# Federal FM4-C20 Automatic Circuit Breaker

Source: [https://www.stilsan.com/en/products/federal-fm4-c20-sigorta](https://www.stilsan.com/en/products/federal-fm4-c20-sigorta)

SKU: STL-111

Last updated: 2026-07-23

Category: Spare Parts

The Federal Electric FM4-C20 automatic circuit breaker has a rated current of 20A and a Type C tripping characteristic. It is suitable for loads with high inrush current, such as general lighting and socket circuits in residential and commercial installations, and operates with a delayed response time. It operates at a voltage of 230/400V~ and a frequency of 50/60Hz, with a short-circuit breaking capacity of 4500A (4.5 kA). It is manufactured in accordance with the IEC 60898-1 standard.

## Technical specifications

- Brand: Federal Electric
- Model: FM4-C20
- Standard: IEC 60898-1
- Rated Voltage: 230/400V~
- Rated Frequency: 50/60Hz
- Rated Current (In): 20 A
- Tripping Characteristic: Type C
- Short-Circuit Breaking Capacity (Icn): 4500A (4.5 kA)