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Proudly Stocked in the USA

Siemens 6Es7321-1Bh02-0Aa0
Siemens 6Es7321-1Bh02-0Aa0 Iac Certified Refurbished
Siemens 6ES7321-1BH02-0AA0
Siemens 6ES7321-1BH02-0AA0
Siemens 6ES7321-1BH02-0AA0
Siemens 6ES7321-1BH02-0AA0
Siemens 6ES7321-1BH02-0AA0
Siemens 6ES7321-1BH02-0AA0
Siemens 6Es7321-1Bh02-0Aa0
Proudly Stocked in the USA
  • Siemens 6Es7321-1Bh02-0Aa0
  • Siemens 6Es7321-1Bh02-0Aa0 Iac Certified Refurbished
  • Siemens 6ES7321-1BH02-0AA0
  • Siemens 6ES7321-1BH02-0AA0
  • Siemens 6ES7321-1BH02-0AA0
  • Siemens 6ES7321-1BH02-0AA0
  • Siemens 6ES7321-1BH02-0AA0
  • Siemens 6ES7321-1BH02-0AA0

Siemens 6ES7321-1BH02-0AA0

SKU: 6ES7321-1BH02-0AA0-FS

1 in stock

Estimated delivery: November 10th - November 12th

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Regular price
$622.30
Sale price
$622.30
New
$622.30
In Stock
Ships Today
IAC Certified Refurbished
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Description

The Siemens 6ES7321-1BH02-0AA0 is a SIMATIC S7-300 SM 321 digital input module with 16 isolated inputs for 24 V DC signals. It reads field devices such as pushbuttons, limit switches, proximity sensors, and relay contacts and reports their states to the S7-300 CPU over the backplane bus.

The module mounts on the S7-300 rail and requires a 1x 20-pin front connector (sold separately).

Technical Specifications

Series SIMATIC S7-300, SM 321
Module type Digital input module
Inputs 16 DI, isolated
Input voltage 24 V DC
Front connector 1x 20-pin (required, not included)
Status indication Green LED per channel
Mounting S7-300 mounting rail
Regular price
$622.30
Sale price
$622.30

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  • Eligible for next day delivery

    Same-day shipping on in-stock IAC items ordered by 4:00 PM Eastern, Monday to Friday.

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  • 24 month warranty

    Longer than typical industry coverage: full protection against defects for 2 full years.

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  • Multiple conditions available

    Multiple sourcing paths to help you control costs without compromising performance.

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  • Best catalog

    Large U.S. inventory and fast sourcing for Mitsubishi, Siemens, Schneider & more.

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  • Trusted by 65,000+ customers

    Manufacturers and facilities nationwide rely on us for parts, repairs, and support.

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  • Buying Options

    Covered by Industrial Automation Co.'s 2-Year Warranty.

    Condition SKU Price Warranty Availability Quantity Purchase
    New 6ES7321-1BH02-0AA0-FS $622.30 2-Year IAC Warranty (included) In Stock in the United States!
    IAC Certified Refurbished 6ES7321-1BH02-0AA0-R 2-Year IAC Warranty (included) Call or email for availability
  • Extend your warranty coverage at checkout 2 yrs included free
    Pricing for this item — you’ll pick a term on the checkout page.

    Extended plans are available at checkout on items $200 and up.

    +1 yr → 3 total $93/yr $93.34 · thru 2029
    +3 yrs → 5 total $83/yr $248.92 · thru 2031
    +5 yrs → 7 total $62/yr $311.15 · thru 2033
    BEST VALUE+8 yrs → 10 total $47/yr $373.38 · thru 2036
    Full defect protection · free RMA evaluation & repair · same‑day replacement when in stock
  • Description

    The Siemens 6ES7321-1BH02-0AA0 is a SIMATIC S7-300 SM 321 digital input module with 16 isolated inputs for 24 V DC signals. It reads field devices such as pushbuttons, limit switches, proximity sensors, and relay contacts and reports their states to the S7-300 CPU over the backplane bus.

    The module mounts on the S7-300 rail and requires a 1x 20-pin front connector (sold separately).

    Technical Specifications

    Series SIMATIC S7-300, SM 321
    Module type Digital input module
    Inputs 16 DI, isolated
    Input voltage 24 V DC
    Front connector 1x 20-pin (required, not included)
    Status indication Green LED per channel
    Mounting S7-300 mounting rail
  • Part Number Breakdown

    Part number reference — 6ES7321-1BH02-0AA0

    SIMATIC S7-300, Digital input SM 321, isolated, 16 DI, 24 V DC, 1x 20-pole

    Official Siemens catalog description.

    Product familySIMATIC S7-300 SM 321 Digital Input Module
    SeriesSIMATIC S7-300
    Typeio module

    Questions or need a quote? Call 877-727-8757 or email sales@iac.us.com.

  • Documentation

    Documentation & assistant

    Open the official documents, or ask the assistant and get the page it came from.

    Ask the product assistant

    Answers cite the page they come from. Critical values should be checked on the datasheet.

Quick search

Send in your item for a free evaluation and repair quote. Use our RMA form or email a repair request to service@iac.us.com , and we will contact you to assess your situation and offer shipping information.

Technical Support

Need help with installation, configuration, or troubleshooting? Our technical experts are available to assist you.

  • Phone Support

    (877) 727-8757

  • Email Support

    sales@iac.us.com

Order Your Industrial Automation Parts Today

Industrial Automation Co. is a premier supplier of replacement and aftermarket industrial components. In addition to the 6ES7321-1BH02-0AA0, we offer hundreds of Siemens parts available now in our warehouse. Most of our automation components ship on the same day and are covered by our two-year service warranty. Contact us to order your Siemens replacement parts today.