ARC ARMOR™ Enclosure Overview

The innovative, multiple compartment design of the ARC ARMOR™ ENCLOSURE reduces the risk of injury resulting from arc flash and electric shock. The control and power circuitry are isolated in separate compartments, thus preventing unnecessary exposure to operators. The unique enclosure design includes:

Zone 1 - Service Entrance Compartment:
- Danger Zone: contains the most dangerous arc flash potential and risk of electrical shock
- Entry is limited to authorized personnel only and proper personal protection equipment (PPE) must be used
- All service entrance devices and conductors are confined to this compartment to avoid accidental contact or faults
- Isolated from potential corrosive gases
- Locker-style service entrance
- Can be service entrance rated
- NEMA 3R enclosure rating

 

 

 

 

 

 

 

 
Zone 1 - Service Entrance Compartment

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Zone 2 - MCC Compartment
- Danger Zone: entry is limited when energized to service personnel with proper NFPA 70 safety gear or may be "Lockout/Tagout" protected for unrestricted access
- Can be completely de-energized from line voltage
- Contains motor control devices that are full voltage rated
- Isolated from potential corrosive gases
- Thermal Management: environmentally-conditioned independent from other zones (i.e. VFD cooling)
- NEMA 3R enclosure rating

 

 

 

 

 

 

 
Zone 2 - MCC Compartment

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Zone 3 - Controls Compartment
- Operator Safety Zone (120VAC or lower only)
- Minimum PPE required
- Houses all sensitive control devices and maintains complete isolation from high energy power components
- System operation and low voltage troubleshooting can be accomplished while being isolated from potential arc flash risks
- Isolated from corrosive gases
- NEMA 4X enclosure rating

 

 

 

 

 

 

 

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Zone 4 - Skirt Compartment
- Gas Isolation Zone: provides gas isolation from wet well in wastewater lift station lift station applications
- Can be used to house the control transformer
- Vented space for sealing cable penetrations

 

 

 

 

 

 

 

 

 
Zone 4 - Gas Isolation Chamber