Images are for reference only. The revision received may differ slightly.
6ES7521-1BL10-0AA0 — Siemens SIMATIC S7-1500 SM521 Digital Input Module 32x DI, 32 digital inputs, 24 V DC
$276.00
SKU: 6ES7521-1BL10-0AA0
In stock (10 available)
Get a Fast Quote
Stock, best price and lead time — reply within one business day.
- ✓ In stock and ready to ship
- ✓ Secure transaction
- ✓ 12-month warranty included
- ✓ 30-day returns
In-stock items ship within 48 hours, worldwide via DHL, FedEx or UPS.
Shipping details →30-day returns on unopened parts in original packaging.
Return policy →12-month warranty on every component. Tested before dispatch.
Warranty details →Product Details
Siemens 6ES7521-1BL10-0AA0 — The 6ES7521-1BL10-0AA0 is a genuine Siemens SIMATIC S7-1500 SM521 digital input module with 32 channels at 24 V DC. With configurable input delays, per-channel diagnostics and hardware interrupts, it captures high-speed sensor signals reliably in S7-1500 and ET 200MP systems. The high-density input module for modern factory automation.
Key Specifications
- SIMATIC S7-1500 digital input module SM521 with 32 inputs
- 24 V DC rated input voltage, IEC 61131 type 3
- Input delay configurable (0.05 ms to 20 ms)
- 4x 8-channel groups with galvanic isolation
- Hardware interrupts and diagnostics per channel
- 35 mm wide module for S7-1500 standard rail
- Value status (QI) information for PROFINET diagnostics
- Front connector with push-in terminals (ordered separately)
Ordering
Reference price shown (12% below the lowest public distributor price). Final pricing is confirmed via inquiry — send your target quantity for a formal quotation.
Genuine Siemens automation components from Museum Technology. 12-month warranty, worldwide shipping. Request a fast quote below.
Documentation
Datasheets, manuals and certificates are available for this part. Tell us which documents you need and we will send them with your quotation.
Request DocumentationFrequently Asked Questions
Is this part genuine?
Yes. Every component we sell is a genuine OEM part, inspected and tested before dispatch.
How fast will my order ship?
In-stock items ship within 48 hours of payment confirmation via DHL, FedEx or UPS, with tracking provided.
What warranty is included?
A 12-month warranty from the date of delivery, covering failures under normal operating conditions.
Can you source obsolete variants of this part?
Yes. Send us the full part number — a nameplate photo helps — and we will confirm availability and lead time.
What Happens Next
- Place your orderor request a quote for volume and obsolete parts.
- We verify & testyour part before it leaves our warehouse.
- Tracked deliveryworldwide within 48 hours for stock items.
What We Check Before Shipping
- ✓ Part number and revision match your order
- ✓ Visual inspection: housing, terminals and labels
- ✓ Functional test on the bench where applicable
- ✓ Firmware / hardware revision verified for controllers
- ✓ Anti-static and shock-proof packaging
Buyer Information
Major credit cards, PayPal and bank transfer. Net terms available for approved business accounts.
Calculated at checkout. DDP (duties paid) quotations available on request for international orders.
Ordering 5+ units? Send your BOM via the quote form for tiered volume pricing.
You May Also Like
In Stock1756-L71 — Allen-Bradley ControlLogix 5570 Processor, 2MB Memory
$4,250.00
In Stock6ES7511-1AK02-0AB0 — Siemens SIMATIC S7-1500 CPU 1511-1 PN
$1,180.00
In Stock5069-L320ER — Allen-Bradley CompactLogix 5380 Processor
$1,890.00
In StockBMEP584040 — Schneider Electric Modicon M580 Standalone Processor, ...
$3,850.00About Us
We supply genuine industrial automation spare parts — circuit breakers, PLC, DCS and sensors — from 40+ manufacturers, backed by a 12-month warranty and worldwide delivery. Learn more about us →