This product listing is for the part 6ES7321-1BL00-0AA0, manufactured by Siemens, and is a SIMATIC S7-300 SM 321 isolated digital input module, 32 discrete inputs, 24 V DC, 1 × 40‑pole connection..
We have 4 units in-stock and ready to ship from Portugal for $329.50 USD per unit (Warehouse Certifications: ISO 9001:2015).
3-5 day shipping is free with the purchase of 1 unit(s) or more (Free domestic shipping on orders over $100).
Returns are accepted within 30 days if the item(s) received are not what was ordered or are broken.
Part Specifications:
- Number of inputs: 32 count
- Input voltage (rated): 24 V DC
- Input type: Discrete / digital, sink (negative switching)
- Isolation: Optically isolated between channels (channel isolation 120 V) V
- Connection: 1 × 40‑pole connector
- Dimensions (W × H × D): 40 × 125 × 117 mm
- Weight: ≈200 g
- Permissible supply voltage range: 20.4 – 28.8 V DC
- Series: S7-300
- Purpose / function: Provides isolated digital inputs to an S7-300 PLC rack for monitoring discrete signals
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Free domestic shipping on orders over $100!
Stock
Price
Quantity
Ships from

Portugal
Ships in
3-5 Days
Stock
4
units
Portugal
Warehouse
4d2l2f
Certifications
ISO 9001:2015
Price
$329.50
/unit
3-5 Days
MOQ:
1 unit
Minimum Order Quantity
The minimum amount required to make a purchase.
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