SIEMENS 3RV2021-4NA20-0BA0 Motor Protection Circuit Breaker (MPCB)

‌Complete Content for SIEMENS 3RV2021-4NA20-0BA0 (Full English)‌

1. Product Name

SIEMENS 3RV2021-4NA20-0BA0 Motor Protection Circuit Breaker (MPCB)

2. Product Introduction

The SIEMENS 3RV2021-4NA20-0BA0 is a compact, high-performance motor protection circuit breaker designed for reliable protection of ‌SIEMENS MOTOR‌ systems against overloads, short-circuits, and phase failures. It integrates thermal and magnetic tripping mechanisms, ensuring safety and efficiency in industrial applications.

3. Product Description 

The ‌SIEMENS 3RV2021-4NA20-0BA0‌ is a versatile motor protection device engineered to safeguard ‌SIEMENS MOTOR‌ drives and other industrial motors. It features adjustable overload and short-circuit protection settings, allowing precise customization based on motor specifications. With a compact design, it saves panel space while providing robust performance in demanding environments. The device supports direct mounting on DIN rails and includes auxiliary contacts for system monitoring. Its thermal memory function prevents unnecessary tripping during frequent start-ups, enhancing operational continuity. Ideal for integration into automation panels, the 3RV2021-4NA20-0BA0 ensures compliance with international safety standards (e.g., IEC 60947), making it a trusted component for protecting ‌SIEMENS MOTOR‌ applications across manufacturing, HVAC, and machinery sectors.

4. Product Model

5. Product Advantages 

• ‌Compact Design‌: Saves installation space in control panels.

• ‌Adjustable Protection‌: Precise settings for overload and short-circuit currents.

• ‌High Reliability‌: Robust construction ensures durability in harsh industrial conditions.

• ‌Easy Integration‌: DIN rail mounting and auxiliary contacts simplify wiring and monitoring.

• ‌Thermal Memory‌: Reduces nuisance tripping during motor start-ups.

• ‌Compliance‌: Meets IEC 60947 standards for safety and performance.

6. Homepage Link & Website Insights

‌Homepage Link‌: www.wheat-auto.com

‌Website Insights‌:
Wheat Automation Technology (www.wheat-auto.com) is a high-tech company specializing in ‌electronic products‌, including automation components, sensors, and industrial control systems. The site highlights its focus on global trade (noted as "外贸独立站") and collaboration with domestic and international enterprises. Based on the content, the business likely supplies automation solutions for sectors like manufacturing, energy, and machinery. The homepage emphasizes product support, applications, and contact services, suggesting a customer-oriented approach. However, the site lacks detailed product catalogs or technical specifications for specific items like Siemens MPCBs, indicating it may serve as a general platform for company branding and inquiries rather than direct e-commerce.

7. Usage Scenarios 

The ‌SIEMENS 3RV2021-4NA20-0BA0‌ is suitable for:

• ‌Industrial Motor Control‌: Protecting ‌SIEMENS MOTOR‌ drives in conveyor systems, pumps, and fans.

• ‌Automation Panels‌: Integration into PLC-based control cabinets for manufacturing lines.

• ‌HVAC Systems‌: Safeguarding compressor and blower motors in heating and cooling units.

• ‌Machinery‌: Ensuring overload protection in CNC machines, presses, and packaging equipment.

• ‌Energy Infrastructure‌: Use in motor control centers (MCCs) for power generation and distribution.