This card controls 8 relays with 2 changeover contacts each. The 1. enables 3 A, the 2. 1.5 A. In addition, 8 additional change-over or normally open relays can be controlled. Currents of 15 A are possible here, or briefly 20 A with change-over contact or 30 A with NO contact.
In combination with REL 8 + REL 4z + REL 4z