Siemens 3RV2021-4BA20

Overview

The Siemens 3RV2021-4BA20 SIRIUS Motor Protection Circuit Breaker is an essential component for safeguarding electric motors and sensitive equipment within industrial environments. Engineered for precision and durability, this 3-pole circuit breaker provides robust protection against overloads, short circuits, and phase loss, ensuring operational continuity and preventing costly damage. With an adjustable current setting range of 13 to 20 Amperes and an impressive 55 kA short-circuit breaking capacity, it delivers uncompromising performance in demanding applications. Its compact S0 size and convenient spring-type terminals make it an ideal solution for integration into space-constrained control panels and machinery.

Key Features

• Adjustable Current Range: Precisely set between 13 A and 20 A for tailored motor protection.
• High Breaking Capacity: Offers a formidable 55 kA short-circuit breaking capacity at 400V, ensuring safety under fault conditions.
• Spring-Type Terminals: Facilitate quick, secure, and vibration-resistant wiring connections.
• Compact S0 Frame Size: Optimized for space-saving installation in industrial control panels.
• Thermal-Magnetic Tripping: Provides reliable and instantaneous protection against overloads and short circuits.
• Manual Reset and Switching: Allows for direct control and operational flexibility.
• Global Compliance: Meets rigorous international standards including IEC/EN 60947-4-1 and -2.

Technical Specifications

• Catalog Number: 3RV2021-4BA20
• Frame Size: S0
• Number of Poles: 3
• Current Setting Range: 13 A to 20 A
• Short-Circuit Breaking Capacity: 55 kA at 400V
• Voltage Rating: Up to 690V AC
• Utilization Category: AC-3
• Connection Type: Spring-loaded terminals
• Tripping Class: Class 10
• Protection Class: IP20
• Mounting: DIN rail or direct screw mounting
• Ambient Temperature Range: -20°C to +60°C
• Weight: Approximately 0.435 kg
• Certifications: CE, UL, CSA, EAC
• Country of Origin: Germany

Applications

• Effective protection for electric motors with a current range of 13-20 A.
• Integration into industrial control panels (ICPs) and Motor Control Centers (MCCs).
• Safeguarding pumps, HVAC systems, and compressor units from electrical faults.
• Ideal for Machine OEMs requiring compact, highly reliable motor protection solutions.
• Critical safety component in automation systems and manufacturing processes.

Why Choose This Model?

• Unmatched Reliability: Siemens SIRIUS series products are renowned for their robust construction and long-term operational stability, minimizing downtime.
• Superior Protection: Built-in thermal-magnetic tripping ensures comprehensive defense against overloads and short circuits, extending motor lifespan.
• Installation Efficiency: Spring-type terminals drastically reduce wiring time and complexity, leading to faster commissioning.
• Space-Saving Design: The S0 frame size allows for optimal panel density, crucial in compact industrial setups.
• Global Standard Compliance: Adherence to international certifications guarantees suitability for worldwide deployment and regulatory approval.
• German Engineering Excellence: Manufactured in Germany, ensuring high-quality craftsmanship and stringent performance testing.

Order Now

Elevate your motor protection strategy with the Siemens 3RV2021-4BA20 SIRIUS Motor Protection Circuit Breaker. Available for fast, worldwide shipping to meet your project deadlines. For a broader selection, explore our complete range of Siemens SIRIUS Contactors or return to the main Siemens Industrial Automation Products category.