Brochure

33
5/98
© 1998 Square D All Rights Reserved
Power Contact Ratings
All contactors are rated in accordance with NEMA
standards. The ratings shown in the tables on
Pages 29-32 are for normal service. For complete
data on power contact ratings, refer to Class 8536
Section.
Maintenance of Equipment
Class 9998 repair parts kits are available for all
Class 8702 contactors and Class 8736 starters.
Service bulletins with a complete list of
replaceable parts are supplied with all devices.
See Page 15.
Control Transformer Selection
The following table gives the proper size control
transformer to be used with a given reversing
device, with or without additional auxiliary
contacts or timer. For factory addition of control
transformers, see Factory Modifications (Forms)
section.
Auxiliary Units
The table below shows the maximum number of
auxiliary units (in addition to the holding circuit
and interlocking contacts) that can be added to
either the forward or reverse contactor or starter.
Factory Installed Auxiliary Contacts
Additional auxiliary contacts may be factory or
field added to any Type 3 contactor or starter. See
table above for maximum number of auxiliary
units. The table below lists the Form designations
for factory installed auxiliary contacts. See Class
9999 for field modification kits.
NEMA Size Type
No. of
Poles
Transformers
Class 9070
Type
0, 1 & 2 SB, SC & SD Any T100 or GO2
3SE
3 T1500 or GO3
4 & 5 T300
4 SF Any T300
5 SG Any T500
6 & 7 SH & SJ Any See Page 16
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
interlocking contacts).
00
(SA)
2 or 3
2 single circuit auxiliary contacts
(N.O. or N.C.)
0, 1 & 2
(SB, SC
& SD)
2 or 3
4 single circuit auxiliary contactsq
(N.O. or N.C.)
1 single circuit auxiliary contact
(N.O. or N.C.) plus 1 attached timer
(ON or OFF delay).
4
2 single circuit auxiliary contacts
(N.O. or N.C.)
3, 4, 5, 6, & 7
(SE, SF, SG,
SH, & SJ)
Any
2 single circuit auxiliary contacts
(N.O. or N.C.)
1 single circuit auxiliary contact plus
1 attached timer (ON or OFF delay).
q When adding 4 external auxiliary contacts to one Size 0 or 1
contactor, remove one of the return springs.
Example: X 1O1O
Number of N.C. auxiliary contacts on right hand (Reverse) contactor.
Number of N.O. auxiliary contacts on right hand (Reverse) contactor.
Number of N.C. auxiliary contacts on left hand (Forward) contactor.
Number of N.O. auxiliary contacts on left hand (Forward) contactor.
Basic Form Designation.
Additional Auxiliary Contacts on R.H. Contactor (Reverse Contactor)
Standard
(No Additional
Auxiliary Contacts)
1 N.O. 1 N.C. 2 N.O. 1 N.O.-1 N.C. 2 N.C.
Additional
Auxiliary
Contacts on
L.H.
Contactor
(Forward
Contactor)
Standard
(No Additional
Auxiliary Contacts)
X0010 X0001 X0020 X0011 X0002
1 N.O. X1000 X1010 X1001 X1020 X1011 X1002
1 N.C. X0100 X0110 X0101 X0120 X0111 X0102
2 N.O. X2000 X2010 X2001 X2020 X2011 X2002
1 N.O.-1 N.C. X1100 X1110 X1101 X1120 X1111 X1102
2 N.C. X0200 X0210 X0201 X0220 X0211 X0202
Full Voltage Reversing Contactors and Starters — NEMA
Application Data – Class 8702, 8736