Description
The Siemens 3RV6021-4DA15 is a compact and robust motor protection circuit breaker engineered for dependable motor control and protection applications. Designed in Size S0, it provides adjustable overload (A-release) protection from 20 to 25 A and features a fixed instantaneous short-circuit trip (N-release) at 325 A for rapid fault response.
With a high short-circuit breaking capacity of 55 kA (Icu), this breaker ensures reliable protection even in demanding industrial environments. It is rated as Trip Class 10, making it suitable for standard motor starting conditions.
The unit includes 1 NO + 1 NC auxiliary contact (transverse auxiliary switch) for signaling and control integration. Flexible installation is supported via DIN rail or screw mounting, and screw terminals ensure secure electrical connections. Its compact design (45 mm width) makes it ideal for space-saving panel configurations.
This circuit breaker is an excellent choice for safeguarding motors against overload and short circuits in industrial automation and distribution systems.
Specifications
| Parameter | Specification |
|---|---|
| Manufacturer | Siemens |
| Part Number | 3RV6021-4DA15 |
| Product Type | Motor Protection Circuit Breaker |
| Size | S0 |
| Rated Current (Adjustable) | 20–25 A |
| Instantaneous Trip Current (N-Release) | 325 A |
| Trip Class | Class 10 |
| Breaking Capacity (Icu) | 55 kA |
| Auxiliary Contacts | 1 NO + 1 NC |
| Mounting Method | DIN Rail / Screw Mount |
| Connection Type | Screw Connection |
| Rated Operational Voltage | Standard Switching Capacity |
| Height | 97 mm |
| Width | 45 mm |
| Depth | 96 mm |
| Application | Motor Protection (Overload & Short Circuit) |
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