SIEMENS 3RK1903-1CB00 Terminal Module

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• • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • SIEMENS 3RK1903-1CB00 SIRIUS ET 200S PM-X Connection Module

                                                                                                                                                                                                                                                                            Correction: The SIEMENS 3RK1903-1CB00 is more accurately a PM-X connection module, not a conventional terminal module. It belongs to the SIMATIC ET 200S motor starter / SIGUARD safety system and plugs onto the TM-X15 S27-01 terminal module. It is used for feedback-circuit monitoring and incoming-feeder protection in external safety circuits, up to Safety Category 4 according to EN 954-1.

                                                                                                                                                                                                                                                                            Item	Specification
                                                                                                                                                                                                                                                                            Brand	SIEMENS
                                                                                                                                                                                                                                                                            Model	3RK1903-1CB00
                                                                                                                                                                                                                                                                            Series	SIMATIC ET 200S / SIGUARD
                                                                                                                                                                                                                                                                            Product Type	PM-X Connection Module
                                                                                                                                                                                                                                                                            Function	Motor Starter Connection / Safety Feedback
                                                                                                                                                                                                                                                                            Application	Feedback Circuit & Infeed Protection
                                                                                                                                                                                                                                                                            Compatible Terminal Module	TM-X15 S27-01
                                                                                                                                                                                                                                                                            Supply Voltage	20.4–28.8 VDC
                                                                                                                                                                                                                                                                            Safety Category	Up to Category 4, EN 954-1
                                                                                                                                                                                                                                                                            Power Consumption	≤10 mA from backplane bus
                                                                                                                                                                                                                                                                            Width	15 mm
                                                                                                                                                                                                                                                                            Dimensions	Approx. 15 × 196.5 × 117.5 mm
                                                                                                                                                                                                                                                                            Weight	Approx. 130 g
                                                                                                                                                                                                                                                                            Protection	IP20

                                                                                                                                                                                                                                                                            Siemens documentation describes the PM-X as a module for connecting an external infeed contactor or other external actuators and integrating them into external safety circuits.

                                                                                                                                                                                                                                                                            Advantages & Features

                                                                                                                                                                                                                                                                            • Designed for ET 200S motor starter systems
                                                                                                                                                                                                                                                                            • Supports external contactor feedback monitoring
                                                                                                                                                                                                                                                                            • Provides incoming-feeder protection
                                                                                                                                                                                                                                                                            • Suitable for safety circuits up to Category 4
                                                                                                                                                                                                                                                                            • Compact 15 mm plug-in design
                                                                                                                                                                                                                                                                            • Mounts directly onto TM-X15 S27-01
                                                                                                                                                                                                                                                                            • Low backplane power consumption

                                                                                                                                                                                                                                                                            Typical Applications

                                                                                                                                                                                                                                                                            • ET 200S motor starters
                                                                                                                                                                                                                                                                            • Emergency-stop safety circuits
                                                                                                                                                                                                                                                                            • Motor starter feedback monitoring
                                                                                                                                                                                                                                                                            • External contactor monitoring
                                                                                                                                                                                                                                                                            • Industrial machine safety systems

.The structure and details of the product：

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