DITEK DTK-120/240HW — Type 1 surge protective device for 120/240 VAC split-phase service, parallel wired.
This is the split-phase member of the DTK-HW Series, the compact polycarbonate SPD that threads into a panel knockout to protect a fire alarm control panel. A diagnostic LED shows the protection is intact; if it goes dark the surge components have disconnected and the unit needs replacing, while power to the load continues unprotected.
- 120/240 VAC split phase, 3-wire plus ground, MCOV 150 V and 300 V
- Voltage protection rating 700 V line-neutral and line-ground, 1,500 V line-line and neutral-ground
- 50,000 A surge current rating, 100,000 A SCCR, 10 kA nominal discharge current
- UL 1449 5th Edition Type 1, CSA C22.2 No. 269.1-17 Type 1
- 3/4 in. NPT male hub, 18 in. 12 AWG leads, 20 A breaker recommended
- NEMA Type 4X polycarbonate, -31 to 176 °F (-35 to 80 °C), 95 percent humidity
- 3.47 × 2.08 × 1.89 in., 8.8 oz.
Read the voltage suffix: DTK-120HW is 120 V single phase with no line-to-line mode at all, and DTK-240HW covers 240/277 V at 320 V and 640 V MCOV. DTK-FMK is the flush mount kit.
