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3RA1953-3D
Siemens 3RA1953-3D available at EU Automation. Get in touch today for a quick price.
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What happens next?
1. Email confirmation
You will get an email confirming that we have received your enquiry.
2. Dedicated Account Manager
One of our team will be in touch to confirm your part(s) specification and condition.
3. Your quote
You will receive a comprehensive quote tailored to your specific needs.
The Siemens 3RA1953-3D is a three-pole link rail set designed for the infeed side of compatible SIRIUS 3RT1.5 contactor assemblies. Built for size S6 reversing contactor configurations, it provides in-phase connections between contactors, maintaining the same phase arrangement across the supply-side terminals.
This connection accessory provides a structured alternative to individually routed supply-side wiring when assembling or replacing connections in compatible motor control equipment. The 3RA1953-3D is a link rail set rather than a complete contactor assembly and should be selected to match the contactor type, frame size, and assembly configuration.
This connection accessory provides a structured alternative to individually routed supply-side wiring when assembling or replacing connections in compatible motor control equipment. The 3RA1953-3D is a link rail set rather than a complete contactor assembly and should be selected to match the contactor type, frame size, and assembly configuration.
| Specification | Description |
|---|---|
| Manufacturer | Siemens |
| Part Number | 3RA1953-3D |
| Alternative Part Number | 3RA19533D |
| Product Series | SIRIUS |
| Component Type | Link rail set |
| Description | Three-pole connecting rail set for linking the incoming power terminals of compatible Siemens S6 contactor assemblies while maintaining matching phase connections. |
| Application | Reversing contactor assemblies |
| Compatible Contactor Range | Siemens 3RT1.5 |
| Contactor Frame Size | S6 |
| Number of Poles | 3 |
| Connection Location | Infeed side |
| Phase Configuration | In-phase |
What is this link rail set used for?
The Siemens 3RA1953-3D provides in-phase electrical connections on the incoming supply side of compatible contactor assemblies. It is a connection accessory rather than a complete contactor or motor starter.
Which contactor size is this set designed for?
This set is designed for size S6 contactor assemblies. The product datasheet identifies the 3RT1.5 series as its intended application.
What does an in-phase connection mean?
An in-phase connection links corresponding phases between contactors without changing their phase sequence. This set provides that arrangement on the infeed side; it does not create the phase reversal needed for reversing motor rotation.
Does this set connect to the incoming supply or the motor side?
It is intended for the infeed side, also described as the incoming supply side or upper connection position. It should not be treated as an interchangeable substitute for a load-side wiring connector.
How many poles does the link rail set connect?
The set has three poles, providing connections for the three phases of a compatible contactor assembly.
Can this set be used in reversing contactor assemblies?
Yes. The datasheet specifies use with S6 reversing contactor assemblies. The set provides the in-phase incoming connections, while the remaining wiring and interlocking components must match the complete assembly.
Can this set be used in a star-delta starter?
Yes. Siemens lists the 3RA1953-3D as the line-to-delta contactor wiring module for a single incoming supply line in a specified S6 star-delta starter configuration. Compatibility depends on the contactors and wiring accessories selected for that configuration.
Does this set include a mechanical interlock?
No. This item is a link rail set, not a complete assembly kit with a mechanical interlock. Any required interlock must be selected separately for the contactor arrangement.
What should be checked before selecting a replacement?
Check the complete contactor model, S6 frame size, incoming connection position, and required in-phase arrangement. Matching the frame size alone is not sufficient to establish compatibility.
Does this accessory provide motor overload protection?
No. The link rails provide electrical connections between contactors. Motor overload protection requires a separately selected protective device appropriate for the motor and starter configuration.
- Connecting the incoming power terminals of compatible Siemens SIRIUS size S6 contactors using in-phase link rails.
- Providing line-side electrical connections in reversing contactor assemblies for forward and reverse motor control.
- Linking the line and delta contactors in compatible size S6 star-delta motor starter configurations.
- Replacing matching infeed-side link rails in existing Siemens 3RT1.5 contactor assemblies.
- Assembling industrial motor control panels that use compatible Siemens size S6 contactor combinations.
This content has been produced using multiple sources. EU Automation takes no responsibility for the accuracy of this information. Always consult the original equipment manufacturer for the most up to date instructions and information.
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Customer reviews
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Tom Higgins did a great job at getting us the part we needed. He saw a concern with the part a verified before shipping.
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