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Siemens Control Relay: DIN-Rail & Surface Relay Mounting, 230V AC Coil Volt, 4NO - Combination DIN-Rail & Surface-Mounted Relays
SiemensCombination DIN-Rail & Surface-Mounted Relays

Siemens Control Relay: DIN-Rail & Surface Relay Mounting, 230V AC Coil Volt, 4NO

The SIEMENS IEC Control Relay (MPN 3RH21401AP00) is a combination DIN-rail and surface-mounted relay with a 4NO, 10 A contact configuration and a 230V AC coil voltage. This relay is designed for industrial control…

SKU 3G-OTH-37427

Brand
Siemens
Item
Control Relay: DIN-Rail & Surface Relay Mounting, 230V AC Coil Volt, 4NO
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
3RH21401AP00
Type
4NO, 10 A
AC Coil Volt
230V

Technical Documents

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

Product Description

The SIEMENS IEC Control Relay (MPN 3RH21401AP00) is a combination DIN-rail and surface-mounted relay with a 4NO, 10 A contact configuration and a 230V AC coil voltage. This relay is designed for industrial control applications requiring reliable switching and flexible mounting options.

Frequently Asked Questions

What is the Siemens 3RH21401AP00 control relay used for?

The Siemens 3RH21401AP00 is an IEC control relay used for switching and controlling industrial loads in automation, motor control centers, and panel building. Its 4NO contacts and 10 A rating suit general-purpose switching in machinery, conveyors, and process equipment across 14 industrial departments.

What are the specifications of the Siemens 3RH21401AP00 relay?

The Siemens 3RH21401AP00 is a combination DIN-rail and surface-mount relay with 4 normally open contacts rated at 10 A. It operates on a 230 V AC coil voltage. The part number is 3RH21401AP00, and it is designed for IEC control circuits in industrial environments.

Where to buy Siemens 3RH21401AP00 relays worldwide?

3G Electric supplies the Siemens 3RH21401AP00 control relay to customers 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 your procurement from inquiry to arrival.

How to install a Siemens 3RH21401AP00 control relay?

Mount the Siemens 3RH21401AP00 on a DIN rail or surface using the integrated clip. Wire the 230 V AC coil to terminals A1 and A2, and connect load circuits to the 4NO contact terminals. Ensure the coil voltage matches your supply and that contacts are rated for your load current.

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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