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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 1Explosive gas atmosphere is likely to occur in normal operation.
Zone 2Explosive gas atmosphere is not likely to occur, or only for a short period.
Zone 20Explosive dust atmosphere is present continuously or for long periods.
Zone 21Explosive dust atmosphere is likely to occur in normal operation.
Zone 22Explosive dust atmosphere is not likely to occur, or only for a short period.

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.

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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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