Siemens Control Relay: DIN-Rail & Surface Relay Mounting, 24V AC Coil Volt, 4NO
The SIEMENS IEC Control Relay is a combination DIN-rail and surface-mounted relay with 4 normally open contacts rated at 10 A and a 24 V AC coil voltage (MPN 3RH21401AB00). 3G Electric interprets your demand for this…
SKU 3G-OTH-37392
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Product Description
The SIEMENS IEC Control Relay is a combination DIN-rail and surface-mounted relay with 4 normally open contacts rated at 10 A and a 24 V AC coil voltage (MPN 3RH21401AB00). 3G Electric interprets your demand for this specific Siemens control component, sourcing it across our 14 industrial departments and backing it with specialist depth in controls.
Frequently Asked Questions
What is the SIEMENS 3RH21401AB00 control relay used for?
The SIEMENS 3RH21401AB00 is an IEC control relay used for switching and controlling industrial loads such as motors, valves, and lighting. It is commonly applied in automation panels, conveyor systems, and machine control circuits where reliable 24V AC coil operation and 4 normally open contacts are required.
What are the specifications of the SIEMENS 3RH21401AB00 relay?
The SIEMENS 3RH21401AB00 is a 4NO, 10 A control relay with a 24V AC coil voltage. It mounts on DIN-rail or surface, making it versatile for panel layouts. The part number is 3RH21401AB00, and it is designed for IEC industrial environments requiring compact, reliable switching.
Where to buy the SIEMENS 3RH21401AB00 relay worldwide?
You can source the SIEMENS 3RH21401AB00 relay worldwide through 3G Electric, a global industrial equipment distributor. We handle full logistics, customs clearance, and delivery to your site. Contact us for availability and lead time; we supply genuine Siemens components for industrial automation needs.
How to install the SIEMENS 3RH21401AB00 relay on a DIN-rail?
To install the SIEMENS 3RH21401AB00 relay, snap it onto a standard 35mm DIN-rail until it locks. For surface mounting, use the provided screw holes. Wire the 24V AC coil to terminals A1 and A2, and connect load circuits to the 4NO contacts rated at 10 A. Ensure proper isolation and follow local electrical codes.
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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.















