The Schneider Electric TM3DM8R is a Modicon TM3 expansion module for M221, M241 and M251 controllers: discrete I/O module, Modicon TM3, 8 IO, 4 inputs, 4 relay outputs, screw, 24V DC.
TM3 modules clip onto the right side of the controller and connect through the bus connector, adding I/O without a separate rack. They are configured in EcoStruxure Machine Expert (Basic for M221).
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Technical data
| Schneider reference | TM3DM8R |
|---|---|
| Product or component type | Discrete I/O module |
| Range compatibility | Modicon M241; Modicon M251; Modicon M221; Modicon M262 |
| Device application | Industrial application |
| Discrete input number | 4 |
| Discrete input logic | Sink or source (positive/negative) |
| Discrete output number | 4 |
| Discrete output logic | Positive or negative |
| Discrete output voltage | 24 V AC for relay outputs; 240 V DC for relay outputs |
| Discrete input current | 7 mA |
| Voltage state 1 guaranteed | Input: 15…28.8 V DC |
| Voltage state 0 guaranteed | 0…5 V input |
| Current state 1 guaranteed | >= 2.5 mA input |
| Current state 0 guaranteed | <= 1 mA input |
| Input impedance | 3.4 kOhm |
| Response time on input | 4 ms (maximum (turn on)); 4 ms (maximum (turn off)) |
| Discrete output current | 2000 mA relay output |
| Minimum switching current | 10 mA 5 V DC |
| Response time on output | <= 10 ms maximum (turn on); <= 5 ms maximum (turn off) |
| Mechanical durability | 20000000 Cycles |
| Safety reliability data | MTBF = 310 years 40 °C |
| Dimensions (W x H x D) | 27.4 x 90 x 84.6 mm |
| Condition | New, original Schneider Electric |
At a glance
- discrete I/O module
- Modicon TM3
- 8 IO
- 4 inputs
- 4 relay outputs
- screw
- 24V DC
Typical applications
- Extra push-buttons, sensors and outputs
- Adding I/O to M221/M241 machines
- Replacing a failed TM3 module
Compatibility and replacement
Up to 7 TM3 modules can be connected to an M221 (more with a bus expansion kit) – check the Schneider manual for the power budget.
Frequently asked questions
Which controllers support it?
Modicon M221, M241 and M251 logic controllers, per Schneider.
How is it configured?
In EcoStruxure Machine Expert – Basic for M221, or Machine Expert for M241/M251.
How fast can you deliver, and is there a warranty?
Air shipping usually takes 5 to 7 days once the part is ready, to almost any country. Each part is new and original with a 1-year warranty. Message us on WhatsApp with the order number for a quotation.
Ordering tips
Send us the full order number from the label of the old part, or a clear photo of the label, together with the quantity you need. We check the number against the current manufacturer data before we quote and tell you if there is a newer replacement.
RendatSP ships from Yiwu, China, to factories worldwide; air delivery usually takes 5 to 7 days once the part is ready. The part is new and original with a 1-year warranty (shipping, payment and warranty). For a quotation, message us on WhatsApp with the order number and quantity. We also have agents in Saudi Arabia, Iraq, the UAE, Egypt, Oman, Libya, Morocco, Mauritania, Yemen, Algeria and Jordan.





