Brochure

47
5/98
© 1998 Square D All Rights Reserved
Application Data for Types SB-SH
Control Transformer Selection
The following table gives the proper size control
transformer to be used with a given reversing
device, with or without additional electrical
interlocks or timer.
Form Designations for Factory Installation of Electrical Interlocks
Additional Electrical Interlocks on High Starter
Standard
(No Additional
Interlocks)
Change N.O.
Holding Circuit
Interlock to N.C.
1 N.O. 1 N.C. 2 N.O. 1 N.O.-1 N.C. 2 N.C.
Additional Electrical Interlocks
on Low Starter
Standard (No Additional
Interlocks)
X01 X02 X03 X05 X06 X07
Change N.O. Holding
Circuit Interlock to N.C.
X10 X11 X12 X13 X15 X16 X17
1 N.O. X20 X21 X22 X23 X25 X26 X27
1 N.C. X30 X31 X32 X33 X35 X36 X37
2 N.O. X50 X51 X52 X53 X55 X56 X57
1 N.O.-1 N.C. X60 X61 X62 X63 X65 X66 X67
2 N.C. X70 X71 X72 X73 X75 X76 X77
NEMA
Size
Type No. of Poles
Transformert
Class 9070 Type
0, 1 & 2 SB, SC & SD Any EO-2 or GO-2
3SE
3 EO-3 or GO-3
4 & 5 EO-4
4 SF Any EO-4
5SG Any q
6SH Any u
7SJ Any j
t If a different manufacturer’s transformer is to be used, check its
suitability for use with coil loads. See inrush and sealed VA ratings
of the contactor coil.
q Standard engineering practice for Size 5 contactors is to use a
Class 9070 Type EO-1 transformer and Class 8501 Type DO-20
control relay.
u A Class 9070 Type EO-3S2 transformer is an integral part of the
Size 6 control circuit providing 120 volt control circuit voltage as
standard on devices wired for common control.
j A Class 9070 Type EO-19-S2 transformer is an integral part of the
size 7 control circuit providing 120 volt control circuit voltage as
standard on devices wired for common control.
Maximum Number of Auxiliary Units
NEMA
Size
(Type)
No. of
Poles of
Basic
Contactor
Maximum number of auxiliary units
on each contactor, forward or
reverse, (in addition to internal
holding circuit and electrical
interlocks).
00, 0, 1
and 2
(SA, SB, SC
and SD)
2 or 3
4 single circuit external interlocks (N.O. or N.C.)
1 single circuit external interlock (N.O. or N.C.)
plus 1 attached timer (ON or OFF delay).
4 2 single circuit external interlocks (N.O. or N.C.)
3, 4, 5 and 6
(SE, SF, SG
and SH)
Any
2 single circuit external interlocks (N.O. or N.C.)
1 single circuit external interlock plus 1
attached timer (ON or OFF delay).
7 (SJ) Any Consult local Square D field office
AC Magnet Coils for AC Contactors and Starters
Devices Using
Coil
Coil
Speci-
fication
Number
Suffix Numbers (Complete coil part number consists of specification number followed by
suffix number as 31041-400-51.)
NEMA
Size
Type Poles 24 V/60 Hz
120 V/60 Hz
110 V/50 Hz
208 V/60 Hz 220 V/60 Hz
240 V/60 Hz
220 V/50 Hz
277 V/60 Hz
480 V/60 Hz
440 V/50 Hz
600 V/60 Hz
550 V/50 Hz
00 SA All 31041-400- 20 42 48 u 51 52 60 62
0 SB All 31041-400- 20 42 48 u 51 52 60 62
1 SC All 31041-400- 20 42 48 u 51 52 60 62
2SD
3 31063-409- 16 38 44 u 47 49 57 60
4-5 31063-400- 16 38 44 u 47 49 57 60
3SE
3 31074-400- 16 38 44 u 47 49 57 60
4-5 31091-400- 16 38 44 u 47 49 57 60
4 SF All 31091-400- 16 38 44 u 47 49 57 60
5 SG 3 31096-400- . . . 09 15 u 18 19 24 29
6 SH 3 31104-400-50 (all voltages)
7 SJ 3 31104-400-50 (all voltages)
u For 220 volt and 230 volt, 60 hertz applications, use 240 volt coil.
AC Multispeed Magnetic Starters
Application Data – Class 8810, 8811, 8812