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The DITEK DTK-120/240HW is a hardwire surge protection device designed for 120/240-volt, 3-wire plus ground electrical systems. It provides transient voltage surge suppression at the point of connection, protecting downstream equipment and electrical loads from damaging voltage spikes caused by lightning strikes, utility switching events, and inductive load cycling. This unit is intended for permanent hardwire installation and is typically specified in residential and light commercial applications where panel-level or equipment-level surge protection is required. Licensed electricians handle the installation as part of a broader surge protection strategy.
The DTK-120/240HW is suited for use in 120/240-volt single-phase systems common in residential service panels, subpanels, and dedicated equipment circuits. It is appropriate for applications where hardwired, always-on surge suppression is preferred over plug-in or receptacle-style devices. The unit fits into electrical protection schemes for HVAC equipment, well pumps, lighting panels, and other hardwired loads that require continuous protection without relying on a cord-and-plug connection.
Designed as an OEM-style hardwire surge protector for 120/240-volt, 3-wire plus ground single-phase electrical systems typical in residential and light commercial service applications.
Installation must be performed by a licensed electrician in accordance with the National Electrical Code (NEC). De-energize the circuit and verify absence of voltage at all conductors before making any connections. Follow the manufacturer data sheet for proper conductor sizing, termination sequence, and enclosure mounting requirements. Do not energize the device until all connections are secure and the enclosure is properly closed.
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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