The Siemens SENTRON 5TT5000-6 is an insta contactor with 2 normally open contacts, rated for 230 V AC operating voltage (220 V DC also listed). It occupies 1 modular width unit (17.5 mm) on a DIN rail, with a depth of 71 mm and height of 90 mm.
Panel fit and heat dissipation
At 17.5 mm wide (1 MW), this contactor fits standard DIN-rail enclosures and leaves room for adjacent devices in a crowded row. The installation note requires spacers between units to allow heat dissipation — the 1.7 W per pole power loss at rated current adds up in a dense panel, so don't skip the gap. Depth of 71 mm (installation depth 64 mm) means it clears most shallow enclosures but check your gland plate clearance.