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Variable Transformer Brushes
General Radio, Powerstat, Staco Energy Products, Superior Electric, Variac, Weschler

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Figure RB10 Drawing     Figure T Bird Drawing     tbird2 drawing Variac 1 Drawing           Variac 3A Drawing
Part Price
Retip your old
assembly or
exchange discount
Brass Carbon Material Notes
Thickness Width Length Thickness Width Length
9T18Y900
   Powerstat
   Superior Electric
   RB10B
   RB10BM
   RB10C
   RB12C
   030098-001
   Staco
   146-0121-S
   Weschler
$22.43
N/A N/A N/A N/A t1=0.310"
t2=0.114"
t3=0.050"
w=0.156" l1=0.218"
l2=0.050"
l3=0.050"
Black E Figure tbird,
146-0121-S, 10-B, 10-C, 12-C,
171, 201, 201-40, 221, 221B, 251,
252, 291, 511, 3PN221B,
3PN501B
RBQ116
   Powerstat
   Superior ELectric
   065206-001
   RBQ117
   RB-Q117
   065206-003
$75.00
$25.00
Details at
bottom of page
0.250" 0.250" 0.470" 0.125"
tapers to
0.062"
0.245" 0.125" Black E Variac1, RB-Q116
Holes are 0.500" center to center
Holes are 0.118" diameter
RBQ216
   Powerstat
   Superior Electric
   065206-002
   RBQ217
$75.00
$25.00
Details at
bottom of page
0.250" 0.250" 0.470" 0.156"
tapers to
0.036"
0.245"
tapers to
0.187"
assymetrically
0.125" Gray E Variac1, RB-Q216, RB-Q217
Holes are 0.500" center to center
Holes are 0.118" diameter
RB10
   Powerstat
   Superior Electric
$37.50
$12.50
Details at
bottom of page
0.375"
hole diam.
0.281" 1.375" 0.250"
tapers to
0.032"
0.150" 0.144" Black E Figure RB-10,
10, RB-10
RB10B-40
   All carbon now
   Powerstat
   Superior Electric
   RB10C-40
   030098-004
$22.50
$12.50
Details at
bottom of page
t1=0.312"
t2=0.128"
w=0.153" l1=0.153"
l2=0.089"
l3=0.107"
t2=0.125"
t3=0.084"
w=0.125" 0.125" Black E Figure tbird2, 10-C-40
All carbon, was brass and carbon
RB12
   Powerstat
   Superior Electric
   030098-005
$22.50
$7.50
Details at
bottom of page
t1=0.310"
t2=0.128"
w=0.092" 0.162" t3=0.125"
tapers to
0.047"
w=0.092" 0.102" Black E Figure tbird2,
12, RB-12
RB20
   Powerstat
   Superior Electric
$58.50
$19.50
Details at
bottom of page
0.306" 0.300" 0.600 0.156"
tapers to
0.050"
0.250" 0.187" Black E Figure Variac3A, 20, RB-20
Plate: 0.450 x 1.156"
Elongated Hole: 0.142 x 0.204"
RB21
   Powerstat
   Superior Electric
   060098-001
$97.50
$32.50
Details at
bottom of page
0.312" 0.312" 0.500" 0.164"
tapers to
0.062"
0.250" 0.164" Black E Variac1, 21
Holes are 0.565" center to center
Holes are 0.150" diameter
RB21-40
   Powerstat
   Superior Electric
   060098-002
$63.00
$21.00
Details at
bottom of page
              21-40
RB22
   Powerstat
   Superior Electric
   060117-001
$76.50
$25.50
Details at
bottom of page
0.312" 0.301" 0.467" 0.156"
tapers to
0.032"
0.193" 0.156" Gray E Variac1, 22, RB-22
Holes are 0.590" center to center
Holes are 0.153" diameter
BHD35625G1
   Powerstat
   Superior Electric
$67.50
$22.50
Details at
bottom of page
0.312" 0.301" 0.593" 0.187"
tapers to
0.064"
0.250" 0.187" Gray E Variac1, for Type 20

Variable Transformer Brushes
General Radio, Powerstat, Staco Energy Products, Superior Electric, Variac, Weschler

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Variac RB116B-40 Drawing     Variac 1 Drawing               
Part Price
Retip your old
assembly or
exchange discount
Brass Carbon Material Notes
Thickness Width Length Thickness Width Length
RB116
   Powerstat
   Superior Electric
$63.00
$17.00
Details at
bottom of page
0.375" 0.375" 0.884" 0.187"
tapers to
0.062"
0.250" 0.281" Black E Variac3, 116, RB-116
Plate: 0.500" x 1.411"
Hole: 0.173" x 0.236"
RB116B
   Powerstat
   Superior Electric
   RB116C
   RB117B
   RB117C
   RB3600
   065431-001

