Overview
The Ditek DTK-120S15A is a 120VAC surge protective device rated for 15-amp circuits. Part of Ditek’s proven 120S Series, this SPD is engineered for fire alarm systems, control panels, gate motors, and other critical AC power loads. The series-connected topology provides fast response times and maximum surge suppression, making it ideal for installations where equipment downtime is not acceptable.
Key Features
- Series-connected surge protection design for rapid response and maximum protection
- 120VAC, 15-amp rated for dedicated branch circuit protection
- Optimized for fire alarm control panels and critical equipment
- Compliant with industry standards for surge protective devices
- Compact form factor suitable for panel mounting
- Optional remote monitoring and load-removal versions available in the 120S product line
Technical Specifications
| Input Voltage | 120VAC, 50/60Hz |
| Amperage Rating | 15A |
| Circuit Type | Single phase, dedicated branch circuit |
| Connection Method | Series-connected (in-line) |
| Product Series | Ditek 120S Series |
| Part Number | DTK-120S15A |
| Manufacturer | Ditek |
Typical Applications
- Fire alarm control panel power protection
- Gate motor control circuits
- Industrial and commercial control panels requiring 120VAC protection
- Dedicated branch circuits in critical-load environments
- Installations requiring fast surge response and maximum equipment protection
Compatibility & Replacements
Compatible With
- Fire alarm control panels rated for 120VAC input
- Gate motor control systems
- Industrial control equipment rated 120VAC, ≤15A
- Standard 15-amp branch circuits (120VAC, 50/60Hz)
- NFPA 72 compliant fire alarm systems
Replaces / Drop-In Replacement For
Verify compatibility with your system integrator before ordering. Ditek surge protective devices are often interchangeable within the same series and voltage rating; however, confirm your installation requirements with documentation or contact the manufacturer.
Works With
- 120VAC 50/60Hz power sources
- Branch circuit breakers rated 15A or less
- Fire alarm systems and control panels (NFPA 72 compliant)
- Dedicated AC power distribution systems








