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 OperateRheostats 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 TypesSeveral 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. 892-2425
Mfr. Part No.RRS12R5E
BrandOhmite
£331.882
Each (In a Pack of 5)
Units
12.5Ω ±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
£203.28
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. 893-4706
Mfr. Part No.RLS75RE
BrandOhmite
£71.32
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. 892-8344
Mfr. Part No.RHS125E
BrandOhmite
£44.39
Each
Units
125Ω ±10% 25W 300 ° Panel Mount 6.35 mm - Solder Lug 39.62 (Dia.) x 34.93mm - - 34.93mm - Linear Shaft
RS Stock No. 891-5405
Mfr. Part No.RHS250E
£45.88
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. 893-5181
Mfr. Part No.RHL1K5E
BrandOhmite
£50.43
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. 893-4702
Mfr. Part No.RLS35RE
BrandOhmite
£116.68
Each
Units
35Ω ±10% 150W 300 ° Panel Mount 6.35 mm - Solder Lug 101.6 (Dia.) x 50.8mm - - 50.8mm - Linear Shaft
RS Stock No. 893-3419
Mfr. Part No.RNS400E
BrandOhmite
£188.16
Each (In a Pack of 5)
Units
400Ω ±10% 300W 320 ° Panel Mount 9.53 mm - Solder Lug 152.4 (Dia.) x 60.33mm - - 60.33mm - Linear Shaft
RS Stock No. 893-5171
Mfr. Part No.RCS5K0E
BrandOhmite
£203.398
Each (In a Pack of 5)
Units
5kΩ ±10% 7.5W 300 ° Panel Mount 3.18 mm - Solder Lug 13.08 (Dia.) x 15.88mm - - 15.88mm - Linear Shaft
RS Stock No. 2509192647
Mfr. Part No.RKS300E
BrandOhmite
£64.90
Each
Units
- - - - - - - - - - - - - -
RS Stock No. 2509192940
Mfr. Part No.RNS2R0E
BrandOhmite
£179.22
Each
Units
- - - - - - - - - - - - - -
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Description:
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