MODEL NUMBERS H12WD4875 H12WD4890
OUTPUT SPECIFICATIONS ➀
Operating Voltage (47-63 Hz) [Vrms] 48-660 48-660
Max. Load Current ➂ [Arms] 75 90
Min. Load Current, [mArms] 150 150
Transient Overvoltage [Vpk] 1200 1200
Max. Surge Current, (16.6ms) [Apk] 1000 1200
Max. On-State Voltage Drop @ Rated Current [Vpk] 1.6 1.6
Thermal Resistance Junction to Case (R θJC
) [˚C/W] .31 .28
Maximum I2 t for Fusing, (8.3 msec.) [A 2sec] 4150 6000
Max. Off-State Leakage Current @ Rated Voltage [mArms] 1.0 1.0
Min. Off-State dv/dt @ Max. Rated Voltage [V/µsec] ➁500 500
Max. Turn-On Time ➃
Max. Turn-Off Time
Power Factor (Min.) with Max. Load 0.5 0.5
INPUT SPECIFICATIONS ➀
Control Voltage Range 4-32 Vdc
Max. Turn-On Voltage 4.0 Vdc
Min. Turn-Off Voltage 1.0 Vdc
Nominal Input Impedance See Note 5
Typical Input Current
15 mA @ 5 Vdc
GENERAL NOTES
➀All parameters at 25˚C unless otherwise specified.
➁Off-State dv/dt test method per EIA/NARM standard RS-443, paragraph 13.11.1
➂Heat sinking required, for derating curves see page 2.
➃Turn-on time for DC control random turn-on versions is 0.02 msec.
➄Input circuitry incorporates active current limiter.
•1200 Volt Blocking
•Panel Mount
•Up to 660 Vac
•Zero Voltage and Random
Turn-On
• SCR Output
SERIES H12WD.
REV. 031802
PAGE 1 OF 3
High voltage relays use IC driven cir-
cuits for switching loads up to 660
VAC. All models come with 1200
Volts blocking.
Type H12WD is a snubberless
(reduced leakage current).
Manufactured in Crydom’s ISO 9001
Certified facility for optimum product
performance and reliability.
Series H12WD
25-125Amp • 480 Vac • AC Output
© 2002 CRYDOM CORP, Specifications subject to change without notice.
H12WD4825 H12WD4850
48-660 48-660
25 50
150 150
1200 1200
250 625
1.6 1.6
1.02 .63
260 1620
1.0 1.0
500 500
1/2 Cycle
1/2 Cycle
0.5 0.5
➄
1/2 Cycle 1/2 Cycle
1/2 Cycle
1/2 Cycle
1/2 Cycle 1/2 Cycle
• Integrated Overvoltage
Protection by Automatic
Self Turn-On (Suffix P)
H12WD48125
48-660
125
150
1200
1750
1.7
.22
12700
1.0
500
0.5
1/2 Cycle
1/2 Cycle
➅Compliant only.
➅
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
GENERAL SPECIFICATIONS
Dielectric Strength 50/60Hz Input/Output/Base 4000 Vrms
Insulation Resistance (Min.) @ 500 Vdc 109Ohm
Max. Capacitance Input/Output 8 pF
Ambient Operating Temperature Range -40 to 80˚C
Ambient Storage Temperature Range -40 to 125˚C
MECHANICAL SPECIFICATIONS
Weight: (typical) 3.0 oz. (86.5g)
Encapsulation: Thermally Conductive Epoxy
Terminals: Screws and Saddle Clamps Furnished, Unmounted
APPROVALS
UL E116949
CSA LR81689
VDE 10143 UG
Crydom Heat Sinks offer excellent ther-
mal management and are perfectly
matched to the load current ratings of
Crydom panel mount relays. Request
Crydom’s Heat Sink specification sheet
for all the details.
SERIES H12WD.
REV. 031802
PAGE 2 OF 3
Series H12WD
25-125Amp • 480 Vac • AC Output
© 2002 CRYDOM CORP, Specifications subject to change without notice.
Available Options
FFaston Terminals.
(Up to 50 Amp Models)
Example: H12WD4850F
-10 Random Turn-On.
Example: H12WD4850-10
Screw Torque Requirements:
6-32 Screws - 10 in. lbs.,
8-32 and 10-32 Screws - 20in. lbs.
(Screws dry without grease.)
Fastons:
Single pair (up to 25A)
Double pair* (up to 50A).
*Caution: User must connect to both pairs
All dimensions are in inches (millimeters)
.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.
12
43
-- +
Internal Overvoltage Protection.
Relay Will Self Trigger Between
900-1200Vpk. Not Suitable For
Capacitive Loads.
Agencies Approval Pending.
Example: H12WD4850P
P
GInput Status LED.
Agencies Approval Pending
Example: H12WD4850G
Note: Control Voltage Range 5.5-32 Vdc
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
12
OUTPUT
34 +-- INPUT
MOUNTING
HOLE/SLOT
0.17 (4.3) DIA.
BASE PLATE
.125 (3.2)
Ordering System: Combination of the
suffixes should be made in the following order:
FPG-10.
Example: H12WD4850FPG-10
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
30
20
10
25
15
5
0510 202515 20 40 60 80
Load Current [Arms] Max Ambient Temp. [˚C]
Power Dissipation
95
120
Base Plate Temp [˚C]
25A
1˚C/W 100
110
3˚C/W
NO HEATSINK
60
40
20
010 20 40 5030 20 40 60 80
Load Current [Arms] Max Ambient Temp. [˚C]
Power Dissipation
90
Base Plate Temp [˚C]
50A
2˚C/W
1˚C/W .5˚C/W
100
110
120
1.5˚C/W
NO HEATSINK
120
80
40
020 40 80 060 20 40 60 80
Load Current [Arms] Max Ambient Temp. [˚C]
Power Dissipation
100
110
120
Base Plate Temp [˚C]
90A
1˚C/W
.4˚C/W
.2˚C/W
90
.5˚C/W
2˚C/W
120
80
40
015 30 60 7545 20 40 60 80
Load Current [Arms] Max Ambient Temp. [˚C]
Power Dissipation
100
110
120
Base Plate Temp [˚C]
75A
.5˚C/W 95
1˚C/W
.3˚C/W
CURRENT DERATING CURVES
SERIES H12WD.
Rev. 031802
PAGE 3 OF 3
Series H12WD
25-125Amp • 480 Vac • AC Output
© 2002 CRYDOM CORP, Specifications subject to change without notice.
160
80
40
120
030 60 120 090 20 40 60 80
Load Current [Arms] Max Ambient Temp. [˚C]
Power Dissipation
100
110
120
Base Plate Temp [˚C]
125A
.5˚C/W
.4˚C/W 90
1˚C/W
.2˚C/W
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
