Siemens SENTRON 5TT5830-8 Insta Contactor — 4 NO, 24 V AC Coil
The Siemens SENTRON 5TT5830-8 is an Insta contactor with 4 normally open (NO) contacts and zero NC contacts, designed for switching loads on 230 V AC or 400 V AC circuits up to 25 A. The coil is rated 24 V AC, making it suitable for building automation and lighting control panels where a low-voltage control signal drives higher-power AC loads. Rated for a maximum of 440 V AC, the 5TT5830-8 handles incandescent lamp loads up to 2 000 W, which is the key rating for lighting circuit applications. Supplementary devices can be installed on the contactor, and the manufacturer notes that spacers must be provided between units to ensure adequate heat dissipation, a critical detail for panel builders stacking multiple contactors on a DIN rail.