The Siemens 5TT5752-2 is a SENTRON Insta contactor with 2 normally open and 2 normally closed contacts, rated for 63 A at 230 V AC and a maximum of 440 V AC. The coil is 24 V AC/DC, so it works on either supply without a separate rectifier — handy for panels where control voltage isn't pinned to one type. The IP20 enclosure means it's suited for installation inside a distribution board or control cabinet, not for washdown or outdoor duty.
What the ratings mean for fit
The 63 A rated current (at AC) is the continuous resistive load it can handle — that's the number to match against your branch circuit. The 440 V maximum is the system voltage ceiling, not the coil voltage; the coil itself is 24 V AC/DC. The 2 NO + 2 NC contact arrangement gives you flexibility for interlocking or status feedback without adding an auxiliary block. The 5 000 W filament lamp load rating tells you it's capable of switching incandescent lighting banks, but that's a specific resistive-inrush case, not a motor load.
Deployment and integration
This contactor snaps onto a DIN rail and occupies 3 width units (about 54 mm). The 71 mm depth and 64 mm installation depth mean it fits standard 100 mm deep enclosures without protruding. The screw terminals accept the usual panel wiring — no special tooling needed. It's a straightforward swap for an existing SENTRON Insta unit or a drop-in for a new build.