The SIRIUS 3RT1936-4EA2-ZW97 is a terminal cover for box terminals, designed for Size S2 contactors and overload relays. It ships in multi-unit packaging of 130 units per pack — a bulk quantity suited for panel-build runs where you need to cover every pole on a row of S2 devices.
This part is listed with a lifecycle stage of "current" but the description flags it as a phased-out product. The official successor is the SIRIUS 3RT2 series cover.
The cover snaps onto the box terminal of Size S2 contactors and overload relays in the SIRIUS family. It provides IP20 finger protection at the terminals once fitted.
RoHS compliance is indicated by the Substance Prohibitance Date of 07/01/2006, meaning the part meets the EU RoHS directive effective from that date. No UL or CSA listing is carried in the spec record for this accessory — the contactor it covers carries those approvals, but the cover itself is a mechanical accessory without an independent safety certification.