Molded Case Circuit Breaker UKM30-630S 630A 3 overload, short
circuit and under-voltage protection
It is a mechanical switching device that can connect, load and
break the current under the normal circuit and can connect, load
and break the current within a period of time under the unnormal
Advanced design,reliable performance,high technical guid
line;elegant appearance, small bulk. It adopts micro-electronic
technology, and has intelligent control function; complete series
are zero arcintg.
The MCCB is applied in the distribution network circuit of AC50Hz,
with rated voltage up to 690V, rated current up to 800A. It is used
to protect circuits and power-supply equipments from damage of
overload, under-voltage,short-circuit,etc, can also be used for
infrequent starting of motor and provide overload, short circuit
and under-voltage protection for the motor. Exact and facility
setting up of the protection characteristics for electronic type
release and intelligence type release. The intelligent type release
has serial comunication interface, can comply with the request of
The MCCBs are meet requirement of IEC / EN 60947-2.
|Rated current In(A)||400,500,630|
|Number of poles||3|
|Rated voltage Ui(V)||AC690|
|Arc distance (mm)||≤50(0)*|
|Overcurrent release||Combined: thermal &electromagnetic|
|Rated ultimate breaking capitily Icu/Ics(KA)||AC690V||15/15|
|Operational performance (times)||ON||500|
*"0"arcing distance: please specify when ordering if you require.
The product shall be operated under the following environmental
● Does not contain corrosive gases and vapors in concentrations
destroying metals and insulation;
● Not rich conductive dust and vapors;
● Lack of direct exposure to ultraviolet radiation;
● Should not be signifinant shock or vibration.
Transport ans storage are only permitted in the original packing.
The ambient storage temperature:-45...+60° C and humidity not
above80% (at 25° C without condensation).
Installation and operating
The electrical work shall be performed by qualified personnel.
Before performing wiring work, turn off the upstream circuit
breaker and ensure that no curren is flowing through the breaker to
Failure to do so may expose you to shock hazard.
When connecting any wire ,tighten the terminal screw to the torque
specified in this manual. Failure to do so may cause a fire.
Do not install the breaker in an abnormal environment. Protect the
circuit breaker so that the foreign particles,such as dust,concrete
or/and iron power, water and other moistures will not enter the
breaker. Failture to do so may make the breaker inoperative.
Connect the circuit breaker to power supply appropriate to the
rating voltage. Failure to do so may make the breaker inoperative
or damage it. The breaker is installed in a plastic or metal box on
a mounting plate with latches having two fixed positions. Power can
be supplied from both the upper and lower contacrts.Terminals allow
to connect copper or aluminum conductors.Before connecting standed
conductors, they must be tipped using an appropriate tool.