... -wire replacement, easy maintenance; 2. Build-in temperature control circuit breaker, high security performance; 3. Green light in notice window ... module free assembled, easy project construction; 6. Assembled 1P, 2P, 3P, 4P etc modes, applied to various electric network ... specificationNKP-DY-I-40/385/4PNo. of poles4P/3P/2P/1PPower supply systemTT/TN/ITProtection gradeC classOperation voltage Un ...