1. Automatic overloading, short circuit, phase-drop and phase sequence diorder prevention.
2. Built on, low level or high level, single or 3 phase.
3. available to receive signal from smoke and heat detector.
4. Easily controlled by remote fire fighting station or fire alarm output module.

5. Both automatically and manually operated.
6. Activiation circuits for maximum safety.
7. European style design, light, reliable performance, excellent anti-interference, easily installed and debugged.