Expo’s Interface Units provide switching of power and signals to the pressurized enclosure, using a control signal from the purge system. This capability is required for enclosures installed in Zone 1/21 or Class I/II Div 1 hazardous locations.
2 types are available:
MiniPurge Interface Unit (MIU) – for pneumatic connection to a MiniPurge (with PO option)
SmartPurge Interface Unit (SIU) – for electrical connection to a SmartPurge
Standard units are available in 3 sizes of flame-proof / explosion-proof boxes, with a range of electrical and signal switching capacities.
Custom sizes and contents can be designed to meet specific project requirements.