MMFFEX51 Explosion Proof Junction Box

 Technical Data

1.Explosion-proof Type

• Standards Implemented:GB3836.1, GB3836.3, GB12476.1; compatible with CENELEC, IEC, NEC standardsApplicable Hazardous Areas:
• Explosive gas atmosphere:Gas Zone 1, Zone 2 (Group IIA~IIC); Dust Zone 21, Zone 22
• Ex Marking: Gas protection:Ex eb ⅡC T4/T5/T6 Gb; Ex tb ⅢC T95℃/T80℃/T130℃ Db; Ex ia ⅡC T6 Ga

2. Product Parameters

• Product Type
• Increased-safety explosion-proof junction box, suitable for explosive gas Zone 1, Zone 2 and combustible dust Zone 21, Zone 22 hazardous areas.
• Certification & Explosion-proof Marks
• Explosion-proof marking: Ex eb ⅡC T4/T5/T6 Gb; Ex tb ⅢC T95℃/T80℃/T130℃ Db Ex ia ⅡC T6 Ga
• Compliant standards: GB3836.1, GB3836.3, GB12476.1; compatible with CENELEC, IEC, NEC standards.

 

• Material
• Enclosure: GRP glass-reinforced unsaturated polyester resin (fiberglass engineering plastic), anti-static, surface insulation resistance 7Ω-10Ω.
• Exposed Fasteners
• Stainless steel anti-drop exposed fasteners.

 

• Electrical Data
• Rated Voltage；10~63A version: AC 240V, 415V, 690V; DC 110/220V ≤5A version: AC/DC ≤36V
• Rated Current；10A, 16A, 25A, 32A, 63A; ≤5A optional.

 

• Protection
• Ingress Protection Grade；IP66
• Anti-corrosion Grade；WF2
• Ambient Temperature；-40℃ ~ +60℃

 

• Connection & Inlet
• Cable Cross-section；Depends on terminal specifications, terminal sizes cover 1.5mm², 2.5mm², 4mm², 6mm², 10mm², 16mm², 35mm², DIN rail-mount terminals.
• Cable Entry；Multiple entry directions: top-inlet, left-inlet, bottom-inlet, right-inlet. Enclosure size No.1-No.7 available; single-unit or combined-unit assembly optional.

3.Product Classification & Origin

HS Code: 8536909000
Country of Origin: China

4.Applicable Industries

• For explosive gas atmospheres of Group ⅡA ~ ⅡC in Zone 1, Zone 2; and/or combustible dust hazardous locations Zone 21, Zone 22.
• Temperature class: T1-T6.
• Suitable for indoor and outdoor installation (IP66).
• Applied in hazardous locations such as chemical industry, oil refining, petroleum extraction, offshore oil platforms, oil tankers and military-industry sites.

5. Credibility

MMALATEX explosion-proof products comply with strict international standards and hold complete ATEX, IECEX and EAC certifications to ensure compliant operation in global markets. This series of explosion-proof products is engineered for extreme working conditions with IP65/IP66/IP67 protection ratings, delivering excellent resistance to water, dust and corrosion. We provide customers with in-depth supporting services, including comprehensive technical support, complete warranty services and worldwide logistics support. Wherever your project is located, MMALATEX ensures smooth project delivery and provides safe and reliable solutions for hazardous areas.

6.FAQs

Q1: What is the enclosure material of YXBJX51 explosion-proof junction box and its main performances?

A1: The enclosure is made of GRP glass-fiber reinforced unsaturated polyester resin, anti-static, corrosion-resistant, impact-resistant and thermally stable. Exposed fasteners are stainless-steel anti-drop type for easy installation and maintenance.

 

Q2: What hazardous locations can YXBJX51 explosion-proof junction box be applied to, what is its ingress protection rating?

A2: It applies to Zone1/Zone2 Group ⅡA-ⅡC explosive gas atmosphere, Zone21/Zone22 combustible dust locations, temperature class T1-T6. IP66 ingress protection, WF2 anti-corrosion grade, suitable for indoor & outdoor, widely used in chemical, oil refining, offshore oil platform, oil tanker and other hazardous sites.

 

Q3: What cable entry thread sizes are available for YXBJX51 explosion-proof junction box?

A3: It supports both imperial G-thread and metric M-thread explosion-proof cable glands. Imperial: G1/2, G3/4, G1, G1-1/4, G1-1/2, G2. Metric: M16, M20, M25, M32, M40, M50, M63, fit for various cable outer diameters.