Description
เบรกเกอร์กันระเบิด 250-400A
Circuit breaker explosion proof enclosure 250-400A
Technical data
Type of Protection: Ex d IIA T6
Conforming to : Standards IEC 60079-1 or UL 60079-0/1
Marking for test : Ex II2G
Degree of Protection : IP65/66 acc.To IEC 60529
Ambient Temp. (Ta) : -20 C to+ 55 C
Type :ECB
Protection class for UL. :
Class I, Divition1 or 2 Group.C,D
Class II, Divition 1 or 2 Groups.E,F,G
Class III
Protection class for IEC : Zone1 and Zone 2
Electrical Rating : 32 to 800 Ampere frame sizes.
Applications:
The ECB circuit breakers and enclosures are suitable for
– use in hazardous areas due to the presence of flammable gases or vapors, combustible dusts or ignitible fibers.
– installation in petroleum refineries, chemical plants, storage areas where hazardous substances are handled.
– short circuit and overcurrent protection of service entrance,feeder branch circuit, lighting or motor circuit and serve as a disconnecting mean.
– indoor or outdoor in damp, wet or corrosive locations.
Features:
– Compact rectangular shape enclosure with bolted cover.
– Four mounting lugs and ground-point are provided.
– Breaker handle can be locked in ‘OFF’ position.
– Optional O-Ring gasket is equiped at flange of the cover to protect against the ingress of moisture or liquid for outdoor use.
– Circuit breaker is mounted on steel plate.
– Mitsubishi of ABB circuit breaker are supplied as standard. for the other brands – consult factory.
Standard Materials:
– Body,cover and operating handle : Copper-free aluminium
– Mounting plate : Sheet steell
– Bolts and bush : Stainless steel
– CB’s mechanism : Steel
Standard Finishes:
– Copper-free aluminium : Epoxy-polyester powder
– Stainless steel : Natural
– Sheet steel : Zinc electro-plated
Options :
O-Ring gasket.
Drain fitting.
Internal accessories of circuit breaker
– Alarm switch (Indicates that the breaker has tripped.)
– Auxiliary switch (Indicates weather the breaker is ON or OFF
– Shunt trip (Trip the breaker electrically by Mushroom-head push button.)
– Undervoltage trip (Trip the breaker automatically when the voltage drops.)
