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3RT1044-1BB40 Siemens
Product Details
Specifications provided for reference. Verify critical details against official manufacturer documentation before installation.
Product Overview
The Siemens 3RT1044-1BB40 is a three-pole power contactor from the SIRIUS series used in AC-3 motor control applications. It is designed to switch motors up to approximately 30 kW at 400 V AC with a rated current of 65 A. The device features screw-terminal connections and is dimensioned for panel or DIN-rail mounting. Typically deployed in motor starters, control panels, and machinery requiring reliable switching in industrial environments. 3RT1044-1BB40 is offered as a legacy model, now phased-out in favor of the 3RT2037-1KB40 successor.
Best Suited For
- AC-3 motor switching up to 30 kW at 400 V AC
- Control panel installation with DIN-rail or screw-terminal mounting
- Replacement in legacy Siemens SIRIUS Size S3 motor circuits
- Systems requiring 24 V DC coil control