The Siemens 33RT1076-6AV368K is described as a SIRIUS power contactor with mirror contacts, screw terminals and an AC/DC coil, intended for industrial motor control, automation systems and high-power switching applications.
Important: The article number you provided appears to contain a possible typing/formatting issue. I could not verify 33RT1076-6AV368K as an exact Siemens article number, while Siemens documentation and distributor data consistently identify the closely matching 3RT1076-6AV36 as a SIRIUS 3RT power contactor with 500 A AC-3/AC-3e rating, 380–420 V AC/DC coil, 3-pole construction and 2NO + 2NC auxiliary contacts.
The 3RT1076-6AV36 belongs to the Siemens SIRIUS 3RT1 family of power contactors designed for switching and controlling high-power electrical loads.
It is particularly suitable for demanding industrial motor-control applications where reliable switching, auxiliary feedback and high current capacity are required.
Typical applications include:
The verified Siemens 3RT1076-6AV36 configuration is rated for AC-3/AC-3e applications up to 500 A and 250 kW at 400 V.
This makes it suitable for high-power three-phase motor applications where a robust contactor is required.
Potential applications include:
The correct contactor selection should always be based on motor current, utilization category, operating voltage and application duty.
The product description specifies mirror contacts. Mirror contacts are useful where auxiliary contact information is required for monitoring the state of the main contacts.
They can support:
Siemens documentation identifies mirror-contact characteristics within the SIRIUS 3RT contactor family when suitable NC auxiliary contacts are used.
The complete safety function must be designed and validated according to the machine's control architecture and applicable standards.
The verified 3RT1076-6AV36 configuration uses screw terminals for the control and auxiliary circuits, while the main power connections use busbars.
This provides a familiar and practical connection method for electrical panel builders and maintenance teams.
The verified Siemens data for 3RT1076-6AV36 specifies a 380–420 V AC/DC control supply.
This makes the contactor suitable for compatible control systems using the specified AC/DC control voltage.
Always verify the coil voltage on the exact product nameplate before installation.
The verified configuration includes 2 NO + 2 NC auxiliary contacts.
These auxiliary contacts can be used for:
This provides additional flexibility for integration into automated motor-control systems.
The contactor can be integrated into a complete motor-control system with:
A typical control arrangement can be:
PLC / Control System → Contactor Coil → Main Contacts → Motor
Auxiliary contacts can provide feedback to the control system for monitoring and interlocking.
The Siemens 3RT1076-6AV36 can be used across a wide range of industrial applications, including:
For related Siemens industrial electrical and automation products, customers can explore the Siemens product range at SB Smart.
This high-capacity SIRIUS power contactor is suitable for OEM machine manufacturers, electrical panel builders, automation integrators and industrial maintenance professionals.
Its combination of high-current switching, mirror-contact functionality, auxiliary contacts and AC/DC control capability makes it suitable for demanding industrial motor-control systems.
The verified Siemens 3RT1076-6AV36 combines high-current AC-3/AC-3e switching, mirror contacts, 2NO + 2NC auxiliary contacts and AC/DC coil operation in a SIRIUS 3RT power contactor. Siemens data identifies the device as a 500 A, 250 kW at 400 V, 3-pole contactor.
For OEMs, panel builders and automation integrators, it provides a robust solution for high-power motor switching and control-system integration.
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 3RT high-current power contactor for industrial motor-control applications.
The verified product data specifies 500 A AC-3/AC-3e and up to 250 kW at 400 V.
Yes. The product configuration is specified with mirror-contact functionality.
The verified configuration uses screw terminals for the control and auxiliary circuits, with busbar connections for the main circuit.
For the verified 3RT1076-6AV36 article, the coil/control voltage is 380–420 V AC/DC.
The verified configuration includes 2 NO + 2 NC auxiliary contacts.
It is suitable for large motors, conveyors, pumps, compressors, production machinery and high-power industrial automation systems.
Yes. The auxiliary contacts can provide suitable feedback and interlocking signals to a PLC-based control system.
They can support monitoring of the main-contact state, including suitable safety and diagnostic applications.
You can explore the Siemens product range at SB Smart for Siemens SIRIUS power contactors, overload relays and other industrial automation products.
| Parameter | Specification |
|---|---|
| Manufacturer | Siemens |
| Part Number | 3RT1076-6AV368K |
| Product Series | SIRIUS 3RT1 |
| Product Type | Power Contactor |
| Contact Type | Mirror Contact Elements |
| Main Contacts | 3-Pole |
| Auxiliary Contacts | 2NO + 2NC |
| Coil Type | Conventional AC/DC Coil |
| Connection Type | Screw Terminals |
| Main Circuit Connection | Busbar |
| Rated Operational Current (AC-3) | 500 A |
| Motor Rating | 250 kW at 400 V AC |
| Rated Operational Voltage | Up to 1000 V AC |
| Mounting | Panel Mount |
| Mechanical Service Life | Up to 10 Million Operating Cycles |
| Standards | IEC 60947-4-1 |
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