The Helios MSA is a thermal protection tripping device designed for safeguarding electric motors, including those in ex-protected environments. Compatible with 1 to 6 sensor rows and activated by a cold conductor temperature sensor, it complies with DIN 44801 and DIN 44082 standards. A built-in LED provides immediate fault indication, and the unit features a manual reset via a push-in button. Housed in a durable polymer casing, the MSA is suitable for mounting on bearing strips within switch boxes in accordance with EN 50022. This device ensures reliable thermal protection and operational safety for sensitive motor systems.