SLS switch 4-pole 3P+N E characteristic 40A for busbar QuickConnect.SH switch according to DIN VDE 0641-21 and dimensional standard DIN 43880 size 6. SLS in different pole design, single-pole switching, with separate contact position indicator. Plug-in contact for direct busbar mounting. The standard multifunctional lock enables the following locking: 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.