SLS switch 3-pole E characteristic 50A for DIN rail mounting. SH switch according to E-DIN0641-21 and dimensional standard DIN 43 880 size 2. SLS in 1- or 3-pole design, single-pole switching, with separate contact position indicator. For direct mounting on DIN rail. The standard (no suggestions) allows the following locks: for the customer to prevent accidental or deliberate switching for the installer with a padlock when working in the system for the DNB with sealing wire, padlock or special key.