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Siemens 3RH29111LA11 Auxiliary Contact Block - Siemens Auxiliary Contacts
SiemensSiemens Auxiliary Contacts

Siemens 3RH29111LA11 Auxiliary Contact Block

The SIEMENS Auxiliary Contact Block (SKU 3G-OTH-38164) is a front-mounted auxiliary contact block with a 1NO/1NC contact configuration. Designed for Frame Size S3, this Siemens component is compatible with the SIRIUS…

SKU 3G-OTH-38164

Brand
Siemens
Item
3RH29111LA11 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
3RH29111LA11
Type
Front Mount, Front-Mounted, 3RH29111LA11
Frame Size
S3
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 Contact Block (SKU 3G-OTH-38164) is a front-mounted auxiliary contact block with a 1NO/1NC contact configuration. Designed for Frame Size S3, this Siemens component is compatible with the SIRIUS 3RT2 series of contactors. The manufacturer part number is 3RH29111LA11.

Frequently Asked Questions

What is the SIEMENS 3RH29111LA11 auxiliary contact block used for?

The SIEMENS 3RH29111LA11 auxiliary contact block is used to add additional signal or control contacts to SIRIUS 3RT2 contactors. It provides one normally open and one normally closed contact for monitoring or interlocking in motor control and industrial automation circuits.

What are the specifications of the SIEMENS 3RH29111LA11 auxiliary contact block?

The SIEMENS 3RH29111LA11 is a front-mounted auxiliary contact block with a 1NO/1NC contact configuration. It is designed for Frame Size S3 and is compatible with the SIRIUS 3RT2 series of contactors. The manufacturer part number is 3RH29111LA11.

Where to buy the SIEMENS 3RH29111LA11 auxiliary contact block worldwide?

You can source the SIEMENS 3RH29111LA11 auxiliary contact block worldwide through 3G Electric. As a global industrial equipment distributor, 3G Electric handles full logistics, customs clearance, and delivery to your location. Contact us for availability and lead time.

How to install the SIEMENS 3RH29111LA11 auxiliary contact block?

To install the SIEMENS 3RH29111LA11 auxiliary contact block, mount it onto the front of a compatible SIRIUS 3RT2 contactor of Frame Size S3. Ensure the contact block snaps securely into place and wire the 1NO/1NC terminals according to your control circuit diagram. Always follow Siemens installation guidelines.

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 1 normally open and 1 normally closed contact. Designed for frame size S0 and compatible with SIRIUS 3RT2 contactors. Provides additional switching contacts for control and signaling in motor control circuits
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Front-mounted auxiliary contact block with 1 normally open and 1 normally closed contact. Designed for frame size S0 and compatible with SIRIUS 3RT2 contactors. Provides additional switching contacts for control and signaling in motor control circuits
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 2 normally open contacts. Designed for use with SIRIUS 3RT2 contactors to provide additional switching capacity for control circuits, such as status feedback or interlocking in motor control applications
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Front-mounted auxiliary contact block with 2 normally open contacts. Designed for use with SIRIUS 3RT2 contactors to provide additional switching capacity for control circuits, such as status feedback or interlocking in motor control applications
Front-mounted auxiliary contact block with 2 normally open and 2 normally closed contacts. Designed for use with SIRIUS 3RT2 contactors of frame size S2. Provides additional switching contacts for signaling, interlocking, or status feedback in motor control and automation systems
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Front-mounted auxiliary contact block with 2 normally open and 2 normally closed contacts. Designed for use with SIRIUS 3RT2 contactors of frame size S2. Provides additional switching contacts for signaling, interlocking, or status feedback in motor control and automation systems
Side-mounted auxiliary contact block with one normally open and one normally closed contact. Designed for Frame Size S00 and compatible with SIRIUS 3RT2 contactors. Used to add signal or control contacts for monitoring and interlocking in motor control applications
Siemens
Side-mounted auxiliary contact block with one normally open and one normally closed contact. Designed for Frame Size S00 and compatible with SIRIUS 3RT2 contactors. Used to add signal or control contacts for monitoring and interlocking in motor control applications
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

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Side-mounted auxiliary contact block with 2 normally closed (NC) contacts rated for 10 A AC. Designed for use with Siemens SIRIUS 3RH2 contactor relays to add switching capacity for monitoring or interlocking circuits in motor control and automation systems
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Side-mounted auxiliary contact block with 2 normally closed (NC) contacts rated for 10 A AC. Designed for use with Siemens SIRIUS 3RH2 contactor relays to add switching capacity for monitoring or interlocking circuits in motor control and automation systems
Front-mounted auxiliary contact block for SIRIUS 3RT2 contactors, Frame Size S3. Features 3 normally open and 1 normally closed contacts with a maximum AC current rating of 10 A. Used in motor control and automation circuits for status indication or interlocking
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Front-mounted auxiliary contact block for SIRIUS 3RT2 contactors, Frame Size S3. Features 3 normally open and 1 normally closed contacts with a maximum AC current rating of 10 A. Used in motor control and automation circuits for status indication or interlocking
Front-mounted auxiliary contact block with one normally open (1NO) contact for Frame Size S0. Compatible with SIRIUS 3RT1 contactor series. Used for control and signaling in motor control circuits
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Front-mounted auxiliary contact block with one normally open (1NO) contact for Frame Size S0. Compatible with SIRIUS 3RT1 contactor series. Used for control and signaling in motor control circuits
Front-mounted auxiliary contact block for SIRIUS 3RH2 contactor relays. Provides one normally closed (2NC) switching function for industrial control circuits, enabling status feedback or interlocking in motor control and automation systems. Compatible with Frame Size S0
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Front-mounted auxiliary contact block for SIRIUS 3RH2 contactor relays. Provides one normally closed (2NC) switching function for industrial control circuits, enabling status feedback or interlocking in motor control and automation systems. Compatible with Frame Size S0
Side-mounted auxiliary contact block for use with contactors and relays. Provides 2 normally open and 2 normally closed contacts rated at 10 A AC. Used to add extra signal or control circuits for remote status feedback or interlocking in industrial control panels
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Side-mounted auxiliary contact block for use with contactors and relays. Provides 2 normally open and 2 normally closed contacts rated at 10 A AC. Used to add extra signal or control circuits for remote status feedback or interlocking in industrial control panels
Auxiliary contact block with SPDT configuration, rated for 90 A maximum AC current. Provides one normally open and one normally closed contact for status feedback in motor control circuits. Used with contactors and starters to signal open/closed positions to control systems
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Auxiliary contact block with SPDT configuration, rated for 90 A maximum AC current. Provides one normally open and one normally closed contact for status feedback in motor control circuits. Used with contactors and starters to signal open/closed positions to control systems
Side-mounted auxiliary contact block with one normally open and one normally closed circuit. Rated for 10 A maximum AC current. Used to add switching capacity or status feedback to contactors and relays in motor control and automation systems
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Side-mounted auxiliary contact block with one normally open and one normally closed circuit. Rated for 10 A maximum AC current. Used to add switching capacity or status feedback to contactors and relays in motor control and automation systems
Auxiliary contact block for use with SIRIUS 3RV2 motor starter protectors. Provides additional switching contacts for monitoring and control functions in industrial motor protection systems
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Auxiliary contact block for use with SIRIUS 3RV2 motor starter protectors. Provides additional switching contacts for monitoring and control functions in industrial motor protection systems