Ditek DTK-DF120S1 Surge Protective Device 120V 20A

Product Description

The DITEK DTK-DF120S1 is a surge protective device designed for fire alarm and life safety systems operating at 120 volts and 20 amps on a single-phase circuit. It provides transient voltage surge suppression at the power input of fire alarm control panels and associated equipment. By clamping voltage spikes caused by lightning, utility switching, and other electrical disturbances, the DTK-DF120S1 helps protect sensitive fire detection and notification circuitry from damage. Installation is performed by licensed electricians or fire alarm technicians as part of a listed fire alarm system installation.

This surge protective device is suited for use in commercial and residential fire alarm system applications where 120-volt single-phase AC power is fed to a fire alarm control panel or annunciator. It is installed at the power entry point of the protected equipment, serving as the first line of defense against destructive transient events on the AC supply line. Fire alarm contractors and electrical contractors typically specify this device during new installations or system retrofits to meet authority having jurisdiction requirements for surge protection on life safety systems.

Key Features

• Rated for 120-volt, 20-amp single-phase AC circuits
• Designed specifically for fire alarm and life safety surge protection applications
• Single-unit form factor — one device per unit of measure
• Provides transient voltage suppression at the protected equipment power input
• Supports compliance with surge protection requirements for fire alarm installations

Compatibility

Designed as an OEM-style surge protective device for 120-volt single-phase fire alarm control panel power circuits in commercial and residential life safety applications.

Installation Notes

Installation should be performed by a licensed electrician or certified fire alarm technician in accordance with NFPA 72, NFPA 70 (NEC), and local authority having jurisdiction requirements. De-energize the AC power circuit completely before connecting or disconnecting the device. Follow the manufacturer data sheet for terminal wiring sequence and mounting orientation. Do not install on circuits with voltage or amperage ratings exceeding the device specifications.