Selective overcurrent switch ETIMAT SM 1p E25 002129202

Selective overcurrent circuit breakers – protection and reliability of installations

The ETIMAT SM 1p E25 selective overcurrent circuit breaker is an electrical protection element designed for both professional and home use. It provides effective protection of circuits against overload and short circuit, and its selectivity guarantees that only the damaged section of the installation will be switched off in the event of a failure, minimizing downtime. The circuit breaker design allows for mounting on a DIN rail, which simplifies and speeds up installation.

Construction and application

The ETIMAT SM circuit breaker is characterized by a compact design and high quality of workmanship. It is intended for operation in installations with a rated voltage of 400 V and a rated current of 25 A. Its tripping characteristic of type E provides a delayed response to short-term overloads, which is particularly important for devices with induction motors or other loads with high starting current. The rated breaking capacity of 25 kA guarantees safety even in the event of serious short circuits.

• Mounting: Easy mounting on a standard DIN TH35 rail – saves time and installation costs.
• Selectivity: Ensures selective cooperation with other overcurrent circuit breakers in the installation – precise fault location.
• Characteristic E: Ideal for protecting circuits powering devices with high starting current (e.g. motors, transformers) – avoids unnecessary tripping.
• Durability: Rated breaking capacity 25 kA – high resistance to short circuits.
• Safety: IP20 protection class provides protection against accidental contact – increased safety of use.
• Additional functions: The ability to seal the lever in the "ON" and "OFF" positions, as well as the installation of auxiliary contacts, overcurrent and undervoltage releases, increase the functionality of the device.

Constructional features and parameters

The ETIMAT SM circuit breaker has been designed with durability and reliability in mind. Its housing made of high-quality materials provides resistance to mechanical damage and environmental conditions. Pollution degree 3 means that the device can operate in environments with a moderate level of pollution. Surge category IV indicates high resistance to voltage surges. Additionally, the ability to label circuits facilitates the identification of individual elements of the electrical installation, which is particularly useful during maintenance and repairs. The contact position indicator (OFF - green, ON - red) allows for quick visual control of the circuit breaker status.