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© 2017 Schneider Electric
All Rights Reserved
Industrial Relays
CA2SK, CA3SK, and CA2SKE
schneider-electric.us
Refer to Catalog 8501CT0101
TeSys™ SK IEC Style Control Relays
CA2SK11G7
•
Miniature size saves space.
•
Up to 4 poles.
•
Mounts on 35 mm DIN 3 track.
Table 23.84: IEC Style Industrial Control Relays
Control Circuit Supply Consumption Type of Termination
Contact Configuration
Catalog Number
[20]
N.O. N.C.
AC 4.2 VA
Screw clamp
1 1 CA2SK11 • •
2 0 CA2SK20 • •
DC 2.2 W
1 1 CA3SK11 • •
2 0 CA3SK20 • •
LA1SK11
Table 23.85: Contact Adder Decks (for CA2SK20 only)
Type of Termination
Contact Configuration
Catalog Number
N.O. N.C.
Screw clamp
2 0
LA1SK20
1 1 LA1SK11
0 2 LA1SK02
Transient Suppressor Module dampens the voltage spike that may occur when the
relay coil is de-energized. The spike may adversely affect solid state equipment near the
relay. The transient suppressor module snaps into a cavity located in the side of the
relay. These modules can be used with CA2SK and CA3SK relays.
Table 23.86: Transient Suppressor Module
Control Circuit Voltage Catalog Number
24–48 Vac 50/60 Hz, 24–48 Vdc
LA4SKEIE
110–250 Vac 50/60 Hz, 110–250 Vdc
LA4SKEIU
Table 23.87: Coil Voltage Codes for Control Relays
Voltage
12 24 36 48 72 110 120 220 230 240 277 380 400 480
50/60 Hz —
B7
[21]
—
E7
[21]
— F7
G7
[21]
M7
[21]
P7
U7
[21]
UE7
Q7
V7
T7
[21]
DC JD BD CD ED SD — — — — — — — — —
CA2SKE20
IEC Style Alternating Relays are used to alternate the use of 2 motor circuits. When the
coil is energized the first time, one contact closes and will open when the coil is de-
energized. When the coil is energized again, the other contact will close and will open
when the coil is de-energized. The contacts from these alternators are to be used in the
control circuit of the starters that are controlling pump or compressor motors.
Table 23.88: Alternating Relays
Coil Voltage
(Voltage-Hz)
Type
24–50/60
CA2SKE20• •
[22]
Table 23.89: Contact Ratings for CA2SK, CA3SK, and CA2SKE20 Relays
AC DC
V
Inductive 35% PF Resistive 75% PF
V
Continuous
Amperes
NEMA
Rating
Make Break Continuous
Amperes
Make, Break and
Continuos Amperes
A VA A VA
120
A600
60
7200
6
720 10 10
24 3
240 30 3 60 2
480 15 1.5 110 0.8
600 12 1.2 240 0.2
Approximate Dimensions for CA2SKE Relay
2.20
56
1.06
27
2.19
56
.20
5
.14
4
nsions:
INCHES
Millimeters
#8
or
(49)
1.93
(34.5)
1.36
(68)
2.68
(45)
1.77
(58)
2.28
(4)
.16
4mm
Approvals for TeSys SK IEC Style Relays
File: E164353
CCN: NKCR
File: LR43364
Class: 3211 03
[20] Use the appropriate voltage code from Table 23.87 to complete the catalog number. For example, CA2SK11G7.
[21] Alternating relays CA2SKE available in these voltages only. No other voltages are available.
[22] Use the appropriate voltage code from Table 23.87 to complete the catalog number (for example, CAZSK11G7). Only available with voltages indicated in this table.
6/20/2017
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RELAYS AND TIMERS