SIEMENS 3RV2321-1HC20 Motor Protection Circuit Breaker (MPCB)

1. Product Name

SIEMENS 3RV2321-1HC20 Motor Protection Circuit Breaker (MPCB)

2. Product Introduction

The SIEMENS 3RV2321-1HC20 is a motor protection circuit breaker from the proven Sirius 3RV series, designed to offer reliable protection against overloads and short-circuits for three-phase AC motors. It serves as a critical safety component in motor starter combinations, safeguarding the integrity of connected drives, including ‌SIEMENS MOTOR‌ systems.

3. Product Description

The ‌SIEMENS 3RV2321-1HC20‌ Motor Protection Circuit Breaker (MPCB) is engineered as an all-in-one protective device for industrial AC motors. It integrates essential protective functions to ensure operational safety and equipment longevity. This device provides reliable protection against overloads using a thermal trip mechanism and against short-circuits via a magnetic trip mechanism, making it a fundamental building block in starter assemblies for critical ‌SIEMENS MOTOR‌ applications. Its design allows for precise coordination with motor ratings, helping to prevent winding burnout and equipment damage due to electrical faults. Constructed for industrial environments, the 3RV2321-1HC20 typically features adjustable overload protection settings, a manual operating handle with clear On/Off positions, and a trip indicator for easy status monitoring. Its compact and modular form factor allows for straightforward DIN rail mounting within control panels and enclosures, facilitating efficient use of space and simplified installation. As a part of the Siemens control and protection portfolio, this MPCB supports compliance with international standards, enhancing the safety and reliability of motor control centers (MCCs) and individual motor circuits across various industrial settings where robust protection for a ‌SIEMENS MOTOR‌ is paramount.

4. Product Model

5. Product Advantages

• ‌Dual-Function Protection:‌ Reliably protects motors from both thermal overloads and instantaneous short-circuit currents within a single, integrated device.

• ‌Space-Efficient & Modular:‌ The compact design saves panel space and supports easy DIN rail mounting, while its modularity allows for potential addition of auxiliary accessories.

• ‌Clear Operation & Indication:‌ Features a manual control handle and a trip indicator, ensuring straightforward operation and immediate visual feedback on device status.

• ‌Enhanced Motor Safety:‌ Helps extend the operational life of motors by preventing damage from common electrical faults, thereby reducing maintenance costs and downtime.

• ‌Industrial-Grade Robustness:‌ Built to withstand demanding industrial environments, ensuring reliable performance and durability.

6. Homepage Link & Website Insights

‌Homepage Link:‌ www.wheat-auto.com

‌Website Insights:‌
Based on the provided ‌ ‌, the website ‌www.wheat-auto.com‌ belongs to ‌Changzhou Wheat Automation Technology CO.,LTD‌. The site content identifies the company as a high-tech company established in May 2012, primarily "engaged in electronic products." Key features include a multilingual interface (English, Chinese, Russian), a menu structure highlighting ‌"Brand, Applications, Support, Contact Us,"‌ and a self-description as a ‌"外贸独立站" (foreign trade independent website)‌. The presence of a ‌"Request a Quotation"‌ section is particularly telling. This indicates the company's core business is ‌international B2B trade and distribution of electronic products, with a strong focus on industrial automation components and systems.‌ It likely operates as a supplier and solutions provider, sourcing products from various manufacturers and facilitating their sale to global clients in the manufacturing and automation sectors. The website appears to function more as a corporate gateway and lead-generation platform to initiate business inquiries rather than as a detailed product catalog for end-users.

7. Usage Scenarios  

The ‌SIEMENS 3RV2321-1HC20‌ is suitable for a variety of industrial applications that require dependable motor protection:

• ‌Industrial Machinery:‌ Protecting drive motors in conveyors, pumps, machine tools, and packaging equipment.

• ‌HVAC Systems:‌ Safeguarding compressor, fan, and pump motors within commercial and industrial heating, ventilation, and air conditioning installations.

• ‌Material Handling Equipment:‌ Used in control panels for motors driving automated guided vehicles (AGVs), cranes, and hoists.

• ‌Process Industry Applications:‌ Providing protection for motors operating mixers, agitators, and process pumps in chemical, water treatment, or food and beverage plants.

• ‌General Manufacturing:‌ Serving as a protective device for motors on assembly lines and other production machinery.