3RF2120-2AA42
Image for illustration purposes only.
If you're unsure whether this part is a perfect match, please contact us.
| Condition | Warehouse | Stock | Price | |
|---|---|---|---|---|
|
New Sealed
Full 24 months warranty Est. shipping: July 09 2026 |
WM66-3R | Enquire now | £23.50 | Add to Cart |
|
New Sealed
Full 24 months warranty Est. shipping: June 11 2026 |
WM59-3R | Low stock | - | Get Quote |
|
New Sealed
Full 24 months warranty Est. shipping: June 09 2026 |
WM44-3R | 10+ in stock | - | Get Quote |
|
New
Full 12 months warranty Est. shipping: June 09 2026 |
WM44-3R | Low stock | - | Get Quote |
|
Used
Full 12 months warranty Est. shipping: June 09 2026 |
WM44-3R | Low stock | - | Get Quote |
|
Used
Full 12 months warranty Est. shipping: June 08 2026 |
WM26-3R | 10+ in stock | - | Get Quote |
| Buying more than one? | Get Quote | |||
Full 12 months warranty
The 3RF2120-2AA42 is a solid-state relay designed for reliable switching applications. It features a single-pole configuration with a width of 22.5 mm and is capable of handling a load current of up to 20 A at voltages ranging from 24 to 230 V AC, with control voltages between 4 and 30 V DC. The relay employs a zero-crossing switching type and provides an isolation voltage of 600 V. It is mounted via screw fastening and is part of the 3RF2 series, making it suitable for various industrial automation and control systems.
Siemens is a global leader in industrial automation, digitalisation, and electrification, offering products such as PLCs, drives, industrial robots, and process control systems. Known for innovation and sustainability, Siemens’ technologies enhance efficiency, safety, and performance across industries like manufacturing, energy, and healthcare.
***CJS Automation is NOT an authorised distributor of Siemens***
Get a Quote
What Happens Next?
Email Confirmation
We’ll send you an email confirming that we’ve received your enquiry and are processing your request.
Dedicated Account Manager
A member of our team will be in contact to confirm the part(s), specifications, and condition.
Your Quote
You will receive a comprehensive quote tailored to your specific needs.
Track Your Shipment
You'll receive tracking details once your order ships so you can follow it's progress.
Online Payments Accepted
If you're happy with your quote, you can pay by Bank Transfer or through our secure payment page using any of the following payment methods, just enter your invoice number and follow the on-screen instructions.
Other Siemens Parts
Closest part codes available to buy online.
GB 
US 
DE 
DK 
ES 
FI 
FR 
IT 
NL 
NO 
PT 
SE