The DITEK DTK-120/240HD Surge Protective Device (SPD) provides comprehensive power protection for critical fire alarm and emergency notification systems in commercial and institutional environments. Engineered for split-phase 120/240 VAC electrical configurations, this high-performance device offers robust surge suppression to safeguard sensitive fire detection and alarm infrastructure against destructive transient voltage events.
Designed specifically for fire alarm professionals, the DTK-120/240HD delivers superior protection across three-wire plus ground configurations with an impressive 50kA surge current capacity. Its Type 1 and Type 2 classification enables installation at both service entrance and downstream branch circuit locations, making it ideal for protecting addressable fire alarm control panels, notification appliance circuits, and auxiliary power systems in facilities ranging from healthcare campuses to multi-story commercial complexes.
Fire alarm technicians and facilities managers will appreciate this SPD’s robust engineering, which provides comprehensive protection against electrical transients from external sources like lightning strikes, utility grid switching, and internal load-related disturbances that can compromise critical life safety systems.
Key Features
- UL1449 Listed surge protective device for comprehensive electrical protection
- Split-phase 120/240 VAC compatibility with 3-wire (+ground) configuration
- 50kA maximum surge current rating for extreme electrical event mitigation
- Type 1 and Type 2 SPD classification for flexible installation options
- Precision metal oxide varistor (MOV) technology for consistent surge suppression
- Compact design optimized for standard electrical panel integration
Specifications
- Voltage: 120/240 VAC Split Phase
- Wiring Configuration: 3W (+Ground)
- Maximum Surge Current: 50kA
- Protection Mode: L-N, L-G, N-G
- Response Time: <5 nanoseconds
Compliant with critical industry standards including NFPA 72 (National Fire Alarm and Signaling Code), this surge protector supports reliable performance in fire alarm system installations across diverse commercial environments such as office buildings, educational facilities, healthcare campuses, and industrial complexes.
For more information, contact the Life Safety Consultants team at (888) 557-0558, or email us at: sales@lifesafetycom.com
Additional information
| Weight | 1.6 lbs |
|---|---|
| Dimensions | 10 × 6.25 × 3.25 in |
| Condition | New |
| Manufacturers | Ditek |
| Part Type | Replacement Part |






