B-Line Eaton series lock latch and handle, 1, Security latch provide security and control access, Type 1 panel enclosure security inserts, Locks, lat

The 7MT1TLK is a 7mm triangular latch insert, so it takes a standard 7mm triangle utility key rather than a bitted key. That is the common electrical-panel access pattern used to keep enclosure doors closed to untrained personnel while letting maintenance crews open them with one tool carried on the belt.

No. This Eaton B-Line insert is rated NEMA 1, which is indoor, general purpose protection against incidental contact and falling dirt only. It offers no rating against rain, hose-down, dust or oil. For an outdoor or wet-location enclosure you need an insert and latch assembly rated for that enclosure type, typically with a gasketed handle.

The insert measures .81 x .275 x .27 inches and weighs .149 lb. It is the insert only, the triangular drive piece that seats into the latch, not a complete handle and latch assembly. Measure the socket in your existing B-Line latch against those figures before ordering, and if you are replacing a whole latch you need the latch and handle assembly instead of the insert alone.

Yes, the 7MT1TLK insert is UL Listed, which matters on institutional and municipal jobs where every component in the panel enclosure has to be a listed part. It is supplied for Type 1 panel enclosures.

That is exactly what this insert is for. Fitting 7MT1TLK inserts across your Type 1 panel enclosures means one 7mm triangular key opens the lot, so maintenance staff carry a single tool and access stays controlled to the people you issue it to. Facilities with a mix of insert patterns should convert the odd ones out to match.

It controls access rather than providing keyed security in the locksmithing sense. Anyone with a 7mm triangle key, and they are widely available, can open it. Use it to keep untrained people out of a live panel; if you need auditable or restricted access, specify a keyed cylinder insert instead.