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Siemens Control Relay: DIN-Rail & Surface Relay Mounting, 24V AC Coil Volt, 3NO/1NC - Combination DIN-Rail & Surface-Mounted Relays
SiemensCombination DIN-Rail & Surface-Mounted Relays

Siemens Control Relay: DIN-Rail & Surface Relay Mounting, 24V AC Coil Volt, 3NO/1NC

SKU 3G-OTH-37276

Brand
Siemens
Item
Control Relay: DIN-Rail & Surface Relay Mounting, 24V AC Coil Volt, 3NO/1NC
Category
Combination DIN-Rail & Surface-Mounted Relays
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Technical Specifications

Siemens
Manufacturer Part Number
3RH21311AB00
Type
3NO/1NC, 10 A
AC Coil Volt
24V
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Siemens Products
3G Electric (S) Pte. Ltd. — Singapore

Frequently Asked Questions

What is the SIEMENS 3RH21311AB00 control relay used for?

The SIEMENS 3RH21311AB00 IEC control relay is used for switching and controlling industrial loads in automation, motor control, and panel-building applications. Its 3NO/1NC contact configuration and 10 A rating suit general-purpose control circuits across manufacturing, HVAC, and process industries.

What are the specifications of the SIEMENS 3RH21311AB00 relay?

This SIEMENS relay has a 24V AC coil voltage, 3 normally open and 1 normally closed contact configuration, and a 10 A current rating. It mounts on DIN-rail or surface, with part number 3RH21311AB00. It is an IEC control relay designed for industrial control panels and machinery.

Where to buy the SIEMENS 3RH21311AB00 relay worldwide?

3G Electric supplies the SIEMENS 3RH21311AB00 control relay worldwide. We handle full logistics, customs clearance, and delivery to your site. As a global industrial solutions provider, we source genuine Siemens parts and support procurement for any location.

How to install the SIEMENS 3RH21311AB00 relay on DIN-rail?

To install the SIEMENS 3RH21311AB00 relay, clip it onto a standard 35 mm DIN-rail until it locks. For surface mounting, use the integrated mounting holes. Wire the 24V AC coil to terminals A1 and A2, and connect load circuits to the appropriate NO/NC contacts per the wiring diagram.

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 combination din-rail & surface-mounted relays. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

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