. Part No.RHS10KE
R 784.28
Each
units
10kΩ 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. 891-5379
Mfr. Part No.RHS10KE
R 789.51
Each
units
10kΩ ±10% 25W 300 ° Panel Mount 6.35 mm - Solder Lug 39.62 (Dia.) x 34.93mm - - 34.93mm - Linear Shaft
RS stock no. 891-5464
Mfr. Part No.RJS150E
BrandOhmite
R 915.13
Each
units
150Ω ±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
R 919.696
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
R 1,421.49
Each
units
1kΩ ±10% 25W 1 Panel Mount 6 mm 10.5mm Solder Lug 38 (Dia.) x 50mm - - 50mm +320°C -
RS stock no. 891-5411
Mfr. Part No.RHS2K5E
R 905.48
Each
units
2.5kΩ ±10% 25W 300 ° Panel Mount 6.35 mm - Solder Lug 39.62 (Dia.) x 34.93mm - - 34.93mm - Linear Shaft
RS stock no. 891-5474
Mfr. Part No.RJS225E
BrandOhmite
R 576.45
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. 891-5301
Mfr. Part No.RES10KE
R 798.05
Each
units
10kΩ ±10% 12.5W 300 ° Panel Mount 3.18 mm - Solder Lug 22.23 (Dia.) x 17.46mm - - 17.46mm - Linear Shaft
RS stock no. 891-5597
Mfr. Part No.RLS25RE
BrandOhmite
R 1,472.10
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. 891-5610
Mfr. Part No.RNS10RE
BrandOhmite
R 3,745.77
Each
units
10Ω ±10% 300W 320 ° Panel Mount 9.53 mm - Solder Lug 152.4 (Dia.) x 60.33mm - - 60.33mm - Linear Shaft
RS stock no. 167-8618
Mfr. Part No.RT025AS2201KB
BrandVishay
R 884.309
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
R 1,120.31
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. 891-5382
Mfr. Part No.RHS15KE
R 975.80
Each
units
15kΩ ±10% 25W 300 ° Panel Mount 6.35 mm - Solder Lug 39.62 (Dia.) x 34.93mm - - 34.93mm - Linear Shaft
RS stock no. 891-5468
Mfr. Part No.RJS16RE
BrandOhmite
R 601.09
Each
units
16Ω ±10% 50W 300 ° Panel Mount 6.35 mm - Solder Lug 58.67 (Dia.) x 34.93mm - - 34.93mm - Linear Shaft
RS stock no. 891-5405
Mfr. Part No.RHS250E
R 484.78
Each
units
250Ω ±10% 25W 300 ° Panel Mount 6.35 mm - Solder Lug 39.62 (Dia.) x 34.93mm - - 34.93mm - Linear Shaft
RS stock no. 891-5395
Mfr. Part No.RHS1R0E
R 541.04
Each
units
±10% 25W 300 ° Panel Mount 6.35 mm - Solder Lug 39.62 (Dia.) x 34.93mm - - 34.93mm - Linear Shaft