Siemens SIMATIC S7-300 SM 321 Digital Input Module (6ES7 321-1BH01-0AA0)

SKU 6ES7 321-1BH01-0AA0

Designed for the SIMATIC S7-300 PLC platform, this compact expansion card features 16 isolated 24 V DC digital inputs arranged in two groups of eight. It enables reliable acquisition of binary signals from field devices such as pushbuttons, limit switches, proximity sensors, and selector switches.

Manufacturer

SIEMENS

Manufacturer material ID

6ES7 321-1BH01-0AA0

Category

DIGITAL INPUTS

HS code

85389091

UNSPSC

32151705

Net weight

0.2

Country of origin

DE

Availability

READY TO SHIP

Highlights

Product Series: SIMATIC S7-300 / SM 321
Part Number (MLFB): 6ES7321-1BH01-0AA0 (6ES7 321-1BH01-0AA0)
Number of Inputs: 16 Digital Inputs (2 groups of 8)
Nominal Input Voltage: 24 V DC
Input Characteristic: IEC 61131-2, Type 1
Galvanic Isolation: Optocoupler isolated (500 V DC between channels and backplane)
Front Connector Requirement: 1x 20-Pole Front Connector
Dimensions: (W x H x D) 40 mm x 125 mm x 120 mm

Additional information

Common Applications
Widely deployed in automated conveyor networks, packaging machinery, assembly lines, motor control centers (MCCs), and process plant monitoring setups.