Compared to the 10 m variant
The closest functional sibling is the CS1W-CN131 at 10.00 m. Both are I/O cables with rectangular connectors and the same agency approvals (CE, Lloyd, NK). The CS1W-CN523 is the shorter option — 5 m vs 10 m — so if your panel layout calls for a tighter cable run, this one avoids the extra coil. The CS1W-CN131 will work electrically but won't drop in without managing the spare length.
Manufacturer status shows active; no end-of-life signal from the factory. This part is already in the active catalog and can be ordered directly — no need to worry about a looming last-time-buy on a common CS1 cable.
Compliance documentation is straightforward: the CS1W-CN523 carries CE, Lloyd, and NK approvals — covers European market and marine applications (Lloyd's, Nippon Kaiji Kyokai). For your quality pack, these certificates are standard with the shipment.