Panel fit and DIN-rail footprint
The 5TT5050-0 occupies 3 modular width units on the DIN rail, with a width of 53.5 mm and a depth of 71 mm (64 mm installation depth). The 90 mm height and IP20 finger-safe enclosure let it sit in standard distribution boards without extra shrouding. Siemens notes that spacers must be provided between units to ensure heat dissipation — the 8 W power loss per pole at rated current adds up in a dense panel.
Contact configuration and coil voltage — the BOM-fit check
Four normally-open contacts and zero NC contacts — this is a make-only switching block, not a changeover or interlocks setup. The coil accepts 230 V AC or 220 V DC (rated 230 V AC, 220 V DC), so it works on both control voltage standards without a separate rectifier. Main contacts are rated 63 A at 400 V AC — a common lighting or resistive-heating load rating in commercial panel builds.
Lifecycle and sourcing posture
The 5TT5050-0 is part of the SENTRON Insta contactor series, a standard modular line for DIN-rail panels. Supplementary devices can be installed on the product — useful for adding auxiliary contacts or surge suppressors without changing the base unit.