The Siemens 3RT2327-1AF00 is a genuine Siemens SIRIUS 3RT23 four-pole contactor designed for reliable switching of electrical loads in industrial control and automation applications. It is rated for 50 A in AC-1 utilization category at 400 V and 40°C, making it suitable for switching non-inductive or low-inductive loads such as resistive loads, heating equipment and other industrial electrical applications. Siemens lists this model as an active product in the SIRIUS 3RT.3 four-pole contactor family.
The 3RT2327-1AF00 Siemens contactor features a 110 V AC control voltage at 50 Hz and includes 1 NO + 1 NC auxiliary contacts for control, signaling and interlocking functions. The contactor uses screw terminals for electrical connections and has a compact Size S0 construction suitable for industrial control cabinets.
With its 4-pole configuration, the contactor provides four normally open main contacts for switching suitable AC loads. The integrated auxiliary contacts can be used for control circuits, status indication, electrical interlocking and automation functions.
The Siemens 3RT2327-1AF00 is particularly suitable for AC-1 load switching applications, including resistive loads, heating systems, HVAC equipment, lighting control, power distribution and industrial automation panels. It should be selected according to the actual load type and applicable AC-1 rating rather than being treated as a general-purpose AC-3 motor contactor.
The contactor has a rated insulation voltage of 690 V and a rated impulse withstand voltage of 6 kV. Siemens documentation specifies a typical mechanical service life of up to 10 million switching cycles. The operating ambient temperature range is -25°C to +60°C.
Genuine Siemens SIRIUS Contactor
Article Number: 3RT2327-1AF00
Product Family: SIRIUS 3RT.3
Utilization Category: AC-1
Rated Operational Current: 50 A at 400 V / 40°C
Number of Poles: 4-pole
Main Contacts: 4 NO
Auxiliary Contacts: 1 NO + 1 NC
Control Voltage: 110 V AC
Control Frequency: 50 Hz
Connection Type: Screw Terminal
Contactor Size: S0
Rated Insulation Voltage: 690 V
Rated Impulse Withstand Voltage: 6 kV
Front Protection: IP20
Finger-safe design
Mechanical service life: typically up to 10 million switching cycles
Operating Ambient Temperature: -25°C to +60°C
Storage Temperature: -55°C to +80°C
Suitable for AC-1 load switching applications
Suitable for screw fixing and snap-on mounting on compatible DIN rails
The Siemens 3RT2327-1AF00 AC-1 contactor is suitable for:
Resistive load switching
Industrial heating systems
Heating equipment
HVAC control systems
Lighting control applications
Power distribution panels
Industrial automation panels
Machine control cabinets
Industrial electrical systems
Manufacturing equipment
OEM control cabinets
Factory automation
AC load switching
Electrical control panels
Industrial switching applications
Reliable 50 A AC-1 switching capacity
Suitable for 400 V AC load-switching applications
Four-pole design provides flexible circuit switching
Integrated 1 NO + 1 NC auxiliary contacts
110 V AC, 50 Hz control coil
Screw terminals provide secure electrical connections
Compact S0-size construction
Suitable for industrial control cabinets
High 690 V insulation voltage
6 kV impulse withstand capability
Long mechanical service life
Suitable for automation and machine-control applications
Genuine Siemens SIRIUS product
Suitable for OEM, panel-building and maintenance applications
The 3RT2327-1AF00 is a Siemens SIRIUS 3RT23 four-pole AC-1 contactor rated at 50 A at 400 V and 40°C, with a 110 V AC, 50 Hz control coil and 1 NO + 1 NC auxiliary contacts.
The contactor is rated for 50 A AC-1 at 400 V and 40°C.
The control coil is rated for 110 V AC at 50 Hz.
It is a 4-pole contactor with 4 normally open main contacts.
The contactor includes 1 NO + 1 NC auxiliary contacts.
The contactor is Size S0.
The 3RT2327-1AF00 uses screw terminals for electrical connections.
The rated insulation voltage is 690 V.
The rated impulse voltage withstand capability is 6 kV.
The typical mechanical service life is up to 10 million switching cycles.
The specified operating ambient temperature range is -25°C to +60°C. The storage temperature range is -55°C to +80°C.
The 3RT2327-1AF00 is an AC-1 contactor and should primarily be selected for appropriate AC-1 loads. For conventional motor switching, an appropriately rated AC-3 contactor should be selected based on the motor's current, power and starting conditions.
It can be used for resistive loads, heating systems, HVAC equipment, lighting control, industrial automation panels, power distribution and other AC-1 switching applications.
Yes. Its 50 A AC-1 rating, four-pole configuration, 110 V AC coil, integrated auxiliary contacts and compact S0 design make it suitable for a wide range of industrial electrical control and switching applications.
| Specification | Details |
|---|---|
| Product Name | Power Contactor |
| Brand | Siemens |
| Series | SIRIUS 3RT23 |
| Model Number | 3RT2327-1AF00 |
| SKU | 3RT2327-1AF00 |
| Product Type | Power Contactor |
| Utilization Category | AC-1 |
| Rated Operational Current (AC-1) | 50 A |
| Number of Poles | 4 Pole |
| Main Contacts | 4 NO |
| Auxiliary Contacts | 1 NO + 1 NC |
| Coil Voltage | 110 V AC |
| Frequency | 50 Hz |
| Frame Size | S0 |
| Terminal Type | Screw Terminals |
| Rated Insulation Voltage (Ui) | 690 V |
| Surge Voltage Resistance | 6 kV |
| Protection Class | IP20 |
| Mechanical Life | 10 Million Operations |
| Mounting Type | DIN Rail / Panel Mount |
| Operating Temperature | -25°C to +60°C |
| Product Family | Siemens SIRIUS Contactors |
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