SCI provides a complete line of Solid State SCR Ignitron Tube Replacements. Replacements are available in both water cooled and air cooled designs, and easily mount on existing Ignitron Tube brackets.
SCI's replacements are engineered so that no modifications are required to existing controls or timer. All wiring and assembly is complete and our Ignitron Tube Replacements are supplied with MOV and normally closed thermostat.
Installation instructions are provided upon request.
Water cooled - DHE Series
Ignitron Size
SCI Part #
Welding Transformer Size
Welding Rating Amps RMS at 5% duty cycle
SGL Cycle Surge Current (ITSM)
SCR Voltage Rating (PIV) (VRRM)
A/B
DHE800-22M
DHE1200-22M
100KVA
200KVA
1300
1700
7500
9000
2200
2200
J/C D
DHE1500-22M
DHE1700-22M
300KVA
550KVA
1800
2300
11200
11200
2200
2200
D/E
E
DHE2500-22M
DHE3300-22M
650KVA
750KVA
2600
3200
16400
21000
2200
2200
Super E
DHE7847-22M
1500KVA
6526
40000
2200
Air Cooled - DAHE Series
Ignitron Size
SCI Part #
Welding Transformer Size
Welding Rating Amps RMS at 5% duty cycle
SGL Cycle Surge Current (ITSM)
SCR Voltage Rating (PIV) (VRRM)
A/B
DAHE180-22M
125KVA
1540
7500
2200
C
DAHE195-22M
250KVA
1810
9000
2200
D/E
DAHE055-22M
500KVA
2630
16400
2200
Solid State Mechanical Contactor Replacements - Air Cooled
SCI now offers a complete line of Air Cooled Solid State Mechanical Contactor Replacements for welding controls thru 60 KVA. These compact replacements feature encapsulated modules mounted on air cooled heat sink extrusions. Each heat sink is cut 4- 1/2 inches long, machined, and have a gold irridite finish. These replacements are completely assembled and tested prior to shipping.
Darrah's mechanical contactor replacements easily wire into existing circuits and are operated by external contact closure.
SCI now offers a complete line of Air Cooled Solid State Mechanical Contactor Replacements for welding controls thru 60 KVA. These compact replacements feature encapsulated modules mounted on air cooled heat sink extrusions. Each heat sink is cut 4- 1/2 inches long, machined, and have a gold irridite finish. These replacements are completely assembled and tested prior to shipping.