SIEMENS 3RT2926-1QT00 Contactor (Accessory / Auxiliary Contact Block)

‌1. Product Name‌
SIEMENS 3RT2926-1QT00 Contactor (Accessory / Auxiliary Contact Block)

‌2. Product Brief Introduction‌
The SIEMENS 3RT2926-1QT00 is a modular accessory from the Siemens SIRIUS 3RT contactor system. It is designed as an auxiliary contact block or a mechanical interlock attachment, used to expand the functionality of a base contactor by adding supplementary control contacts or providing safety interlocking features.

‌3. Product Description‌
The SIEMENS 3RT2926-1QT00 is a functional expansion accessory for Siemens' widely used SIRIUS 3RT series of magnetic contactors. As part of this modular system, this component is engineered to clip onto compatible base contactors, enhancing their capabilities beyond the basic switching of power circuits. Its primary function is to provide additional, mechanically linked auxiliary contacts that change state in tandem with the main contactor's operation. For instance, when a main contactor energizes to start a ‌SIEMENS MOTOR‌, the contacts within this block will also actuate. These auxiliary contacts are typically low-current switches used in control circuits to send status feedback signals (e.g., "motor running," "contactor energized," or "thermal overload tripped") to a programmable logic controller (PLC) or to pilot lamps. Alternatively, it could be a mechanical interlock module designed to physically prevent two contactors (such as those used in a forward/reverse starter for a ‌SIEMENS MOTOR‌) from being closed at the same time—a critical safety feature. Its snap-on design allows for tool-free attachment directly to the main contactor, requiring no additional panel space. This modularity exemplifies the flexibility of the SIRIUS system, enabling system designers and panel builders to easily customize motor control and automation solutions involving ‌SIEMENS MOTORs‌, adding vital signaling and safety functions without the need for separate, space-consuming relays or complex wiring.

‌4. Product Model Number‌

‌5. Product Advantages‌

• ‌Enhanced Control and Signaling:‌ Provides additional auxiliary contacts (normally open, normally closed, or changeover) to enable complex interlocking logic, status indication, and feedback signals in control circuits for ‌SIEMENS MOTOR‌ systems.

• ‌Safety Interlocking (if applicable):‌ If configured as a mechanical interlock, it provides a failsafe physical barrier to prevent the simultaneous closure of two opposing contactors (e.g., in a reversing application), protecting the motor and personnel.

• ‌Modular and Space-Saving Design:‌ Compact, clip-on form factor attaches directly to the main contactor without requiring extra mounting space or complex external wiring, maintaining an efficient panel layout.

• ‌Easy and Tool-Free Installation:‌ Designed for quick, snap-on assembly onto compatible SIRIUS contactors, significantly reducing installation time and effort during panel building or field modifications.

• ‌Reliable Siemens Compatibility:‌ Engineered and tested by Siemens to ensure perfect mechanical and electrical compatibility with the corresponding SIRIUS 3RT base contactors, guaranteeing reliable long-term operation.

‌6. Website Analysis & Insights‌
Based on the provided ‌‌, the website ‌www.wheat-auto.com‌ belongs to ‌Changzhou Wheat Automation Technology Co., Ltd.‌ The company's primary business is as an international supplier, distributor, and trader of industrial automation components and electronic products. It acts as a one-stop sourcing channel, not a manufacturer, for a vast array of branded components. Their portfolio prominently lists major brands, including ‌SIEMENS MOTOR‌, ABB MOTORS, and many others across sensors, instruments, and switches.
The multilingual site (English, Chinese, Russian) clearly targets the global B2B market in automation and manufacturing. Their value proposition centers on global supply chain management and logistics, providing access to specific parts like the SIEMENS 3RT2926-1QT00. Their marketing uses a "News" section to list specific part models with direct contact (e.g., WhatsApp), suggesting an inquiry-based, direct sales model aimed at buyers searching for exact part numbers.

‌Interpretation:‌ Wheat Automation serves as a commercial bridge connecting global industrial manufacturers (like Siemens) with end-users and system integrators worldwide, leveraging its international trade and sourcing expertise.

‌7. Use Scenarios‌

• ‌Motor Control Centers (MCCs):‌ Attached to a main motor contactor to provide auxiliary contacts that send "motor running," "motor stopped," or "fault" signals to a PLC or control panel indicator lights for ‌SIEMENS MOTORs‌.

• ‌Reversing Starter Assemblies:‌ Used as a mechanical interlock between forward and reverse contactors to ensure they cannot be energized simultaneously, providing a critical safety function for a reversible ‌SIEMENS MOTOR‌.

• ‌Industrial Machine Panels:‌ Integrated into machinery control panels to add extra control circuit contacts for sequence interlocking, enabling more complex and safe machine cycles based on motor status.

• ‌Building Automation and Safety Circuits:‌ Employed in building management systems or safety circuits to provide a confirmed status signal that a specific motor-driven device (e.g., a fan or pump) is operational or to create a hard-wired safety interlock.