CH8000-K7 Flameproof Changeover Switch

Technical Data

1.Explosion-proof Type

• Standards Implemented: CENELEC, IEC, NEC
• Applicable Hazardous Areas:Zone 1, Zone 2 for explosive gas atmospheres; Zone 21, Zone 22 for combustible-dust atmospheres
• Ex Marking: Ex db IIC Gb / Ex tb III Db

2.Product Parameters

• Product Type: Flame-proof change-over switch with multi-pole options and various operating handles. Mounted on flame-proof enclosure panel for circuit switching. Cannot be used independently and must work with flame-proof enclosure.
• Certification / Explosion-proof Marking: Ex db IIC Gb / Ex tb III Db. Suitable for Zone 1/2 explosive gas atmospheres and Zone 21/22 combustible-dust atmospheres.
• Material: Handles available in aluminum alloy, stainless steel and plastic.
• Exposed Fasteners: Flame-proof thread M25×1.5, M30×1.5 for panel-mount locking.
• Electrical-Rated Voltage: AC 400V; DC 110V
• Electrical-Rated Current: AC 16A, DC 1A; maximum rated current 25A
• Protection-Ingress Protection: IP66
• Protection-Ambient Temperature: Ambient temperature −40℃～+60℃; operating temperature −40℃～+75℃
• Connection-Cable Cross-section: No cable supplied with switch; cable cross-section selected according to site load conditions.
• Connection-Cable Entry: No cable entry on the switch unit. Cable entry is located on the matching flame-proof enclosure.
• Connection-Cable Gland: Provided by the supporting flame-proof enclosure.

3.Product Classification & Origin

HS Code: 8536500000

Country of Origin: China

4.Applicable Industries

• Suitable for: Petrochemical, coal-chemical, pharmaceutical, coating, mining, oil-gas storage & transportation, sewage treatment and other industries with explosive gas and combustible-dust hazardous working conditions.
• Practicality: Multiple handle styles are available in aluminum alloy or stainless steel. Various pole options with flame-proof thread M25×1.5, M30×1.5 for panel mounting on flame-proof enclosures. Supports AC and DC circuits with maximum rated current 25A and abundant switch positions.
• Safety Performance: Explosion-proof marking Ex db IIC Gb / Ex tb III Db, applicable for Zone 1/2 explosive gas atmospheres and Zone 21/22 combustible-dust atmospheres. Protection grade IP66, ambient operating temperature −40℃～+60℃. It cannot be used independently and must be assembled with flame-proof enclosure.

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 maximum rated current of CH8000-K7 flame-proof change-over switch?

A1: Its maximum rated current is 25A.

 

Q2: What explosion-proof zones can CH8000-K7 switch be applied to?

A2: It is suitable for Zone 1, Zone 2 explosive gas atmospheres and Zone 21, Zone 22 combustible-dust atmospheres.

 

Q3: Can the CH8000-K7 switch work without matching flame-proof enclosure?

A3: No, it must be used together with flame-proof enclosure and cannot be used alone.