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SIEMENS 3RV2321-4FC10 Magnetic Circuit Breaker

Product Description

The SIEMENS 3RV2321-4FC10 is a compact, current-limiting motor protection circuit breaker designed for reliable overload and short-circuit protection in industrial applications. It is part of the SIRIUS 3RV series, offering advanced safety features for motors and starters up to 100A. Its modular design allows flexible integration with 3RT2 contactors, 3RF34 solid-state relays, and 3RW30/40 soft starters, ensuring efficient motor control and protection.

Key Features & Advantages

Advanced Protection Technology
- Utilizes dual-metal trip technology, reducing heat dissipation by 5-10% compared to previous models, improving energy efficiency and lowering control cabinet temperatures.
- Provides short-circuit interruption, overload protection, and safe isolation of equipment from power supply systems.
Flexible Installation & Connectivity
- Supports screw, spring, and ring terminal connections, enhancing wiring flexibility.
- Compatible with 3RV feeder systems, three-phase busbar systems, and 8US busbar systems, reducing main circuit wiring complexity.
Clear Operational Indication
- Features a rotary handle with distinct "OFF," "ON," and "TRIPPED" positions for easy status monitoring.
Wide Application Range
- Suitable for motor protection (0.1-52A), transformer protection, and circuit protection (UL/CSA compliant).
- Ideal for industrial automation, HVAC systems, pump controls, and machine tool protection.

Technical Parameters

Rated Current: Adjustable based on motor load
Breaking Capacity: High short-circuit interruption capability
Connection Types: Screw, spring, ring terminals (S00 & S0 models)
Mounting: DIN rail compatible
Standards Compliance: IEC/EN 60947, UL/CSA certified

Application Fields

Motor Control Centers (MCCs)
Industrial Machinery & Conveyor Systems
HVAC & Pump Control Panels
Renewable Energy Systems (Solar/Wind Inverters)

Installation & Safety Notes

Ensure proper thermal and magnetic trip settings based on motor specifications.
Avoid exposure to excessive moisture, dust, or corrosive environments.
Follow EMC guidelines to prevent electromagnetic interference in sensitive control systems.
Use shielded cables for signal wiring and maintain proper grounding to avoid faults.