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Siemens SIMATIC S7 automation module 6ES7221-1BH32-0XB0

Part number6ES7221-1BH32-0XB0EAN / GTIN6940408101920HS code8538.90
MOQ:1

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Product Description

Siemens 6ES7221-1BH32-0XB0 — SIMATIC S7 automation module. Compact controller or expansion module for the S7-1200 or S7-1500 PLC platform. SIMATIC S7-1200, DIGITAL INPUT SM 1221, 16 DI, 24VDC, SINK/SOURCE INPUT.

Technical Specifications

Manufacturer part number (MPN)
6ES7221-1BH32-0XB0
EAN / GTIN
6940408101920
Sales unit
pcs
Product type designation
SM 1221, DI 16x24 V DC
Supply voltage – Rated value (DC)
24 V
permissible range, lower limit (DC)
20.4 V
permissible range, upper limit (DC)
28.8 V
Input current from backplane bus 5 V DC, max.
130 mA
from load voltage L+ (without load), max.
4 mA; per channel
Power supply to the transmitters
present
Power loss, typ.
2.5 W
Number of digital inputs
16
in groups of
4
Input characteristic curve in accordance with IEC 61131, type 1
Yes
Number of simultaneously controllable inputs, up to 40 °C, max.
16
horizontal installation, up to 50 °C, max.
16
Input voltage – Rated value (DC)
24 V
for signal "0"
5 V DC at 1 mA
for signal "1"
15 V DC at 2.5 mA
for signal "0", max. (permissible quiescent current)
1 mA
for signal "1", min.
2.5 mA
for signal "1", typ.
4 mA
Input delay parameterizable
0.2 ms, 0.4 ms, 0.8 ms, 1.6 ms, 3.2 ms, 6.4 ms and 12.8 ms
Cable length shielded, max.
500 m
Cable length unshielded, max.
300 m
Diagnostic alarm
Yes
Potential separation digital inputs between the channels, in groups of
4
IP degree of protection
IP20
CE mark
Yes
CSA approval
Yes
UL approval
Yes
FM approval
Yes
KC approval
Yes
Marine approval
Yes
Fall height, max.
0.3 m; five times, in product package
Ambient temperature during operation – min.
-20 °C
Ambient temperature during operation – max.
60 °C
permissible temperature change
5°C to 55°C, 3°C / minute
Ambient temperature during storage/transportation – min.
-40 °C
Ambient temperature during storage/transportation – max.
70 °C
Air pressure Storage/transport, min.
660 hPa
Air pressure Storage/transport, max.
1 080 hPa
Relative humidity Operation at 25 ℃ without condensation, max.
95 %
required front connector
Yes
Enclosure material (front)
plastic
Dimensions – Width
45 mm
Dimensions – Height
100 mm
Dimensions – Depth
75 mm
Weight, approx.
210 g
Voltage type (supply voltage)
DC
Digital outputs configurable
Yes
Input current at signal 1
4 mA
Type of voltage (input voltage)
DC
Type of digital output
None
Short-circuit protection, outputs available
No
Type of electric connection
Screw connection
Explosion safety category for gas
ATEX gas-ex-protection, Cat. 3G
Explosion safety category for dust
None
Width
45 mm
Height
100 mm
Depth
75 mm
Country of origin
Germany

Standards & Compliance

HS Code
8538.90

Cross References

  • EAN 6940408101920
  • SAP 1000347864
  • Code 8387862

Product Documentation

Document preview: Siemens 6ES7221-1BH32-0XB0 — OEM Datasheet

Catalogue entry last verified: 2026-09-29. A manufacturer datasheet is attached to this entry — confirm application-critical values against it.

Frequently asked questions

Where can I buy 6ES7221-1BH32-0XB0?
6ES7221-1BH32-0XB0 can be ordered from cballast.com as a Siemens catalogue item: request a quotation on this page or email sales@cballast.com, and the order ships worldwide.
What is the manufacturer part number for this Siemens product?
The manufacturer part number is 6ES7221-1BH32-0XB0.
What is the HS code for 6ES7221-1BH32-0XB0?
The customs tariff (HS) code for 6ES7221-1BH32-0XB0 is 8538.90.
Who manufactures 6ES7221-1BH32-0XB0?
6ES7221-1BH32-0XB0 is a Siemens product in the Control & Automation range.
Is a datasheet available for 6ES7221-1BH32-0XB0?
Yes — the 6ES7221-1BH32-0XB0 datasheet can be viewed and downloaded on this page.
What is the minimum order quantity for 6ES7221-1BH32-0XB0?
The minimum order quantity is 1.
Is 6ES7221-1BH32-0XB0 available?
Yes — 6ES7221-1BH32-0XB0 is available to order: fulfilment is from supplier stock in cBallast's European network, dispatched directly from the warehouse to the customer, with the exact lead time stated in the quotation (reply within 24 hours).