Reliable power module 6ES7138‑4CA01‑0AA0 for SIMATIC ET 200S systems
The Siemens 6ES7138‑4CA01‑0AA0 is a PM‑E power module designed for the ET 200S distributed I/O lineup. It provides a 24 V DC load voltage with integrated diagnostics, enabling status monitoring for load voltage presence and group errors. Its efficient design ensures minimal power loss and precise power distribution among I/O modules.
Technical specifications
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Module type: PM‑E power module (ET 200S)
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Load voltage: 24 V DC (with reverse polarity protection)
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Input current (no load): approx. 4 mA
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Maximum output current: 10 A @ ≤ 60 °C
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Power loss (typical): 0.1 W
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Diagnostics:
• Green LED “PWR” for rated voltage presence
• Red LED “SF” for group error / load voltage missing -
Potential separation: galvanic isolation between load voltage and backplane bus
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Isolation test voltage: 500 V DC
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Dimensions: 15 mm (W) × 81 mm (H) × 52 mm (D)
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Weight: approx. 35 g
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Operating temperature: 0 °C to +60 °C
Key advantages
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Compact width (15 mm) fits tightly in I/O racks
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Efficient with minimal power loss (0.1 W)
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Supports 10 A output current for robust power delivery
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Integrated diagnostics assists in fast fault detection
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Isolation ensures safety and noise immunity
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Reliable Siemens engineering tailored for ET 200S systems
Application and use cases of 6ES7138‑4CA01‑0AA0
This power module is used in modular I/O racks within industrial automation environments. It delivers stable 24 V DC supply with diagnostics to ET 200S modules in machinery, assembly lines, process plants, and building automation systems. It is ideal wherever a compact, efficient, and monitored power source is required.
About the manufacturer
Siemens is a global leader in industrial automation and control technology. Their SIMATIC ET family, including the ET 200S system, offers scalable, modular I/O solutions designed for durability, flexibility, and performance in demanding environments.