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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 3G-OTH-38178) is a front-mounted auxiliary contact block with a 1NO/1NC contact configuration. Designed for Frame Size S0, it is compatible with the SIRIUS 3RT2 series of…

SKU 3G-OTH-38178

Brand
Siemens
Item
Auxiliary Contact Block: 1NO/1NC, Front Mount, Front-Mounted
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
3RH29111NF11
Type
Front Mount, Front-Mounted, 3RH29111NF11
Frame Size
S0
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-38178) is a front-mounted auxiliary contact block with a 1NO/1NC contact configuration. Designed for Frame Size S0, it is compatible with the SIRIUS 3RT2 series of contactors from Siemens. This component provides additional switching contacts for control and signaling applications.

Frequently Asked Questions

What is the SIEMENS 3RH29111NF11 auxiliary contact block used for?

The SIEMENS 3RH29111NF11 auxiliary contact block provides additional 1NO/1NC switching contacts for control and signaling in industrial automation. It is designed for front mounting on SIRIUS 3RT2 contactors with frame size S0, enabling remote status feedback and interlocking in motor control circuits.

What are the specifications of the SIEMENS 3RH29111NF11 auxiliary contact block?

The SIEMENS 3RH29111NF11 is a front-mounted auxiliary contact block with a 1NO/1NC contact configuration. It is compatible with SIRIUS 3RT2 contactors and has a frame size of S0. The manufacturer part number is 3RH29111NF11, and it is produced by Siemens.

Where to buy the SIEMENS 3RH29111NF11 auxiliary contact block worldwide?

3G Electric supplies the SIEMENS 3RH29111NF11 auxiliary contact block 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; we source and deliver this Siemens component to any country.

How to install the SIEMENS 3RH29111NF11 auxiliary contact block?

To install the SIEMENS 3RH29111NF11, mount it onto the front of a compatible SIRIUS 3RT2 contactor with frame size S0. Ensure the contactor is de-energized and locked out. Snap the block into the designated slot until it clicks. Wire the 1NO and 1NC terminals per your control schematic, then test operation.

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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