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. 891-5613
Mfr. Part No.RLS7R5E
BrandOhmite
PHP6,176.654
Each (In a Pack of 5)
units
7.5Ω ±10% 150W 300 ° Panel Mount 6.35 mm - Solder Lug 101.6 (Dia.) x 50.8mm - - 50.8mm - Linear Shaft
RS Stock No. 891-5537
Mfr. Part No.RKS100E
BrandOhmite
PHP5,180.08
Each
units
100Ω ±10% 100W 300 ° Panel Mount 6.35 mm - Solder Lug 79.38 (Dia.) x 44.45mm - - 44.45mm - Linear Shaft
RS Stock No. 891-5486
Mfr. Part No.RJS2K5E
BrandOhmite
PHP3,622.82
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. 892-2510
Mfr. Part No.5E-100
BrandOhmite
PHP29.83
Each (In a Pack of 50)
units
- - 8 W, 12 W - - - - - - - - - - -
RS Stock No. 891-5593
Mfr. Part No.RLS250E
BrandOhmite
PHP6,783.80
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. 891-5452
Mfr. Part No.RJS125E
BrandOhmite
PHP3,444.58
Each
units
125Ω ±10% 50W 300 ° Panel Mount 6.35 mm - Solder Lug 58.67 (Dia.) x 34.93mm - - 34.93mm - Linear Shaft
RS Stock No. 892-2422
Mfr. Part No.RRS250E
BrandOhmite
PHP24,506.48
Each
units
250Ω ±10% 500W 325 ° Panel Mount 9.53 mm - Solder Lug 203.2 (Dia.) x 53.98mm - - 53.98mm - Linear Shaft
RS Stock No. 892-2507
Mfr. Part No.18E-100
BrandOhmite
PHP62.48
Each (In a Pack of 50)
units
- - 175 W, 225 W - - - - - - - - - - -
RS Stock No. 891-5590
Mfr. Part No.RLS1K25E
BrandOhmite
PHP7,848.45
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. 891-5528
Mfr. Part No.RJS800E
BrandOhmite
PHP4,034.10
Each
units
800Ω ±10% 50W 300 ° Panel Mount 6.35 mm - Solder Lug 58.67 (Dia.) x 34.93mm - - 34.93mm - Linear Shaft
RS Stock No. 893-5459
Mfr. Part No.RNS75R
BrandOhmite
PHP11,988.488
Each (In a Pack of 5)
units
75Ω ±10% 300W 320 ° Panel Mount 9.53 mm - Solder Lug 152.4 (Dia.) x 60.33mm - - 60.33mm - Linear Shaft
RS Stock No. 891-5540
Mfr. Part No.RKS1K0E
BrandOhmite
PHP5,920.22
Each
units
1kΩ ±10% 100W 300 ° Panel Mount 6.35 mm - Solder Lug 79.38 (Dia.) x 44.45mm - - 44.45mm - Linear Shaft
RS Stock No. 893-5266
Mfr. Part No.RNS800E
BrandOhmite
PHP36,163.95
Each
units
800Ω ±10% 300W 320 ° Panel Mount 9.53 mm - Solder Lug 152.4 (Dia.) x 60.33mm - - 60.33mm - Linear Shaft
RS Stock No. 891-5584
Mfr. Part No.RLS10RE
BrandOhmite
PHP6,749.03
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. 892-2431
Mfr. Part No.RRS25RE
BrandOhmite
PHP21,273.52
Each
units
25Ω ±10% 500W 325 ° Panel Mount 9.53 mm - Solder Lug 203.2 (Dia.) x 53.98mm - - 53.98mm - Linear Shaft
RS Stock No. 893-4718
Mfr. Part No.RNS15RE
BrandOhmite
PHP11,411.15
Each
units
15Ω ±10% 300W 320 ° Panel Mount 9.53 mm - Solder Lug 152.4 (Dia.) x 60.33mm - - 60.33mm - Linear Shaft
RS Stock No. 892-2428
Mfr. Part No.RRS1R0E
BrandOhmite
PHP22,866.39
Each
units
±10% 500W 325 ° Panel Mount 9.53 mm - Solder Lug 203.2 (Dia.) x 53.98mm - - 53.98mm - Linear Shaft
RS Stock No. 893-5272
Mfr. Part No.RRS3R0
BrandOhmite
PHP20,558.592
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. 893-5187
Mfr. Part No.RGS7R5E
BrandOhmite
PHP4,944.788
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. 893-5608
Mfr. Part No.RGS100E
BrandOhmite
PHP5,143.95
Each (In a Pack of 5)
units
100Ω ±10% 75W 300 ° Panel Mount 6.35 mm - Solder Lug 69.25 (Dia.) x 44.45mm - - 44.45mm - Linear Shaft