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庫存編號 891-5430
製造零件編號RHS5K0E
HK$305.06
單位
5kΩ ±10% 25W 300 ° Panel Mount 6.35 mm - Solder Lug 39.62 (Dia.) x 34.93mm - - 34.93mm - Linear Shaft
RS庫存編號 893-5459
製造零件編號RNS75R
BrandOhmite
HK$2,091.464
/個 (每包:5個)
單位
75Ω ±10% 300W 320 ° Panel Mount 9.53 mm - Solder Lug 152.4 (Dia.) x 60.33mm - - 60.33mm - Linear Shaft
RS庫存編號 168-0124
製造零件編號RT025AS4701KB
BrandVishay
HK$810.25
/個 (每包:25個)
單位
4.7kΩ ±10% 25W 1 Panel Mount 6 mm 10.5mm Solder Lug 38 (Dia.) x 50mm - - 50mm +320°C -
RS庫存編號 892-2456
製造零件編號RUS1R0E
BrandOhmite
HK$7,890.44
單位
±10% 1kW 335 ° Panel Mount 9.53 mm - Solder Lug 304.8 (Dia.) x 76.2mm - - 76.2mm - Linear Shaft
RS庫存編號 891-5420
製造零件編號RHS3K5E
HK$340.64
單位
3.5kΩ ±10% 25W 300 ° Panel Mount 6.35 mm - Solder Lug 39.62 (Dia.) x 34.93mm - - 34.93mm - Linear Shaft
RS庫存編號 891-5408
製造零件編號RHS25KE
HK$393.07
單位
25kΩ ±10% 25W 300 ° Panel Mount 6.35 mm - Solder Lug 39.62 (Dia.) x 34.93mm - - 34.93mm - Linear Shaft
RS庫存編號 167-9890
製造零件編號RT055AS22R0KB
BrandVishay
HK$1,197.93
/個 (每包:25個)
單位
22Ω ±10% 55W 1 Panel Mount 6 mm 10.5mm Solder Lug 60 (Dia.) x 64mm - - 64mm +320°C -
RS庫存編號 168-0117
製造零件編號RT025AS1000KB
BrandVishay
HK$772.311
/個 (每包:25個)
單位
100Ω ±10% 25W 1 Panel Mount 6 mm 10.5mm Solder Lug 38 (Dia.) x 50mm - - 50mm +320°C -
RS庫存編號 144-5536
製造零件編號RJS6R0E
HK$617.74
單位
10% 50W 300 ° Panel Mount 6.35 mm - Solder 58.67 (Dia.) x 34.93mm 58.67 (Dia.)mm - 34.93mm - Linear Shaft
RS庫存編號 893-5724
製造零件編號RHL500
BrandOhmite
HK$440.36
/個 (每包:5個)
單位
500Ω ±10% 25W 300 ° Panel Mount 6.35 mm - Solder Lug 39.62 (Dia.) x 34.93mm - - 34.93mm - Linear Shaft
RS庫存編號 892-8394
製造零件編號RNS2K5E
BrandOhmite
HK$2,088.09
單位
2.5Ω ±10% 300W 320 ° Panel Mount 9.53 mm - Solder Lug 152.4 (Dia.) x 60.33mm - - 60.33mm - Linear Shaft
RS庫存編號 893-5727
製造零件編號RHL5K0
BrandOhmite
HK$473.49
/個 (每包:5個)
單位
5kΩ ±10% 25W 300 ° Panel Mount 6.35 mm - Solder Lug 39.62 (Dia.) x 34.93mm - - 34.93mm - Linear Shaft
RS庫存編號 891-5610
製造零件編號RNS10RE
BrandOhmite
HK$1,746.55
單位
10Ω ±10% 300W 320 ° Panel Mount 9.53 mm - Solder Lug 152.4 (Dia.) x 60.33mm - - 60.33mm - Linear Shaft
RS庫存編號 167-9884
製造零件編號RT055AS2201KB
BrandVishay
HK$1,289.94
/個 (每包:25個)
單位
2.2kΩ ±10% 55W 1 Panel Mount 6 mm 10.5mm Solder Lug 60 (Dia.) x 64mm - - 64mm +320°C -
RS庫存編號 168-0118
製造零件編號RT025AS15R0KB
BrandVishay
HK$772.311
/個 (每包:25個)
單位
15Ω ±10% 25W 1 Panel Mount 6 mm 10.5mm Solder Lug 38 (Dia.) x 50mm - - 50mm +320°C -
RS庫存編號 891-5402
製造零件編號RHS25RE
HK$272.98
單位
25Ω ±10% 25W 300 ° Panel Mount 6.35 mm - Solder Lug 39.62 (Dia.) x 34.93mm - - 34.93mm - Linear Shaft
RS庫存編號 144-5537
製造零件編號RKS10RE
HK$875.56
單位
10Ω 10% 100W 300 ° Panel Mount 6.35 mm - Solder 79.38 (Dia.) x 44.45mm 79.38 (Dia.)mm - 44.45mm - Linear Shaft
RS庫存編號 788-7699
製造零件編號RT055AS1000KB
BrandVishay
HK$1,418.38
單位
100Ω ±10% 55W 1 Panel Mount 6 mm 10.5mm Solder Lug 60 (Dia.) x 64mm - - 64mm +320°C -
RS庫存編號 893-4106
製造零件編號RGS1K0E
BrandOhmite
HK$526.67
單位
1kΩ ±10% 75W 300 ° Panel Mount 6.35 mm - Solder Lug 69.25 (Dia.) x 44.45mm - - 44.45mm - Linear Shaft
RS庫存編號 893-4100
製造零件編號RLS1R0E
BrandOhmite
HK$1,162.20
單位
±10% 150W 300 ° Panel Mount 6.35 mm - Solder Lug 101.6 (Dia.) x 50.8mm - - 50.8mm - Linear Shaft