Description
Schneider b3851
Reliable BACnet controller for seamless building automation integration with multi-protocol support
| Brand | Schneider |
| Model | b3851 |
| Voltage | 24V DC |
| Country of Origin | France |
| Weight | 0.6 kg |
| Dimensions | 160 x 110 x 62 mm |
| Warranty | 24 months |
| Certifications | CE, UL, BTL Listed, BACnet |
| SKU / MPN | b3851 |
| What’s in the box | BACnet Controller unit, mounting clips, installation manual, configuration software CD |
| Protocol | BACnet/IP and BACnet MS-TP |
| Processor | ARM Cortex-M4 32-bit |
| Memory | 16 MB Flash, 8 MB RAM |
| I/O Points | 8 UI, 8 DI, 8 AO, 8 DO |
| Communication | Ethernet 10/100 Mbps, RS-485 |
| Mounting | DIN Rail 35 mm |
Key benefits: Native BACnet/IP and MS-TP support, expandable I/O, web-based configuration, BTL certified, robust Schneider quality, easy integration with BMS
Typical applications: HVAC control, building management systems, energy monitoring, lighting control, smart building automation, commercial facility management
Lifecycle: Active product, expected 10+ years availability with firmware updates
Our Advantages
Exact match for many brands
We make replacements easy with an exact match for almost any brand.
We use OEM catalogs to match your part number
Don't worry about ordering the wrong part by matching your part number with our OEM catalogs.
Competitively priced
Shop with confidence knowing we are offering very competitive pricing!
Orders usually ship the same day
Rest assured your order will arrive as soon as possible knowing we usually ship the same day.
Individually inspected
Before any package is shipped we carefully inspect every product to ensure quality.
Guaranteed for one full year
All of our New Surplus and Reconditioned products come with a 1 year warranty.
Run Business
Building a reputation for quality products at a reasonable price. Our inventory is far more extensive than what can be represented on our web site, so please call one of our knowledgeable salesmen with your specific needs.







Kevin H. –
Profibus modules arrived with proper firmware version. Plug and play.