Variac RB116B Drawing
$127.50
$42.50
Details at
bottom of page
0.375" 0.375" 0.750" 0.187"
tapers to
0.062"
0.250" 0.157" Black E Variac1, 116-B, RB-116,
RB-116C, RB-117B, RB-3600
Holes are 1.062" center to center
Holes are 0.153" diameter
RB116B-40
   Powerstat
   Superior Electric
   RB116C-40
   065431-004
$92.70
$30.90
Details at
bottom of page
0.375" 0.375" 0.750" 0.187" 0.250" 0.157" Black E Figure RB116B-40,
116-B-40
RB126
   Powerstat
   Superior Electric
   122819-001
$127.50
$42.50
Details at
bottom of page
0.500" 0.500" 0.562" 0.187"
tapers to
0.093"
0.444" 0.160" Black E Variac1, 126
Holes are 0.750" center to center
Holes are 0.156" diameter
RB136
   Powerstat
   Superior Electric
   056135-001
$127.50
$42.50
Details at
bottom of page
0.500" 0.750" 0.780" 0.187"
tapers to
0.125"
0.695" 0.218" Black E Variac1, 136, RB-136
Holes are 1.000" center to center
Holes are 0.167" diameter
RBLW136
   Powerstat
   Superior Electric
   056223-001
$78.00
$26.00
Details at
bottom of page
0.500" 0.740" 0.780" 0.375" 0.685" 0.205" Gray E Variac1, RB-LW-136
Holes are 1.000" center to center
Holes are 0.168"
RB146
   Powerstat
   Superior Electric
   176012-001
$151.50
$50.50
Details at
bottom of page
0.500" 0.437" 0.815" 0.187" inner
0.250" outer
0.406" 0.218" Black E Variac2, 146, RB-146,
Holes are 1.625" center to center
Holes are 0.187" diameter

Variable Transformer Brushes
General Radio, Powerstat, Staco Energy Products, Superior Electric, Variac, Weschler

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Variac 1 Drawing                    Figure
                Variac4 Drawing
Part Price
Retip your old
assembly or
exchange discount
Brass Carbon Material Notes
Thickness Width Length Thickness Width Length
RB216/RB217
   Powerstat
   Superior Electric
   RB216
   RB217
$51.00
$17.00
Details at
bottom of page
0.375" 0.360" 0.875" 0.187"
tapers to
0.047"
0.325"
tapers to
0.187"
assymetrically
0.270" Graphite G Variac3,
Plate: 0.490" x 1.427"
Hole: 0.175" x 0.240"
RB216B
   Powerstat
   Superior Electric
   RB216C
   RB217B
   RB217C
   065431-002
$51.00
$17.00
Details at
bottom of page
0.375" 0.375" 0.750" 0.187"
tapers to
0.047"
0.250" 0.187" Graphite G Variac1, 216-B, 216-C, 217-C
Holes are 1.062" center to center
Holes are 0.153" diameter
RB226
   Powerstat
   Superior Electric
   122819-002
$88.50
$29.50
Details at
bottom of page
0.500" 0.343" 0.562" 0.187"
tapers to
0.042"
0.222" 0.178" Black E Variac1, 226, RB-226
Holes are 0.750" center to center
Holes are 0.153" diameter
RB236
   Powerstat
   Superior Electric
   056135-002
$88.50
$29.50
Details at
bottom of page
0.500" 0.500" 0.780" 0.187"
tapers to
0.062"
0.408" 0.172" Gray E Variac1, 236, RB-236
Holes are 1.000" center to center
Holes are 0.170" diameter
RB246
   Powerstat
   Superior Electric
   176012-002
$135.00
$45.00
Details at
bottom of page
0.500" 0.437" 0.812" 0.187"
tapers to
0.093
0.408" 0.187" Gray E Variac4, 246
Holes are 1.625" center-to-center
Holes are 0.187" diameter

Variable Transformer Brushes
General Radio, Powerstat, Staco Energy Products, Superior Electric, Variac, Weschler

