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BLW52 Explosion Proof Safety Load Switch


Explosive gas atmosphere Zone 1 and Zone 2

Combustible dust areas Zone 21 and Zone 22

Explosive gas mixture classification IIA, IIB, IIC

Explosive gas ignition temperature group T1-T6(T4)

Technician specifications

Ex rating: Exde IIB T4 Gb, Exde IIC T4 Gb, Ex td A21 IP66 T135℃

Rated current: 20-100A, 3 phase or 4 phase

Rated voltage: AC220V/380V

Built-in components: Load switch, Terminals

IP grade: IP65, IP66*

Corrosion-proof class: WF1, WF2*

Way of inlet: Top in-Bottom out, Bottom in-Top out, Top in-Top out or Bottom in-Bottom out

Standard is Bottom in-Bottom out if no noted

Inlet thread: G1/2" ~G3"

Wiring Outer diameter: φ6.5mm~φ70mm

Mounting: wall type

Executive standard: GB3836.1, GB3836.2, GB3836.3, GB12476.1, GB12476.5; IEC60079-0, IEC60079-1, IEC60079-7,  IEC61241-0,IEC61241-1; EN60079-0, EN60079-1, EN61241-0, EN61241-1

Model implicatio

BLW52 Explosion Proof Safety Load Switch


Designed for Explosive atmosphere Zone 1 and Zone 2

Designed for Groups IIA,IIB,IIC

Designed for Combustible dust Zone21, Zone22

Designed for Temperature classes T1~T6(T4). Designed for sites with explosive atmosphere such as petroleum exploitation,  refinery, chemistry, medicine,textile, printing, military and military etc.


After the circuit breaker rated current is less than or equal to 63A in miniature circuit breaker, miniature circuit breakers, domestic and foreign well-known brands available, can also according to the customer demand paperback release leakage accessories and separation.Protecting device;

When the circuit breaker is above 63 under 630A installed mccb; No steeltubewiringorcablewiring.

Techniccl parameter

Meet a criterion:GB3836.1, GB3836.2, GB3836.3, GB12476.1, GB12476.5,IEC60079-0, IEC60079-1, IEC60079-7, IEC61241-0,IEC61241-1,EN60079-0,EN60079-1, EN61241-0, EN61241-1-1

Explosion-proof mark: Exd II BT4 Gb   Exd II CT4 Gb   Exde II BT4 Gb   Exde II CT4 Gb   ExtD A21 IP66 T130

Rated voltage:AC220V/380V

Rated current:MCB≤63A 63A<MCCB≤630A

Built-in components: MCB; MCCB、Terminal blocks.

 protection grade:IP65, IP66*

Explosion-proof grade:WF1;WF2*

Ways of inlet:Top in-Bottom out、Bottom in-Top out、Top in-Top out or Bottom in-Bottom out.

Standard is Bottom in-Bottom Out If none-Note.

Inlet thread:G1/2” to G3”

Wiring Outer diameter: Φ6.5mm - Φ70mm

Mounting mode: Vertical type or Pendant type

BLW52 Explosion Proof Safety Load Switch

Accel Technology