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Siemens SIMATIC S5 CPU 946R PLC 6ES5946-3UR21

Name: Siemens 6ES5946-3UR21
Brand: Siemens
SKU: 6ES5946-3UR21
Availability: InStock

Siemens SIMATIC S5 CPU 946R for S5-155H PLC systems.

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

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ManufacturerSiemens

Part number6ES5946-3UR21

Series SIMATIC S5

Model CPU 946R

System S5-155H

Type PLC CPU

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12-month warranty

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SIMATIC S5-155H compatible CPU 946R model High-availability PLC Fault-tolerant design Siemens automation

Product description

The Siemens SIMATIC S5 CPU 946R, part number 6ES5946-3UR21, is a central processing unit designed for the high-availability SIMATIC S5-155H PLC system. This CPU is engineered for applications requiring enhanced reliability and redundancy, forming the core of a fault-tolerant control system.

This CPU is suitable for critical industrial processes where downtime must be minimized. Applications include power generation, complex manufacturing lines, and safety-related control systems that demand continuous operation and robust performance. The S5-155H system with the 946R CPU ensures high operational availability.

Stanlo Automation, a veteran-owned surplus parts distributor, offers the Siemens SIMATIC S5 CPU 946R (6ES5946-3UR21). Secure reliable performance for your critical systems with our tested surplus components, providing a cost-effective solution for maintaining your SIMATIC S5 installations.

Technical specifications

Series	SIMATIC S5
Model	CPU 946R
System	S5-155H
Type	PLC CPU

Common applications

Power Generation

Critical Manufacturing

Safety Systems

Process Control

Industrial Automation

Redundant Control

Compatible systems

SIMATIC S5-155H PLC systems SIMATIC S5 I/O modules SIMATIC S5 communication modules

Also known as

SIMATIC S5 CPU Siemens S5 PLC 946R CPU

Replaces / compatible with

This CPU is a direct replacement for the 946R CPU within the SIMATIC S5-155H redundant PLC system. Compatible with other S5-155H system modules.

Technical note

Expert tip

Ensure proper configuration of the redundant power supplies and communication modules when implementing the S5-155H system with this CPU.

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Frequently asked questions

What Siemens PLC system is the SIMATIC S5 CPU 946R (6ES5946-3UR21) designed for?

The Siemens SIMATIC S5 CPU 946R (6ES5946-3UR21) is specifically designed for the SIMATIC S5-155H PLC system, which is a redundant, high-availability platform.