What the 5TT5030-6 Is and Where It Fits
The Siemens 5TT5030-6 is a SENTRON Insta contactor with 4 normally-open (NO) contacts and no NC contacts, designed for switching loads up to 400 V AC at 25 A. The coil is rated 230 V AC (also accepts 220 V DC actuation), making it suitable for standard building and industrial control panels where a compact, DIN-rail-mounted contactor is needed. At 2 modular width units (35 mm wide, 71 mm deep, 90 mm tall), it fits into standard distribution boards or enclosure sub-panels with a 35 mm DIN rail. The IP20 rating means it's touch-safe for installation inside a cabinet but not for wet or dusty environments.
Key Ratings and Installation Notes
The contactor is rated for a maximum operating voltage of 400 V AC and a rated value of 230 V AC, with the coil drawing power at 230 V AC or 220 V DC. The power loss per pole is 2.2 W in hot operating state at rated current — factor this into the enclosure thermal budget, especially when multiple units are ganged. A critical installation detail: the evidence notes that provision must be made for spacers to ensure heat dissipation. When mounting multiple 5TT5030-6 units side by side on the DIN rail, leave air gaps or use the manufacturer-recommended spacing to keep the contactor within its thermal limits. Supplementary devices can be installed on the contactor (e.g., auxiliary contact blocks or surge suppressors), which adds flexibility for building out a control circuit without changing the base unit.
Lifecycle and Sourcing
Sourced to order against the BOM quantity.