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- Schneider Electric SR3MBU01BD Zelio Logic SR3 Modbus Slave 24 V DC PLC Communication Module Schneider Electric SR3MBU01BD Zelio Logic SR3 Modbus Slave 24 V DC PLC Communication Module
Schneider Electric SR3MBU01BD Zelio Logic SR3 Modbus Slave 24 V DC PLC Communication Module
Schneider Electric SR3MBU01BD Zelio Logic SR3 Modbus Slave 24 V DC PLC Communication Module
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- Description
The Schneider Electric SR3MBU01BD is a Modbus slave communication module for the Zelio Logic SR3 range, supplied at 24 V DC and compatible with all 24 V-supply SR3 B...BD base units. It adds RS485 Modbus RTU/ASCII connectivity over an RJ45 port, letting a Zelio Logic relay be monitored and controlled remotely from a Modbus master.
Technical Specifications
| Reference | SR3MBU01BD |
| Brand | Schneider Electric |
| Range | Zelio Logic |
| GTIN | 3389110840339 |
| Product Type | Modbus slave communication module |
| Rated Supply Voltage (Us) | 24 V DC |
| Product Compatibility | All 24 V-supply modules, SR3 B...BD |
| Communication Port Protocol | Modbus |
| Communication Port Support | RS485 |
| Electrical Connection | 1 x RJ45 connector |
| Wiring Mode | 2 or 4 wires |
| Transmission Frame | RTU / ASCII |
| Transmission Rate | 1200–57600 baud |
| Parity | No / Odd / Even |
| Number of Addresses | 1–247 |
| Local Signalling | 1 LED for communication, 1 LED for power on |
| Connections – Terminals | Screw terminals, 0.25–2.5 mm² |
| IP Degree of Protection | IP20 (terminal block) / IP40 (front panel) |
| Ambient Air Temperature, Operation | -20…40 °C / -20…55 °C |
| Net Weight | 0.11 kg |
Certifications & Standards
- UL
- CSA
- GOST
- GL
- C-tick
- IEC 61000-4-2
- IEC 61000-4-3
- IEC 61000-4-4
- IEC 61000-4-5
- IEC 60068-2-27
Selection Notes
The SR3MBU01BD only fits 24 V DC-supplied SR3 B...BD base units (e.g. SR3B101BD, SR3B261BD) — it is not compatible with the 100–240 V AC FU variants. Its RS485/RJ45 Modbus RTU or ASCII link with up to 247 addresses lets one Zelio Logic relay be polled or written to by a PLC, SCADA or HMI acting as Modbus master, without replacing the relay's I/O wiring.