H12WD Series
• Ratings from 25A to 125A @ 48-660 V AC
• SCR output for heavy industrial loads
• DC control
• Zero-crossing (resistive loads) or random-fire (inductive loads) output
PRODUCT SELECTION
Control Voltage 25A 50A 75A 90A 125A (6)
4-32 Vdc H12WD4825 H12WD4850 H12WD4875 H12WD4890 H12WD48125(6)
AVAILABLE OPTIONS
OUTPUT SPECIFICATIONS (1)
Description 25A 50A 75A 90A 125A (6)
Operating Voltage (47-63Hz) [Vrms] 48-660 48-660 48-660 48-660 48-660
Transient Overvoltage [Vpk] 1200 1200 1200 1200 1200
Maximum Off-State Leakage Current @ Rated Voltage [mArms] 1.0 1.0 1.0 1.0 1.0
Minimum Off-State dv/dt @ Maximum Rated Voltage [V/µsec] (2) 500 500 500 500 500
Maximum Load Current (3) [Arms] 25 50 75 90 125
Minimum Load Current [mArms] 150 150 150 150 150
Maximum 1 Cycle Surge Current (50/60Hz) [Apk] 239/250 597/625 954/1000 1145/1200 1670/1750
Maximum On-State Voltage Drop @ Rated Current [Vpk] 1.6 1.6 1.6 1.6 1.7
Thermal Resistance Junction to Case (Rjc ) [°C/W] 1.02 0.63 0.31 0.28 0.22
Maximum 1/2 Cycle I² t for Fusing (50/60Hz) [A2 sec] 285/259 1779/1621 4555/4150 6560/5976 13950/12709
Minimum Power Factor (with Maximum Load) 0.5 0.5 0.5 0.5 0.5
INPUT SPECIFICATIONS (1)
Description DC Control
Control Voltage Range 4-32 VDC
Maximum Turn-On Voltage 4.0 VDC
Minimum T urn -Off Voltage 1 .0 VDC
Typical Input Current 15 mADC (5)
Nominal Input Impedance See Note 5
Maximum Turn-On Time [msec] (4) 1/2 Cycle
Maximum Turn-Off Time [msec] 1/2 Cycle
GENERAL SPECIFICATIONS
Description Parameters
Dielectric Strength, Input/Output/Base (50/60Hz) 4000 Vrms
Minimum Insulation Resistance (@ 500 V DC) 109 Ohm
Maximum Capacitance, Input/Output 8 pF
Ambient Operating Temperature Range -40 to 80 °C
Ambient Storage Temperature Range -40 to 125 °C
Weight (typical) 3 oz (86.5 g)
Encapsulation Ther ma lly conductive Epoxy
Terminals Screw and saddle Clamps Furnished, Unmounted
Recommended Terminal Screw Torque Range: 6-32 Screws - 10 in/lbs. 8-32 & 10-32 Screws - 20 in. lbs.
Fastons: Single pair (up to 25A) Double pair* (50A model only) Caution: User must connect to both pairs
GENERAL NOTES
1) All parameters at 25°C and per section unless otherwise specified.
2) Off-State dv/dt test method per EIA/NARM standard RS-443, paragraph 13.11.1
3) Heat sinking required, for derating curves see page 2.
4) Turn-on time for DC control random turn-on versions is 0.02 msec
5) Input circuitry version incorporates active current limiter.
6) CE Compliant only.
MECHANICAL SPECIFICATIONS
THERMAL DERATE INFORMATION
AGENCY APPROVALS
Designed in accordance with the requirements of IEC 62314
E116949 (25, 50, 75 and 90A) E116950 (25 and 125A) LR81689 10143 UG
Rev. 120811
ANNEX - ENVIROMENTAL INFORMATION
