Is 6ES7 321-1BH02-0AA0 discontinued?
6ES7 321-1BH02-0AA0 is commonly available as a spare part. Submit an RFQ for pricing and lead time.
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Siemens
6ES7 321-1BH02-0AA0
Siemens 6ES7 321-1BH02-0AA0 Digital Input Module
Siemens
From $165.36In stockSource updated 6/24/2026
Product Description
- Brand: Siemens - Model: SIMATIC S7-300 SM 321 - Type: Digital Input Module - Part number: 6ES7 321-1BH02-0AA0 - Technical specs: - Series: SIMATIC S7-300 - Module type: SM 321 Digital Input Module - Number of inputs: 16 digital inputs - Rated input voltage: 24 VDC - Input characteristic: IEC 61131 Type 1 - Optically isolated inputs - Input current: approx. 7 mA per channel - Signal "1" voltage range: 15–30 VDC - Signal "0" voltage range: 0–5 VDC - Input delay: 1.2–4.8 ms - Isolation: Galvanic isolation between inputs and backplane bus - Front connector: 20-pin - Compatible with switches and 2-wire proximity sensors - Maximum cable length: - 600 m unshielded - 1000 m shielded - Backplane bus current consumption: max. 10 mA - Power loss: approx. 3.5 W - Status indication: LED per input channel - Mounting: S7-300 rack / ET200M system Weight: Approx. 0.22 kg Dimensions: 40 x 125 x 120 mm Country of origin: Germany HS Code: 8538.90
Buy Options
Condition, indicative price, stock, and lead time. Confirm current availability via RFQ.
ConditionPriceAvailabilityLead time
New
Price: $270.59
Availability: Available to order
Lead time: Quoted after RFQ
Used
Price: $165.36
Availability: Available to order
Lead time: Quoted after RFQ
Specifications
- Brand
- Siemens
- Model
- SIMATIC S7-300 SM 321
- Type
- Digital Input Module
- Part Number
- 6ES7 321-1BH02-0AA0
- Series
- SIMATIC S7-300
- Module type
- SM 321 Digital Input Module
- Number of inputs
- 16 digital inputs
- Rated input voltage
- 24 VDC
- Input characteristic
- IEC 61131 Type 1
- Input current
- approx. 7 mA per channel
- Signal "1" voltage range
- 15–30 VDC
- Signal "0" voltage range
- 0–5 VDC
- Input delay
- 1.2–4.8 ms
- Isolation
- Galvanic isolation between inputs and backplane bus
- Front connector
- 20-pin
- Backplane bus current consumption
- max. 10 mA
- Power loss
- approx. 3.5 W
- Status indication
- LED per input channel
- Mounting
- S7-300 rack / ET200M system
- Weight
- Approx. 0.22 kg
- Dimensions
- 40 x 125 x 120 mm
- Country of origin
- Germany
- HS Code
- 8538.90
- Product
- Technical specs:
Before we quote this part
Actual photos when available
Nameplate, condition, and visible wear can be shared before quote when stock photos are not enough.
Test notes for used units
Power-on or function test status is stated when available, with clear condition grading.
Trackable global shipping
DHL, FedEx, UPS, or forwarder options can be quoted with packing photos and tracking details.
Clear DOA boundary
For tested units, quote terms can include 7-day DOA support unless otherwise stated.
Independent sourcing disclaimer
We are not an authorized distributor, reseller, or representative of Siemens, Mitsubishi, Omron, or other manufacturers listed on this site. All product names, trademarks, brands, and logos are the property of their respective owners. Products may be used, refurbished, surplus, or sourced from the secondary market unless otherwise stated.
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FAQ
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What condition options are available for 6ES7 321-1BH02-0AA0?
We list New and Used for 6ES7 321-1BH02-0AA0 (indicative availability and pricing — confirm on RFQ). See our condition policy at https://www.usedautomations.com/condition-codes.