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. 891-5486
Mfr. Part No.RJS2K5E
BrandOhmite
HK$777.91
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. 891-5503
Mfr. Part No.RJS50KE
BrandOhmite
HK$882.16
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. 891-5629
Mfr. Part No.RNS1K5E
BrandOhmite
HK$2,319.71
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. 893-5459
Mfr. Part No.RNS75R
BrandOhmite
HK$2,454.658
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. 892-2456
Mfr. Part No.RUS1R0E
BrandOhmite
HK$8,788.06
Each
units
±10% 1kW 335 ° Panel Mount 9.53 mm - Solder Lug 304.8 (Dia.) x 76.2mm - - 76.2mm - Linear Shaft
RS Stock No. 893-5181
Mfr. Part No.RHL1K5E
BrandOhmite
HK$617.928
Each (In a Pack of 5)
units
1.5kΩ ±10% 25W 300 ° Panel Mount 6.35 mm - Solder Lug 39.62 (Dia.) x 34.93mm - - 34.93mm - Linear Shaft
RS Stock No. 893-4100
Mfr. Part No.RLS1R0E
BrandOhmite
HK$1,518.62
Each
units
±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
HK$857.14
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. 893-5298
Mfr. Part No.RKS2K0E
BrandOhmite
HK$1,166.67
Each (In a Pack of 5)
units
2kΩ ±10% 100W 300 ° Panel Mount 6.35 mm - Solder Lug 79.38 (Dia.) x 44.45mm - - 44.45mm - Linear Shaft
RS Stock No. 891-5584
Mfr. Part No.RLS10RE
BrandOhmite
HK$1,334.22
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. 893-4706
Mfr. Part No.RLS75RE
BrandOhmite
HK$869.48
Each
units
75Ω ±10% 150W 300 ° Panel Mount 6.35 mm - Solder Lug 101.6 (Dia.) x 50.8mm - - 50.8mm - Linear Shaft
RS Stock No. 893-5184
Mfr. Part No.RGS200E
BrandOhmite
HK$922.204
Each (In a Pack of 5)
units
200Ω ±10% 75W 300 ° Panel Mount 6.35 mm - Solder Lug 69.25 (Dia.) x 44.45mm - - 44.45mm - Linear Shaft
RS Stock No. 893-5272
Mfr. Part No.RRS3R0
BrandOhmite
HK$3,667.95
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. 891-5496
Mfr. Part No.RJS3K5E
BrandOhmite
HK$718.88
Each
units
3.5kΩ ±10% 50W 300 ° Panel Mount 6.35 mm - Solder Lug 58.67 (Dia.) x 34.93mm - - 34.93mm - Linear Shaft
RS Stock No. 892-2434
Mfr. Part No.RRS2K5E
BrandOhmite
HK$3,294.564
Each (In a Pack of 5)
units
2.5kΩ ±10% 500W 325 ° Panel Mount 9.53 mm - Solder Lug 203.2 (Dia.) x 53.98mm - - 53.98mm - Linear Shaft
RS Stock No. 892-8085
Mfr. Part No.RUS100E
BrandOhmite
HK$8,981.16
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. 893-5440
Mfr. Part No.RPS200
BrandOhmite
HK$2,690.878
Each (In a Pack of 5)
units
200Ω ±10% 225W 310 ° Panel Mount 9.53 mm - Solder Lug 127 (Dia.) x 53.98mm - - 53.98mm - Linear Shaft
RS Stock No. 892-8565
Mfr. Part No.RLS5R0E
BrandOhmite
HK$1,622.96
Each
units
±10% 150W 300 ° Panel Mount 6.35 mm - Solder Lug 101.6 (Dia.) x 50.8mm - - 50.8mm - Linear Shaft
RS Stock No. 893-5608
Mfr. Part No.RGS100E
BrandOhmite
HK$863.562
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
RS Stock No. 892-6698
Mfr. Part No.RES125E
BrandOhmite
HK$483.43
Each
units
125Ω ±10% 12.5W 300 ° Panel Mount 3.18 mm - Solder Lug 22.23 (Dia.) x 17.46mm - - 17.46mm - Linear Shaft