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.

...
Read more Read less

Filters

Viewing 1 - 20 of 246 products
Results per page
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. 788-7832
Mfr. Part No.RT025AS4700KB
BrandVishay
HK$757.01
Each
units
470Ω ±10% 25W 1 Panel Mount 6 mm 10.5mm Solder Lug 38 (Dia.) x 50mm - - 50mm +320°C -
RS Stock No. 168-0127
Mfr. Part No.RT025AS4700KB
BrandVishay
HK$593.266
Each (In a Pack of 25)
units
470Ω ±10% 25W 1 Panel Mount 6 mm 10.5mm Solder Lug 38 (Dia.) x 50mm - - 50mm +320°C -
RS Stock No. 827-6400
Mfr. Part No.VRH320 10R K
BrandArcol
HK$1,767.42
Each
units
10Ω - - - Surface Mount - - Solder Lug 446 x 93 x 150mm 93mm 150mm 446mm - Slide
RS Stock No. 891-5411
Mfr. Part No.RHS2K5E
HK$588.05
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. 827-6404
Mfr. Part No.VRH320 10K K
BrandArcol
HK$1,640.76
Each
units
10kΩ ±10% - - Surface Mount - - Solder Lug 446 x 93 x 150mm 93mm 150mm 446mm - Slide
RS Stock No. 891-5503
Mfr. Part No.RJS50KE
BrandOhmite
HK$813.65
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. 788-7693
Mfr. Part No.RT055AS1002KB
BrandVishay
HK$2,592.39
Each
units
10kΩ ±10% 55W 1 Panel Mount 6 mm 10.5mm Solder Lug 60 (Dia.) x 64mm - - 64mm +320°C -
RS Stock No. 795-4847
Mfr. Part No.RT025AS2201KB
BrandVishay
HK$793.08
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. 788-7712
Mfr. Part No.RT055AS4701KB
BrandVishay
HK$2,769.69
Each
units
4.7kΩ ±10% 55W 1 Panel Mount 6 mm 10.5mm Solder Lug 60 (Dia.) x 64mm - - 64mm +320°C -
RS Stock No. 167-8618
Mfr. Part No.RT025AS2201KB
BrandVishay
HK$797.85
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. 891-5486
Mfr. Part No.RJS2K5E
BrandOhmite
HK$683.34
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. 167-9886
Mfr. Part No.RT055AS1002KB
BrandVishay
HK$2,247.871
Each (In a Pack of 25)
units
10kΩ ±10% 55W 1 Panel Mount 6 mm 10.5mm Solder Lug 60 (Dia.) x 64mm - - 64mm +320°C -
RS Stock No. 827-6397
Mfr. Part No.VRH320 33R K
BrandArcol
HK$1,276.69
Each
units
33Ω - - - Surface Mount - - Solder Lug 446 x 93 x 150mm 93mm 150mm 446mm - Slide
RS Stock No. 167-9889
Mfr. Part No.RT055AS4701KB
BrandVishay
HK$2,247.871
Each (In a Pack of 25)
units
4.7kΩ ±10% 55W 1 Panel Mount 6 mm 10.5mm Solder Lug 60 (Dia.) x 64mm - - 64mm +320°C -
RS Stock No. 827-6407
Mfr. Part No.VRH320 1K K
BrandArcol
HK$1,549.74
Each
units
1kΩ ±10% - - Surface Mount - - Solder Lug 446 x 93 x 150mm 93mm 150mm 446mm - Slide
RS Stock No. 892-2456
Mfr. Part No.RUS1R0E
BrandOhmite
HK$8,105.50
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. 891-5430
Mfr. Part No.RHS5K0E
HK$437.16
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. 891-5629
Mfr. Part No.RNS1K5E
BrandOhmite
HK$2,087.00
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. 891-5420
Mfr. Part No.RHS3K5E
HK$570.92
Each
units
3.5kΩ ±10% 25W 300 ° Panel Mount 6.35 mm - Solder Lug 39.62 (Dia.) x 34.93mm - - 34.93mm - Linear Shaft
RS Stock No. 788-7703
Mfr. Part No.RT055AS10R0KB
BrandVishay
HK$2,808.68
Each
units
10Ω ±10% 55W 1 Panel Mount 6 mm 10.5mm Solder Lug 60 (Dia.) x 64mm - - 64mm +320°C -
Related Products
Endurance vented ABS shell helmet without retractable visor. ...
Description:
Endurance vented ABS shell helmet without retractable visor. Improved sold with 4 points chin strap included. Endurance HelmetMaximum wearer comfortEasy to adjust even while wearing glovesLightweight for increased wearer comfortImproved certified performances.
Innovative Unvented Safety Helmet with Crashbox Impact Absorption ...
Description:
Innovative Unvented Safety Helmet with Crashbox Impact Absorption System. Crashbox - the patented, double walled impact absorption system located on the top of the helmetUnventedSlots (30mm) for hearing protection6-point textile suspension harnessRatchet - easy to adjust even with gloves onFleece ...
Safety Helmet With 6-Point Suspension Harness and Pinlock ...
Description:
Safety Helmet With 6-Point Suspension Harness and Pinlock Adjustable Headband, Ratchet Optional. 12 ventilation holesSlots (30mm) for hearing or eye protection accessories 6-point textile suspension harnessPinlock or ratchet adjustable headband (model dependant)Fleece sweatband4-point self-releasing chin-strap ...
Introducing the G3000 from 3M™, it's a ventilated ...
Description:
Introducing the G3000 from 3M™, it's a ventilated hard hat with a slim, softly rounded design without any sharp or protruding components. The life of a hart hat is affected by physical, chemical damage and UV radiation from the sun. ...