Product Description

ABB HD4 Circuit Breaker HD4P 12.12.32 

Classification E2, M2, C2 

M  MASS 120 kg 

Ur  VOLTAGE 12 kV

Up LIGHTNING IMPULSE WITHSTAND VOLTAGE 75 kV

Ud POWER FREQUENCY WITHSTAND VOLTAGE 28 kV

fr FREQUENCY 50/60 Hz

Ir NORMAL CURRENT 1250 A

Ik SHORT TIME WITHSTAND CURRENT 31, 5 kA

tk DURATION OF SHORT CIRCUIT  3 s

Isc SHORT CIRCUIT BREAKING CURRENT 31, 5 kA

MAKING CAPACITY (PEAK VALUE) 80 kA

AT THE VOLTAGE OF 12 kV

D.C. COMPONENT <= 35 %

Ic CABLE-CHARGING BREAKING CURRENT 25 A

Prm SF6 FILLING PRESSURE AT 20^ C 0,380 MPa

m SF6 MASS FOR CIRCUIT-BREAKER 0,225 Kg

OPERATING SEQUENCE O-0, 3S-CO-15S-CO