Siemens 3RH21401BF40 IEC Control Relay
The SIEMENS IEC Control Relay (MPN 3RH21401BF40) is a combination DIN-rail and surface-mounted relay with 4 normally open contacts rated at 10 A and a 110 V DC coil voltage. 3G Electric interprets your demand for…
SKU 3G-OTH-37421
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
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Product Description
The SIEMENS IEC Control Relay (MPN 3RH21401BF40) is a combination DIN-rail and surface-mounted relay with 4 normally open contacts rated at 10 A and a 110 V DC coil voltage. 3G Electric interprets your demand for this specific Siemens control component, sourcing it with full accountability across our 14 industrial departments — and we supply far more than is listed. Our specialist depth in controls, alongside authorised distribution for brands like Siemens, ABB, and Schneider, ensures you get the right answer, not just a catalog.
Frequently Asked Questions
What is the Siemens 3RH21401BF40 control relay used for?
The Siemens 3RH21401BF40 is an IEC control relay used for switching and isolating loads in industrial automation, motor control centers, and panel building. Its 4NO, 10 A contacts handle moderate power circuits, while the 110V DC coil suits DC control systems.
What are the specifications of the Siemens 3RH21401BF40 relay?
This Siemens relay has a 4NO contact configuration rated at 10 A, with a 110V DC coil voltage. It mounts on DIN rail or surface, making it versatile for control panels. The part number is 3RH21401BF40, and it is designed for IEC applications.
Where to buy Siemens 3RH21401BF40 relays worldwide?
3G Electric supplies the Siemens 3RH21401BF40 relay to customers worldwide. We handle full logistics, customs clearance, and delivery to your site. Contact us for a quote and lead time; we source genuine Siemens components for industrial applications globally.
How to install a Siemens DIN-rail control relay?
To install the Siemens 3RH21401BF40, snap it onto a standard 35 mm DIN rail or secure it with surface-mount screws. Wire the 110V DC coil to terminals A1 and A2, and connect load circuits to the 4NO contacts. Always follow Siemens installation guidelines and local electrical codes.
Used in
Common applications for SiemensSiemens 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.