The Siemens 3RT1075-6CF308K is a high-current SIRIUS 3RT power contactor designed for industrial motor switching, machine control and automation applications. It features mirror contacts, screw terminals and an AC coil, making it suitable for applications where reliable power switching and auxiliary status monitoring are required.
The corresponding Siemens 3RT1075-6CF30 configuration belongs to the high-capacity 3RT1075 family and is intended for demanding industrial switching applications.
The 3RT1075-6CF308K belongs to the Siemens SIRIUS 3RT range of power contactors used for switching and controlling electrical loads in industrial systems.
Its high-current design makes it suitable for large motor-control applications and industrial equipment where reliable contactor operation is required.
Typical applications include:
The contactor should always be selected according to the motor or load current, utilization category, operating voltage and application duty.
The 3RT1075-6CF308K is designed for high-current industrial switching applications within the Siemens SIRIUS 3RT family.
Its robust construction makes it suitable for applications such as:
The exact permissible current and motor-power rating should be checked against the applicable Siemens configuration and utilization category before installation.
The 3RT1075-6CF308K is specified with mirror contacts.
Mirror contacts provide auxiliary-contact information associated with the main contact condition and can be used in suitable monitoring, interlocking and control circuits.
Typical applications include:
The complete safety function must be designed according to the machine's control architecture and applicable requirements.
The contactor uses screw terminals for its control and auxiliary connections.
This provides a familiar connection method for electrical panel builders and maintenance teams and can simplify wiring and servicing when installed according to the manufacturer's requirements.
The 3RT1075-6CF308K is specified with an AC coil.
The exact coil/control voltage should always be verified against the product marking and the applicable Siemens documentation before installation.
An AC-coil configuration is suitable for compatible industrial control circuits using the specified AC control voltage.
The relevant 3RT1075 configuration can provide auxiliary contacts for control and monitoring functions.
Auxiliary contacts can be used for:
The exact auxiliary-contact arrangement should be verified against the complete article configuration before designing the control circuit.
The 3RT1075-6CF308K can be integrated into a complete motor-control system alongside:
A typical arrangement can be:
Control System → Contactor Coil → Main Contacts → Motor
Auxiliary contacts can provide feedback and interlocking signals to the control system.
The Siemens 3RT1075-6CF308K can be used in:
For related Siemens industrial electrical and automation products, customers can explore the Siemens product range at SB Smart.
The 3RT1075-6CF308K is suitable for OEM machine manufacturers, electrical panel builders, automation integrators and industrial maintenance professionals.
Its combination of high-current switching, mirror contacts, screw-terminal connections and AC coil operation makes it suitable for demanding industrial motor-control systems.
The Siemens 3RT1075-6CF308K combines high-current switching, mirror-contact functionality, screw terminals and an AC coil in a Siemens SIRIUS 3RT power contactor.
It is a suitable choice for OEMs, electrical panel builders and automation integrators working with large industrial motors and high-power switching applications.
The exact current, motor-power and coil ratings should be confirmed against the complete Siemens article configuration before procurement and installation.
SB Smart supplies Siemens industrial electrical and automation products across Faridabad, Gurgaon/Gurugram, Delhi NCR, Haryana, Noida, Punjab, Mumbai and all major cities across India.
Major delivery locations include:
It is a Siemens SIRIUS 3RT power contactor with mirror contacts, screw terminals and an AC coil.
Yes. The product description specifies mirror contacts.
It uses an AC coil.
Yes, the product specification includes screw terminals.
It can be used in industrial motor-control panels, conveyors, pumps, compressors, production machinery and automation systems, subject to correct application ratings.
They can support main-contact status monitoring, interlocking, control feedback and suitable safety-related control functions.
Yes. Auxiliary contacts can provide suitable feedback and interlocking signals within a properly designed PLC-based control system.
Yes. It is suitable for OEM machine builders, panel builders and industrial automation integrators.
The contactor current rating, utilization category, motor/load characteristics, operating voltage, coil voltage and auxiliary-contact configuration should be verified before installation.
You can explore the Siemens product range at SB Smart for Siemens SIRIUS power contactors, overload relays, motor-control components and other industrial automation products.
| Specification | Details |
|---|---|
| Product Name | Power Contactor |
| Manufacturer | Siemens |
| Series | SIRIUS 3RT |
| Order Code | 3RT1075-6CF308K |
| Product Type | Power Contactor |
| Number of Main Poles | 3 Pole |
| Main Contact Configuration | 3 NO |
| Auxiliary Contacts | 2 NO + 2 NC |
| Coil Type | AC Coil |
| Coil Voltage | 110–127 V AC |
| Control Frequency | 50/60 Hz |
| Frame Size | S12 |
| Rated Operational Current (AC-3) | 400 A |
| Rated Operational Current (AC-1) | 600 A |
| Motor Rating @ 400V | Up to 200 kW |
| Rated Operational Voltage | Up to 1000 V AC |
| Terminal Type | Screw Terminals |
| Main Circuit Connection | Busbar |
| Mirror Contact Elements | Yes |
| Mechanical Life | Up to 10 Million Operations |
| Mounting Type | Panel Mount |
| Protection Class | IP00 |
| Application | Motor Control & Power Switching |
| Brand | Siemens |
| Condition | New & Genuine Product |
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