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Product Details
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Explosion-Proof Circuit Breaker BZD52

Model: BZD52

  • 🛡️Ex Mark: Ex db eb IIB T6 Gb, Ex tb IIC T80℃ Db
  • Rated Spec: In≤630A / Max AC 690V
  • 🔌Number of Poles: 1P/2P/3P/4P (Optional RCD)
  • 🔩Inlet Thread: G3/4" ~ G4" (Cable: Φ10~80mm)
  • 💧IP Rating: IP66
Zone 1
Zone 2
Zone 20
Zone 21
Zone 22

Model Meaning

explosion-proof circuit breaker bzd52 model meaning

Implementation Standard

GB/T3836.1、GB/T3836.2、GB/T3836.3、GB/T3836.31、IEC60079-0、IEC 60079-1、IEC 60079-7、IEC 60079-31

Technical Parameter

explosion-proof circuit breaker bzd52-7

Model SpecificationsRated Voltage (V)Rated Current (A)Explosion-Proof MarkingProtection RatingCorrosion Resistance RatingCable Entry ThreadCable Outer Diameter
BDZ52AC 690V,660V,440V,400V,380V,
230V,220V,110V,48V,36V,24V,12V
DC 220V,110V,48V,36V,24V,12V
In≤16Ex db eb IIB T6 Gb,
Ex tb IIC T80℃ Db
IP66WF1
WF2*
G3/4"~G4"Φ10~Φ80mm
63<In≤100Ex db eb IIB T5 Gb,
Ex tb IIC T80℃ Db
100<In≤630Ex db eb IIB T4 Gb,
Ex tb IIC T80℃ Db
BDZ53In≤16Ex db eb IIB T6 Gb,
Ex tb IIC T80℃ Db
63<In≤100Ex db eb IIB T5 Gb,
Ex tb IIC T80℃ Db
100<In≤630Ex db eb IIB T4 Gb,
Ex tb IIC T80℃ Db

Selection Table

Model SpecificationsRated Current (A)Inlet ThreadCable Outer Diameter
BDZ52
BDZ53
In≤16G3/4"φ10~φ14mm
16<In≤32G1"φ12~φ17mm
32<In≤40G1 1/4"φ15~φ23mm
40<In≤63G1 1/2"φ18~φ33mm
63<In≤160G2"φ26~φ43mm
160<In≤200G2 1/2"φ30~φ50mm
200<In≤315G3"φ38~φ57mm
315<In≤630G4"φ48~φ80mm

Product Features

1. Aluminum alloy die-cast housing undergoes high-speed shot blasting followed by high-pressure electrostatic powder coating for corrosion resistance and aging resistance;

2. Stainless steel exposed fasteners provide superior corrosion resistance;

3. This series features a composite structure: the main chamber employs explosion-proof construction (IIB type with flat-face explosion-proof, IIC type with flanged explosion-proof), while the wiring chamber uses increased safety construction;

4. Equipped with high-breaking capacity miniature circuit breakers or molded case circuit breakers. The cover features a PC operating handle with a patented new mechanism, offering a simple, rational design, high versatility, and convenient operation;

5. Sealing strips utilize advanced one-step wire-pour foaming molding technology for superior protection;

6. Compatible with both steel pipe and cable wiring.

explosion-proof circuit breaker bzd52-8
explosion-proof circuit breaker bzd52-9
explosion-proof circuit breaker bzd52-10
explosion-proof circuit breaker bzd52-11
explosion-proof circuit breaker bzd52-12
explosion-proof circuit breaker bzd52-13
explosion-proof circuit breaker bzd52-14
explosion-proof circuit breaker bzd52-15

BDZ52 Installation Dimensions

explosion-proof circuit breaker bzd52 installation dimensions-1
explosion-proof circuit breaker bzd52 installation dimensions-2

BDZ53 Installation Dimensions

explosion-proof circuit breaker bzd53 installation dimensions-1
explosion-proof circuit breaker bzd53 installation dimensions-2

Applicable Scope

1. Suitable for Zone 1 and Zone 2 locations in explosive gas environments;

2. Suitable for Class IIA, IIB, and IIC explosive gas environments;

3. Suitable for Zone 21 and Zone 22 locations in explosive dust environments;

4. Suitable for Class IIIA, IIIB, and IIC explosive dust environments;

5. Suitable for temperature classes T1 to T6;

6. Suitable for hazardous environments in petroleum extraction, refining, chemical processing, military applications, offshore oil platforms, tankers, defense industries, metal processing, and similar settings.

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