Ditek (DTK-TSS4D) Tvss 120vac 54ka series in nema 4 enclosure w/dry contacts

The Ditek DTK-TSS4D is a series-connected 120 VAC surge protector in a NEMA 4 enclosure with Form C dry contacts for remote status. Specifically, it carries the full equipment load (up to 20 A) and filters EMI/RFI on the way through. Furthermore, the dry contacts let a building automation system or alarm panel detect when the SPD has failed.

First, the DTK-TSS4D uses a multi-stage hybrid clamp. Therefore, it handles a 54,000 A peak surge current. In addition, it carries a UL 1449 3 kA nominal discharge current rating (In). As a result, it meets typical commercial branch-circuit SPD requirements.

Also, the DTK-TSS4D includes UL 1283 EMI/RFI filtering. Specifically, it attenuates noise up to 35 dB across 100 kHz to 100 MHz. As a result, sensitive electronics downstream see cleaner power.

Ditek DTK-TSS4D Verified Specifications

• Operating voltage: 120 VAC, single phase
• MCOV: 150 VAC
• Maximum continuous current: 20 A
• Peak surge current: 54,000 A
• Nominal discharge current (In): 3 kA
• SCCR: 10 kA
• Frequency: 50/60 Hz
• EMI/RFI filtering: up to 35 dB, 100 kHz to 100 MHz (UL 1283)
• Status indication: diagnostic LED + Form C dry contacts
• Connection: hardwired
• Enclosure: NEMA 4
• Listing: UL Listed SPD
• Warranty: 10-year limited

Typical Applications

First, dedicated 120 VAC branch circuits feeding sensitive electronics. In addition, fire alarm panel primary power circuits. Also, security and access-control panel branch circuits. Furthermore, BAS controllers and similar mission-sensitive 120 V loads up to 20 A. As a result, the DTK-TSS4D’s series-connected design routes all branch current through the surge protector.

Installation Note

The DTK-TSS4D is series-connected. Specifically, the line side lands on the input terminals and the load side on the output terminals. As a result, all branch current must pass through the device. Therefore, the equipment’s full-load amps must be at or below the 20 A rating. Also, run the Form C contact pair to a supervised auxiliary input on the panel that needs to know about SPD status.

Order or Get Application Help

Life Safety Consultants stocks the Ditek DTK-TSS4D. To order, call 1-888-557-0558. You can also email sales@lifesafetycom.com.

For more information, contact the Life Safety Consultants team at (888) 557-0558, or email us at: sales@lifesafetycom.com