CH0803 Ex Potentiometer Module Operating Head

Technical Data

1.Explosion-proof Type

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

2. Product Parameters

• Product Type: Explosion-proof potentiometer assembly (module + operating head), front-of-panel type & rear-of-panel type; single-turn / multi-turn, A/B module versions with plastic, metal and knurled-cap operating heads
• Certification / Explosion-proof Marking: Ex db eb IIC Gb / Ex tb IIIC Db, suitable for Zone 1/2 gas and Zone 21/22 dust hazardous locations
• Material: Housing injection-molded from custom engineering plastic
• Exposed Fasteners: TS35×7.5 DIN-rail and screw fastening, fits panel thickness 1-6 mm
• Electrical Rating-Rated Voltage: 250V
• Electrical Rating-Rated Power: Single-turn ＜1W, multi-turn ＜2W
• Protection-Ingress Protection: Module IP20, operating head IP66; anti-corrosion grade WF2
• Protection-Ambient Temperature: -40℃～+60℃
• Connection-Cable Cross-section: 3×1.5 mm² (3-meter cable pre-fitted for rear-of-panel version)
• Connection-Cable Entry: No built-in cable entry; module must be installed inside increased-safety explosion-proof enclosure
• Connection-Cable Gland: Cable glands supplied by external matched explosion-proof enclosure

3.Product Classification & Origin

HS Code:8543709990

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: It supports front-of-panel and rear-of-panel mounting, A/B module versions, single-turn and multi-turn options, as well as plastic, metal and cap-type operating heads for flexible adjustment. Featuring long service life, energy-saving and eco-friendly performance, it meets on-site speed and voltage regulation requirements.
• Safety Performance: With explosion-proof marking Ex db eb IIC Gb / Ex tb IIIC Db for Zone 1/2 gas and Zone 21/22 dust hazardous locations. The module is IP20 rated while operating head reaches IP66 with WF2 anti-corrosion grade. This component must be equipped with increased-safety or explosion-proof housing and cannot be used alone in explosive hazardous atmosphere.

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 explosion-proof marking of CH0803 explosion-proof potentiometer module?

A1: Its explosion-proof marking is Ex db eb IIC Gb / Ex tb IIIC Db.

 

Q2: Which hazardous locations is CH0803 potentiometer module suitable for?

A2: It is applicable to Zone 1, Zone 2 gas hazardous areas and Zone 21, Zone 22 combustible-dust hazardous locations.

 

Q3: Can the CH0803 explosion-proof potentiometer module work independently in explosive atmosphere?

A3: No, it must be matched with increased-safety enclosure and explosion-proof housing, and cannot be used alone.