High Power Ready-to-Use DIN Rail Mounted SSRs
CKR Series
Crydom CKR Series Solid State Relays were developed to offer the advantages of semiconductor switching
technology in a standard 22.5 mm industrial package. Quick and easy installation is coupled with low drive
power requirements and efficient, reliable power SCR output. This compact new design offers up to 30 Arms
in ambient temperatures of 25ºC.
Mounting clip incorporates tabs for screw mounting to panel
Box Clamp terminals
Bracket fits all standard 35 mm DIN rail profiles
LED input status indicator
FEATURES
PART NUMBER NOMENCLATURE
IMPORTANT CONSIDERATIONS
Mounting Air Gap (A)
Earth Bonding (Grounding)
To achieve maximum ratings, there must be a minimum spacing of 0.8 in (20 mm) between
the devices (horizontally) and of 3.15 in (80 mm) measured between DIN clip tabs (vertically).
The CKR heat sink is equiped with an earth bonding screw as is required for Class 1
Protection, in accordance with EN 60950 (VDE 0804). Recommended torque is 20 in-lbs
(2.2 Nm).
Required for valid part number
For options only and not required for valid part number
CKR 10 -10E P24D
Series
Operational Current
10: 10 Amps
20: 25 Amps
30: 30 Amps
Overvoltage Protection
Blank: Not Included
P: Included
Control Voltage
D: 4-32 VDC
A: 90-280 VAC
Switching Mode
Blank: Zero Voltage Turn-On
-10: Random Turn-On
Operational Voltage
24: 24-280 VAC
48: 48-530 VAC
60: 48-660 VAC
Input Range
Blank: Standard Input
E: 18-36 VAC
Rev: 080111
MOUNTING INSTRUCTIONS
Mounting on DIN Rail
Mounting on Panel
Please read all installation instructions before using CKR Series SSRs.
Choose one of the two mounting options and follow the instructions below.
Locate the panel section on which the CKR SSR will be mounted on.
DIN clip includes tabs for this type of mounting. Tab holes have a
diameter of 4.5 mm. You will need two screws (not included) no
larger than that to mount the SSR onto panel.
Align SSR tabs with panel surface and screw both top and bottom
sides. Recommended torque is 12 in-lbs (1.36 Nm).
Locate rail and align with non moveable end of CKR DIN clip.
Using reasonable force, push CKR in the direction of the arrow
shown in fig.1.
For removal pull release tag in direction of arrow using blade of
screwdriver and pull it away from DIN rail.
To install
on DIN Rail
To remove
from DIN Rail
20
30
10
20 40 60 80
Caution
High Temperature
Current Rating 20A @ 25°C
!
20
30
10
20 40 60 80
Caution
High Temperature
Current Rating 20A @ 25°C
!
fig.1 Mounting on DIN Rail
Wire Size
Maximum wire size of AWG #10 (5.3 mm2) for input and output terminals.
Connections
Ensure that wires ends are stripped to a minimum length of 0.4 in (10 mm).
Recommended Screw Torque Range
5-6 in-lbs (0.6-0.7 Nm) on input and 10-15 in-lbs (1.1-1.7 Nm) on output terminations.
The following deating curves must be observed before installation.
DERATING CURVES (B)
Output Current (Arms)
30
25
20
15
10
5
0
20 40 60 80
Ambient Temperature (ºC)
CKRxxx20xxxx
CKRxxx10xxxx
CKRxxx30xxxx
(A)
(B)
The air gap is the clearance distance adjacent to either side of the relay or assembly measured
to the next closer relay or assembly.
100% Duty Cycle.
Rev: 080111
