BLK911-A Marine explosion-proof master controllerDetailed product description：

BLK911-A marine explosion-proof master controller is suitable for two types of electrical systems: 380V/50HZ and 440V/60HZ. It controls the starting, braking, forward and reverse speed changes, and protection of AC variable pole variable speed asynchronous motors in equipment such as windmills or winches, cable winches, and mooring winches. Its explosion-proof rating is Exd Ⅱ BT4 and Exed Ⅱ BT4, and its protection rating is IP56.

Application scope:
1. Zone 1 and Zone 2 hazardous areas with explosive gas environments;
2. Flammable gas vapor level IIA, IIB;
3. Temperature group T1-T4;
4. The ambient air temperature ranges from -25 ℃ to+45 ℃;
5. There is humid sea air, oil mist, and salt mist;
6. To withstand the vibration and impact generated during ship operation, tilt and sway ± 22.5 degrees.