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Frida	+86 15359408275	sales5@mooreplc.com

Product Overview

The Siemens 6ES5 452-8MR11 is a four-channel relay output module in the SIMATIC S5 range. It turns controller commands into relay-contact signals for discrete field circuits. Its contacts are rated for DC and AC loads, while each output is galvanically isolated. The module is listed for S5-90U, S5-95U and S5-100U controllers, plus ET 100U and ET 200U distributed I/O.

Technical Specifications

Parameter	Value
Manufacturer	Siemens
Model	6ES5 452-8MR11
Product Family	SIMATIC S5
Module Type	Relay output module
Number of Outputs	4
Galvanic Isolation	Yes; outputs isolated individually
Relay Supply Voltage	24 V DC rated; 20–30 V DC permissible
Continuous Contact Current	5 A
Resistive Load Switching	Max. 5 A at 250 V AC; 2.5 A at 30 V DC
Inductive Load Switching	Max. 1.5 A at 250 V AC; 0.5 A at 30 V DC
Maximum Switching Frequency	10 Hz

Features

• Four relay-contact outputs
• Galvanic isolation for each output
• AC and DC load-switching capability
• 24 V DC supply for the relays
• Contact protection using switching varistors

Model Benefits
• Four independent control points: Handles separate on/off signals within one module.
• Relay flexibility: Suitable for discrete circuits with differing AC or DC load requirements.
• Individual isolation: Each relay output is isolated, supporting separation between field circuits.
• Defined load ratings: Siemens specifies different switching limits for resistive and inductive loads.

Industries Served

Industry	Typical Application
• Manufacturing	Provides discrete relay signals for machine auxiliaries, indicators and production-line control circuits.
• Water Treatment	Supports on/off control signals for pump-related and plant auxiliary circuits.
• Power Generation	Handles discrete switching signals in S5-based auxiliary control systems.
• Chemical Processing	Connects controller commands to suitable AC or DC field-control circuits.

Frequently Asked Questions

1. How many relay outputs does 6ES5 452-8MR11 have?
It has four relay outputs—not eight. Siemens identifies this exact model as a four-output module.
2. Can it switch both AC and DC loads?
Yes. Siemens specifies contact switching capacities for both 250 V AC and 30 V DC loads. The allowable current depends on whether the load is resistive or inductive.
3. What powers the module’s relays?
The rated relay supply is 24 V DC, with a permissible range of 20–30 V DC.
4. Which S5 systems is this module associated with?
Siemens lists it for 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
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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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