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Siemens 1MB2121-2DA11-6AG3 Contactor

Siemens 1MB2121-2DA11-6AG3 7.5kW 400V 3 Phase Contactor.

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ManufacturerSiemens

Part number1MB2121-2DA11-6AG3

Power Rating 7.5kW

Voltage 400V

Phase 3

Type Contactor

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7.5kW power capacity 400V operation 3-phase load switching Industrial duty Siemens reliability

Product description

The Siemens 1MB2121-2DA11-6AG3 is a power contactor designed for switching three-phase loads. This contactor is likely part of Siemens' industrial control components, suitable for motor control and other power switching tasks. Its specifications indicate it can handle loads up to 7.5kW at 400V in a 3-phase configuration.

This type of contactor is widely used in industrial automation for controlling motors, pumps, fans, and other high-power equipment. Applications span across manufacturing, building services, and infrastructure projects where reliable and safe operation of electrical machinery is paramount.

Stanlo Automation, a veteran-owned surplus parts distributor, offers the Siemens 1MB2121-2DA11-6AG3. Sourcing from Stanlo provides a cost-effective alternative for acquiring essential automation components, ensuring your operations continue without interruption.

Technical specifications

Power Rating	7.5kW
Voltage	400V
Phase	3
Type	Contactor
Series	3RT

Common applications

Motor starting

Pump control

Fan control

Industrial machinery

Power distribution

Compatible systems

Compatible with 400V, 3-phase industrial power systems

Also known as

Siemens 3RT contactor

Replaces / compatible with

This 7.5kW, 400V, 3-phase contactor is suitable for replacing similar components in Siemens control systems or for general industrial applications requiring robust power switching.

Technical note

Expert tip

Ensure the coil voltage of the contactor matches your control circuit voltage for proper activation. Verify auxiliary contact configurations if needed for control logic.

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Frequently asked questions

What is the typical application for the Siemens 1MB2121-2DA11-6AG3 contactor?

The Siemens 1MB2121-2DA11-6AG3 contactor is typically used for switching three-phase loads, most commonly for starting and controlling motors up to 7.5kW at 400V. It's found in industrial automation and machinery control.