The Siemens 3RA2922-2H is a mechanical interlock and connector accessory for Siemens SIRIUS 3RT202 and 3RT232 contactors, designed for S0-S0 contactor combinations. It consists of two connecting clips and one anchor for one contactor combination, providing the mechanical connection and lateral interlocking required for compatible reversing contactor assemblies. Siemens currently lists the article as an active product.
For SB Smart, this product is positioned as a Siemens industrial electrical accessory for product supply, procurement, panel-building and replacement requirements, without automation-service claims.
The 3RA2922-2H is part of the Siemens SIRIUS range of accessories for contactors and contactor assemblies. Its purpose is to mechanically connect and interlock two compatible contactors in an assembly. Siemens identifies the exact article as a lateral interlock for 3RT202 and 3RT232 contactors.
A mechanical interlock is particularly useful in reversing starter applications where two contactors must not be mechanically engaged at the same time.
The 3RA2922-2H is suitable for compatible 3RT23 contactor applications, specifically the 3RT232 size-S0 contactor configuration identified by Siemens. It is also specified for 3RT202 contactors.
The correct contactor article numbers should always be checked before ordering to ensure mechanical compatibility.
The accessory is designed for S0-S0 contactor combinations. Product listings and Siemens documentation identify the 3RA2922-2H as the mechanical interlock assembly for 3RT202/3RT232, S0-S0 arrangements.
This makes it suitable for compact reversing contactor assemblies used in motor-control applications.
The main function of the 3RA2922-2H is to provide mechanical interlocking between two contactors.
In a forward/reverse starter, one contactor is used for forward operation and the other for reverse operation. The mechanical interlock helps prevent the two contactors from being mechanically engaged together.
This can complement electrical interlocking in the control circuit.
Siemens specifies that the 3RA2922-2H consists of two connectors and one anchor for one combination.
The complete accessory therefore provides the physical connection required to assemble the compatible contactor pair and establish the lateral interlocking arrangement.
The 3RA2922-2H is suitable for reversing starter applications where two compatible S0 contactors are used.
Typical applications include:
Forward/reverse motor starters
Conveyor systems
Machine tools
Material-handling equipment
Production machinery
Industrial motor-control panels
Motor direction-control applications
Maintenance and replacement assemblies
A reversing starter generally uses both mechanical and electrical interlocking.
Mechanical interlocking:
The 3RA2922-2H provides the physical interlocking between the compatible contactors.
Electrical interlocking:
Auxiliary NC contacts can be incorporated into the control circuit to prevent the opposite contactor coil from being energized.
The complete control arrangement should be designed according to the motor starter and machine requirements.
The 3RA2922-2H has a compact package size of approximately 61 × 105.5 × 46 mm, according to Siemens' current product listing. Siemens lists a net weight of approximately 0.001 kg for the article.
Its compact design is suitable for space-conscious industrial motor-control assemblies.
Siemens currently lists 3RA2922-2H as PLM PM300: Active Product. The current Industry Mall entry was updated in February 2026.
This makes the exact article relevant for current procurement and replacement requirements.
The accessory can be used with compatible S0 contactors for motor direction-control applications.
Suitable for conveyor motors requiring controlled forward and reverse operation.
Useful for machinery where motor direction needs to be changed.
Can be used in compatible motor-control assemblies for industrial handling equipment.
Suitable for industrial panels using S0 reversing contactor arrangements.
Panel builders can use the accessory to create compatible Siemens SIRIUS contactor combinations.
The 3RA2922-2H is suitable for OEM equipment manufacturers, electrical panel builders, industrial maintenance teams, industrial buyers and electrical product dealers.
For SB Smart, this product should be presented as a Siemens industrial electrical accessory for supply, procurement and replacement, rather than as an automation-service product.
Siemens SIRIUS mechanical interlock accessory
Article number 3RA2922-2H
Lateral mechanical interlock
Suitable for 3RT202 and 3RT232 contactors
S0-S0 contactor combination
Consists of 2 connecting clips and 1 anchor
Designed for one contactor combination
Suitable for reversing contactor assemblies
Supports mechanical interlocking
Compatible with Siemens SIRIUS contactor arrangements
Active Siemens product
Mechanical interlocking: Helps prevent simultaneous mechanical engagement of two compatible contactors.
S0-S0 compatibility: Designed for specified Siemens S0 contactor combinations.
Dedicated Siemens accessory: Provides a product-specific assembly solution.
Compact design: Suitable for industrial control-panel assemblies.
Easy procurement: Single article number covers the specified clips and anchor.
Reversing-starter use: Suitable for forward/reverse motor-control assemblies.
Replacement friendly: Useful for maintenance and replacement requirements.
The Siemens 3RA2922-2H is a dedicated mechanical interlock and connector accessory for 3RT202 and 3RT232 contactors in S0-S0 arrangements. Siemens specifies the accessory as consisting of two connectors and one anchor for one combination.
It is a suitable choice for customers looking to buy or source Siemens contactor accessories for reversing starters, motor-control panels, maintenance and replacement applications.
SB Smart supplies Siemens industrial electrical products and accessories in India for industrial buyers, panel builders, maintenance teams and electrical product procurement.
SB Smart supplies Siemens industrial electrical products and accessories across Faridabad, Gurgaon/Gurugram, Delhi NCR, Haryana, Noida, Punjab, Mumbai and other major Indian cities.
Major delivery locations include:
Faridabad
Delhi
Gurgaon/Gurugram
Delhi NCR
Noida
Greater Noida
Haryana
Punjab
Mumbai
Pune
Ahmedabad
Bengaluru
Hyderabad
Chennai
Kolkata
Jaipur
Chandigarh
Lucknow
Indore
Surat
Vadodara
Nagpur
Coimbatore
And other major cities across India
The 3RA2922-2H is a Siemens mechanical interlock and connector accessory for compatible 3RT202 and 3RT232 contactors.
Siemens specifies 3RT202 and 3RT232 contactors for this article.
The product is designed for S0-S0 contactor combinations.
It consists of two connecting clips and one anchor for one contactor combination.
Its main purpose is to provide mechanical connection and interlocking between compatible contactors.
Yes. It is suitable for compatible reversing contactor assemblies where mechanical interlocking is required.
No. It provides mechanical interlocking; electrical interlocking is implemented separately through the appropriate control circuit.
Yes. Siemens currently lists 3RA2922-2H as an active product.
Siemens lists approximately 61 × 105.5 × 46 mm packaging dimensions.
SB Smart supplies Siemens industrial electrical products and accessories in India, including SIRIUS mechanical interlocks, contactor accessories and motor-control components for industrial procurement and replacement requirements.
| Specification | Details |
|---|---|
| Product Name | Mechanical Interlock |
| Manufacturer | Siemens |
| Series | SIRIUS |
| Order Code | 3RA2922-2H |
| Product Type | Contactor Accessory |
| Accessory Type | Mechanical Interlock |
| Compatible Series | Siemens 3RT23 |
| Suitable For | 4 Pole Contactors |
| Function | Mechanical Interlocking |
| Application | Reversing Starter Systems |
| Installation Type | Between Contactors |
| Mounting Method | Direct Mechanical Coupling |
| Safety Function | Prevents Simultaneous Contactor Operation |
| Mechanical Durability | High |
| Maintenance Requirement | Low |
| Industrial Application | Yes |
| Brand | Siemens |
| Condition | New & Genuine Product |
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