Siemens Motor Protection Circuit Breaker 10A, 16A Current Rating, 3 Poles, Magnetic Sensing, 3RV2021-4AA10

Siemens 3RV2021-4AA10 Motor Protection Circuit Breaker is a high-quality 3-pole circuit breaker designed to safeguard electric motors from damage due to overcurrent or short circuits. With a current rating range of 10 to 16 A and magnetic sensing technology, it is part of Siemens’ 3RV2 series, known for performance and reliability.

This compact unit measures 97mm in length, 45mm in width, and 91mm in depth, making it ideal for space-constrained installations. It offers robust electrical protection with impulse voltage resistance of 6 kV and insulation rated at 690 V, ensuring operational safety in various industrial and automation applications.

The motor protection circuit breaker supports a wide temperature operating range from -20°C up to 60°C, suitable for harsh environments. It carries an IP20 ingress protection rating to prevent accidental contact with live parts and ingress of solid objects larger than 12 mm.

Built for durability, this Siemens breaker boasts a long mechanical service life exceeding 100,000 switching cycles and maintains efficiency with a minimal power loss of 7 W during operation. Installation is user-friendly via screw or spring clamp connectors compatible with standard DIN rails.

The unit also provides excellent shock resistance up to 25g/11ms, assuring stable performance under mechanical stresses commonly experienced in industrial settings. Compact and robust motor protection circuit breaker designed for 10 to 16 amp current rating.

Magnetic sensing ensures precise overcurrent detection and protection. Impulse voltage resistance of 6 kV and 690 V insulation rating for secure operation. Wide operating temperature range from -20°C to 60°C for flexible deployment.

Long mechanical life with 100,000+ switching cycles offers reliable durability. Low power loss of 7 watts optimizes energy efficiency in control circuits. IP20 ingress protection secures against finger contact and foreign objects over 12 mm.

Shock protection capable of withstanding 25g/11ms mechanical impacts. Simple installation with screw or spring clamp for standard DIN rail fitting.

This Motor Protection Circuit Breaker is widely used in industrial, manufacturing, automation, and electrical control applications to prevent motor damage and improve operational safety. It supports integration into modular systems such as contactors, overload relays, and motor starters as part of Siemens’ SIRIUS innovations range.

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