Siemens 3RT2028-1BB44-3MA0 38A DC Power Contactor
Siemens 3RT2028-1BB44-3MA0 3-Pole Power Contactor
The Siemens 3RT2028-1BB44-3MA0 is a robust 3-pole power contactor rated for AC-3e/AC-3 duty. It handles up to 38A and 18.5 kW at 400V, featuring a 24V DC coil for control. This model is equipped with 2 normally open (NO) and 2 normally closed (NC) auxiliary contacts, along with a captive auxiliary switch for added reliability. It's designed for demanding industrial environments and is part of the Siemens Sirius 3RT series.
This contactor is ideal for applications requiring DC coil operation, such as in battery-powered systems, specific automation tasks, or where DC control logic is used. Its 38A rating makes it suitable for controlling medium-sized motors and other inductive loads. The integrated captive auxiliary switch ensures consistent contact operation, while the absence of a retrofittable surge suppressor means it's designed for specific circuit conditions.
Find the Siemens 3RT2028-1BB44-3MA0 at Stanlo Automation. As a veteran-owned distributor of surplus industrial automation parts, we are committed to providing reliable components and exceptional service to keep your machinery operational and your projects on track.
| Type | Power Contactor |
| AC-3e/AC-3 Rating | 38 A |
| Power Rating | 18.5 kW / 400 V |
| Poles | 3 |
| Coil Voltage | 24 V DC |
| Auxiliary Contacts | 2 NO + 2 NC |
| Terminals | Screw |
| Size | S0 |
| Captive Auxiliary Switch | Yes |
| Surge Suppressor | Not retrofittable |