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. 891-5458
Mfr. Part No.RJS10KE
BrandOhmite
€62.36
Each
units
10kΩ ±10% 50W 300 ° Panel Mount 6.35 mm - Solder Lug 58.67 (Dia.) x 34.93mm - - 34.93mm - Linear Shaft
RS Stock No. 891-5515
Mfr. Part No.RJS5K0E
BrandOhmite
€64.41
Each
units
5kΩ ±10% 50W 300 ° Panel Mount 6.35 mm - Solder Lug 58.67 (Dia.) x 34.93mm - - 34.93mm - Linear Shaft
RS Stock No. 891-5486
Mfr. Part No.RJS2K5E
BrandOhmite
€62.36
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. 893-5406
Mfr. Part No.RHL10K
BrandOhmite
€62.126
Each (In a Pack of 5)
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. 893-4279
Mfr. Part No.RHL5K0E
BrandOhmite
€59.83
Each
units
5kΩ ±10% 25W 300 ° Panel Mount 6.35 mm - Solder Lug 39.62 (Dia.) x 34.93mm - - 34.93mm - Linear Shaft
RS Stock No. 891-5626
Mfr. Part No.RNS200E
BrandOhmite
€229.71
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. 892-2507
Mfr. Part No.18E-100
BrandOhmite
€0.963
Each (In a Pack of 50)
units
- - 175 W, 225 W - - - - - - - - - - -
RS Stock No. 891-5584
Mfr. Part No.RLS10RE
BrandOhmite
€131.85
Each
units
10Ω ±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
€80.54
Each
units
50kΩ ±10% 50W 300 ° Panel Mount 6.35 mm - Solder Lug 58.67 (Dia.) x 34.93mm - - 34.93mm - Linear Shaft
RS Stock No. 893-5272
Mfr. Part No.RRS3R0
BrandOhmite
€337.16
Each (In a Pack of 5)
units
±10% 500W 325 ° Panel Mount 9.53 mm - Solder Lug 203.2 (Dia.) x 53.98mm - - 53.98mm - Linear Shaft
RS Stock No. 891-5569
Mfr. Part No.RKS5R0E
BrandOhmite
€123.63
Each
units
±10% 100W 300 ° Panel Mount 6.35 mm - Solder Lug 79.38 (Dia.) x 44.45mm - - 44.45mm - Linear Shaft
RS Stock No. 892-8394
Mfr. Part No.RNS2K5E
BrandOhmite
€223.07
Each
units
2.5Ω ±10% 300W 320 ° Panel Mount 9.53 mm - Solder Lug 152.4 (Dia.) x 60.33mm - - 60.33mm - Linear Shaft
RS Stock No. 891-5571
Mfr. Part No.RLS100E
BrandOhmite
€125.57
Each
units
100Ω ±10% 150W 300 ° Panel Mount 6.35 mm - Solder Lug 101.6 (Dia.) x 50.8mm - - 50.8mm - Linear Shaft
RS Stock No. 892-8085
Mfr. Part No.RUS100E
BrandOhmite
€855.73
Each
units
100Ω ±10% 1kW 335 ° Panel Mount 9.53 mm - Solder Lug 304.8 (Dia.) x 76.2mm - - 76.2mm - Linear Shaft
RS Stock No. 893-4709
Mfr. Part No.RKS75RE
BrandOhmite
€87.66
Each (In a Pack of 5)
units
75Ω ±10% 100W 300 ° Panel Mount 6.35 mm - Solder Lug 79.38 (Dia.) x 44.45mm - - 44.45mm - Linear Shaft
RS Stock No. 892-2510
Mfr. Part No.5E-100
BrandOhmite
€0.642
Each (In a Pack of 50)
units
- - 8 W, 12 W - - - - - - - - - - -
RS Stock No. 891-5525
Mfr. Part No.RJS8R0E
BrandOhmite
€64.29
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. 893-5392
Mfr. Part No.RKSR50E
BrandOhmite
€121.46
Each (In a Pack of 5)
units
500mΩ ±10% 100W 300 ° Panel Mount 6.35 mm - Solder Lug 79.38 (Dia.) x 44.45mm - - 44.45mm - Linear Shaft
RS Stock No. 892-2416
Mfr. Part No.RRS125E
BrandOhmite
€375.63
Each
units
125Ω ±10% 500W 325 ° Panel Mount 9.53 mm - Solder Lug 203.2 (Dia.) x 53.98mm - - 53.98mm - Linear Shaft
RS Stock No. 891-5474
Mfr. Part No.RJS225E
BrandOhmite
€46.41
Each
units
225Ω ±10% 50W 300 ° Panel Mount 6.35 mm - Solder Lug 58.67 (Dia.) x 34.93mm - - 34.93mm - Linear Shaft