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Siemens SIMATIC S5 CPU 946 Central Processing Unit

Name: Siemens 6ES5946-3UA21
Brand: Siemens
SKU: 6ES5946-3UA21
Availability: InStock

Siemens 6ES5946-3UA21 SIMATIC S5 CPU 946 Processor

● In Stock 12-Mo Warranty Same-Day Dispatch Ships Worldwide 🎖 Veteran-Owned

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ManufacturerSiemens

Part number6ES5946-3UA21

Series SIMATIC S5

CPU Type CPU 946

Application For S5-155U PC

Unit Type Bit Slice Unit (BSU)

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12-month warranty

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Central Processing Unit for SIMATIC S5-155U Functions as Bit Slice Unit Designed for replacement/spare part use Supports multiprocessor mode

Product description

The Siemens 6ES5946-3UA21 is a SIMATIC S5 CPU 946 central processing unit designed for the S5-155U PC. This module functions as a Bit Slice Unit (Control Unit, Arithmetic/Logic Unit, Address Unit) and is available as a spare part only, indicating it is a component for maintenance or replacement of existing systems.

This CPU is intended for use in industrial control applications where SIMATIC S5 systems are still operational. It provides the core processing power for the S5-155U, managing program execution and system control. Its availability as a spare part highlights its importance in maintaining legacy automation infrastructure.

Stanlo Automation, your veteran-owned surplus parts distributor, offers the Siemens 6ES5946-3UA21. Secure this essential spare part for your SIMATIC S5 system from a trusted source, ensuring reliability and prompt delivery.

Technical specifications

Series	SIMATIC S5
CPU Type	CPU 946
Application	For S5-155U PC
Unit Type	Bit Slice Unit (BSU)
Function	Central Processing Unit
Availability	Spare Part Only

Common applications

Legacy Industrial Automation

SIMATIC S5 Systems

Process Control

Machine Control

Compatible systems

Siemens SIMATIC S5-155U PC

Also known as

Siemens SIMATIC S5 CPU 946 CPU 946 Processor Siemens S5 Processor Module

Replaces / compatible with

This CPU module is a direct replacement for existing CPU 946 units within the SIMATIC S5-155U system. It is listed as a spare part only, indicating it is not for new installations.

Technical note

Expert tip

As this is a spare part for legacy systems, ensure compatibility with your specific SIMATIC S5-155U controller configuration.

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Frequently asked questions

What is the Siemens 6ES5946-3UA21 used for and is it for new installations?

The Siemens 6ES5946-3UA21 is a central processing unit for the SIMATIC S5-155U PC. It is available solely as a spare part for replacement purposes and is not intended for new system installations.