The Siemens 3VM9213-0QA00 is a nut keeper kit, a three-unit accessory designed for the 3VM12 series of molded case circuit breakers. It holds the mounting nuts in place during panel assembly, saving a hand when you're torquing down the breaker in a tight enclosure.
What the codes mean
Group Code P360 and Product Group 5384 are Siemens internal classification tags — they help your procurement system cross-reference the part against the right catalog family. They don't change fit or function, but they're useful for matching against a legacy BOM or a parts list that uses these codes instead of the order number. The Product class is B, which means return restricted — you'll need to coordinate with your Siemens contact before sending anything back. That's standard for many accessory kits that ship as non-stocked, order-specific items.
RoHS compliant since 2014-10-01, and REACH Article 33 information is available on request. No UL or IEC listing is on record for this accessory — it's a mechanical mounting aid, not a rated component. Packaging dimensions are 170 x 100 x 30 mm, and it ships as a single piece per unit.