Explosion Proof Enclosure Exd 11b Class 1 Div 1 Enclosure SEE-IIB Series



Class I Division 1,Group C,D


Zone 1, Zone 2


Class II Division 1,Group E,F,G


Zone 21, Zone 22


Class III


Type 4X,IP66


Ex d IIB T6 Gb




Ex tb IIIC T80℃ Db IP66


SEE-IIB series explosion proof enclosure, default flameproof enclosure or FLP enclosure, is constructed by flame proof aluminum body and inbuilt increased safety type circuit breakers to be Ex de enclosure and can withstand the explosion brought by flammable gas or dust and prevent the explosion from transmitting into the outer of enclosure in hazardous location. As a classic and mostly used class 1 div 1 enclosure and zone 1 enclosure, this explosion proof enclosure can be used as class 1 div 1 junction box with terminal blocks and explosion proof panel with circuit breakers.



Explosion Proof Enclosure SEE-IIB Series



Aluminum alloy plane joint smooth flame proof path with low surface roughness to conclude IIB explosion proof standard


Ex Proof Enclosure


Flexible hinge to open and hold the heavy cover for convenient future maintenance


Selection Table

Explosion Proof Enclosure SEE-IIB Series


Data Sheet

Explosion Proof Enclosure SEE-IIB Series


IEC StandardIEC60079-0, IEC60079-1, IEC60079-31Ex d IIC T6 GbEx tb IIIC Db IP66Zone 1, Zone 2Zone 21, Zone 22

EU StandardEN60079-0, EN60079-1, EN60079-31II 2 G Ex d IIC GbII 2 D Ex tb IIIC Db IP66Zone 1, Zone 2Zone 21, Zone 22

NEC & CEC StandardClass I, Div.1, Group C, DClass II, Div.1, Group E, F, GClass III

UL StandardUL844, UL1598, UL1598A

CSA StandardCSA C22.2 No.137


Copper-free aluminium,grey

Rated Current


IP Grade

Wet Locations, Type 4X, IP66

Ambient Temperature

-40℃~ +55℃ /-40°F ~ +131°F


I / II / III / IV / V / VI / VII / VIII