The Siemens 3RT2047-1AG20 is a high-performance Siemens SIRIUS 3RT2 power contactor designed for reliable switching and control of three-phase motors and industrial electrical loads. It is rated at 110 A in AC-3/AC-3e at 400 V and is suitable for motor applications up to 55 kW at 400 V.
This contactor features a robust 3-pole main circuit, 110 V AC control voltage, and 50/60 Hz operating frequency. Its Size S3 construction makes it suitable for industrial motor-control panels, automation systems, machine-control cabinets and demanding electrical installations.
The 3RT2047-1AG20 includes 1 NO + 1 NC auxiliary contacts for control, feedback, signaling and electrical interlocking functions. Screw terminals provide secure electrical connections for the contactor's circuits.
With its high 110 A AC-3/AC-3e rating and 55 kW motor capacity at 400 V, this contactor is suitable for demanding motor-switching applications including pumps, compressors, conveyors, HVAC equipment and industrial machinery.
Genuine Siemens SIRIUS Power Contactor
Article Number: 3RT2047-1AG20
Product Family: SIRIUS 3RT2
Utilization Category: AC-3e/AC-3
Rated Operational Current: 110 A
Motor Power: 55 kW at 400 V
Rated Operational Voltage: 400 V
Number of Poles: 3-pole
Main Contacts: 3 NO
Auxiliary Contacts: 1 NO + 1 NC
Control Voltage: 110 V AC
Control Frequency: 50/60 Hz
Connection Type: Screw Terminal
Contactor Size: S3
Main Circuit Surge Withstand Voltage: 8 kV
Auxiliary Circuit Surge Withstand Voltage: 6 kV
Front Protection: IP20
Suitable for three-phase motor switching
Suitable for industrial automation and motor-control applications
The Siemens 3RT2047-1AG20 is suitable for:
Three-phase motor control
Motor starting and stopping
Motor Control Centers (MCC)
Industrial automation systems
Machine control panels
Pump control systems
Compressor control
Conveyor systems
HVAC motor applications
Manufacturing machinery
Industrial production equipment
OEM control cabinets
Electrical control panels
Heavy-duty motor switching
Factory automation systems
High 110 A AC-3/AC-3e switching capacity
Suitable for motors up to 55 kW at 400 V
Robust 3-pole power contactor design
110 V AC, 50/60 Hz control coil
1 NO + 1 NC auxiliary contacts for control and signaling
Screw terminals for reliable electrical connections
Durable S3-size construction
High surge withstand capability
Suitable for demanding industrial motor-control applications
Genuine Siemens SIRIUS product
Suitable for OEM, panel-building and maintenance applications
The 3RT2047-1AG20 is a Siemens SIRIUS 3RT2 power contactor designed for three-phase motor switching, with a 110 A AC-3/AC-3e rating, 55 kW motor capacity at 400 V, 3-pole construction and a 110 V AC control coil.
The contactor is rated at 110 A in AC-3 at 400 V.
The specified motor power is 55 kW at 400 V.
The contactor uses a 110 V AC control voltage with 50/60 Hz operation.
It is a 3-pole power contactor with three main switching poles.
The contactor includes 1 NO + 1 NC auxiliary contacts.
The 3RT2047-1AG20 uses screw terminals for electrical connections.
The Siemens 3RT2047-1AG20 is Size S3.
The rated surge withstand voltage is 8 kV for the main circuit and 6 kV for the auxiliary circuit.
Yes. It is designed for AC-3/AC-3e motor-switching applications and is rated for 110 A and 55 kW at 400 V. Final selection should be based on the motor's rated current, power, starting conditions and applicable utilization category.
It can be used in motor control centers, industrial automation panels, pumps, compressors, conveyors, HVAC systems, manufacturing machinery and other industrial motor-control applications.
Yes. Its 110 A rating, 55 kW motor capacity, 110 V AC coil, 1 NO + 1 NC auxiliary contacts and S3 construction make it suitable for demanding industrial motor-control and automation applications.
| Specification | Details |
|---|---|
| Product Name | Power Contactor |
| Brand | Siemens |
| Series | SIRIUS 3RT2 |
| Model Number | 3RT2047-1AG20 |
| SKU | 3RT2047-1AG20 |
| Product Type | Power Contactor |
| Utilization Category | AC-3e / AC-3 |
| Rated Operational Current (AC-3) | 110 A |
| Motor Rating at 400V | 55 kW |
| Number of Poles | 3 Pole |
| Main Contacts | 3 NO |
| Auxiliary Contacts | 1 NO + 1 NC |
| Coil Voltage | 110 V AC |
| Coil Frequency | 50/60 Hz |
| Coil Variant | AG20 |
| Frame Size | S3 |
| Terminal Type | Screw Terminals |
| Rated Insulation Voltage (Ui) | 1000 V |
| Mechanical Life | Up to 10 Million Operations |
| Mounting Type | Panel Mount |
| Operating Temperature | -25°C to +60°C |
| Application | Motor Control & Industrial Switching |
| Product Family | Siemens SIRIUS Contactors |
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