AIR CIRCUIT BREAKERS - Electrical and Electronics Division

2
2/21
TECHNICAL DATA - DX..H (3/4 POLE)
Type Designation DX 250H DX 400H DX 630H DX 800H
Rated Uninterrupted current
at 40 ° C. - Ith (AC/DC) A 250 400 630 800
Rated impulse withstand voltage - Uimp kV 8 8 8 8
Rated operational voltage - Ue V 415 415 415 415
V DC 440 – – –
�requency Hz 50/60 50/60 50/60 50/60
Rated insulation voltage - Ui V 690 690 690 690
Operating Temperature °C -5 to +55 -5 to +55 -5 to +55 -5 to +55
Overvoltage category / pollution degree III/3 III/3 III/3 III/3
Rated Short-circuit making capacity - Icm kA 220 440 440 275
Rated ultimate S.C. breaking capacity - Icu
at 690V ac kA 8 30 30 25
at 500V ac kA 20 65 65 45
at 415V ac kA 65 100 100 65
at 230V ac
Rated Service S.C.
kA 100 200 200 100
breaking capacity - Ics (of Icu) kA 75% 50% 50% 75%
DC Breaking capacity at 440 V kA 25 - - -
Utilisation category A A / B A B
Rated short-time withstand current Icw (1 Sec) kA - 8 8 15 (0.3 S)
Mechanical life Ops. 20000 20000 20000 2500
Electrical life (AC3, 400V) Ops. 3500 5000 5000 500 (AC1)
Release Type Thermal-Magnetic Electronic Electronic Electronic
Overload release setting 80-100% 50-100% 50-100% 50-100%
Short Circuit release setting 6-12*In 2-12*In 2-12*In 2-12*In
Mechanical Shock resistance g 20 20 20 20
Weight (3 - Pole) kg 1.7 9.1 9.1 20.4
(4 - Pole)
Accessories
kg 1.7 11.9 11.9 26.4
Auxiliary contacts y y y y
Shunt release y y y y
Under voltage release y y y y
Trip indicating auxiliary contacts y y y y
Earth fault module y y y y
Rotary operating mechanism y y y y
Residual-current protection module y y y -
Remote operator y y y y
Withdrawable unit - y y y
Mechanical interlock y y y y
Paralleling mechanism y y y -
Load monitoring y