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Square D > On-line Catalog > Products > NEMA Contactors and Starters > Accessories: Auxiliary Contacts

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Accessories

Auxiliary Contacts

Class 9999

Auxiliary Contacts for Manual and Magnetic Contactors and Starters

Internal Contacts

Class 9999 Type SX11 internal contact kit is a replacement unit for the N.O. holding circuit contact supplied as standard on Type S Sizes 00–2 three phase starters and contactors. The Class 9999 Type SX12 is a replacement unit for the N.C. electrical contact which is furnished as standard on Type S, Sizes 00–2 mechanically interlocked devices (e.g., Class 8736 reversing starters). Internal contacts are also used on Class 2510 Types M & T manual starters. The internal contacts can be used for other applications as long as the electrical rating is not exceeded. See table below for electrical ratings.

External Contacts

Class 9999 Type SX6 external auxiliary contact is supplied as standard for the N.O. holding circuit contact on Type S Sizes 3–7 starters and contactors. Additional auxiliary contacts can be added to Type S contactors, starters and lighting contactors. These contacts mount on either side of the basic contactor and are available with convertible or non-convertible contacts. The contacts of the convertible version can be changed from N.O. to N.C. or vice versa in the field. The non-convertible version has fixed contacts, either N.O. or N.C.

To determine the number of auxiliary contacts which can be added to each Type S contactor or starter, refer to the Class 8536 or Class 8736 section.
Class
9999
Type
Class
9999
Type
AC Only
(35% Power Factor)
AC Only
(35% Power Factor)
120–600
NEMA
Size
External—Field Convertible
00–7
External—Non-Convertible
 00–7
Internal—Non-Convertible
 SA-SD
 00–2
a
Types SX9 and SX10 or Types SX16 and SX17 must be used together and mounted on the same side of the contactor. They are suitable for applications where it is necessary for a normally open contact to overlap a normally closed contact.
b
Types SX11 and SX12 are not applicable for use on NEMA Sizes 3 or larger. Internal contacts can also be used on Class 2510 Types M and T manual starters.
Table 16.354:
Class 8910 and 8911 Definite Purpose Contactors and Starters – Auxiliary Contacts
Class 8910 or
8911 Type
Contact
Arrangement
DPAc
DPS
Table 16.355:
Contact
Arrangement
Type of
Connector
Screw/
Quick-Connect
RO2 & RG2
RO10 Form X1
RO11 Form X1
1 N.O.
each side
RO3 & RG3
RO10 Form X2
RO11 Form X2
1 N.C.
each side
RO5 & RG5
RO12 Form X1
RO13 Form X1
1 N.O.
each side
RO6 & RG6
RO12 Form X2
RO13 Form X2
1 N.C.
each side
Table 16.356:
Discount Schedule

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Release Date: 03/31/2007
Modification Date: 04/13/2008