Indelec Prevectron 3 S50 ESE Air Terminal – P1533
The Indelec Prevectron® 3 S50 (P1533) is an Early Streamer Emission (ESE) lightning conductor with a 50 µs advance time (ΔT). It is the mid-range model of the Prevectron® 3 family, between the S40 and the S60. It offers a wider protection radius than the S40, which suits medium to large buildings, industrial plants and open sites where one mast needs to cover more ground. Indelec describes the Prevectron® 3 range as the first ever UL-certified ESE air terminal.
4 Synchronised Modules with OptiMax®
The S50 uses 4 independent, synchronised modules and continuously measures the electric field gradient (ΔE/Δt) to detect an approaching strike. Indelec’s OptiMax® system, developed by its Lightning Innovation and Research Institute (LiRi), neutralises the space charges around the conductor before the upward streamer is triggered.
Built to Last
The housing is 316 stainless steel with electromagnetic shielding, and the central rod is 200 mm² nickel-plated copper with full electrical continuity. The terminal is tested to a normative lightning current of 100 kA (Imax 200 kA). It fixes to the pole with an M20 thread and carries a 5-year warranty.
Prevectron 3 Range: Which Model Do You Need?
| Model | Part number | Advance time (ΔT) | Modules | Imax |
|---|---|---|---|---|
| Prevectron 3 S40 | P1523 | 40 µs | 3 | 200 kA |
| Prevectron 3 S50 | P1533 | 50 µs | 4 | 200 kA |
| Prevectron 3 S60 | P1543 | 60 µs | 6 | 230 kA |
The longer the advance time, the larger the protection radius at a given mast height. For smaller projects, the Prevectron 3 S40 (P1523) may be enough. For the largest protected areas, choose the Prevectron 3 S60 (P1543).
Complete the Installation
After a lightning strike, a lightning protection system must be inspected. Adding an Indelec Digital Flash Lightning Counter (P8011) on the down conductor records every strike, so you know when an inspection is due.
P1533 Technical Data
| Specification | Value |
|---|---|
| Manufacturer | Indelec |
| Part number | P1533 |
| Product | Prevectron® 3 S50 ESE air terminal |
| Advance time (ΔT) | 50 µs |
| Detection principle | Continuous measurement of electric field gradient (ΔE/Δt) |
| Modules | 4 independent, synchronised |
| Lightning current | Iimp 100 kA / Imax 200 kA |
| Housing | Stainless steel 316, electromagnetic shielding |
| Central rod | 200 mm², nickel-plated copper |
| Pole fixing | M20 thread |
| Net weight | 3.3 kg |
| Packed dimensions | 438 x 228 x 220 mm |
| Warranty | 5 years |
| Certifications | NF C 17-102:2011 Annex C (Bureau Veritas), Qualifoudre (Ineris), UL (E478687), ISO 9001:2015, CE |
Buy the Indelec P1533 from Atlantech Drives
Atlantech Drives supplies genuine Indelec lightning protection products worldwide, including Prevectron® ESE air terminals and lightning flash counters. Our sales team can confirm availability, lead time and pricing for your order. Request a quote today for fast international shipping.
Product status: Active, listed as a current product by Indelec.