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Variac 1 Drawing                     Figure Variac B Drawing
Part Price
Retip your old
assembly or
exchange discount
Brass Carbon Material Notes
Thickness Width Length Thickness Width Length
RB1126
   Powerstat
   Superior Electric
   RB1226
$34.50
$11.50
Details at
bottom of page
0.250" 0.500" 0.875" 0.125"
tapers to
0.042"
0.225" 0.225" Graphite G VariacB,
1.500" lead with D-0.144" terminal
RB1156
   Powerstat
   Superior Electric
$37.50
$12.50
Details at
bottom of page
0.500" 0.500" 0.860" 0.187" <0.500" 0.270" Gray E VariacB,
1.875" lead with D-0.144" terminal
RB1156B
   Powerstat
   Superior Electric
   RB1156C
   RB1156D
   017702-003
$184.50
$61.50
Details at
bottom of page
0.500" 0.500" 0.900" 0.187" <0.500" 0.281" Black E Variac2,
1156-B, 1156-D
Holes are 0.943" center to center
Holes are 0.218" diameter
RB1256
   Powerstat
   Superior Electric
$37.50
$12.50
Details at
bottom of page
0.500" 0.500" 0.875" 0.187"
tapers to
0.150"
0.462" 0.312" Black E VariacB,
2.187" lead with D-0.171" terminal
RB1256B
   Powerstat
   Superior Electric
   RB1256C
   RB1256D
   017702-004
$147.00
$49.00
Details at
bottom of page
0.500" 0.500" 0.900" 0.187"
tapers to
0.125"
<0.500" 0.281" Gray E Variac 2,
A212609-1, 1256-B, 1256-C
Holes are 0.943" center to center
Holes are 0.215" diameter
RB1296D
   Powerstat
   Superior Electric
   017702-012
$147.00
$49.00
Details at
bottom of page
0.500" 0.500" 0.900" 0.187"
tapers to
0.093"
0.455" 0.281" Black E Variac2, 1296-D
Holes are 0.943" center to center
Holes are 0.215" diameter
RBLW1X56-30.60
   Powerstat
   Superior Electric
$147.00
$49.00
Details at
bottom of page
0.500" 0.500" 0.900" 0.187" 0.455" 0.281" Graphite G Variac2,
Holes are 0.943" center to center
Holes are 0.215" diameter
RB1800
   Powerstat
   Superior Electric
   WDB1800
$117.00
$39.00
Details at
bottom of page
0.500" 0.750" 0.780" 0.187"
tapers to
0.125"
0.695" 0.187" Black E Variac1, 1800, RB-1800
Holes are 1.000" center to center
Holes are 0.167" diameter
RB2500
   Powerstat
   Superior Electric
$78.00
$31.00
Details at
bottom of page
0.500" 0.500" 0.780" 0.187" 0.470" 0.187" Black E Variac1,
Holes are 1.000" center to center
Holes are 0.167" diameter
RB6000
   Powerstat
   Superior Electric
   RB-6000
$97.50
$32.50
Details at
bottom of page
0.500" 0.500" 0.900" 0.187" <0.500" 0.281" Black E Variac 2, D6000
Holes are 0.943" center to center
Holes are 0.175" diameter

Variable Transformer Brushes
General Radio, Powerstat, Staco Energy Products, Superior Electric, Variac, Weschler

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Figure VB-1 Drawing      Figure VB-1T Drawing
Part Price
Retip your old
assembly or
exchange discount
Brass Carbon Material Notes
Thickness Width Length Thickness Width Length
VB-1
   General Radio
   3200-5901
$52.50
$17.50
Details at
bottom of page
0.375" diameter 0.531" 0.062" 0.187" 0.125"
extended
Black E Figure VB-1, M2, W2, W5H
0.625" base width
VB-2
   General Radio
   3200-5900
$52.50
$17.50
Details at
bottom of page
0.375" diameter 0.531" 0.092" 0.250" 0.125"
extended
Gray E Figure VB-1, M5, W5, W5L, W5MT3,
W5MT3A, 0.625" base width
VBT-2
   General Radio
$52.50
$17.50
Details at
bottom of page
0.375" diameter 0.531" 0.092" 0.250" 0.125"
extended
Gray E Figure VB-1T,
0.625" base width
Lead 1.062" Terminal: C-0.156"
VB-3
   General Radio
   3200-5923
$52.50
$17.50
Details at
bottom of page
0.375" diameter 0.531" 0.062 0.250" 0.125"
extended
Gray E ~Figure VB-1T, W8, W8L
0.625" base width
Lead 1.062" Terminal: Special U shape
VBT-4
   General Radio
$52.50
$17.50
Details at
bottom of page
0.375" diameter 0.531" 0.062" 0.312" 0.125"
extended
Graphite G Figure VB-1T,
0.625" base width
Lead 1.062" Terminal: C-0.156"
VBT-5
   General Radio
$52.50
$17.50
Details at
bottom of page
0.375" diameter 0.531" 0.175" 0.250" 0.125"
extended
Black E Figure VB-1T,
0.625" base width
Lead 1.062" Terminal: C-0.156"

Variable Transformer Brushes
General Radio, Powerstat, Staco Energy Products, Superior Electric, Variac, Weschler

