Siemens 6ES7138-4CF01-0AB0 PROFIsafe Power Module

Fail-Safe Power Supply for ET 200S Systems

The Siemens 6ES7138-4CF01-0AB0 serves as a PM-E F PROFIsafe power module for the SIMATIC ET 200S distributed I/O system . This fail-safe module integrates power distribution with safety functionality, enabling reliable operation in safety-critical applications. It switches the voltage buses P1 and P2 up to Category 3 / SIL 2 via relays, and provides two fail-safe digital outputs up to Category 4 / SIL 3 . The module operates at 24 V DC and supports installations with ungrounded reference potential .

Technical Specifications

Specification	Value
Model	6ES7138-4CF01-0AB0
Product Type	PM-E F PROFIsafe Power Module
Supply Voltage	24 V DC
Safety Outputs	2 fail-safe digital outputs (Cat. 4 / SIL 3)
Bus Switching	Relays for P1/P2 up to Cat. 3 / SIL 2
Dimensions (W x H x D)	30 mm x 81 mm x 52 mm
Weight	Approx. 88 g to 100 g
Protection Rating	IP20
Successor Model	6ES7138-4CF03-0AB0

Key Features and Functionality

The Siemens 6ES7138-4CF01-0AB0 supports the PROFIsafe protocol, ensuring secure communication in safety-oriented control networks . Its relays provide fail-safe disconnection of the voltage buses P1 and P2, meeting Category 3 / SIL 2 requirements for the bus supply . Furthermore, the module’s two integrated fail-safe outputs deliver direct actuator control up to Category 4 / SIL 3, the highest safety integrity level . This dual functionality simplifies safety system design by combining power supply and output control in one compact unit.

Installation and Important Notes

The module plugs into the ET 200S terminal base, simplifying installation. Please note that Siemens has designated this product as end-of-life, with the successor model 6ES7138-4CF03-0AB0 available for new projects . For existing installations, this module remains available as a spare part.