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Siemens 3RH29112XA220MA0 Auxiliary Contact Block - Siemens Auxiliary Contacts
SiemensSiemens Auxiliary Contacts

Siemens 3RH29112XA220MA0 Auxiliary Contact Block

The SIEMENS Auxiliary Switch, model 3RH29112XA220MA0, is a front-mounted auxiliary contact block with a 2NO/2NC contact configuration. Designed for Frame Size S00, it is compatible with the SIRIUS 3RT2 series of…

SKU 3G-OTH-38363

Brand
Siemens
Item
3RH29112XA220MA0 Auxiliary Contact Block
Category
Siemens Auxiliary Contacts
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Local availability & support — Singapore

Local office
20 Woodlands Link #09-05, Singapore 738733
Phone
+65 8878 8355
Delivery
Same-day or next-business-day delivery within Singapore for in-stock items; 7–14 days for factory-order parts from Europe.
Payment
Invoicing in SGD. PayNow, bank transfer, and corporate PO accepted.
Ships to
Singapore

Technical Specifications

Siemens
Manufacturer Part Number
3RH29112XA220MA0
Frame Size
S00
Compatible with Series
SIRIUS 3RT2 Contactors

Technical Documents

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Siemens Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The SIEMENS Auxiliary Switch, model 3RH29112XA220MA0, is a front-mounted auxiliary contact block with a 2NO/2NC contact configuration. Designed for Frame Size S00, it is compatible with the SIRIUS 3RT2 series of contactors from Siemens. This component provides additional switching functionality for industrial control applications.

Frequently Asked Questions

What is the Siemens 3RH29112XA220MA0 auxiliary switch used for?

The Siemens 3RH29112XA220MA0 auxiliary switch provides additional switching contacts for SIRIUS 3RT2 contactors in industrial control panels. It is used to signal contactor status, interlock circuits, or control auxiliary loads in motor control and automation systems.

What are the specifications of the Siemens 3RH29112XA220MA0 auxiliary switch?

This Siemens auxiliary switch has a 2NO/2NC contact configuration, Frame Size S00, and is front-mounted. It is compatible with the SIRIUS 3RT2 series of contactors. The manufacturer part number is 3RH29112XA220MA0.

Where to buy the Siemens 3RH29112XA220MA0 auxiliary switch worldwide?

3G Electric supplies the Siemens 3RH29112XA220MA0 auxiliary switch worldwide. As a global industrial equipment distributor, we handle full logistics, customs clearance, and delivery to your location. Contact us for availability and lead time.

How to install the Siemens 3RH29112XA220MA0 auxiliary switch?

Install the Siemens 3RH29112XA220MA0 auxiliary switch by clipping it onto the front of a compatible SIRIUS 3RT2 contactor of Frame Size S00. Ensure the contactor is de-energized, align the switch with the mounting slots, and press firmly until it locks. Wire according to your control schematic.

Used in

Common applications for Siemens
District cooling plants — LME73 + RWF55 for condenser-water modulation
Inflight catering and food-processing steam boilers — LMG22 with SQN90 air-fuel cross-damper
Hospital steam-plant redundancy — LME41 with QRA2 UV flame detection for dual-fuel boilers
Semiconductor fab process heat — LME23 and SKP55 gas valves on hot-oil heater skids
Container-terminal reefer-deck heating — LMG22 retrofit onto legacy burner racks

Siemens Products

3G Electric supplies Siemens siemens auxiliary contacts. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

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Compatible alternatives & equivalents

Cross-referenced by specification & description
Front-mounted auxiliary contact block with 2 normally open and 2 normally closed contacts. Designed for Frame Size S0 and compatible with SIRIUS 3RT1 contactors. Used to add signal or control contacts for monitoring motor starters, status indication, or interlocking in industrial control panels
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Front-mounted auxiliary contact block with 2 normally open and 2 normally closed contacts. Designed for Frame Size S0 and compatible with SIRIUS 3RT1 contactors. Used to add signal or control contacts for monitoring motor starters, status indication, or interlocking in industrial control panels
SIEMENS Auxiliary Switch: 2NC, Front Mount, Front-Mounted (MPN 3RH29112NF02)
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SIEMENS Auxiliary Switch: 2NC, Front Mount, Front-Mounted (MPN 3RH29112NF02)
SIEMENS Auxiliary Switch: 1NO, Front Mount, Front-Mounted (MPN 3RH1921-GDC-2.5A)
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SIEMENS Auxiliary Switch: 1NO, Front Mount, Front-Mounted (MPN 3RH1921-GDC-2.5A)
SIEMENS Auxiliary Switch: 1NC, Front Mount, Front-Mounted (MPN 3RH1921-1CD01)
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SIEMENS Auxiliary Switch: 1NC, Front Mount, Front-Mounted (MPN 3RH1921-1CD01)
Front-mounted auxiliary contact block for SIRIUS 3RT2 contactors. Provides 2 normally open and 2 normally closed contacts rated at 10 A AC. Used for adding signaling or control contacts in motor control and automation systems
Siemens
Front-mounted auxiliary contact block for SIRIUS 3RT2 contactors. Provides 2 normally open and 2 normally closed contacts rated at 10 A AC. Used for adding signaling or control contacts in motor control and automation systems
Front-mounted auxiliary contact block with 2 normally closed (2NC) contacts. Designed for use with SIRIUS 3RA6 Compact Starters to provide additional switching for monitoring and control in industrial motor control applications
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Front-mounted auxiliary contact block with 2 normally closed (2NC) contacts. Designed for use with SIRIUS 3RA6 Compact Starters to provide additional switching for monitoring and control in industrial motor control applications

