Part Numbering System
RA30 Series
RA T 30 Y L ME 20 S B 102 K
NOTE: FMS = From Mounting Surface
ꢀ
Resistance Tolerance: K = 10% (standard).
ꢀ
ꢀ
ꢀ
J = 5%; G = 2%; or F = 1% (special order).
Resistance Code: Expressed in ohms. A three digit code where the first
two digits are significant figures, and the third digit indicates the number
of zeros that follow these figures. R indicates decimal point for resistance
less than 10Ω (i.e., 5R0 = 5Ω;100 = 10Ω;101 = 100Ω;102 = 1,000Ω;
103 = 10,000Ω). See table for standard resistance values.
For Single Unit: Specify taper and resistance code as shown.
For Ganged Tandem Unit or Dual Unit:
Specify a taper code and resistance code for each unit starting with
the front unit followed by the rear unit. If both units have the same taper
and resistance codes, add “X2” suffix per example below.
Examples: B102A503 or if both units are the same: B102X2
For Triple Unit:
Specify a taper code and resistance code for each unit starting with
the front unit followed by the middle and rear units. If all units have the
same taper and resistance codes, add “X3” suffix per example below.
Examples: B102A503B104 or if all units are the same: B102X3
Resistance Taper: B = Linear; A = CW Audio (logarithm);
C = CCW Audio (logarithm).
Shaft End Style: S = Slotted; F = Flatted; R = Round.
For Single Shaft:
Specify the shaft length (FMS) and shaft end style as shown.
For Dual Concentric Shaft:
Specify the shaft length (FMS) and shaft end style for the inner shaft
followed by the shaft length (FMS) and shaft end style for the outer
shaft. Use a dash (-) to separate the code groups for the inner and
outer shaft specifications. Example: 30R-20R
Standard Shaft Length: 15 = 15mm FMS; 20 = 20mm FMS.
Up to 50mm shaft length available (special order).
Switch Type: ME = SPDT,110VAC, 1A, Rear Exit Lug Terminals.
MF = SPDT,110VAC, 3A, Rear Exit Lug Terminals.
SE = SPST, 110VAC, 1A, Rear Exit Lug Terminals.
SF = SPST, 110VAC, 3A, Rear Exit Lug Terminals.
Blank = No Switch.
Style: Blank = Panel Mount, Single Unit, Single Shaft, Right Angle Ear-Lug
Terminals.
L
= Panel Mount, Single Unit, Single Shaft with Shaft Lock,
Right Angle Ear-Lug Terminals.
G
= Panel Mount, Ganged Tandem Unit, Single Shaft, Right Angle
Ear-Lug Terminals on Each Unit.
GL = Panel Mount, Ganged Tandem Unit, Single Shaft with Shaft
Lock, Right Angle Ear-Lug Terminals on Each Unit.
= Panel Mount, Triple Unit, Single Shaft, Right Angle Ear-Lug
Terminals on Each Unit.
T
D
= Panel Mount, Dual Unit, Dual Concentric Shaft, Right Angle
Ear-Lug Terminals on Each Unit.
ꢁ
Operating Temperature Range: Y = ꢃ10ꢂC to 100ꢂC.
ꢁ
X = ꢃ30ꢂC to 100ꢂC.
Size: 30 = 30mm Diameter.
Center Tap: T = With Tap; Blank = Without Tap.
TOCOS Series Name: RA = Wirewound Element.
Standard Resistance Values and Part Numbering Codes
Standard Nominal Total Resistance Values and Part Numbering Codes
Resistance (Ω)
Code
Resistance (Ω)
Code
Resistance (Ω)
Code
Resistance (Ω)
Code
05
10
20
50
5R0
100
200
500
100
200
500
101
201
501
1,000
2,000
5,000
102
202
502
10,000
20,000
103
203
Refer to Shaft End Styles Specifications and Hardware Specifications for details and availability.
For additional information, refer to Guidelines and Precautions for Using Panel Controls.
TOCOSAMERICA,INC.
67
1177 East Tower Road, Schaumburg, IL 60173 Tel: 847-884-6664 Fax: 847-884-6665 E-mail: sales tocos.com www.tocos.com
@
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