The Siemens 3RT1955-5AB318K is a genuine SIRIUS AC/DC conventional replacement coil designed for compatible 3RT105 and 3RT145 power contactors. This withdrawable operating drive is intended for SIRIUS contactor maintenance and replacement applications where the existing operating coil requires replacement.
The corresponding 3RT1955-5AB31 configuration supports 23–26 V AC/DC control supply, with AC operation at 50/60 Hz. It features a standard/economy operating mechanism and screw-terminal connection. Siemens classifies it under the SIRIUS solenoid coil product family and 3RT19 product type.
This Siemens replacement contactor coil is suitable for industrial motor control panels, electrical control cabinets, motor starter systems, industrial automation, machine control equipment, OEM panels and electrical maintenance applications.
Brand: Siemens
Product Family: SIRIUS
Part Number: 3RT1955-5AB318K
Product Type: Replacement Solenoid Coil / Withdrawable Drive
Product Series: 3RT19
Compatible Contactors: 3RT105, 3RT145
Contactor Size: S6
Coil Type: AC/DC Conventional Coil
Control Supply: AC/DC
AC Voltage: 23–26 V
DC Voltage: 23–26 V
AC Frequency: 50/60 Hz
Operating Mechanism: Standard / Economy Circuit
Connection: Screw Terminal
Design: Withdrawable Drive
Net Weight: Approx. 0.587 kg
Product Lifecycle: PM300 – Active Product for the corresponding 3RT1955-5AB31 configuration
The 3RT1955-5AB318K replacement coil is suitable for:
Siemens SIRIUS 3RT1 contactors
3RT105 contactors
3RT145 contactors
S6-size contactor assemblies
Industrial motor control panels
Electrical control cabinets
Motor starter systems
Industrial automation systems
Machine control panels
Factory automation equipment
OEM electrical panels
Contactor maintenance
Contactor refurbishment
Electrical equipment servicing
Industrial switching applications
Genuine Siemens SIRIUS replacement component
Designed for compatible 3RT105 and 3RT145 contactors
Supports 23–26 V AC/DC control supply
Suitable for 50/60 Hz AC operation
Supports both AC and DC control
Withdrawable operating-drive design
Screw-terminal connection
Standard/economy operating mechanism
Suitable for S6-size contactors
Useful for contactor repair and maintenance
Helps restore the operating function of a compatible contactor
Can eliminate the need to replace an otherwise serviceable complete contactor
Suitable for industrial automation and motor-control applications
The Siemens SIRIUS 3RT1955-5AB318K provides a dedicated replacement solution for the operating mechanism of compatible 3RT105 and 3RT145 contactors. Siemens specifies the corresponding 3RT1955-5AB31 configuration as a withdrawable drive for AC/DC operation with a 23–26 V control supply, standard/economy operating mechanism and screw-terminal connection.
The withdrawable design makes this component useful for maintenance applications where the existing contactor assembly remains suitable for service but its operating coil or drive needs replacement.
It is suitable for motor control, industrial automation, machine control, electrical panels, OEM equipment and factory automation systems.
Siemens replacement coil, Siemens SIRIUS replacement coil, 3RT1955-5AB318K, Siemens 3RT1955-5AB318K, 3RT105 replacement coil, 3RT145 replacement coil, Siemens contactor coil, SIRIUS contactor coil, Siemens power contactor accessories, SIRIUS contactor accessories, 3RT1 replacement parts, 3RT19 spare parts, AC/DC contactor coil, 24V contactor coil, 23–26V AC/DC coil, S6 contactor coil, withdrawable contactor coil, conventional contactor coil, Siemens solenoid coil, contactor operating coil, Siemens motor control accessories, industrial contactor spare parts, motor control panel accessories, industrial automation accessories, electrical control panel spare parts.
Q1. What is Siemens 3RT1955-5AB318K?
It is a Siemens SIRIUS AC/DC conventional replacement coil/withdrawable drive for compatible 3RT105 and 3RT145 contactors.
Q2. Which contactors are compatible with this coil?
The corresponding 3RT1955-5AB31 configuration is specified for 3RT105 and 3RT145 contactors.
Q3. What is the coil voltage?
The specified control supply is 23–26 V AC/DC.
Q4. Can this coil operate on AC and DC?
Yes. Siemens specifies the control supply type as AC/DC.
Q5. What AC frequency does it support?
The AC operating frequency is 50–60 Hz.
Q6. What contactor size is supported?
It is intended for S6-size compatible contactor applications.
Q7. What type of connection does it use?
The corresponding configuration uses a screw-terminal connection.
Q8. Is 3RT1955-5AB318K a complete contactor?
No. It is a replacement operating coil/withdrawable drive, not a complete power contactor.
Q9. What operating mechanism does it use?
It uses a standard/economy operating mechanism.
Q10. Is the coil withdrawable?
Yes. Siemens describes the corresponding 3RT1955-5AB31 as a withdrawable drive.
Q11. What product family does it belong to?
It belongs to the Siemens SIRIUS solenoid coil family and 3RT19 product type.
Q12. What is the primary application of this replacement coil?
It is used to replace the operating mechanism of compatible 3RT105 and 3RT145 power contactors.
Q13. Can it be used in motor-control panels?
Yes. It is suitable for compatible SIRIUS contactors used in industrial motor control and automation systems.
Q14. Is it suitable for contactor maintenance?
Yes. It is intended as a replacement spare component for compatible SIRIUS contactors.
Q15. Does replacing the coil require replacing the complete contactor?
No. If the existing contactor is compatible and otherwise serviceable, the operating drive can be replaced separately.
Q16. What does AC/DC conventional coil mean?
It means the operating mechanism is designed to work with AC or DC control supply within the specified voltage range.
Q17. Is the corresponding 3RT1955-5AB31 an active product?
Yes. Siemens Industry Mall lists 3RT1955-5AB31 as PM300: Active Product.
Q18. What is the approximate weight?
Siemens lists the net weight of the corresponding 3RT1955-5AB31 configuration at approximately 0.587 kg.
Q19. Where is this replacement coil commonly used?
It can be used in industrial motor control panels, automation systems, machine control cabinets, OEM equipment, motor starters and electrical maintenance applications.
Q20. Where can I buy Siemens 3RT1955-5AB318K in India?
The Siemens SIRIUS 3RT1955-5AB318K replacement coil can be sourced from industrial electrical and automation suppliers, subject to current stock and availability.
| Parameter | Specification |
|---|---|
| Product Series | Siemens SIRIUS |
| Model Number | 3RT1955-5AB318K |
| Product Type | AC/DC Conventional Coil (Uc Coil) |
| Function | Contactor Control Coil |
| Coil Type | Conventional AC/DC Coil |
| Compatibility | Siemens SIRIUS Contactors |
| Application | Motor Control & Power Switching |
| Installation Type | Contactor Accessory / Replacement Component |
| Usage | Industrial & Commercial Control Systems |
| Brand | Siemens |
No reviews yet.