Single Row Terminal Blocks
A38 & B38
Dimensions
Inches (Millimeters)
A38
Specifications
A38:
30A, 600V
B38:
50A, 300V
Center Spacing:
0.437” (11.10mm)
Wire Range:
A38: #10-22 AWG Cu; B38: #8-16 AWG
Screw Size:
#8-32 zinc-plated steel
A389306
Torque Rating:
A38: 9 lb-in; B38: 15 lb-in for #8, 9 lb-in for #6
Base:
A38 Only: Standoffs standard for easy flux washing
Distance Between Barriers:
0.378” (9.60mm)
Recommended PCB Hole Diameter (A38):
0.076” (1.93mm)
Operating Temperature:
105°C
(221°F)
max to -40°C (-40°F)
Molded Material:
Black, UL Rated 94V0 Thermoplastic
Breakdown Voltage:
5000V
Agency Information:
UL File E62622, CSA File 47235; CE Certified
MOUNTING ENDS ONLY
A
Mounting
Centers
“A”
Dimension Length
BARRIER ENDS
ONLY
“A”
Dimension Length
Poles
B38
B384404
02
03
04
05
06
07
08
09
10
11
12
13
14
15
16
1.31
1.75
2.19
2.62
3.06
3.50
3.93
4.37
4.81
5.24
5.68
6.12
6.56
6.99
7.43
1.67
2.10
2.54
2.98
3.41
3.85
4.29
4.72
5.16
5.60
6.04
6.47
6.91
7.35
7.78
0.93
1.37
1.81
2.25
2.68
3.12
3.56
3.99
4.43
4.87
5.30
5.74
6.18
6.61
7.05
Dimensions in inches. To convert to millimeters, multiply by 25.4.
A38 & B38
Single Row Terminal Blocks
Part Numbering System
Family
Terminal Style
Base/End
Poles
Screw Options
Options
A
3
8
1
- handwired*
2
- printed circuit
7
- extended wire wrap
9
- 0.250” QC*
1
- flat base, mount
end
2
- flat base, barrier
end
3
- insulator base**
mount end
4
- insulator base**
barrier end
02
to
16
Blank
- standard
screw (steel zinc-
plated, philslot BHMS)
04
- brass, nickel-
plated, philslot BHMS
07
- steel, SEMS zinc-
plated philslot screw
L1
to
L6
marking
options (pg 25)
Covers
- (pg 26)
Family
Terminal Style
Base/End
Poles
Screw Options
Options
B
3
8
3
- screw terminal (#6-32
screw top & bottom)
4
- stud (#8-32 screw
top, #6-32 stud bottom)
5*
- double stud (#6-32
stud top & bottom)
*C360 Copper Alloy (bright tim plate)
4
- insulator base,
barrior end
9
- insulator base,
mount end
02
to
16
Blank
- standard
screw (steel zinc-
plated, philslot BHMS)
34**
- #6-32 nickel-
plated brass philslot
BHMS
**Note: 34 screws only available with
“3” terminal style
L1
to
L6
marking
options (pg 25)
Covers
- (pg 26)
A38 Terminal Styles
Inches (Millimeters)
Wire ready screws standard
B38 Terminal Styles
Screw Options
(Bulk ordering part numbers are in parentheses)
22
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Single Row Terminal Blocks
Effective December 2017
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Publication No. 10682 — BU-MC17075
December 2017
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