CR-S relay at 110/125 VDC
The ABB 1SVR405521R6100 is a CR-S series general purpose relay with a 110/125 VDC coil — the description confirms CR-S110/125VADC, meaning it's wound for nominal DC control voltages in that band. It sits in the Relays & Sockets subcategory under ABB's General Purpose Relays line, a workhorse family for control panel isolation and signal switching.