ZW32Y-12 Outdoor Vacuum Circuit Breaker

Selection

Operating conditions

1. Ambient temperature: upper limit +40℃, lower limit -30℃; 2. Altitude: ≤2000m; 3. Wind pressure: not more than 700Pa (corresponding to the wind speed 34m/s); 4. Earthquake intensity: do not exceed 8 degree; 5. Pollution grade: III class; 6. Maximum daily temperature variety less than 25℃ .

Technical data

Item			Unit	Parameter
Rated voltage			kV	12
Rated insulation level	1min power frequency withstand voltage	Dry test  Wet test	kV	42/ fracture 48
			kV	34
	Lightning impulse withstand voltage (peak)		kV	75/ fracture 85
Rated current			A	630, 1250
Rated short-circuit breaking current			kA	20
Rated short-circuit breaking current time			Times	30
Rated short-circuit closing current (peak)			kA	50
Rated peak withstand current			kA	50
Rated short-time withstand current			kA	20
Rated short circuit duration			S	4
Opening time			ms	＜50
Closing time			ms	＜60
Full off time			ms	≤100
Arcing time			ms	≤50
Mechanical life			Times	30000
Switch on power			J	70
Rated operational voltage and auxiliary circuits rated voltage			V	DC 220
			V	AC 220

Overall and mounting dimensions(mm)

Circuit breaker and mounting dimensions Controller outline and mounting dimensions