Indoor vacuum load-break switch
12 kV, 630 A | FZN21-12D/T630-20, FZRN21-12D/T125-31. Chint Electric Co.,Ltd.

FZN21-12D/T630-20 Indoor Vacuum Switch / FZRN21-12D/T125-31.5 Indoor AC HV Vacuum Switch-fuse Combination

Application: in the system of 50Hz, 12kV for making and breaking of load current, over-load current and short-circuit current to control and protect the circuit and transformer, etc.
Standards: IEC 60265, IEC 60420

Features:
 High breaking capacity.
 Compact design and light in weight.
 Reliable operation and long operation endurance.

Technical Data:
 Rated voltage (kV):
- FZN21-12D/T630-20: 12
- FZN21-12D/T125-20: 12
 Rated frequency (Hz):
- FZN21-12D/T630-20: 50
- FZN21-12D/T125-20: 50
 Rated current (A):
- FZN21-12D/T630-20: 630
- FZN21-12D/T125-20: 125
 Rated insulation level: 1min power frequency withstand voltage (kV):
- FZN21-12D/T630-20: 42
- FZN21-12D/T125-20: 48
 Rated lighting impulse withstand voltage (kV):
- FZN21-12D/T630-20: 75
- FZN21-12D/T125-20: 85
 Rated withstands current (peak) [kA]: FZN21-12D/T630-20: 50
 Rated short-time withstands current(RMS) (kA): FZN21-12D/T630-20: 20
 Rated breaking current of active load (A): FZN21-12D/T630-20: 630
 Rated breaking current of closed loop (A): FZN21-12D/T630-20: 630
 Rated cable-charging breaking current (A): FZN21-12D/T630-20: 10
 Breaking capacity of no-load transformer (kVA):
- FZN21-12D/T630-20: 1250
- FZN21-12D/T125-20: 1250
 Rated short-circuit breaking current (kA): FZN21-12D/T125-20: 31.5