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Siemens 6ES5951-7LB21 SIMATIC S5 Power Supply 951

Name: Siemens 6ES5951-7LB21
Brand: Siemens
SKU: 6ES5951-7LB21
Availability: InStock

Siemens 6ES5951-7LB21 SIMATIC S5 Power Supply 951.

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ManufacturerSiemens

Part number6ES5951-7LB21

Part Number 6ES5951-7LB21

Manufacturer Siemens

Series SIMATIC S5

Model Power Supply 951

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12-month warranty

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5V DC output at 3A Wide AC input voltage For SIMATIC S5-115U/H Reliable power for PLC systems Compact design

Product description

The Siemens 6ES5951-7LB21 is a SIMATIC S5 Power Supply 951 specifically designed for the S5-115U and S5-115H automation systems. It accepts a wide input voltage range of 120/230 V AC and provides a stable 5 V DC output with a current rating of 3 A. This module does not include a backup battery.

This power supply is a critical component for the operation of SIMATIC S5 PLCs, providing the necessary voltage to power the CPU and I/O modules within the S5-115U/H chassis. Its reliable performance ensures the continuous operation of automation processes in manufacturing and process industries.

Stanlo Automation, your trusted veteran-owned source for surplus industrial parts, carries the Siemens 6ES5951-7LB21. Equip your SIMATIC S5 systems with dependable power solutions from our extensive inventory.

Technical specifications

Part Number	6ES5951-7LB21
Manufacturer	Siemens
Series	SIMATIC S5
Model	Power Supply 951
For	S5-115U/H
Input Voltage	120/230 V AC
Output Voltage	5 V DC
Output Current	3 A
Backup Battery	No

Common applications

Industrial control panels

Manufacturing automation

Process automation

SIMATIC S5 PLC systems

Legacy automation upgrades

Compatible systems

Siemens SIMATIC S5-115U Siemens SIMATIC S5-115H

Also known as

Siemens S5-115U Power Supply 6ES5951 Power Module Siemens SIMATIC S5 PSU

Replaces / compatible with

This power supply is a direct replacement for the Siemens 951 power supply module used in SIMATIC S5-115U and S5-115H programmable logic controllers. It ensures continued operation of existing S5 installations.

Technical note

Expert tip

Verify the input voltage setting (120V or 230V) on the module before applying power to prevent damage. Ensure proper grounding for safe operation.

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Frequently asked questions

What is the output current rating of the Siemens 6ES5951-7LB21 power supply?

The Siemens 6ES5951-7LB21 SIMATIC S5 Power Supply 951 provides a 5V DC output with a current rating of 3 Amps. This is sufficient to power the CPU and essential modules within the S5-115U/H system.