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23-21
schneider-electric.us
CAD
Industrial Relays
Refer to Catalog 8501CT0101
TeSys™ D IEC Style Contact Blocks and Accessories
LADT
LA6DK
LAD4
Table 23.62: Time Delay Auxiliary Contact Blocks
Number and
Type
of Contacts
Maximum
Number
per Device
Time Delay
Type
Termination
Type
Range
Catalog
Number
Front Mounting
1 N.C. and 1 N.O. 1
On-Delay
Screw Clamp
0.1–3 s
[6]
LADT0
0.1–30 s LADT2
10–180 s LADT4
1–30 s [7]
LADS2
Spring Terminal
0.1–3 s
[6]
LADT03
0.1–30 s LADT23
10–180 s LADT43
1–30 s [7]
LADS23
Off-Delay
Screw Clamp
0.1–3 s
[6]
LADR0
0.1–30 s LADR2
10–180 s LADR4
Spring Terminal
0.1–3 s
[6]
LADR03
0.1–30 s LADR23
10–180 s LADR43
NOTE: For Lockout Cover, see page 7 of catalog 8501CT0101.
Table 23.63: Mechanical Latch Blocks
[8]
Unlatching Control
Maximum Number per Device
Catalog
Number[9]
Front Mounting
Manual or electrical 1 LAD6K10
Table 23.64: Coil Suppressor Modules
These modules clip onto the right hand side of the control relay and the electrical connection is instantly made.
Adding an input module is still possible.
RC Circuits (Resistor-Capacitor)
•
Effective protection for circuits highly sensitive to “high frequency” interference.
•
Voltage limited to 3 Uc maximum and oscillating frequency limited to 400 Hz maximum.
•
Slight increase in drop-out time (1.2 to 2 times the normal time).
For Mounting On: Operational Voltage Catalog Number
CAD (Vac)
24 to 48 Vac
LAD4RCE
110 to 240 Vac LAD4RCU
Varistors (Peak Limiting)
•
Protection provided by limiting the transient voltage value to 2 Uc maximum.
•
Maximum reduction of transient voltage peaks.
•
Slight increase in drop-out time (1.1 to 1.5 times the normal time).
CAD (Vac)
24 to 48 Vac
LAD4VE
50 to 127 Vac LAD4VG
110 to 250 Vac LAD4VU
Bidirectional Peak Limiting Diode
•
Protection provided by limiting the transient voltage value to 2 Uc maximum.
•
Maximum reduction of transient voltage peaks.
CAD (Vac)
24 Vac
LAD4TB
72 Vac LAD4TS
Dimensions (in./mm)
CAD (Vac Coil)


b
c
c1
c2
c3
1.770.49
(LAD-8)
45
12.5
CAD (Vdc Coil or Low Consumption Vdc Coil)


b


c
c1
c2
c3
1.77
45
Table 23.65: Coil Voltage Codes
Volts (Vac/Vdc)
24 32/36 42/48 60/72 100 110/127 220/240
Code B C E EN K F M
Table 23.66: Dimensions (See Figures at Left)
CAD (Vac Coil)
in. (mm)
CAD (Vdc Coil or Low
Consumption Vdc Coil)
in. (mm)
32
50
323
503
32
50
323
503
b
3.03
(77)
3.90
(99)
b
3.03
(77)
3.90
(99)
c
Without cover or add-on
blocks
3.31
(84)
3.31
(84)
c
Without cover or add-on
blocks
3.66
(93)
3.66
(93)
With cover, without add-on
blocks
3.39
(86)
3.39
(86)
With cover, without add-on
blocks
3.74
(95)
3.74
(95)
c1
with LADN or C (2 or 4
contacts)
4.61
(117)
4.61
(117)
c1
with LADN or C (2 or 4
contacts)
4.96
(126)
4.96
(126)
c2 with LA6DK10
5.08
(129)
5.08
(129)
c2 with LA6DK10
5.43
(138)
5.43
(138)
c3
with LADT, R, S
5.39
(137)
5.39
(137)
c3
with LADT, R, S
5.75
(146)
5.75
(146)
with LADT, R, S and
sealing cover
5.55
(141)
5.55
(141)
with LADT, R, S and sealing
cover
5.91
(150)
5.91
(150)
23
RELAYS AND TIMERS
[6] With extended scale from 0.1 to 0.6 s.
[7] With switching time of 40 ms ± 15 ms between opening of the N.C. contact and closing of the N.O. contact.
[8] Power should not be simultaneously applied or maintained to the mechanical latching block and the CAD relay. The duration of the control signal to the mechanical latching block and the
CAD relay should be greater than or equal to 100 ms.
[9] Complete the catalog number by adding the coil voltage code from
Table 23.65. For example, LADK10B.
6/20/2017