NewTrend · lightning strike counter
Product overview
The TO-LSC lightning strike counter records impulse events sensed through the external CT in a surge-protection installation. Its three-digit LED display shows the accumulated event count from 0 to 999. A front RESET key provides local reset control, and a rear clip mounts the compact housing on a 35mm DIN rail.
Technical specifications
| Model | TO-LSC |
|---|---|
| Rated supply | AC 220V |
| Frequency | 50/60Hz |
| Record range | 0–999 events |
| Counting impulse threshold | ≥1kA |
| Display | Three-digit LED digital tube |
| Current sampling | External sensing probe / CT |
| Local control | Front RESET key |
| Supply terminals | 1–2, as marked on the unit |
| CT terminals | 3–4, as marked on the unit |
| Mounting | 35mm DIN rail |
| Illustrated ambient-temperature reference | −40°C to +85°C |
| Written storage-temperature reference | −25°C to +70°C |
| Included items | One counter and one CT |
Display versions and local reset
The selectable versions on this page have a white front panel with white, green or red LED digits. The original material also illustrates transparent-front units; the connection example uses one of those units. The counter displays the number of recorded impulses, with a dedicated RESET key below the display.
SPD monitoring connection
The illustrated three-phase four-wire example shows the external CT around the SPD protective-earth connection, a separate AC220V supply to counter terminals 1 and 2, and CT leads to terminals 3 and 4. The SPD pictured in the example is a separate device. The counter records sensed events and does not replace the surge protective device.
External CT and supplied items
The supplied package consists of one lightning strike counter and one CT. The CT senses the impulse current; its two leads connect to the counter sampling terminals. The original product description gives a counting threshold of at least 1kA.
DIN-rail installation and maintenance
The rear mounting clip secures the unit to a standard 35mm rail in a distribution enclosure. The visible event count supports inspection and maintenance of the surge-protection installation. The original feature material highlights convenient installation and event-count recording.
Applications
The original illustrations show use in distribution equipment, residential buildings, transport installations and industrial equipment where surge-event records support maintenance. The two temperature references describe different conditions: the illustrated table lists ambient temperature, while the written description separately lists storage temperature.
