Brochure

15
5/98
© 1998 Square D All Rights Reserved
Auxiliary Units
Auxiliary contacts, power poles, and timer
attachments can be added by the factory or in the
field on all Type S starters and contactors. The
table below shows the maximum number of
auxiliary units (in addition to the holding circuit
contact) that can be added to a given size starter
or contactor. In addition, it is possible to add a
second internal contact on NEMA Size 0, 1, and 2
contactors and starters.
Factory Installed Auxiliary Contacts
Additional auxiliary contacts may be factory or
field added to any Type S contactor or starter. See
table above for maximum number of auxiliary
units. The table below lists the Form designations
for factory installed electrical contacts.
See Class 9999 for field modification kits.
Form Number of Additional Auxiliary
Contacts
When ordering factory installed auxiliary contacts,
the Form designations listed should be used.
Control Circuit Transformers
Class 9070 Type T machine tool control
transformers are normally used when it is
necessary to provide a lower voltage to the control
circuit. This transformer with fused protection may
be ordered from the factory by specifying Form
F4T. The addition of a transformer often requires
the use of a larger enclosure. The table below
shows the transformer selection for given sized
starters and contactors with or without auxiliary
units.
Power Poles
Single or double circuit power pole adders may be
factory or field installed on 2 and 3 pole Type S
contactors and starters. The table below lists the
Form designation for factory installed power pole
adders. Only one power pole adder may be
installed per contactor.
NEMA
Size
Type
No. of
Poles of
Basic
Contactor
Maximum Number of External
Auxiliary Units (In addition to
holding circuit contact)
00 SA 2-3
4 single circuit auxiliary contacts (N.O. or N.C.)
if second internal auxiliary contact is not used.
0, 1 & 2
SB
SC
SD
1, 2 or 3
4 single circuit auxiliary contacts (N.O. or N.C.)
3 single circuit auxiliary contacts (N.O. or N.C.)
plus 1 attached timer (ON or OFF delay).
2 single circuit auxiliary contacts (N.O. or N.C.)
plus 1 power pole adder (1 or 2 poles, N.O. or
N.C.).
1 attached timer (ON or OFF delay) plus 1
power pole adder (1 or 2 poles, N.O. or N.C.)
plus 1 auxiliary contact.
4 or 5
2 single circuit auxiliary contacts (N.O. or N.C.)
1 timer attachment plus 1 auxiliary contact.
3, 4 & 5
SE
SF
SG
2-5
(Size 3 & 4)
4 single circuit auxiliary contacts (N.O. or N.C.)
2 single circuit (Sizes 3 & 4) or 3 single circuit
(Size 5) auxiliary contacts plus 1 attached timer
(ON or OFF delay).
2-3
(Size 5)
2 single circuit auxiliary contacts (N.O. or N.C.)
plus 1 NEMA Size 0-1 or Size 2 power pole
adder (1 or 2 poles, N.O. or N.C.)
6 & 7
SH
SJ
2-3
4 single circuit auxiliary contacts (N.O. or N.C.)
3 single circuit auxiliary contacts (N.O. or N.C.)
plus 1 attached timer (ON or OFF delay).
2 single circuit auxiliary contacts (N.O. or N.C.)
plus 1 NEMA Size 0-1 or Size 2 power pole
adder (1 or 2 poles, N.O. or N.C.)
Number of N.O.
Contacts
Number of N.C.
Contacts
Form Number
0
1 X01
2 X02
3 X03
4 X04
1
0 X10
1 X11
2 X12
3 X13
2
0 X20
1 X21
2 X22
3 0 X30
3 1 X31
4 0 X40
NEMA
Size
Type
No.
of
Poles
Auxiliary Units
Transformer
Class 9070
Type
0 & 1
SB
SC
1-3
With max. of 2 auxiliary
contacts
T50
With timer and maximum of
1 auxiliary contact
With 3 or 4 auxiliary
contacts with timer and 2 or
3 auxiliary contacts
T100
0 & 1
SB
SC
4 & 5
With or without auxiliary
contacts or timer
T100
0 & 1
Mechanically
Interlocked
Devices
SB
SC
1-5 With or without attachments T100
2 SD 2-5 With or without attachments T100
3 SE 2-3 With or without attachments GO3j
3 SE 4 & 5 With or without attachments T300
4 SF 2-5 With or without attachments T300
5 SG 2-3 Any T500
6, 7
SH,
SJ
2-3 Any u
j Class 8502 & 8536 Type S, Size 3 standard NEMA Type 1, 4 and 12
enclosures have space for field mounting a fused control circuit
transformer. A Class 9070 Type GFT3 transformer and fuse block kit
is available for Form F4T requirements in a NEMA Type 1 enclosure.
NEMA Type 4 and 12 enclosures utilize a Class 9070 T150
transformer and a Class 9999 SF4 fuse block.
u A Class 9070 transformer is an integral part of the Size 6 and Size 7
control circuit providing 120 volt control circuit voltage as standard.
Type NEMA Size
Class 9999
Type
Form
Designation
1 N.O.
0, 1 SB6 Y428
2 SB11 Y436
1 N.C.
0, 1 SB7 Y429
2 SB12 Y437
1 N.O., 1 N.C.
0, 1 SB8 Y435
2 SB13 Y440
2 N.O.
0, 1 SB9 Y430
2 SB14 Y438
2 N.C.
0, 1 SB10 Y434
2 SB15 Y439
Full Voltage Contactors and Starters — NEMA
Application Data – Class 8502, 8536