Specification

SPECIFICATIONS
Rating: GTB-406 – 45A, 600V*
GTB-408 – 30A, 600V*
Center Spacing: .562" or 9/16" (14.28 mm)
Wire Range: #8-#22 AWG CU
Screw Size: GTB-406 – #10-#32 philslot screws
GTB-408 – #8-#32 philslot screws
Torque Rating: #8 screws – 16 in-lb.; #10 screws – 20 in-lb.
Distance Between Barriers: .41" (10.5 mm)
Mounting: GTB-406 – #10 screws; GTB-408 – #8 screws
Operating Temperature: 130 °C (226 °F) max., -40 °C (-40 °F) min.
Material: Molded base: Black, UL rated 94V0 thermoplastic
Terminal plating: Tin over brass; Screws: Zinc plated steel
Breakdown Voltage: 7500V
Agency Information: UL/CSA; IEC Compliance; CE Certified
* Max. rating shown; some options may be rated lower - consult factory.
Series GTB-406 & GTB-408
Double Row Terminal Blocks
DATA SHEET
GTB-406 & GTB-408 Double Row Terminal Blocks
DS-0018
Gardner Bender l Milwaukee, WI 53209 l www.gardnerbender.com l Questions or Comments 800.624.4320 l GAR_TL_070_1216
Poles A
(inches)
B
(inches)
02 2.13 1.69
03 2.69 2.25
04 3.25 2.81
05 3.81 3.37
06 4.37 3.94
07 4.94 4.50
08 5.50 5.06
09 6.06 5.62
10 6.62 6.19
11 7.18 6.75
12 7.75 7.31
13 8.31 7.87
14 8.87 8.44
15 9.43 9.00
16 9.99 9.56
17 10.56 10.12
18 11.12 10.68
19 11.68 11.25
20 12.24 11.81
21 12.80 12.37
22 13.37 12.93
23 13.93 13.50
24 14.49 14.06
Dimensions in inches. To convert
to millimeters, multiply by 25.4.
GTB-408
GTB-406
.22
(5.6)
.56
(14.2)
.56
(14.2)
.412
(10.4)
.21dia.
(5.3)
1.33
(33.8)
.90
(22.8)
.81
(20.5)
.50 (12.7)
A
B
8-32 binding head screw - GTB-408
10-32 binding head screw - GTB-406
.33 (8.4)
GTB-406 & GTB-408
Inches (mm)