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Siemens 3RH21311BM40 IEC Control Relay - Combination DIN-Rail & Surface-Mounted Relays
SiemensCombination DIN-Rail & Surface-Mounted Relays

Siemens 3RH21311BM40 IEC Control Relay

The SIEMENS IEC Control Relay is a combination DIN-rail and surface-mounted relay (MPN 3RH21311BM40) with a 3NO/1NC contact configuration rated at 10 A and a 250V DC coil voltage. 3G Electric interprets this demand…

SKU 3G-OTH-37300

Brand
Siemens
Item
3RH21311BM40 IEC Control Relay
Category
Combination DIN-Rail & Surface-Mounted Relays
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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
3RH21311BM40
Type
3NO/1NC, 10 A
DC Coil Volt
250V

Technical Documents

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Siemens Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The SIEMENS IEC Control Relay is a combination DIN-rail and surface-mounted relay (MPN 3RH21311BM40) with a 3NO/1NC contact configuration rated at 10 A and a 250V DC coil voltage. 3G Electric interprets this demand and delivers it across 14 industrial departments — with specialist depth in controls as an authorised distributor alongside brands such as Schneider, ABB, and Siemens.

Frequently Asked Questions

What is the SIEMENS 3RH21311BM40 IEC control relay used for?

This SIEMENS IEC control relay is used for switching and controlling industrial circuits up to 10 A. It is commonly applied in motor control centers, conveyor systems, and automation panels where reliable DC coil operation at 250 V is required.

What are the specifications of the SIEMENS 3RH21311BM40 relay?

The SIEMENS 3RH21311BM40 is a 3NO/1NC control relay rated for 10 A. It features a 250 V DC coil voltage and mounts on both DIN-rail and surface. This combination mounting flexibility suits panel builders and maintenance teams.

Where to buy the SIEMENS 3RH21311BM40 relay worldwide?

3G Electric supplies the SIEMENS 3RH21311BM40 relay to customers worldwide. We handle full logistics, customs clearance, and delivery to your site. Contact us for a quote and lead time on this IEC control relay.

How to install the SIEMENS 3RH21311BM40 relay on a DIN rail?

To install the SIEMENS 3RH21311BM40, snap the relay onto a standard 35 mm DIN rail until it locks. For surface mounting, use the integrated mounting holes. Always verify the 250 V DC coil polarity and torque connections per the manufacturer's instructions.

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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