The Siemens 3RT1056-6AF368K is a power contactor from the Siemens SIRIUS range, designed for reliable switching and control of electrical loads in industrial automation and motor-control applications. It features mirror contacts, screw terminals and an AC/DC coil, making it suitable for applications where dependable switching and auxiliary-status feedback are required.
This contactor is designed for integration into industrial control panels, motor-control centres, automation systems and machine-control applications.
The 3RT1056-6AF368K belongs to the Siemens SIRIUS contactor family, which is widely used for switching motors and other electrical loads in industrial systems.
Power contactors are commonly used to control loads remotely through a control circuit. Instead of switching the main load directly from a manual operator device, the contactor allows the control system to energize or de-energize the load through its switching mechanism.
Typical applications include:
One of the important features of the 3RT1056-6AF368K is its mirror-contact arrangement.
Mirror contacts are particularly relevant in safety-related control applications where the auxiliary contact state needs to provide reliable information about the condition of the main contacts.
They can be used for:
The exact safety function must always be designed and validated according to the applicable control-system requirements.
The contactor uses an AC/DC coil, providing flexibility for control systems that use compatible AC or DC control voltages.
This can be useful for industrial control panels where different control architectures are used.
Potential control-system applications include:
The actual coil voltage and control-circuit requirements should always be verified against the manufacturer's technical documentation before installation.
The 3RT1056-6AF368K uses screw terminals for electrical connections.
Screw-terminal construction is widely used in industrial control panels and provides a familiar connection method for panel builders and maintenance teams.
It can support practical installation and servicing of the contactor within compatible control-panel assemblies.
A power contactor is designed to switch electrical loads through an electrically controlled mechanism.
The 3RT1056-6AF368K can be incorporated into control arrangements for applications such as:
The correct contactor rating must be selected according to the motor/load current, utilization category, operating voltage and application requirements.
The Siemens 3RT1056-6AF368K can be integrated into industrial automation systems where electrical loads need to be switched through a control circuit.
It can be used alongside:
This allows the contactor to form part of a complete motor-control or automation solution.
Typical applications include:
For related Siemens industrial electrical and automation products, customers can explore the Siemens product range available from SB Smart.
The 3RT1056-6AF368K is suitable for OEM machine manufacturers, electrical panel builders, automation integrators and industrial maintenance professionals.
Its combination of power-contact switching, mirror contacts, screw terminals and AC/DC coil technology makes it suitable for motor-control and industrial switching applications requiring auxiliary feedback.
The Siemens 3RT1056-6AF368K combines the functionality of a Siemens SIRIUS power contactor with mirror contacts, screw terminals and an AC/DC coil.
This makes it a suitable solution for industrial motor-control systems where dependable switching and auxiliary contact monitoring are important.
For OEMs, panel builders and automation integrators, the contactor can be incorporated into motor starters, machine-control panels and automated switching systems.
SB Smart supplies Siemens industrial electrical and automation products across Faridabad, Gurgaon/Gurugram, Delhi NCR, Haryana, Noida, Punjab, Mumbai and major cities across India.
Major delivery locations include:
It is a Siemens SIRIUS power contactor featuring mirror contacts, screw terminals and an AC/DC coil.
Mirror contacts provide auxiliary-contact information associated with the state of the main contacts and can be used for suitable monitoring and safety-related control functions.
Yes, the product specification identifies screw terminals.
The product is specified with an AC/DC coil.
It can be used in motor-control panels, industrial automation systems, machine-control equipment, conveyors, pumps, fans, compressors and production machinery, subject to correct electrical ratings.
Yes, contactors of this type can be integrated into PLC-controlled systems when the control circuit and coil requirements are correctly matched.
Yes. It is designed as a power contactor for industrial switching and motor-control applications, subject to the required load and utilization ratings.
It is suitable for OEMs, electrical panel builders, automation integrators, machine manufacturers and industrial maintenance teams.
Verify the motor/load rating, utilization category, operating voltage, coil requirements, terminal configuration and applicable installation requirements before installation.
You can explore the Siemens product range at SB Smart for Siemens contactors, overload relays, motor starters and other industrial automation products.
| Parameter | Specification |
|---|---|
| Manufacturer | Siemens |
| Part Number | 3RT1056-6AF368K |
| Product Series | SIRIUS 3RT1 |
| Product Type | Power Contactor |
| Contact Type | Mirror Contact Elements |
| Main Contacts | 3-Pole |
| Coil Type | AC/DC Electronic Coil |
| Connection Type | Screw Terminals |
| Mounting | DIN Rail or Panel Mount |
| Rated Operational Voltage | Up to 690 V AC |
| Rated Insulation Voltage | 1000 V |
| Mechanical Life | Up to 10 Million Operating Cycles |
| Degree of Protection | IP20 (Front) |
| Standards | IEC 60947-4-1 |
| Application | Motor Switching & Power Control |
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