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The DITEK DTK-120/240BK1 is a universal whole-home surge protector designed for 120/240 volt single-phase residential electrical systems. It provides point-of-entry surge suppression, clamping transient voltage spikes before they can reach downstream loads such as HVAC equipment, appliances, and electronics. The unit installs at the main service panel or load center, making it a first line of defense against utility-side surges and lightning-induced transients. Licensed electricians typically handle the installation as part of a service upgrade or standalone surge protection project.
This surge protector is suited for residential applications where a single-phase 120/240 volt service is present. It is a universal-fit design intended for installation at the main distribution panel, protecting all branch circuits in the home simultaneously. Typical install scenarios include new construction, panel replacements, or retrofit surge protection upgrades. The unit ships as a single device and is sold individually.
Designed as an OEM-style point-of-entry surge protector for single-phase 120/240 volt residential electrical service panels.
Installation must be performed by a licensed electrician in accordance with NEC Article 285 (SPDs) and local authority having jurisdiction requirements. De-energize the main service panel and verify absence of voltage before making any connections. The unit mounts at or near the main load center; follow the manufacturer data sheet for specific wiring and grounding configurations. Do not install with the service energized.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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