Brochure

43
5/98
© 1998 Square D All Rights Reserved
Class 8810 AC reversing two speed starters combine the functions of reversing and speed selection in one controller. The units
are electrically and mechanically interlocked, and include motor running overcurrent protection. Typical applications include
conveyors, drilling and tapping machines, and cooling tower fans. Many of these applications also require the special relay features.
Typical Elementray Diagrams
Thermal Units
Thermal units should be ordered separately. See Thermal Unit
Selection Index. Do not use horsepower rating(s) for
thermal unit selection. All three phase two speed magnetic
starters require six (6) thermal units, three per speed. Use
nameplate FLC’s (Full Load Currents) from motor nameplate.
Class 8810 – Reversing – 50-60 Hertz – 600 Volts Maximum
Type
of Motor
NEMA
Size
Maximum Polyphase Ratings Reversing In One Speed Only Reversing In Both Speeds
Constant
Horsepower
Motors
Constant Torque
or Variable
Torque Motors
General
Purpose
Enclosure
NEMA Type 1
Dusttight and
Driptight Industrial
Use Enclosure
NEMA Type 12
(Type 3 and 3R)f
Open
Type
General
Purpose
Enclosure
NEMA Type 1
Dusttight and
Driptight Industrial
Use Enclosure
NEMA Type 12
(Type 3 and 3R)f
Open
Type
200 V 230 V 460-575 V 200 V 230 V 460-575 V Typea Typea Typea Type Type Type
Single Winding
Constant
Horsepower
0 2 2 3 . . . . . . . . . SBG-21 SBA-21 SBO-21 SBG-31 SBA-31 SBO-31
1 557
1
⁄
2
. . . . . . . . . SCG-21 SCA-21 SCO-21 SCG-31 SCA-31 SCO-31
27
1
⁄
2
10 20 . . . . . . . . . SDG-21 SDA-21 SDO-21 SDG-31 SDA-31 SDO-31
3 20 25 40 . . . . . . . . . SEG-21 SEA-21 SEO-21 SEG-31 SEA-31 SEO-31
4 30 40 75 . . . . . . . . . SFG-21 SFA-21 SFO-21 SFG-31 SFA-31 SFO-31
5 60 75 150 . . . . . . . . . SGG-21 SGA-21 SGO-21 SGG-31 SGA-31 SGO-31
Single
Winding
Constant
Torque or
Variable Torque
0 . . . . . . . . . 3 3 5 SBG-22 SBA-22 SBO-22 SBG-32 SBA-32 SBO-32
1 . . . . . . . . . 7
1
⁄
2
7
1
⁄
2
10 SCG-22 SCA-22 SCO-22 SCG-32 SCA-32 SCO-32
2 . . . . . . . . . 10 15 25 SDG-22 SDA-22 SDO-22 SDG-32 SDA-32 SDO-32
3 . . . . . . . . . 25 30 50 SEG-22 SEA-22 SEO-22 SEG-32 SEA-32 SEO-32
4 . . . . . . . . . 40 50 100 SFG-22 SFA-22 SFO-22 SFG-32 SFA-32 SFO-32
5 . . . . . . . . . 75 100 200 SGG-22 SGA-22 SGO-22 SGG-32 SGA-32 SGO-32
Constantj
Horsepower
0 2 2 3 . . . . . . . . . SBG-23 SBA-23 SBO-23 SBG-33 SBA-33 SBO-33
1 557
1
⁄
2
. . . . . . . . . SCG-23 SCA-23 SCO-23 SCG-33 SCA-33 SCO-33
27
1
⁄
2
10 20 . . . . . . . . . SDG-23 SDA-23 SDO-23 SDG-33 SDA-33 SDO-33
3 20 25 40 . . . . . . . . . SEG-23 SEA-23 SEO-23 SEG-33 SEA-33 SEO-33
4 30 40 75 . . . . . . . . . SFG-23 SFA-23 SFO-23 SFG-33 SFA-33 SFO-33
5 60 75 150 . . . . . . . . . SGG-23 SGA-23 SGO-23 SGG-33 SGA-33 SGO-33
Constantj
Torque or
Variable Torque
0 . . . . . . . . . 3 3 5 SBG-24 SBA-24 SBO-24 SBG-34 SBA-34 SBO-34
1 . . . . . . . . . 7
1
⁄
2
7
1
⁄
2
10 SCG-24 SCA-24 SCO-24 SCG-34 SCA-34 SCO-34
2 . . . . . . . . . 10 15 25 SDG-24 SDA-24 SDO-24 SDG-34 SDA-34 SDO-34
3 . . . . . . . . . 25 30 50 SEG-24 SEA-24 SEO-24 SEG-34 SEA-34 SEO-34
4 . . . . . . . . . 40 50 100 SFG-24 SFA-24 SFO-24 SFG-34 SFA-34 SFO-34
5 . . . . . . . . . 75 100 200 SGG-24 SGA-24 SGO-24 SGG-34 SGA-34 SGO-34
j Prices and Type numbers shown for three phase, separate winding motor starters apply only when motor windings are wye connected. When motor windings are connected open delta use
the prices shown for consequent pole motor starters.
q Specify the speed which requires reversing by adding an L (low) or an H (high) after the type number, e.g. A Class 8810 Type SBG-21 with reversing in low only would be ordered as a Class
8810 Type SBG-21L.
f NEMA Type 12 enclosures may be field modified for outdoor applications. For details refer to Class 9991.
Stop
High
4
4
T3T2T1
COM
COM
Motor
1.2 or 3 OLR
Contacts
1.2 or 3 OLR
Contacts
L2
L1
1
3
2
L3
T13
High
High
Low
Low
Stop
3 Wire
Control
Alarm
(If supplied)
T12
T11 T13 T2
T12 T1 T3
OL
Speed
Low
High
L1
T1
T11
L2
T2
T12
L3
T3
T13
Open
T11, T12, T13
T1, T2, T3
5
5
2
4
3
1
Low
5
H
High
L
2
H
3
L
LLL
L1
L2
L3
L
OL
H
H
HH
OL OL OL OL OL OL
T1
T11
T2 T3 T11 T12 T13
1
OL
How to Order:
To Order Specify: Catalog Number
• Class Number
• Type Number
• Coil Voltage Code
• Form(s)
Class Type Coil
Voltage
Code
Form(s)
8810 SCO8 VO6 P1S
AC Reversing Two Speed Magnetic Starters
Line Voltage Type — with Melting Alloy Overload Relays – Class 8810