Siemens

Siemens 6ES5948-3UA21 SIMATIC S5 Standard CPU

SKU 6ES5948-3UA21

In stock
  • 12-month warranty
  • Free returns within 30 days

  • Manufacturer: Siemens

  • Product No.: 6ES5948-3UA21

  • Country of origin:Germany

  • Product Type: Standard CPUs

  • Barcode: 85371091

  • Payment: T/T, Western Union

  • Weight: 1040g

  • Dimensions: 25.20cm x 19.00cm x 14.20cm

  • Shipping port: Xiamen

  • Warranty: 12 months

The 6ES5948-3UA21 is a SIMATIC S5 CPU 948 central processing unit designed for the S5-155U automation system. Engineered for demanding industrial environments, this controller provides 1664 KB of memory for program execution and data handling. The 6ES5948-3UA21 is a high-performance solution within the legacy SIMATIC S5 architecture, supporting complex process control and logic operations required by large-scale industrial applications.

Features

  • System Compatibility: Specifically designed for integration with the SIMATIC S5-155U PLC platform.
  • Memory Capacity: Features 1664 KB of internal memory for robust data and program management.
  • High Performance: Optimized for stable, long-term operation in critical production environments.
  • Design: Robust modular construction for standard S5 rack mounting.

Applications

  • Large-scale process control systems.
  • Industrial automation requiring legacy S5 architecture stability.
  • Complex logic and sequence control for manufacturing production lines.
  • Upgrades and maintenance for existing S5-155U installations.

Technical Specifications

Attribute Specification
Manufacturer Siemens
Product Range Simatic S5
Subrange S5
Product Type Standard CPUs
CPU Model CPU 948
System Integration S5-155U
Memory Capacity 1664 KB
Dimensions (WxHxD) 25.20 x 19.00 x 14.20 cm
Weight 1.04 kg
Commodity Code 85371091

Installation Guidelines

  • Mounting: Designed for installation in an S5-155U rack system. Ensure the module is properly seated in the designated CPU slot to maintain electrical connection to the backplane bus.
  • Handling: Observe standard electrostatic discharge (ESD) precautions when handling the module to prevent damage to internal circuitry.
  • Power Requirements: Verify that the rack power supply unit is correctly configured for the power requirements of the CPU module.
  • Maintenance: Ensure the environment is free from excessive vibration, dust, and corrosive vapors to ensure the longevity of the module.

FAQ

Which specific PLC system is the 6ES5948-3UA21 designed for?
This CPU is specifically designed for integration with the SIMATIC S5-155U automation system.

What is the memory capacity of the 6ES5948-3UA21?
The CPU has a storage capacity of 1664 KB.

Is this CPU suitable for new automation projects?
This module is part of the SIMATIC S5 line, which is now classified as obsolete; it is typically used for maintenance, upgrades, or replacement in existing S5 installations.

View all FAQs →

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Global Express Shipping

  • Standard Delivery: 4–6 business days via DHL, FedEx, and UPS.
  • Express Dispatch: Same-day dispatch for in-stock orders placed before 2:00 PM (GMT+8).
  • Worldwide Coverage: Serving over 150 countries.

Returns & Warranty

  • 30-Day Guarantee: Returns accepted for in-stock products in original, factory-sealed packaging.
  • 12-Month Warranty: Every industrial component is backed by our technical warranty.
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Global Express Shipping

  • Standard Delivery: 4-6 Business Days via DHL, FedEx, and UPS.
  • Express Dispatch: Same-day dispatch for in-stock orders placed before 2:00 PM (GMT+8).
  • Worldwide Coverage: Serving over 150 countries, including rapid delivery to Saudi Arabia and UAE.

Returns & Warranty

  • 30-Day Guarantee: Returns accepted for in-stock products in original, factory-sealed packaging.
  • 12-Month Warranty: Every industrial component is backed by our professional technical warranty.

Orders are processed and delivered Monday-Friday (excluding public holidays).


For full eligibility, restocking fees, and international return details, please view our official Refund & Return Policy .

TECHNICAL SPECIFICATIONS

Color pattern
Dots
Country of origin
Germany
Power source
AC-powered

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