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Siemens Auxiliary Contact: 2NO/2NC, 10 A Max Current (AC), Front Mount - Siemens Auxiliary Contacts
SiemensSiemens Auxiliary Contacts

Siemens Auxiliary Contact: 2NO/2NC, 10 A Max Current (AC), Front Mount

The SIEMENS Auxiliary Contact (MPN 3RH29111HA22) is a front-mounted auxiliary contact block with 2NO/2NC contacts and a maximum current rating of 10 A (AC). Designed for Frame Size S3, it is compatible with SIEMENS…

SKU 3G-OTH-38541

Brand
Siemens
Item
Auxiliary Contact: 2NO/2NC, 10 A Max Current
Category
Siemens Auxiliary Contacts
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Technical Specifications

Siemens
Manufacturer Part Number
3RH29111HA22
Type
Front Mount, Front-Mounted
Frame Size
S3
Max Current (AC)
10 A
Compatible with Series
SIRIUS 3RT2 Contactors
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Siemens Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The SIEMENS Auxiliary Contact (MPN 3RH29111HA22) is a front-mounted auxiliary contact block with 2NO/2NC contacts and a maximum current rating of 10 A (AC). Designed for Frame Size S3, it is compatible with SIEMENS SIRIUS 3RT2 contactors.

Frequently Asked Questions

What is the SIEMENS 3RH29111HA22 auxiliary contact used for?

The SIEMENS 3RH29111HA22 auxiliary contact block is used to add extra signaling or control contacts to SIRIUS 3RT2 contactors. It provides 2 normally open and 2 normally closed contacts rated at 10 A AC, enabling remote status indication or interlocking in motor control and automation systems.

What are the specifications of the SIEMENS 3RH29111HA22 auxiliary contact?

The SIEMENS 3RH29111HA22 is a front-mounted auxiliary contact block with 2NO/2NC contacts, rated for 10 A maximum current (AC). It fits Frame Size S3 and is compatible with SIEMENS SIRIUS 3RT2 contactors. The manufacturer part number is 3RH29111HA22.

Where to buy the SIEMENS 3RH29111HA22 auxiliary contact worldwide?

You can source the SIEMENS 3RH29111HA22 auxiliary contact 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 3RH29111HA22 auxiliary contact on a SIRIUS 3RT2 contactor?

To install the SIEMENS 3RH29111HA22, ensure the contactor is de-energized. Snap the front-mounted block onto the SIRIUS 3RT2 contactor of Frame Size S3 until it locks. Wire the 2NO/2NC terminals per your control schematic. Always follow SIEMENS installation guidelines for proper torque and clearance.

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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