The 1597D4MHSC is an Italtronic inside terminal cover for DIN 4 enclosures in the 1597DM Series of DIN rail mounted enclosures. The series accessory table lists it as the DIN 4 "Inside Terminal Cover", and the DIN 4 top-cover drawing includes it among the accessories for the grey Module 4 enclosure 1597DIN4MH53.

Unlike the PC-ABS terminal inserts, this part is made from PPO, the same thermoplastic the series uses for its enclosures, with a UL94 V-0 flame rating. It is a thin part, measuring 2.36 in x 0.64 in x 0.1 in (60 mm x 16 mm x 3 mm). It is RoHS and REACH compliant. The supplied data does not list a shipping weight for this part number.

In the 1597DM range, DIN group numbers refer to the number of terminals on each side of the enclosure. The DIN 4 terminal-cover options are the 1597D4MTC6 (with holes), 1597D4MTCKO (with punch-out holes), 1597D4MBC (with bus connector) and this inside cover. Hammond notes that some accessories are not compatible with all enclosures in a DIN size group and recommends confirming fit on the enclosure drawing.

The 1597D4MHSC is intended for panel builders and OEM engineers who house printed circuit boards and terminal blocks in DIN 4 enclosures. Some chemicals can damage or weaken plastic, so check the manufacturer's Chemical Resistance Statement before using solvents, thread-locking compounds or cutting fluids near the part.