AIR CIRCUIT BREAKERS - Electrical and Electronics Division

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TECHNICAL DATA - DX..S (3/4 POLE)
Type Designation DX 250S DX 400S DX 630S
Rated Uninterrupted current
at 40o C. - Ith (AC/DC) A 250 400 630
Rated impulse withstand voltage - Uimp kV 8 8 8
Rated operational voltage - Ue V 415 415 415
V DC 440 – –
�requency Hz 50/60 50/60 50/60
Rated insulation voltage - Ui V 690 690 690
OperatingTemperature °C -5 to +55 -5 to +55 -5 to +55
Overvoltage category / pollution degree III/3 III/3 III/3
Rated Short-circuit making capacity - Icm kA 94.5 220 220
Rated ultimate S.C. breaking capacity - Icu
at 690V ac kA 6 25 25
at 500V ac kA 12 42 42
at 415V ac kA 35 65 65
at 230V ac
Rated Service S.C.
kA 45 100 100
breaking capacity - Ics (of Icu) kA 100% 50% 50%
DC Breaking capacity at 440 V kA 20 - -
Utilisation category A A / B A / B
Rated short-time withstand current Icw (1 Sec)kA - 8 8
Mechanical life Ops. 20000 20000 20000
Electrical life (AC3, 400V) Ops. 3500 1250 1250
Release Type Thermal-Magnetic Electronic Electronic
Overload release setting 80-100% 50-100% 50-100%
Short Circuit release setting 6-12*In 2-12*In 2-12*In
Mechanical Shock resistance g 20 20 20
Weight (3 - Pole) kg 1.7 9.1 9.1
(4 - Pole)
Accessories
kg 1.7 11.9 11.9
Auxiliary contacts y y y
Shunt release y y y
Under voltage release y y y
Trip indicating auxiliary contacts y y y
Earth fault module y y y
Rotary operating mechanism y y y
Residual-current protection module y y y
Remote operator y y y
Withdrawable unit - y y
Mechanical interlock y y y
Paralleling mechanism
Load monitoring
y y y