Overview
The Ditek DTK-120S is a 120V surge protection device engineered to safeguard critical power circuits in fire alarm systems, control panels, gate motors, and industrial equipment. This series-connected surge protector delivers maximum protection against transient overvoltage events while maintaining reliable power integrity in the most demanding applications.
Key Features
- Series-connected design for fast response and maximum surge protection
- Hybrid circuit topology provides superior critical load protection
- EMI/RFI filtering exceeds 56dB attenuation (100kHz-100MHz range)
- Comprehensive protection modes: Line-to-Neutral (L-N), Line-to-Ground (L-G), and Neutral-to-Ground (N-G)
- Automatic reset capability handles multiple surge events without replacement
- Compact, lightweight design for flexible installation options
Technical Specifications
| Voltage Rating | 120V AC |
| Current Rating | 15A |
| Operating Frequency | 50/60 Hz |
| Suppressed Voltage | 500V |
| Protection Modes | L-N, L-G, N-G |
| EMI/RFI Attenuation | >56dB (100kHz-100MHz) |
| Temperature Range | -40°F to 185°F (-40°C to 85°C) |
| Dimensions | 6.00″ x 3.58″ x 2.32″ (152mm x 91mm x 59mm) |
| Weight | 0.55 lbs (0.25 kg) |
| Housing Material | ABS |
| Series | DTK-120S |
Typical Applications
- Fire alarm control panel power protection
- Gate motor and access control circuits
- Security system backup power supplies
- Industrial control panel inputs
- Critical 15A load circuits requiring surge immunity
- Data line and signal circuit protection in hazardous environments
Compatibility & Replacements
Compatible With
- 120V AC single-phase power systems
- Fire alarm control panels and circuits
- Industrial control systems and gate motors
- Security and access control systems
- Critical load equipment rated 15A or less
Replaces / Drop-In Replacement For
- DTK-120SLR (with load removal feature)
- DTK-120SRD (with remote monitoring)
- Other 120V 15A series-connected surge protectors in comparable applications
Works With
- UL1449-listed surge protective devices (SPD) systems
- Standard hardwired electrical installations
- Fire alarm monitoring and control systems
- Industrial automation and safety circuits
