Siemens 3SU1550-1AA10-1CA0 Universal 3‑Way Holder, Metal/Plastic, 1 NC Screw Terminal Original Brand New

Overview

The Siemens 3SU1550-1AA10-1CA0 is a core component within the modular SIRIUS ACT range, designed to securely house and connect control and signaling devices. This universal 3-way holder is engineered for maximum flexibility, supporting the assembly of up to three individual modules (e.g., contact blocks or LED elements). Its robust construction combines plastic and metal components, ensuring durability and high reliability in demanding industrial environments. It is essential for building custom operator interfaces for panels and machinery.

Benefit

• Versatile Design: The 3-way configuration allows for compact and efficient panel design by accommodating multiple functions within a single mounting position.

• Integrated Contact: Includes one pre-installed Normally Closed (NC) contact element, saving time during assembly and simplifying ordering.

• Reliable Connection: Utilizes screw terminals for a secure, long-lasting, and easily verifiable electrical connection, a standard in industrial wiring.

• High Durability: The plastic/metal construction ensures excellent mechanical stability and resistance to typical industrial stresses.

• Quick Assembly: Designed for easy snap-on mounting of SIRIUS ACT components, drastically reducing installation time.

Function

The 3SU1550-1AA10-1CA0 serves as the foundational mounting block for SIRIUS ACT pushbutton, selector switch, and indicator light components. It provides the mechanical structure for securing the operator element to the panel and, most importantly, the electrical connection points. The integrated 1 NC contact element ensures that when the corresponding actuator (e.g., a pushbutton) is in its rest position, a circuit remains closed, opening only upon actuation.

Application

• Control panels and enclosures

• Industrial automation systems

• Machinery interfaces (pushbuttons, indicator lights, selector switches)

• Signaling and control circuits in manufacturing, processing plants, or electrical cabinets

• Retrofits and maintenance projects requiring flexible module mounting

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