ABB 1SVR730840R0500 Current Monitoring Relay. ABB Current Monitoring Relay, 1-Function, Series: CM Series, 24 to 240 VAC/VDC, 0.3 to 15 A, 50/60 Hz, AgNi Contact, 2CO-SPDT, DIN Rail Mount, Screw Terminal, LED, 0/0.1 to 30 s Trip Delay, IP50/IP20 Enclosure, 22.5 mm W x 103.7 mm D x 85.6 mm H. Additional Description: ABB -1SVR730840R0500 CM-SRS.22S CURRENT MON. RELAY. Catalog Description: Current monitoring relay with 24-240V AC/DC supply voltage and selectable 0.3-15 amps sensing range, with adjustable 0 or 0.1-30 s trip delay.