Siemens 3RT2 Motor Control Contactor, 24V dc Coil, 3-Pole, 38 A, 18.5 kW, 400V ac 3RT2028-1BB40

Siemens 3RT2028-1BB40 is a high-quality 3-pole motor control contactor designed for industrial automation and motor protection applications. It operates with a 24V dc coil voltage and supports a contact current of 38 A at 400V ac, delivering a power rating of 18.5 kW. The contactor is part of the Siemens SIRIUS Innovation series noted for its durability and energy efficiency.

This contactor is ideal for motor control in demanding industrial environments, with an operational temperature range from -25°C to +60°C. It offers mechanical endurance with a service life commensurate with 10 million operating cycles, making it suitable for applications such as lifts, escalators, and other motor-driven machinery.

The device features 3 normally open main contacts (3 NO) and 2 auxiliary contacts configured as 1 NO and 1 NC for auxiliary control functions. Mounting is via DIN rail, simplifying integration into electrical panels. The screw clamp terminals ensure fast and secure wiring connections. The compact dimensions (85mm length x 45mm width x 107mm depth) allow for space-efficient installations in small enclosures.

Product standards compliance includes CCC, CSA, EAC, RoHS, UKCA, UL, and VDE certifications, reflecting international quality and safety adherence. The rated surge voltage resistance up to 6kV protects the contactor against power spikes, ensuring reliability in fluctuating electrical environments.

Siemens emphasizes sustainability with this product, featuring low carbon manufacture as part of their Better World program. Originating from Germany, it upholds the brand’s reputation for engineering excellence and environmental responsibility.

Equipped with a 24V dc coil and 3 poles for reliable switching. Rated contact current of 38 A and contact voltage of 400V ac. Power rating of 18.5 kW ensures capable motor control. Configured with 3 NO main contacts and 2 auxiliary contacts (1 NO/1 NC).

Mounts easily on a DIN rail for compact installations. Operates efficiently within a temperature range of -25°C to 60°C. Technical approvals including CCC, CSA, EAC, RoHS, UKCA, UL, and VDE ensure compliance. Durable screw clamp terminals for secure electrical connections.

Compact design dimensions: 85mm length, 45mm width, and 107mm depth. Energy efficient with minimal coil power loss for reduced operational costs. Manufactured in Germany with a low carbon footprint as part of Siemens Better World initiative.

Explore our Automation & Control Gear category for more high-performance Siemens Contactors and motor control equipment for industrial, manufacturing, and commercial applications.