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SIEMENS 6ES7138-4CA01-0AA0 Power Module

Product Description

The SIEMENS 6ES7138-4CA01-0AA0 is a power module (PM-E) designed for the SIMATIC ET 200S distributed I/O system. It provides 24V DC power distribution to connected electronic modules, ensuring stable voltage supply for industrial automation applications. This module features diagnostic capabilities, reverse polarity protection, and compact DIN rail mounting, making it ideal for decentralized control systems .

Key Features & Advantages

Stable Power Supply
- 24V DC output with ±5% voltage accuracy, suitable for sensors, actuators, and I/O modules .
- Reverse polarity protection to prevent damage from incorrect wiring .
Diagnostics & Safety
- LED indicators for PWR (green) and SF (red) to monitor power status and faults .
- Load voltage monitoring with diagnostic alerts for missing voltage or fuse failures .
Compact & Efficient Design
- Dimensions: 81 × 15 × 52 mm (H×W×D), weight: 35g .
- Low power loss (0.1W typical), reducing heat generation in control cabinets .
Industrial Durability
- Operating temperature: -25°C to +60°C, suitable for harsh environments .
- 500V DC isolation between load voltage and backplane bus to prevent interference .
Easy Integration
- DIN rail mounting for quick installation in ET 200S systems .
- Compatible with terminal module TM-E for automatic addressing .

Technical Specifications

Parameter	Specification
Input Voltage	24V DC (19.2–28.8V range)
Output Current	Max 10A (at 60°C)
Power Loss	0.1W (typical)
Isolation Voltage	500V DC
Certifications	CE, RoHS

Applications

Factory automation: Powering I/O modules in conveyor systems .
Process control: Stable voltage supply for sensors and valves .
HVAC systems: Distributed power management in building automation .

Installation & Safety Notes

Wiring: Use shielded cables for noise-sensitive applications .
External protection: Requires fuse (characteristic C) for short-circuit protection .
Note: ET 200S is being phased out; consider ET 200SP for new projects .