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Frida	+86 15359408275	sales5@mooreplc.com

Product Overview

The Siemens 6ES5 451-8MR11 is a SIMATIC S5 digital output module with eight relay-contact outputs. It allows an S5 controller to switch discrete field circuits through relay contacts, including applications using 30 V DC or 230 V AC loads. The module is associated with S5-90U, S5-95U and S5-100U systems, as well as ET 100U and ET 200U distributed I/O.

Technical Specifications

Parameter	Value
Manufacturer	Siemens
Model	6ES5 451-8MR11
Product Family	SIMATIC S5
Module Type	Digital relay output module
Number of Outputs	8
Output Type	Relay contacts
Listed Contact Voltage Classes	30 V DC / 230 V AC
Output Design	Floating
Listed Systems	S5-90U, S5-95U, S5-100U, ET 100U, ET 200U

Features

• Eight relay-contact digital outputs
• Switching for DC and AC field circuits
• Floating output design
• SIMATIC S5 451-series module
• Usable in supported S5 and distributed-I/O configurations

Model Benefits
• Eight control points: One module handles multiple on/off signals.
• Relay-contact outputs: Provides a practical interface for discrete field loads.
• AC/DC application range: Supports control circuits using the listed DC or AC voltage classes.
• S5 system fit: Serves control systems built around the SIMATIC S5 platform.

Industries Served

Industry	Typical Application
• Manufacturing	On/off control signals for production equipment, status lamps and auxiliary machine circuits.
• Power Generation	Discrete control of supporting equipment within S5-based plant systems.
• Water Treatment	Relay outputs for pumps, alarms and other on/off process signals.
• Chemical Processing	Switching discrete field circuits in process-control systems.

Frequently Asked Questions

1. Is 6ES5 451-8MR11 a relay or transistor output module?
It is listed as an eight-channel relay-contact output module.
2. What types of signals can it control?
It is intended for discrete on/off control, such as switching contactors, indicators or other suitable field circuits.
3. Which voltage classes are listed for its relay contacts?
Exact-model listings describe 30 V DC and 230 V AC applications. Load current ratings should not be inferred from the voltage alone.
4. Where is this module used within the SIMATIC S5 range?
Listings associate it with S5-90U, S5-95U, S5-100U, ET 100U and ET 200U systems.

Contact Frida	Mobile / WhatsApp
	+86 15359408275
	Email
	sales5@mooreplc.com

Supply Advantages

✔ In Stock
✔ Worldwide shipping support
✔ Tested before shipment
✔1 Year Warranty

Main Brands

No.	Brand	Main Product Lines
1	ABB	DSQC Series industrial robot parts; Bailey INFI 90; DCS
2	Honeywell	51 Series; MU Series; MC Series; TC Series; CC Series
3	General Electric (GE)	IC693 Series; IC697 Series; IC695 Series; DS200 Series
4	PLC	1756 Series; 1747 Series; 1746 Series
5	Schneider Electric	140 Series
6	Bently Nevada	3500 Series; 3300 Series; 330180 cables
7	Foxboro	FBM203; FBM204; FBM217; FBM231; FCP240; FCP270
8	Westinghouse	1C Series; 5X Series
9	Triconex	3008; 3511; 3625; 3664; 3721; 3700A
10	Siemens	6DD Series; 6DP Series; 6ES5 Series; 6DR Series; 6GK Series

Why choose us?
1.100% original product, 100% quality assurance and the more competitive price.
2.Thoughful service
Professional after-sales service.
3.Quick Shipping
We have large quantities of inventories, can ship immediately.

Company Profile

About Us:A professional supplier of industrial automation spare parts, mainly providing module spare parts for globally renowned brands of DCS systems, PLC systems, robot systems, and large servo control systems.
Main business: Distribution and supply of modules and components from brands including ABB, GE, PLC, Bentley, Honeywell, Siemens, Westinghouse Electric, Emerson, ICS, etc.
Inventory size: With over 9 million inventory parts, we focus on providing discontinued or difficult to purchase hardware.
Service scope: Our clients are located in over 165 countries worldwide, serving multiple industries such as metallurgy, power, chemical, oil and gas.
Product category: Rare, legacy or brand new PLC, HMI, DCS, hard drive, sensor, power supply.

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