M O D E L N U M B E R S
AC CONTROL
A4812
A4825
A4850
A4875
A4890
D C CONTROL
D4812
D4825
D4850
D4875
D4890
OUTPUT SPECIFICATIONS
Operating Voltage (47-63 Hz) [Vrms]
80-530
80-530
80-530
80-530
80-530
Max. Load Current
[Arms]
12
25
50
75
90
Min. Load Current, [mArms]
40
40
40
40
40
Transient Overvoltage [Vpk]
800
800
800
800
800
Max. Surge Current, (16.6ms) [Apk]
140
250
625
1000
1200
Max. On-State Voltage Drop @ Rated Current [Vpk]
1.7
1.7
1.7
1.7
1.7
Thermal Resistance Junction to Case (R
JC) [C/W]
1.48
1.02
0.63
0.31
0.28
Maximum I 2 t for Fusing, (8.3 msec.) [A 2sec]
81
260
1620
4150
6000
Max. Off-State Leakage Current @ Rated Voltage [mArms]
10
10
10
10
10
Min. Off-State dv/dt @ Max. Rated Voltage [V/sec]
500
500
500
500
500
Max. Turn-On Time
1/2 Cycle (DC Input), 10.0 msec (AC Input)
Max. Turn-Off Time
1/2 Cycle (DC Input), 40.0 msec (AC Input)
Power Factor (Min.) with Max. Load
0.5
0.5
0.5
0.5
0.5
INPUT SPECIFICATIONS
DC CONTROL
AC CONTROL
( D P R E F I X )
( A P R E F I X )
Control Voltage Range
3-32 Vdc
90-280 Vrms (60Hz)
Max. Reverse Voltage
-32 Vdc
---
Max. Turn-On Voltage
3.0 Vdc
90 Vrms
Min. Turn-Off Voltage
1.0 Vdc
10 Vrms
Nominal Input Impedance
See Note
60K Ohms
Typical Input Current
2.0 mA
2mA @ 120 Vrms, 4mA @ 240 Vrms
G E N E R A L N O T E S
All parameters at 25C unless otherwise specified.
Off-State dv/dt test method per EIA/NARM standard RS-443, paragraph 13.11.1
Heat sinking required, for derating curves see page 2.
Turn-on time for random turn-on versions
is 0.02 msec (DC Control Models).
Input circuitry incorporates active current limiter.
Zero Voltage and Random
Turn-On Switching
Panel Mount
800V Transient Capability
FastFax Document No.
SERIES A48/D48.
Rev. 011602
PAGE 1 OF 3
Featuring state-of-the-art Surface
Mount Technology, these SPST-NO
relays deliver proven reliability in the
most demanding applications.
Output consists of an SCR AC switch
and is available in zero-cross, random
turn-on (phase controllable) and ver-
sions with either AC or DC input (coil)
control.
Manufactured in Crydom's ISO 9001
Certified facility for optimum product
performance and reliability.
Series A48, Series D48
12-90Amp 480 V ac AC Output
2001 CRYDOM CORP, Specifications subject to change without notice.
Internal Snubber
For recommended applications and more information contact:
USA: Sales Support (877) 502-5500 Tech Support (877) 702-7700 FAX (619) 710-8540
Crydom Corp, 2320 Paseo de las Americas, Ste. 201, San Diego, CA 92154
Email: sales@crydom.com WEB SITE: http://www.crydom.com
UK: +44 (0)1202 365070 FAX +44 (0)1202 365090 Crydom International Ltd., 7 Cobham
Road, Ferndown Industrial Estate, Ferndown, Dorset BH21 7PE, Email: intsales@crydom.com.
GERMANY: +49 (0)180 3000 506
AVAILABLE OPTIONS
-10
Random Turn-On (AC & DC Control)
Phase Controllable (DC Control)
Example: D4890-10
GENERAL SPECIFICATIONS
Dielectric Strength 50/60Hz Input/Output/Base
4000 Vrms
Insulation Resistance (Min.) @ 500 Vdc
10
9
Ohm
Max. Capacitance Input/Output
8 pF
Ambient Operating Temperature Range
-40 to 80C
Ambient Storage Temperature Range
-40 to 125C
MECHANICAL SPECIFICATIONS
Weight: (typical)
3.0 oz. (86.5g)
Encapsulation:
Thermally Conductive Epoxy
Terminals:
Screws and Saddle Clamps Furnished, Unmounted
Crydom Heat Sinks offer excellent
thermal management and are per-
fectly matched to the load current
ratings of Crydom panel mount
relays. Request Crydom's Heat Sink
specification sheet for all the details.
FastFax Document No.
