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BT4 vs. CT6: Explosion-Proof Rating Comparison
IP Rating (Ingress Protection):
IP65: Dust-tight, low-pressure water jet-proof; suitable for general indoor industrial areas.
IP67: Dust-tight, temporary immersion-proof; ideal for outdoor, humid, or dusty locations.
IP68: Dust-tight, continuous immersion-proof; for underwater or extreme wet conditions.
Explosion-Proof Rating (Ex):
Non-hazardous areas: No explosion-proof rating required.
Zone 1/2 (gas): Select Exd (flameproof) or Exi (intrinsically safe) with appropriate gas group (IIB/IIC) and temperature class (T4–T6).
Zone 21/22 (dust): Choose Ex t (dust ignition-proof).
Key Selection Steps:
Assess the environment: Identify gas/dust hazards, humidity, dust levels, and temperature range.
Match IP rating to environmental conditions.
Select Ex rating based on hazardous area classification and gas/dust type.
Verify certifications: ATEX, IECEx, UL, et
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