Brochure

27
5/98
© 1998 Square D All Rights Reserved
AC MAGNETIC REVERSING
CONTACTORS CLASS 8702
General Information
Class 8702 Type S reversing magnetic contactors
are used for starting, stopping, and reversing AC
motors where overload protection is separately
provided. Class 8702 reversing contactors are
available in NEMA Sizes 00-7. Class 8702
reversing contactors consist of two Class 8502
contactors mechanically and electrically
interlocked. Open type devices, Sizes 0-5 are
available in either horizontal or vertical
arrangements. Sizes 00, 6, and 7 are available as
horizontal only. Enclosed devices, Size 00-7 use
horizontally arranged components. Type S
reversing contactors are designed for operation at
600 Volts AC, 50-60 Hertz.
AC MAGNETIC REVERSING STARTERS
CLASS 8736
General Information
Class 8736 Type S reversing magnetic starters
are used for full voltage starting, stopping, and
reversing AC squirrel cage motors. Class 8736
reversing starters are available in NEMA Sizes
00-7. Class 8736 reversing starters consist of one
Class 8502 contactor and one Class 8536 starter
mechanically and electrically interlocked. Open
type devices, Sizes 0-5 are available in either
horizontal or vertical arrangements. Sizes 00, 6,
and 7 are available as horizontal only. Enclosed
devices use horizontally arranged components.
Motor overload protection is provided by melting
alloy type thermal overload relays. Type S starters
are designed for operation at 600 Volts AC, 50-60
Hertz.
Overload Relays
Class 8736 Type S Size 00-6 reversing starters
are provided with melting alloy thermal overload
relay as standard. Interchangeable thermal units
are available in standard trip Sizes 00-6, quick trip
Sizes 00-4, and slow trip Sizes 00-3. Single phase
starters use one thermal unit, three phase
starters use three thermal units.
Class 8736 Size 7 starters are provided with solid
state overload Motor Logic, which has selectable
trip Class 10/20, Ground Fault Detection, and
Communication capabilities for future
enhancements. The solid state overload relay is
ambient insensitive and features phase loss,
phase unbalance and over-current protection.
MOTOR LOGIC™ Solid State Overload Relay
(SSOLR)
Solid state overload relays are available for Sizes
00-7 starters. These ambient insensitive overload
relays provide phase loss protection, phase
unbalance protection and LED power indicator.
For additional information see the Class 9065
catalog section. To order Type S starters with solid
state overload relays, see Factory Modification
(FORMS).
Bimetallic overload relays are also available for
Sizes 0-6. Ambient Compensated and Non-
compensated versions are supplied with manual
and automatic reset, trip current adjustment, and
an alarm contact on Sizes 0-2. For additional
information, see the Class 9065 catalog section.
To order Type S starters with bimetallic overload
relays, see Factory Modifications (FORMS).
Enclosures
Class 8702 and 8736 reversing magnetic
contactors and starters are available in the
following enclosures:
• NEMA Type 1 General Purpose Enclosure
• NEMA Type 4 & 4X Watertight and Dusttight
• NEMA Type 7 & 9 Bolted and Spin-Top for
Hazardous Locations
• NEMA Type 12 Dusttight and Driptight for
Industrial Use
The NEMA Type 4 and 4X stainless steel
enclosure (Sizes 0-5) has a brushed finish. For an
electropolished finish, specify Form G16 and add
15% to the price of the standard device. Sizes 6
and 7 are painted sheet steel and are rated NEMA
Type 4 only.
Also, NEMA Type 12 devices are available UL
Listed for use in Class II, Division 2, Group G and
Class III, Divisions 1 and 2 locations. Request
Form G21, no additional charge.
Separate enclosures are available, see
Class 9991.
Full Voltage Reversing Contactors and Starters — NEMA
Application Data – Class 8702, 8736
Size 00, 0, 1
Reversing Contactor
Size 00, 0, 1
Reversing Starter