Siemens 6ES5955-3NC12 SIMATIC S5 Power Supply Unit

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Manufacturer: Siemens
Product No.: 6ES5955-3NC12
Country of origin:Germany
Product Type: Power Supply Units
Barcode: 85389091
Payment: T/T, Western Union
Weight: 2500g
Dimensions: 18.8 x 18.9 x 10.5 cm
Shipping port: Xiamen
Warranty: 12 months

Description

This is a Siemens 6ES5955-3NC12 power supply unit, engineered for the SIMATIC S5 automation platform. It provides a stable and reliable 24V DC output with a current capacity of 18A, specifically designed to power CC 135U and EU 183U system configurations. The unit's robust construction ensures consistent performance and long-term durability in demanding industrial settings, making it an essential component for maintaining system uptime and process integrity.

Features

Provides a regulated 24V DC output at 18A.
Designed for integration with the Siemens SIMATIC S5 series.
Direct compatibility with CC 135U and EU 183U modules.
Engineered for high reliability in continuous industrial operation.
Robust mechanical construction for enhanced durability.

Applications

Legacy Automation System Maintenance
Manufacturing and Assembly Lines
Process Control Systems
Industrial Machinery Power Distribution

Technical Specifications

Specification	Value
Manufacturer	Siemens
Series	SIMATIC S5
Sub-Series	S5-135/155
Model	6ES5955-3NC12
Product Type	Power Supply Unit
Output Voltage	24V DC
Output Current	18 A
Product Lifecycle Status	Obsolete
Shipping Weight	2.50 kg
Commodity Code	85389091
ECCN	N
Country of Origin	Germany (Estimate)
Package Dimensions (Calculated)	18.8 x 18.9 x 10.5 cm

Installation Guidelines

CRITICAL WARNING: Hazardous voltages are present. All installation and maintenance activities must be performed by qualified personnel with all power sources de-energized and locked out (LOTO). Failure to comply can result in severe injury or death.

1 De-energize System: Before installation, completely disconnect and lock out all incoming power to the control cabinet or panel. Verify the absence of voltage using a properly rated test instrument.
2 Mount the Unit: Securely mount the power supply unit into the designated slot within the SIMATIC S5 rack or chassis. Ensure all mounting hardware is properly tightened to establish a solid mechanical and electrical connection to the backplane.
3 Connect Protective Earth (PE): Connect a dedicated protective earth conductor to the designated PE terminal on the unit. This connection is critical for safety and must be the first wire connected and the last disconnected.
4 Connect Input Power: Connect the main AC or DC input power lines to the corresponding input terminals. Ensure the source voltage matches the specifications on the unit's nameplate.
5 System Verification: After all connections are secure, remove locks and re-energize the system. Check for correct status indicators on the power supply and verify that the 24V DC output is stable and within specification before allowing the PLC to enter RUN mode.

Key Features:

#Power Supply Unit #SIMATIC S5

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Returns & Warranty

30-Day Guarantee: Returns accepted for in-stock products in original, factory-sealed packaging.
12-Month Warranty: Every industrial component is backed by our professional technical warranty.

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