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Despite price increases by manufacturers (Siemens, Schneider Electric, and others) at the beginning of the year we would like to inform you that our shop prices will remain stable for the upcoming weeks. Profit from best possible discounted prices now.
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Due to a local holiday our offices are closed on Tue 06/01/26. Next possible order processing and shipping: Wed 07/01/26.
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Wed 31/12/25 and Thur 01/01/26 our offices are closed. Fr 02/01/26 order processing and shipping as usual. We wish you a healthy and successful new year.
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+++
Despite price increases by manufacturers (Siemens, Schneider Electric, and others) at the beginning of the year we would like to inform you that our shop prices will remain stable for the upcoming weeks. Profit from best possible discounted prices now.
+++
+++
Due to a local holiday our offices are closed on Tue 06/01/26. Next possible order processing and shipping: Wed 07/01/26.
+++
+++
Wed 31/12/25 and Thur 01/01/26 our offices are closed. Fr 02/01/26 order processing and shipping as usual. We wish you a healthy and successful new year.
+++

>40,000 items ready for despatch in Germany
Express / courier delivery possible
No shop registration required
12 months warranty

>40,000 items ready for despatch in Germany

SIEMENS 6ES7 321⁠-⁠1CH20⁠-⁠0AA0

SIMATIC S7-300, DIGITAL INPUT SM 321, OPTICALLY ISOLATED, 16 DI, DC 48-125V, 1 X 20 PIN

MFS
New original manufacturer-sealed item, intact factory seal, usually current production date and version
FS
New original manufacturer-sealed item, intact factory seal, from surplus stock or similar
1
In stock - ready for despatch
€402.00
NEW
New item in opened original packaging or neutral packaging
1
In stock - ready for despatch
€366.00
RFUR
Refurbished item in opened original packaging or neutral packaging, fully functional
8
In partner stock - ships in 3-5 days
Price on request
Item Inquiry
Full name
Company
Email
Phone
Part Number
Country
VAT-ID number
MessageI am looking for SIEMENS 6ES73211CH200AA0 -RFUR-. Please let me know availability and price.
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Your message has been sent. We will contact you as soon as possible.
USED
Used item in opened original packaging or neutral packaging, fully functional

Product Images

FS

FS

Condition

Availability

Price

MFS

New original manufacturer-sealed item, intact factory seal, usually current production date and version

FS

New original manufacturer-sealed item, intact factory seal, from surplus stock or similar

1

In stock - ready for despatch

€402.00

NEW

New item in opened original packaging or neutral packaging

1

In stock - ready for despatch

€366.00

RFUR

Refurbished item in opened original packaging or neutral packaging, fully functional

8

In partner stock - ships in 3-5 days

Price on request

USED

Used item in opened original packaging or neutral packaging, fully functional

Attractive
fixed prices
More than 40.000 items in stock and ready to ship
Fast processing and daily dispatch of orders
New, used and refurbished products in top quality
12 months warranty on all items

Product Images

FS

FS

Product Details*

Manufacturer
SIEMENS
Category
- S7-300
- Digital peripherals
Part Number / SKU
6ES7321-1CH20-0AA0
EAN / GTIN
4025515069928
UPC / GTIN
040892693003
Weight
0.248 kg
Dimensions
150 mm × 130 mm × 50 mm
Volume
0.001 L
Country of origin
DE
Tariff number (EU)
85389091
Tariff number (US)
8538903000
ECCN number
9N9999
AL number
N

*Information provided without warranty of any kind

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