Schischek Ex Actuators

Schischek actuators are designed for safe operation in explosive environments and meet the strict requirements of ATEX directives. With various product lines and variants, they offer solutions for a wide range of applications, from standard industrial equipment to specific fire safety requirements. Each actuator model is identified by a unique designation that provides detailed information about its functions and specifications. **Difference between the ExMax, RedMax, and InMax product lines**: - **ExMax** – A series of actuators intended for use in explosive environments, certified for zones 1, 2, 21, and 22. These actuators are suitable for a wide range of applications in industries where a high level of protection is required. - **RedMax** – A series of actuators designed for use in explosive environments, certified for zones 2 and 22. These actuators are ideal for applications where reliability and safety are required in less demanding zones. - **InMax** – A series of actuators intended for use in safe (non-Ex) environments. These actuators are suitable for standard industrial applications where explosion protection is not required. **Structure of Schischek actuator designations and their significance**: The designation of Schischek actuators consists of several parts that describe key features and functions: 1. **Product line** (e.g., ExMax, RedMax, InMax) 2. **Torque** (e.g., 5.10, which indicates 5 Nm or 10 Nm depending on the model) 3. **Type of control and function**: - **Y** – Continuous control with an analog signal (0–10 V or 4–20 mA) - **S** – Includes auxiliary switches for position indication - **F** – Fail-safe function that automatically closes the damper in the event of a power failure - **BF** – Special designation for actuators intended for controlling fire dampers, meeting strict requirements for safe closure and protection against the spread of fire and smoke **What is a fail-safe function?** The fail-safe function is a safety mechanism that ensures the actuator automatically closes the damper or valve in the event of a power failure. This is crucial to prevent the spread of flammable substances or air into hazardous areas. In an emergency situation, the device remains in a safe state, thereby minimizing the risk of explosion or fire.