Siemens 6ES5951-7ND41 Simatic S5 Power Supply Module

Availability: 5 left in stock

DescriptionThe Siemens 6ES5951-7ND41 is a high-reliability power supply module designed for the Simatic S5-115U, S5-115H, and S5-115F programmable logic controller...

SKU: 6ES5951-7ND41

Manufacturer: Siemens
Product No.: 6ES5951-7ND41
Product Type: PLC Power Supply Module
Product Origin: Germany
Payment:T/T, Western Union
Weight: 1800g
Shipping port: Xiamen
Warranty: 12 months

Description Reviews

Description

The Siemens 6ES5951-7ND41 is a high-reliability power supply module designed for the Simatic S5-115U, S5-115H, and S5-115F programmable logic controller (PLC) systems. This unit provides regulated, galvanically isolated DC power to the PLC backplane, ensuring stable operation and protecting sensitive processor and I/O modules from electrical noise and voltage fluctuations. It is an essential component for maintaining legacy S5 automation infrastructure in demanding industrial environments.

Features

System Compatibility: Specifically engineered for the Siemens Simatic S5-115 series.
Flexible Output Capacity: Supports 7 A at 5 VDC with standard convection cooling, or up to 15 A at 5 VDC when utilized with an active fan subassembly.
Electrical Isolation: Provides galvanic isolation between the primary input and secondary output rails to enhance system safety and noise immunity.
Data Retention Support: Features slots for two AA-size lithium batteries (6ES7971-0BA00) to ensure RAM data retention during power-off states.
Input Range: Operates on a DC input voltage range of 19.2 to 30 VDC.

Applications

This power supply is intended for use in S5-115U, S5-115H, and S5-115F rack configurations. It is widely deployed in heavy manufacturing, water treatment facilities, and critical infrastructure control systems where consistent power delivery is required to prevent logic errors and system resets.

Technical Specifications

Model	6ES5951-7ND41
Input Voltage	19.2 to 30 VDC
Output Current (Convection)	7 A at 5 VDC
Output Current (With Fan)	15 A at 5 VDC
Operating Temperature	0 to 55 degC
Compatibility	Simatic S5-115U, 115H, 115F

Installation Guidelines

Safety First: Always disconnect the primary power source before installing or removing the module from the S5 rack.
Mounting: Ensure the module is fully seated in the designated rack slot to maintain proper electrical contact with the backplane.
Cooling: If the application requires the 15 A output capacity, ensure the active fan assembly is correctly installed and unobstructed to prevent thermal shutdown.
Grounding: Follow standard industrial grounding practices to ensure the chassis is properly bonded to the system earth.
Battery Handling: When installing backup batteries, ensure correct polarity to prevent data loss or potential damage to the memory circuit.

FAQ

Q: Does this power supply include the backup batteries?
A: No, the batteries (6ES7971-0BA00) are typically sold separately. The unit provides the housing and interface for two AA-size lithium batteries.

Q: Can I use this in an S5-135U system?
A: No, this module is specifically designed for the S5-115 series. Please verify your rack model before installation.

What's clients say about us

Excellent Emergency Support!

Our production line was down due to a faulty Bently Nevada monitor. We found it in stock here and they shipped it via DHL immediately. Back in operation within 48 hours—truly a lifesaver for our plant.

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Maintenance Manager, USA

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Finding brand new, original modules is critical for our safety. This team delivers factory-fresh components with full certification. Their commitment to only selling new products makes them our most trusted partner.

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Engineering Lead, Germany

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We have sourced Honeywell and Schneider parts here for two years. Every shipment arrives well-packaged with original factory seals intact. Clear communication and the best lead times in the industry.