RA25 Datasheet, PDF (1/4 Pages) TOCOSAMERICA, INC. – 25mm Diameter, Single-Turn,Wirewound Industrial Panel Controls

RA25 Series
TOCOS®
PANEL CONTROLS
25mm Diameter, Single-Turn, Wirewound Industrial Panel Controls
RA25Y
RA25YG
RA25YPR
Features
Ⅲ 25mm diameter, single-turn industrial panel controls Ⅲ Wirewound element Ⅲ Linear or audio tapers
Ⅲ Single and tandem units, single shaft; dual unit, dual shaft Ⅲ Metal shaft and bushing Ⅲ Shaft lock models available
Ⅲ Panel mounting styles only Ⅲ Right angle ear-lug terminals Ⅲ 6mm diameter shafts in slot, flat or round end styles
Ⅲ Standard 15mm or 20mm shaft length Ⅲ Low operating temperature option of ؁10؇C or ؁30؇C, up to ؀100؇C
Specifications
Electrical
Standard Resistance Range . . . . . . . . . . . B = 5Ω to 20kΩ
A,C = 100Ω to 5kΩ
Resistance Tolerance . . . . . . . . . . . . . . . . . ؓ10% standard
(ؓ5%,ؓ2% or ؓ1% special order )
End Resistance . . . . . . . . . . . . . . . . . . R ! 500Ω = 1Ω max.
R ⁰ 500Ω = 0.2% max.
Resistance Taper . . . . B = linear; A = CW audio (logarithm);
C = CCW audio (logarithm); RA25YPR model is linear only.
Power Rating . . . . . B = 1.2 watts; A,C = 0.6 watt, at ؀40؇C
Insulation Resistance . . . . . . . 100MΩ minimum at 500VDC
Dielectric Strength . . . . . . . . . . . . . . . . . . 500VAC, 1 minute
Theoretical Resolution
Resistance ( Ω )
5
10
20
50
100
200
Resolution ( % )
1.93
1.32
0.85
0.62
0.45
0.38
Resistance ( Ω )
500
1,000
2,000
5,000
10,000
–
Resolution ( % )
0.29
0.19
0.26
0.19
0.15
–
Mechanical
Mechanical Travel . . . . . . . . . . . . . . . . . . . . . . . . . . 300؇ؓ5؇
Shaft Torque
Single Unit . . . . . . 71.4 to 306 gf • cm (0.99 to 4.242 oz • in)
Tandem Unit . . . 71.4 to 714 gf • cm (0.987 to 9.899 oz • in)
Dual Unit . . . . . . 71.4 to 459 gf • cm (0.987 to 6.363 oz • in)
Stop Strength . . . . . . . . . . . . 10.2 kgf • cm (141.4 oz • in) max.
Mounting Nut Torque . . . . . . 15 kgf • cm (207.94 oz • in) max.
Solderability . . . . . . . . . . . . . . . . . . . . . . . 235؇C, 3 seconds
Marking . . . . . . . . . . Taper, resistance, resistance tolerance,
terminal identification, date code
Environmental
Temperature Range . . . . . . . . . . . . . . Y = ؁10؇C to ؀100؇C
or X = ؁30؇C to ؀100؇C
Temperature Characteristics . . . . . . . . . . .؀85؇C, 5 hours
without load
∆T/R ⁾ؓ5%
Low Temperature Exposure . . . . . . . ؁10؇C ( Y ),؁30؇C ( X )
1 hour without load
∆T/R ⁾ؓ3%
Load Life . . . . . . . . . . . . ؀40؇C, 1,000 hours with rated load
∆T/R ⁾ؓ3%
Moisture and Load Life . . . . . . . . . . . .؀40؇C, 90-95%RH,
500 hours with 1/10 rated load
∆T/R ⁾ؓ5%
Vibration . . . . . . . . . . . . . . . . . . .10-55Hz, 1.5mm amplitude,
2 directions, 2 hours each
∆T/R ⁾ؓ1%
Soldering Heat Resistance . . . . . . . . . 350؇C, 3.5 seconds;
∆T/R ⁾ؓ2%
Rotational Life . . . . 15,000 cycles (500 cycles for shaft lock
models only) with 1/2 rated load
∆T/R ⁾ؓ3%
R = Total Resistance Value; ∆T/R = Total Resistance Change
TOCOS AMERICA, INC.
57
1177 East Tower Road, Schaumburg, IL 60173 Tel: [phone] Fax: [phone] E-mail: [e-mail] www.tocos.com