Delivery: 20 working days.
6ES7321-1BH02-0AA0
16-channel digital input module for SIMATIC S7-300 PLC systems.
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190,11 €
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Siemens 6ES7321-1BH02-0AA0 is an SM 321 digital input module designed for SIMATIC S7-300 automation systems. It provides 16 isolated 24 V DC digital inputs for connecting switches, sensors and other industrial field devices.
The module uses a 20-pole connection and supports 2-wire sensors. Siemens currently classifies this product as a spare part following its cancellation on October 1, 2025.
Manufacturer: Siemens
Series: SIMATIC S7-300
Product type: Digital input module
Article number: 6ES7321-1BH02-0AA0
Module designation: SM 321
Digital inputs: 16
Rated input voltage: 24 V DC
Permissible voltage range: 20.4–28.8 V DC
Signal “0”: -30 to +5 V
Signal “1”: 13 to 30 V
Input current at signal “1”: Approx. 7 mA
Backplane bus current: Max. 10 mA at 5 V DC
Typical power loss: 3.5 W
Input characteristic: IEC 61131 Type 1
2-wire sensor support: Yes
Shielded cable length: Max. 1000 m
Unshielded cable length: Max. 600 m
Connection: 1 x 20-pole
Dimensions: 40 x 125 x 117 mm
Net weight: 0.237 kg
EAN: 4025515051893
UPC: 040892561715
Country of origin: Germany
Lifecycle status: Discontinued / Spare Part
Product cancellation date: 2025-10-01
