Cardinal Explosion-Proof Enclosure

Cardinal Explosion-Proof Enclosure

Contact ExDirect to discuss your specific agency approval requirements.

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Cardinal Enclosure Vertical View Cardinal Enclosure Solid or Glass Front

The Cardinal instrument enclosure is ExDirect’s smallest, most economical explosion-proof instrument enclosure. It is stocked with solid and window covers in several different conduit configurations. The mounting holes on the flanges are a standard feature. Inside the instrument enclosure, there are four drilled and tapped holes for mounting electronics.


Material: Copper free aluminum
Surface Finish: Epoxy coated for aluminum
Casting Method: Die cast (smoother, more uniform finish than sand casting)
Ground Screws: Internal and external
Cover Set Screw: Tamper resistant cover set screw for extra safety
Weight: 3 lbs (1.36 kg)
Patent No.: US 8,227,692
Window Size: 2.17" [55.0mm] diameter
External Mounting Holes: Two 0.36" [9.0mm]
Side Conduit Connections (T2): Two ½" NPT, ¾" NPT, M20 × 1.5P, ½" BSP, or none
Top Conduit Connection (T1): One ½" NPT, ¾" NPT, M20 × 1.5P, ½" BSP, or none
Stopping Plugs: Shipped with one ATEX approved stopping plug installed


ExDirect explosion-proof instrument enclosures can be used in hazardous areas around the world, with popular approvals common in the US, Canada, Europe, and elsewhere. Contact ExDirect to discuss the specific agency approval needs, such as Class, Division, Zone, and preferred agency; and for the appropriate agency certification documents. In addition to hazardous area approvals, all enclosures are also Type 4X/IP 66 or IP68.

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Cardinal Drawing