Siemens 6ES5951-7LB14 PS 951 Power Supply

Siemens 6ES5951-7LB14 PS 951 Power Supply Module for Simatic S5-115U/H

Availability: 1 left in stock

DescriptionThe Siemens 6ES5951-7LB14, part of the PS 951 series, is a robust power supply unit engineered specifically for the Simatic...

SKU: 6ES5951-7LB14

Manufacturer: Siemens
Product No.: 6ES5951-7LB14
Product Type: Power Supply Module
Product Origin: Germany
Payment:T/T, Western Union
Weight: 1500g
Shipping port: Xiamen
Warranty: 12 months

Description Reviews

Description

The Siemens 6ES5951-7LB14, part of the PS 951 series, is a robust power supply unit engineered specifically for the Simatic S5-115U and S5-115H programmable logic controller systems. This module provides essential power conversion, transforming standard industrial AC line voltages into the stable 5 V DC supply required for backplane communication, CPU processing, and I/O module operation. Designed for high-availability environments, it ensures consistent performance in demanding industrial facilities, including power generation and automated manufacturing sectors.

Features

Designed for seamless integration with S5-115U and S5-115H rack-based systems.
Wide-range AC input compatibility supporting 110/120 V AC or 220/240 V AC at 50/60 Hz.
Delivers a reliable 3 A output current to the system backplane.
Integrated battery backup compartment supports data retention for internal system memory.
Passive cooling design utilizes an aluminum chassis for effective thermal management.

Applications

This power supply is intended for use in legacy Simatic S5 automation environments. It is suitable for control systems in water treatment plants, heavy machinery control, and industrial process monitoring where stable 5 V DC logic power is critical to preventing system downtime or memory loss during grid fluctuations.

Technical Specifications

Model	6ES5951-7LB14
Series	Simatic S5-115U / S5-115H
Input Voltage	110 to 240 VAC (50/60 Hz)
Output Rating	5 VDC at 3 A
Power Consumption	35 W
Operating Temperature	0 to 60 deg C
Battery Interface	C-Size Lithium Cell (CA-6EW1000-7AA)

Installation Guidelines

Ensure the main power source is disconnected before inserting or removing the module from the S5 rack.
Verify that the input voltage selector matches your local utility power before initial power-up.
Maintain adequate clearance around the module's ventilation windows to allow for proper convective cooling.
Handle the module using standard ESD (Electrostatic Discharge) precautions to prevent damage to internal circuitry.
Secure the module firmly into the rack backplane to ensure reliable electrical contact.

FAQ

What is the primary function of the 6ES5951-7LB14?

This module acts as the central power supply for the Simatic S5-115U/H rack, converting AC line power into the 5 V DC required for the PLC rack's internal components.

Does this module support battery backup?

Yes, it features an integrated compartment for a C-size Lithium battery, which is used to back up the PLC's internal RAM and system registers during power outages.

Is this module compatible with other S5 series racks?

The 6ES5951-7LB14 is specifically designed for the S5-115U and S5-115H series. Please verify your chassis 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.

Mark Thompson

Maintenance Manager, USA

Reliable Source for New Spares

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.

Robert Hoffmann

Engineering Lead, Germany

Top-tier Service and Quality

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.