Siemens

Siemens 6ES5948-3UR21 SIMATIC S5 CPU 948R Central Processing Unit

SKU 6ES5948-3UR21

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

  • Manufacturer: Siemens

  • Product No.: 6ES5948-3UR21

  • Country of origin:Germany

  • Product Type: PLC CPU Modules

  • Barcode: 85371091

  • Payment: T/T, Western Union

  • Weight: 1g

  • Dimensions: 32.5 x 34.5 x 9.81 cm

  • Shipping port: Xiamen

  • Warranty: 12 months

Description

The Siemens 6ES5948-3UR21 is a CPU 948R central processing unit designed for the SIMATIC S5-155H automation system. This module is equipped with 1664 KB RAM to support complex control tasks and reliable data processing in demanding industrial environments. Its robust construction ensures consistent performance for continuous operation in production lines and process control applications. As part of the SIMATIC S5 series, this CPU allows for flexible integration and scalability within existing control system architectures.

Features

  • Central Processing Unit (CPU) for SIMATIC S5-155H systems
  • Integrated memory of 1664 KB RAM
  • Engineered for high reliability and continuous operation
  • Maintains compatibility with the broader SIMATIC S5 product family

Applications

  • Industrial automation and process control
  • Manufacturing and production lines
  • Legacy system maintenance and upgrades

Technical Specifications

Specification Value
Manufacturer Siemens
Product Series SIMATIC S5
Compatible System S5-155H
Module Type CPU 948R Central Processing Unit
Memory 1664 KB RAM
Product Lifecycle Status Obsolete
Successor Part Number 6ES5948-3UR22
Shipping Weight 1.00 kg
Package Dimensions (Calculated) 32.5 x 34.5 x 9.81 cm
Commodity Code 85371091
ECCN N
Country of Origin Germany (Estimate)

Installation Guidelines

CRITICAL WARNING: This equipment is sensitive to electrostatic discharge (ESD). Always use a grounded wrist strap and handle the module by its edges. Ensure all power to the S5 rack is de-energized and locked out before installation or removal.
  1. 1 Verify that the target S5-155H rack is completely de-energized and follow all site-specific Lockout/Tagout (LOTO) procedures.
  2. 2 Identify the designated CPU slot in the chassis. Ensure the slot is free of dust, debris, and any obstructions on the backplane connector.
  3. 3 Carefully align the module with the card guides in the slot. Slide the CPU into the rack until the backplane connectors make firm contact. Do not force the module.
  4. 4 Secure the module in the chassis by tightening the retaining screws on the front panel. Ensure a snug fit to maintain proper electrical connection and grounding.
  5. 5 Once all modules are securely installed, remove LOTO devices and re-apply power to the rack. Verify CPU status indicators for correct operation.

FAQ

What automation system is the 6ES5948-3UR21 CPU designed for?
This CPU is specifically designed for use with the Siemens SIMATIC S5-155H automation system.

How much memory does the 6ES5948-3UR21 module have?
The module is equipped with 1664 KB of RAM to handle complex control programs and data processing.

Is the 6ES5948-3UR21 a current product?
No, this product is considered obsolete. The direct successor part number is 6ES5948-3UR22.

What is the shipping weight of this CPU module?
The shipping weight for the 6ES5948-3UR21 is approximately 1.00 kg.

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  • Standard Delivery: 4–6 business days via DHL, FedEx, and UPS.
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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.

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

TECHNICAL SPECIFICATIONS

Country of origin
Germany

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