Core Protection Methods

• Explosion-Proof (Ex d): Heavy-duty enclosures designed to contain an internal explosion so it cannot ignite the outside environment.
• Intrinsically Safe (Ex i): Circuits limited to such low energy levels that they cannot generate a spark or heat sufficient for ignition.
• Increased Safety (Ex e): Enhanced design features that prevent the occurrence of sparks, arcs, or hot surfaces during normal operation.
• Pressurized (Ex p): Maintains a positive internal pressure with clean air to keep flammable gases out of the equipment housing.
• Encapsulated (Ex m): Potentially sparking parts are sealed in resin to isolate them from the explosive atmosphere.