Siemens Control Relay: DIN-Rail & Surface Relay Mounting, 24V DC Coil Volt, 3NO/1NC
The SIEMENS IEC Control Relay (MPN 3RH21312FB40) is a combination DIN-rail and surface-mounted relay with a 24V DC coil voltage and 3NO/1NC, 10 A contact configuration. This component supports sourcing across 14…
SKU 3G-OTH-37343
Local availability & support
- Delivery
- Worldwide DHL shipping from Singapore; 7–14 business days door-to-door for most destinations.
- Payment
- Invoicing in USD. Bank transfer (SWIFT) and corporate PO accepted.
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Product Description
The SIEMENS IEC Control Relay (MPN 3RH21312FB40) is a combination DIN-rail and surface-mounted relay with a 24V DC coil voltage and 3NO/1NC, 10 A contact configuration. This component supports sourcing across 14 industrial departments, with specialist depth in controls as an authorised distributor for brands including Siemens, ABB, and Schneider.
Frequently Asked Questions
What is the SIEMENS 3RH21312FB40 control relay used for?
The SIEMENS 3RH21312FB40 is an IEC control relay used for switching and isolating circuits in industrial automation, motor control centers, and panel building. Its 3NO/1NC contact configuration and 10 A rating suit general-purpose control applications across manufacturing, process, and utility sectors.
What are the specifications of the SIEMENS 3RH21312FB40 relay?
This SIEMENS relay has a 24V DC coil voltage, 3 normally open and 1 normally closed contact arrangement, and a 10 A current rating. It mounts on DIN rail or surface, with part number 3RH21312FB40. The compact design fits standard control panels and enclosures.
Where to buy the SIEMENS 3RH21312FB40 relay worldwide?
3G Electric supplies the SIEMENS 3RH21312FB40 control relay to customers worldwide. We handle full logistics, customs clearance, and delivery to your site. As a global industrial solutions provider, we source and deliver genuine Siemens relays for your control system needs.
How to install the SIEMENS 3RH21312FB40 relay on DIN rail?
To install the SIEMENS 3RH21312FB40, clip it onto a standard 35 mm DIN rail until it locks. For surface mounting, use the provided screw holes. Wire the 24V DC coil to terminals A1 and A2, and connect load circuits to the appropriate NO/NC contacts. Ensure power is off during installation.
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.
