for double-deck support plates, with 1/2-row distributor, meter at the top, 16 mmN for Y891M 1200 mm, N for Y891DS3 950 mm, for installation kits with 1-row distributor (1200 mm high) and 2-row distributor (1350 mm high), at 1350 mm high the devices must be placed on the lower top hat rail of the upper connection compartment, Y891Mfor meters with a larger clamping range (e.g. 80 A meters), wire end ferrules 25 mm, Y891DS3for standard meters up to 63 A rated current or up to 44 A continuous current, wire end ferrules 18 mm