More from Siemens

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The Siemens 75AF14 auxiliary contact kit provides one normally open (1NO) contact rated at 10 A AC. It is used for signaling or control in industrial motor starters, contactors, and switchgear, commonly applied in manufacturing, HVAC, and process control systems to monitor equipment status
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The Siemens 75AF14 auxiliary contact kit provides one normally open (1NO) contact rated at 10 A AC. It is used for signaling or control in industrial motor starters, contactors, and switchgear, commonly applied in manufacturing, HVAC, and process control systems to monitor equipment status
Front-mounted auxiliary contact block with one normally open and one normally closed contact. Designed for use with SIRIUS 3RH2 contactor relays, frame size S3. Used to add signaling or control contacts in motor control panels and automation circuits
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Front-mounted auxiliary contact block with one normally open and one normally closed contact. Designed for use with SIRIUS 3RH2 contactor relays, frame size S3. Used to add signaling or control contacts in motor control panels and automation circuits
Front-mounted auxiliary contact block with 4 normally closed (4NC) contacts. Designed for use with SIRIUS 3RT2 contactors in S2 frame size. Provides additional switching functions for status feedback or interlocking in motor control and automation systems
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Front-mounted auxiliary contact block with 4 normally closed (4NC) contacts. Designed for use with SIRIUS 3RT2 contactors in S2 frame size. Provides additional switching functions for status feedback or interlocking in motor control and automation systems
The Siemens 49AB01 is a side-mounted auxiliary contact block with one normally closed (NC) pole, rated for 10 A maximum AC current. It is used to provide status indication or interlocking signals in motor starter and industrial control panel applications
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The Siemens 49AB01 is a side-mounted auxiliary contact block with one normally closed (NC) pole, rated for 10 A maximum AC current. It is used to provide status indication or interlocking signals in motor starter and industrial control panel applications
Auxiliary contact block with 2 normally closed (2NC) contacts, rated for 60 A maximum AC current. Used with compatible contactors and starters to provide status feedback or interlocking signals in motor control circuits
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Auxiliary contact block with 2 normally closed (2NC) contacts, rated for 60 A maximum AC current. Used with compatible contactors and starters to provide status feedback or interlocking signals in motor control circuits
Front-mounted auxiliary contact block with one normally open and one normally closed contact. Designed for Frame Size S3, compatible with SIRIUS 3RT2 series contactors. Used to add signal or control contacts for monitoring or interlocking in motor control circuits
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Front-mounted auxiliary contact block with one normally open and one normally closed contact. Designed for Frame Size S3, compatible with SIRIUS 3RT2 series contactors. Used to add signal or control contacts for monitoring or interlocking in motor control circuits
Auxiliary contact block with one normally open and one normally closed contact. Designed for use with SIRIUS 3RV2 motor starter protectors. Provides additional signal contacts for status indication or control logic in motor control circuits
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Auxiliary contact block with one normally open and one normally closed contact. Designed for use with SIRIUS 3RV2 motor starter protectors. Provides additional signal contacts for status indication or control logic in motor control circuits
Side-mounted auxiliary contact block with one normally open and one normally closed contact. Designed for Frame Size S0 and compatible with SIRIUS 3RT1 contactors. Provides additional switching contacts for signaling, interlocking, or control logic in motor control applications
Siemens
Side-mounted auxiliary contact block with one normally open and one normally closed contact. Designed for Frame Size S0 and compatible with SIRIUS 3RT1 contactors. Provides additional switching contacts for signaling, interlocking, or control logic in motor control applications