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ND43__21
Powerex, Inc., 173 Pavilion Lane, Youngwood, Pennsylvania 15697 (724) 925-7272
www.pwrx.com
POW-R-BLOK TM
Dual SCR Isolated Module
210 Amperes / Up to 2000 Volts
Description:
OUTLINE DRAWING
M K
T - M8 THD. (3 TYP.)
U - DIA. (4 TYP.)
Powerex Dual SCR Modules are
designed for use in applications
G J
K1
G1
G2
K2
A
K
AK
N
requiring phase control and isolated
packaging. The modules are isolated
for easy mounting with other
components on a common heatsink.
has been tested and
POW-R-BLOK
V
C
B
P
A
Q
S
W
W
TM
recognized by the Underwriters
Laboratories.
D E
K1
G1
G2
K2
A
K
SCR 1
SCR 2
R
L
AK
H
F
ND43__21
Dual SCR Isolated
POW-R-BLOK TM Module
210 Amperes / Up to 2000 Volts
Features:
Electrically Isolated Heatsinking
Aluminum Nitride Insulator
Compression Bonded Elements
Metal Baseplate
Low Thermal Impedance
for Improved Current Capability
Quick Connect Gate Terminal
with Provision for Keyed Mating
CONNECTION DIAGRAM
ND43 Outline Dimensions
Ordering Information :
Plug
UL Recognized
Module
POW-R-BLOK
Dimension
A
B
C
D
E
F
Inches
4.57
3.66
3.15
2.17
2.06
2.07
Millimeters
116
93
80.0
55.1
52.3
52.0
Select the complete eight digit
module part number from the table
below.
Example: ND432021 is a 2000Volt,
210 Ampere Dual SCR Isolated
TM
Benefits:
No Additional Insulation
Components Required
Easy Installation
No Clamping Components
Required
Reduce Engineering Time
G
H
J
K
L
M
1.97
1.90
1.50
1.38
1.26
1.122
50.0
48.3
38.1
35.0
32.0
28.5
Type
ND43
Voltage
Volts
(x100)
08
10
12
14
Current
Amperes
(x 10)
21
Applications:
Bridge Circuits
AC & DC Motor Drives
Battery Supplies
Power Supplies
Large IGBT Circuit Front Ends
N
P
Q
R
S
T
U
V
W
.71
.57
.625
.394
.350
M8 Metric
.250 Dia.
.110 x .032
.12
18.0
14.5
15.9
10.00
8.9
M8
6.35 Dia.
2.8 x 0.8
3.0
16
18
20
Note: Dimensions are for reference only.
Revision Date: 05/17/2010
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