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Variac 1 Drawing        Figure VBT6 Drawing        Variac
                VB-8 Drawing     Figure VB-10
                Drawing      Figure VB-10T Drawing      Figure VBT-12 Drawing      Figure VBT-14 Drawing
Part Price
Retip your old
assembly or
exchange discount
Brass Carbon Material Notes
Thickness Width Length Thickness Width Length
VBT-6
   General Radio
   3200-5906
$321.00 $107.00
Details at
bottom of page
0.333" 0.625" 0.575" 0.150" 0.330" 0.250" Black E Figure VBT-6,
Holes are 2.250" center to center
Holes are 0.125" diameter
Leads 1.062" Terminals: C-0.125"
W50
VB-7
   General Radio
   3200-5907
$321.00 call for rfq $107.00
Details at
bottom of page
              W50H
VBT-7
   General Radio
$321.00 $107.00
Details at
bottom of page
0.333" 0.625" 0.575" 0.093" 0.330" 0.281" Black E Figure VBT-6,
Holes are 2.250" center to center
Holes are 0.125" diameter
Leads 1.062" Terminals: C-0.125"
VB-8
   General Radio
   3200-5908
$105.00 call for rfq $35.00
Details at
bottom of page
      0.092"       Figure VB-8,
Holes are 0.875" center to center
Holes are 0.187" diameter
for models: M20, W20
Warburton Franki
VBT-8
   General Radio
$102.00
$34.00
Details at
bottom of page
0.333" 0.625" 0.575" Inside:
0.125"
Outside:
0.093"
0.330" 0.281" Black E Figure VBT-12,
Holes are 0.896" center to center
Holes are 0.155" diameter
Leads 1.187", Terminals: C-0.140"
W20, W20M, W20MT, M20, W20BB
VB-10
   General Radio
   3200-5910
$93.00 call for rfq $31.00
Details at
bottom of page
              M10, W10
VBT-10
   General Radio
$93.00
$31.00
Details at
bottom of page
0.333" 0.625" 0.575" 0.092" 0.333" 0.250" Black E Figure VB-10T,
Holes are 0.875" center to center
Holes are 0.165" diameter
Lead 1.750", Terminal: C-0.156"
VB-11
   General Radio
   3200-5911
$93.00 call for rfq $31.00
Details at
bottom of page
              W10H
VBT-11
   General Radio
$87.50 call for rfq $27.50
Details at
bottom of page
0.333" 0.625" 0.575" 0.064" 0.312" 0.275" Black E Figure VB-10T,
Holes are 0.875" center to center
VBT-12
   General Radio
   3200-5912
$102.00
$34.00
Details at
bottom of page
0.333" 0.625" 0.575" 0.062" 0.330" 0.250" Black E Figure VBT-12,
Holes are 0.896" center to center
Holes are 0.155" diameter
Leads 1.187", Terminals: C-0.140"
W20H
VBT-13
   General Radio
   3200-5913
$189.00
$63.00
Details at
bottom of page
0.333" 0.625" 0.575" 0.125" 0.330" 0.281" Black E Figure VBT-14
Holes are 0.875" center to center
Holes are 0.165" diameter
Lead 1.312", Terminal: C-0.140"
W30
VBT-14
   General Radio
   3200-5914
$189.00
$63.00
Details at
bottom of page
0.333" 0.625" 0.575" 0.062" 0.330" 0.250" Black E Figure VBT-14
Holes are 0.875" center to center
Holes are 0.165" diameter
Lead 1.187", Terminal: C-0.140"
W30H

Variable Transformer Brushes
General Radio, Powerstat, Staco Energy Products, Superior Electric, Variac, Weschler

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808-0124-S assembly   Staco A4562 assembly
Part Price
Retip your old
assembly or
exchange discount
Brass Carbon Material Notes
Thickness Width Length Thickness Width Length
808-0124-S
   Staco
$125.00
$42.50
Details at
bottom of page
0.500" 0.500" 0.500" 0.077" 0.500" 0.218" Black E Holes are 0.875" center to center
Holes are 0.150" x 0.225" oval
1520, J401
812-0545
   Staco
$51.00
$17.00
Details at
bottom of page
0.500" 0.855" 0.500" 0.170"
tapers to
0.125"
0.600" 0.218" Graphite G Holes are 0.875" center to center
Holes are 0.150" x 0.225" oval
StacoA4562
   Staco
   A4562
$60.00
$20.00
Details at
bottom of page
0.304" diameter 0.670" 0.125"
tapers to
0.092"
0.209" 0.281" Black E Holes are 0.680" center to center
Holes are 0.142" diameter

Variac Brush Assembly Retip Service

We are able to replace the carbon tip(s) of Variac brush assemblies for 1/3 of the cost of a new assembly.

1. Send in your old variac brush assebly.
2. We will remove the old carbon and adhesive and install new carbon to the original dimensions with conductive silver epoxy.