BDZ58 Explosion-Proof Circuit Breaker
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Explosion protection: Ex d e Ⅱ BT 6 Gb/DIP A21 TA,T6
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Suitable for :Zone 1 & Zone 2 hazardous areas
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Enclosure protection: IP54
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Anti-corrosion Grade: WF1
Product Overview
The BDZ58 Series Explosion-Proof Circuit Breaker is designed for safe power distribution and circuit protection in hazardous environments where flammable gases or dust may be present.
This flameproof circuit breaker integrates overload protection, short-circuit protection, and safe switching functions within a rugged explosion-proof enclosure. It ensures reliable electrical isolation and safety control in industrial applications such as oil & gas facilities, chemical plants, and offshore platforms.
The unit is suitable for Zone 1 and Zone 2 gas hazardous areas and can also be used in dust explosive environments.
Application
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Oil & gas refineries
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Chemical and petrochemical plants
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Offshore platforms and marine environments
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Mining operations
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Power distribution systems in hazardous areas
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Industrial explosion-risk zones
Technical Parameters
| Item | BDZ58-IIB | BDZ58-IIC |
|---|---|---|
| Explosion Marking | Ex d e IIB T6 Gb/DIPA21TA,T | Ex d e IIC T6 Gb/DIPA21TA,T |
| Applicable Zone | Zone 1 & Zone 2 | Zone 1 & Zone 2 |
| Rated Voltage | AC 220V / 380V | AC 220V / 380V |
| Rated Current | 1A – 63A | 1A – 63A |
| Available Current Options | 1A, 3A, 6A, 10A, 16A, 20A, 25A, 32A, 40A, 50A, 63A | Same as IIB |
| Number of Poles | 1P, 2P, 3P, 4P | 1P, 2P, 3P, 4P |
| Breaking Capacity | 6kA | 6kA |
| Leakage Protection (Optional) | 30mA | 30mA |
| Protection Grade | IP65 | IP65 |
| Corrosion Protection | WF1 / WF2 | WF1 / WF2 |
| Cable Entry Direction | Top / Bottom | Top / Bottom |
| Cable Entry Size | G3/4, G1, G1 1/4 | G3/4, G1, G1 1/4 |
| Suitable Cable Diameter | Ø8–14mm / Ø12–17mm / Ø15–23mm | Same as IIB |
| Installation Method | Wall Mounted | Wall Mounted |
| Internal Components | MCCB / Mini Circuit Breaker | MCCB / Mini Circuit Breaker |
| Terminal Type | SAK Series | SAK Series |
| Standards | GB3836.1 / GB3836.2 / IEC60079 Series | Same |
Features
- The outer casing is made of ZL102 aluminum alloy die-casting with high-voltage electrostatic powder coating.
- It houses a high-breaking capacity miniature circuit breaker.
- It has overload and short-circuit protection functions, and can be equipped with leakage current protection devices and shunt trip units as required.
- It can be installed in steel conduit or cable wiring.
Outline & Mounting

Model Designation

Product Selection Table
| Current (A) | Available Poles | Recommended Cable Entry |
|---|---|---|
| 1 – 20A | 1P / 2P / 3P | G3/4 |
| 25 – 63A | 2P / 3P | G1 |
| 80 – 100A | 3P / 4P | G1 1/4 |
| 160 – 225A | 3P / 4P | G2 |
Why Choose Ex-ZS for Explsion Proof Electrical Equipments
Direct Manufacturer
Fast Sampling & Stable Delivery
Strict QC System
Get Custom Explosion-Proof Solutions in 24 Hours
Send us your drawings or application details — our engineers will respond within 24 hours.
Frequently Asked Questions
What’s your company main products?
The main business is to provide customers with Explosion Proof LED Lights, Explosion-Proof Electrical Equipment,Explosion-Proof & Anti-Corrosion,Explosion-Proof Conduit Fittings.
How about the price of the product?
We are a manufacturer, we mainly provide customized services for our customers, and we believe that our prices have enough advantages.
What does the customization service contain?
Customization is available for selected products. Our main customizable products include explosion-proof control stations, distribution boxes, and other explosion-proof electrical equipment. Customization may include configuration, size, cable entries, control components, and special project requirements.
Can we get the sample? Is it free?
Yes, we could offer the general box sample for free charge,but need you pay the express. The freight depends on weight, packing size and your country or province region, etc.
What’s about MOQ?
First order MOQ=1pcs.
How can I get product catalogs?
You can get the catalogs by contacting us.
How to order our product?
1.Please tell us the model and quantity and other request you need.
2.We make the PI for you.
3.After you confirm the PI, we arrange the order for you after receiving your payment.
4.After the goods finished, we send the goods out to you and tell you the tracking number.
5.We will track your goods until you receive the goods.
How about the after-sale service?
If you meet any problems after sales, pis contact us freely, we’ll help solving the problems within 24 hours.
What’s the payment term?
100% T/T (large order, accept 30% T/T prepay 70% balance before shipping), Western Union, Paypal.





