Siemens
Siemens 3RT1944-5AC21 Magnet Coil for Size S3
Siemens 3RT1944-5AC21 Magnet Coil.
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12-Mo Warranty
Same-Day Dispatch
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🎖 Veteran-Owned
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12-month warranty
All units tested
Same-day dispatch
Order by 2pm CST
Worldwide delivery
US, EU, Asia, Middle East
Veteran-owned
CAGE: 9NK75
Energizes Size S3 contactors
24V AC operation
50/60 Hz compatible
Screw terminals for secure connection
Part of the SIRIUS line
Product description
The Siemens 3RT1944-5AC21 is a magnet coil designed for SIRIUS Size S3 contactors. It features screw terminals and operates on 24V AC at 50/60 Hz.
This coil is essential for energizing the contactor, enabling it to switch electrical circuits. It is a key component in motor control and power switching applications.
Stanlo Automation, a veteran-owned surplus parts distributor, offers this part. We ensure quality and availability for your industrial automation needs.
Technical specifications
| Type | Magnet Coil |
| For Contactor Size | S3 |
| Voltage | 24 V AC |
| Frequency | 50/60 Hz |
| Terminal Type | Screw Terminal |
| Series | SIRIUS 3RT19 |
Common applications
Motor control
Industrial automation
Power switching
Control panels
Machinery control
Compatible systems
Siemens SIRIUS 3RT1 Size S3 Contactors
Also known as
Siemens 3RT1944-5AC21 coil
3RT1944-5AC21 contactor coil
Siemens S3 coil
Replaces / compatible with
This is a phased-out product. The successor is SIRIUS 3RT2.
Technical note
Expert tip
Ensure the control voltage is correctly set to 24V AC when installing the 3RT1944-5AC21 coil to prevent coil damage or improper operation.What happens next?
1
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2
Account manager assigned
Confirms your part's spec and condition
3
Your quote delivered
Tailored to your specific requirements
Frequently asked questions
What is the voltage and frequency rating for the Siemens 3RT1944-5AC21 magnet coil?
The Siemens 3RT1944-5AC21 magnet coil is rated for 24 Volts AC and operates at both 50 Hz and 60 Hz frequencies.