SERIES A48/D48
Rev. 011602
PAGE 2 OF 3
Series A48, Series D48
12-90Amp 480 V ac AC Output
2001 CRYDOM CORP, Specifications subject to change without notice.
APPROVALS
UL
E116949
CSA LR81689
VDE 10143 UG
Screw Torque Requirements:
6-32 Screws - 10 in. lbs.,
8-32 and 10-32 Screws - 20in. lbs.
(Screws dry without grease.)
All dimensions are in inches (millimeters)
1.87
(47.5)
.78
(19.8)
2.30
(58.4)
1.70
(43.2)
.90
(22.9)
.45
(11.4)
1.10
(27.9)
8-32 TERMINAL
(2 PLACES )
1.00
(25.4)
6-32 TERMINAL
(2 PLACES)
1.80
(45.7)
SOLID-STATE RELAY
1
2
OUTPUT
3
4
+
--
INPUT
MOUNTING
HOLE/SLOT
0.17 (4.3) DIA.
BASE PLATE
.125 (3.2)
F
Faston Terminals (Up to 25 Amp Models)
Example: D4850F
.90
(22.9)
FASTON
TERMINAL
.187 X .032
(2 PLCS.)
BASE PLATE
.125 (3.2)
FASTON TERMINAL
.250 X .032 (2 PLCS.)
1.87
(47.5)
.78
(19.8)
2.30
(58.4)
1.70
(43.2)
.87 REF.
(22.2)
OUTPUT
INPUT
1.00
(25.4)
1.80
(45.7)
.45
(11.4)
1.10
(27.9)
MOUNTING
HOLE/SLOT
0.17 (4.3) DIA.
SOLID-STATE RELAY
3
4
1
2
--
+
Fastons:
Single pair (up to 25A)
Double pair* (up to 50A).
*Caution: User must connect to both pairs
For recommended applications and more information contact:
USA: Sales Support (877) 502-5500 Tech Support (877) 702-7700 FAX (619) 710-8540
Crydom Corp, 2320 Paseo de las Americas, Ste. 201, San Diego, CA 92154
Email: sales@crydom.com WEB SITE: http://www.crydom.com
UK: +44 (0)1202 365070 FAX +44 (0)1202 365090 Crydom International Ltd., 7 Cobham
Road, Ferndown Industrial Estate, Ferndown, Dorset BH21 7PE, Email: intsales@crydom.com.
GERMANY: +49 (0)180 3000 506
12
8
4
0
2
4
8
12
6
20
40
60
80
Load Current [Arms]
Max Ambient Temp. [C]
Power Dissipation
110
115
120
Base Plate Temp [
C]
12A
9C/W
5C/W
3C/W
7C/W
NO HEATSINK
30
20
10
25
15
5
0
5
10
20
25
15
20
40
60
80
Load Current [Arms]
Max Ambient Temp. [C]
Power Dissipation
95
120
Base Plate Temp [
C]
25A
1C/W
100
110
3C/W
NO HEATSINK
60
40
20
0
10
20
40
50
30
20
40
60
80
Load Current [Arms]
Max Ambient Temp. [C]
Power Dissipation
90
Base Plate Temp [
C]
50A
2C/W
1C/W
.5C/W
100
110
120
1.5C/W
NO HEATSINK
120
80
40
0
15
30
60
75
45
20
40
60
80
Load Current [Arms]
Max Ambient Temp. [C]
Power Dissipation
100
110
120
Base Plate Temp [
C]
75A
.5C/W
95
1C/W
120
80
40
0
20
40
80
0
60
20
40
60
80
Load Current [Arms]
Max Ambient Temp. [C]
Power Dissipation
100
110
120
Base Plate Temp [
C]
90A
1C/W
.4C/W
.2C/W
90
.5C/W
2C/W
.3C/W
2
6
10
14
0
10
C U R R E N T D E R A T I N G C U R V E S
FastFax Document No.
SERIES A48/D48.
Rev. 011602
PAGE 3 OF 3
Series A48, Series D48
12-90Amp 480 V ac AC Output
2001 CRYDOM CORP, Specifications subject to change without notice.
For recommended applications and more information contact:
USA: Sales Support (877) 502-5500 Tech Support (877) 702-7700 FAX (619) 710-8540
Crydom Corp, 2320 Paseo de las Americas, Ste. 201, San Diego, CA 92154
Email: sales@crydom.com WEB SITE: http://www.crydom.com
UK: +44 (0)1202 365070 FAX +44 (0)1202 365090 Crydom International Ltd., 7 Cobham
Road, Ferndown Industrial Estate, Ferndown, Dorset BH21 7PE, Email: intsales@crydom.com.
GERMANY: +49 (0)180 3000 506
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