SIEMENS 3RV2021-0AA10-0DA0 Motor Protection Circuit Breaker (MPCB) / Motor Circuit Breaker (MCB)

‌1. Product Name‌
SIEMENS 3RV2021-0AA10-0DA0 Motor Protection Circuit Breaker (MPCB) / Motor Circuit Breaker (MCB)

‌2. Product Brief Introduction‌
The SIEMENS 3RV2021-0AA10-0DA0 is a Motor Protection Circuit Breaker (MPCB), also known as a motor circuit breaker, from the Siemens SIRIUS 3RV series. This integrated device is designed specifically for the comprehensive protection and control of three-phase electric motors, combining short-circuit protection, adjustable thermal overload protection, and a switching/disconnect function within a single, compact unit.

‌3. Product Description‌
The SIEMENS 3RV2021-0AA10-0DA0 is an advanced, all-in-one Motor Protection Circuit Breaker (MPCB) from the Siemens SIRIUS 3RV product line. This device is engineered to provide a simplified yet robust solution for safeguarding electric motors by integrating multiple essential functions into one compact enclosure. Its primary role is to deliver reliable and coordinated protection for a ‌SIEMENS MOTOR‌ against the most common electrical faults. The 3RV2021-0AA10-0DA0 features instantaneous magnetic trip protection that reacts in milliseconds to high-level short-circuit currents, preventing catastrophic damage to the ‌SIEMENS MOTOR's‌ windings and the connected system. Simultaneously, its adjustable thermal overload protection shields the motor from sustained overloads—conditions where the motor draws more than its rated current for a prolonged time, which can lead to dangerous overheating and eventual insulation failure. This protection also covers phase failure (single-phasing) and phase imbalance. The device, based on details from similar models, has a narrow thermal overload tripping current setting range (such as 0.11-0.16A) and is set to a trip class of TC=10, which determines the thermal tripping characteristic for optimal motor protection. Beyond protection, this MPCB functions as a reliable manual ON/OFF switch for the motor circuit and provides a safe isolation point for maintenance. With its adjustable current setting, it can be precisely calibrated to the exact full-load ampere (FLA) rating of the specific ‌SIEMENS MOTOR‌ it is protecting, ensuring tailored and accurate performance. Housed in a robust design suitable for industrial environments, it offers a significant advantage in terms of space and component reduction when compared to traditional fuse-contactor-overload relay combinations. By ensuring quick response to faults and enabling safe operation and maintenance, this device is crucial for enhancing system reliability and maximizing the lifespan of the connected ‌SIEMENS MOTOR‌.

‌4. Product Model Number‌

‌5. Product Advantages‌

• ‌Integrated All-in-One Protection:‌ Combines short-circuit protection, adjustable thermal overload protection, and a manual disconnecting switch into a single compact device, offering a complete and space-efficient protection scheme for a ‌SIEMENS MOTOR‌.

• ‌Simplified Panel Design and Installation:‌ Eliminates the need for separate fuses, contactors, and overload relays, leading to reduced wiring complexity, less panel space, faster installation time, and fewer potential points of failure.

• ‌Accurate and Adjustable Protection:‌ Features a user-friendly, adjustable thermal overload setting that allows for precise calibration to the exact full-load current of the specific ‌SIEMENS MOTOR‌, ensuring optimal protection against overheating.

• ‌Enhanced Safety with Manual Control and Isolation:‌ Serves as a reliable manual switch for starting/stopping the motor and provides a safe means of isolation (potentially lockable) for maintenance, improving overall operational safety for personnel.

• ‌Reliable Siemens Quality:‌ Built to Siemens' industrial standards, it ensures dependable performance, durability, and long service life in challenging operating conditions, safeguarding the investment in the ‌SIEMENS MOTOR‌ and the associated equipment.

‌6. Website Analysis & Insights for www.wheat-auto.com‌
Based on the comprehensive information from the‌ for the website ‌www.wheat-auto.com‌, the site represents ‌Changzhou Wheat Automation Technology Co., Ltd.‌ The following analysis details its business and operations:

• ‌Core Business Model:‌ The company operates as an ‌international supplier, distributor, and trader‌ of a wide variety of industrial automation components and electronic products. It is explicitly ‌not a manufacturer‌ but a ‌trading and sourcing intermediary‌ or channel.

• ‌Business Focus & Product Portfolio:‌ The website functions as a ‌one-stop sourcing channel or global sourcing partner‌, listing a vast array of branded industrial components from numerous global manufacturers. The site content prominently lists major brands including ‌SIEMENS MOTOR‌, ‌ABB MOTORS‌, DeWalt, Endress&Hauser, Krohne, Honeywell, METTLER TOLEDO, Yokogawa, PIZZATO, and many others across categories like sensors, instruments, and switches. Their listed products span "air switches, pumps, power semiconductor modules and components".

• ‌Target Market:‌ The multilingual interface (English, Chinese, and Russian) clearly demonstrates a strategic focus on the ‌global B2B market‌, specifically targeting international clients in the industrial automation, manufacturing, and process control sectors.

• ‌Value Proposition & Operations:‌ The company's stated business principle is ‌"quality first, reputation first."‌ Its primary service is ‌global supply chain management and logistics‌, providing customers worldwide with access to specific branded components like the SIEMENS 3RV2021-0AA10-0DA0. Their operational model is an ‌inquiry-based, direct sales model‌. This is evidenced by the "News" section on their site, which acts as a product catalog/feed, listing specific Siemens part models (such as 6GK6000-8FX and 3VA2225-5H) and providing direct contact information including WhatsApp (+86 15951219765) and email (info@wheat-auto.com). They aim to build long-term business relationships.

• ‌Company Profile:‌ Described as a high-tech electronics company established in 2012, the company emphasizes a strict quality system, perfect management, high-quality after-sales service, and the goal of creating higher market value for all stakeholders. They have established relationships with many domestic and international enterprises.

‌Interpretation:‌ Changzhou Wheat Automation Technology Co., Ltd. positions itself as a ‌global commercial bridge and sourcing partner‌. Their expertise lies in international trade, sourcing, and distribution of specialized industrial components. They leverage a multilingual online platform and a direct contact sales model to connect global manufacturers (like Siemens and ABB) with international end-users, system integrators, and distributors who are searching for specific, often branded, industrial parts.

‌7. Use Scenarios‌

• ‌Compact Motor Starters and Control Panels:‌ Used as the primary protection and control device in compact starter enclosures or control panels for individual ‌SIEMENS MOTORs‌ driving pumps, fans, small compressors, and conveyor systems.

• ‌OEM and Machinery Manufacturing:‌ Integrated into the electrical cabinets of machine tools, packaging equipment, and other Original Equipment Manufacturer (OEM) machinery to provide main power switching, overload, and short-circuit protection for the integrated ‌SIEMENS MOTOR‌.

• ‌Distributed Motor Control Applications:‌ Ideal for installations where multiple motors are located at various points in a facility, as it provides a self-contained, compact unit for protection, control, and isolation at each ‌SIEMENS MOTOR‌ location, simplifying wiring and maintenance.

• ‌HVAC and Building Services:‌ Applied in Heating, Ventilation, and Air Conditioning (HVAC) units, exhaust fans, and water pumps to protect and manually control fan and pump ‌SIEMENS MOTORs‌.

• ‌Pump and Compressor Protection:‌ Used in standalone pump or compressor units to provide dedicated, compact, and reliable electrical protection against overloads and short-circuits for the driving ‌SIEMENS MOTOR‌.