The Schneider Electric TM172ASCTB28E is a screw terminal block accessory for the Modicon M172 controller family, providing 28 I/O connection points via a removable screw connector. Used to terminate field wiring to an expansion module — not the module itself, but the interface that makes the I/O serviceable without unwiring the panel. Each unit ships individually and mates to the matching Modicon M172 expansion board via the removable screw connector.
Schneider TM172ASCTB28E Modicon M172 Screw Terminal Block, 2
MPNTM172ASCTB28E
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Schneider Electric Modicon M171/M172 expansion, TM172ASCTB28E screw terminal block, 28 I/Os, green, removable screw connector.
$20.32Ref. price · indicative, final on quote
StockContact for availability
MOQ1 pcs
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Jul 2026
How we verify every order →Specifications
| Parameter | Value |
|---|---|
| Range of product | Modicon M171/M172 |
| Product or component type | Terminal block |
| Accessory (Separate part type) | Screw terminal block |
| Electrical connection | Removable terminal block screw connector |
| Color | Green |
| Category | US1PC1222537 |
| Input (output number) | 28 |
| Accessory (separate part category) | Connection accessory |
Product details
Frequently asked questions
What is TM172ASCTB28E — an I/O module or a terminal block?
It is a screw terminal block accessory for Modicon M171/M172 expansion modules, providing 28 screw-clamp terminals for field wiring. It is not a standalone I/O module.
MPN
TM172ASCTB28E