Siemens 3RT1075-2AB36 Power Contactor: 400A, 23-26V DC Coil
Siemens 3RT1075-2AB36 3-pole power contactor with 400A rating and 23-26V DC coil.
The Siemens 3RT1075-2AB36 is a heavy-duty 3-pole power contactor designed for high-capacity industrial applications. It is rated for AC-3e/AC-3 duty, capable of handling a continuous current of 400 A and a significant switching power of 200 kW at 400 V. This model features a conventional drive and operates with a DC coil voltage of 23-26 V, often used in specific control systems requiring low-voltage DC. The contactor is equipped with 2 normally open (NO) and 2 normally closed (NC) auxiliary contacts, and utilizes spring-loaded terminals for the control circuit and busbar connections for the main power circuit.
This contactor is ideally suited for demanding applications such as large motor control, heavy industrial machinery, and high-power switching in industries like mining, heavy manufacturing, and energy infrastructure. Its robust construction and high current rating ensure reliable operation under continuous heavy loads and frequent switching cycles.
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| Type | Power Contactor |
| Manufacturer | Siemens |
| Part Number | 3RT1075-2AB36 |
| Poles | 3 |
| AC-3e/AC-3 Rating | 400 A |
| Power Rating (400V) | 200 kW |
| Coil Voltage | 23-26 V DC |
| Auxiliary Contacts | 2 NO + 2 NC |
| Main Circuit Terminals | Busbar |
| Control Circuit Terminals | Spring-loaded |