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Siemens Auxiliary Contact Block: 1NO/1NC, Front Mount, Front-Mounted - Siemens Auxiliary Contacts
SiemensSiemens Auxiliary Contacts

Siemens Auxiliary Contact Block: 1NO/1NC, Front Mount, Front-Mounted

The SIEMENS Auxiliary Contact Block (SKU 13A138) 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…

SKU 3G-OTH-38164

Brand
Siemens
Item
Auxiliary Contact Block: 1NO/1NC, Front Mount, Front-Mounted
Category
Siemens Auxiliary Contacts
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Technical Specifications

Siemens
Manufacturer Part Number
3RH29111LA11
Type
Front Mount, Front-Mounted, 3RH29111LA11
Frame Size
S3
Compatible with Series
SIRIUS 3RT2 Contactors
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Siemens Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The SIEMENS Auxiliary Contact Block (SKU 13A138) 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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