Specifications

22
NEMA Enclosure Type
Structures are available with the following NEMA
Enclosure Type ratings.
• NEMA Type 1
• NEMA Type 1 with gasketing around
perimeter of unit doors
• NEMA Type 12
• NEMA Type 3R (non walk-in)
• NEMA Type 4 (non walk-in)
Structure sheet metal has rounded edges and is tightly
fitted with no visible air gaps. See Technical Standards and
Certifications, page 97
for more information.
Operating Environment
The MCC is designed to operate in an ambient operating
temperature range of 0…40 °C (32…104 °F) with up to
95% non-condensing humidity.
The MCC is designed to operate at altitudes up to 2000 m
(6600 ft) without derating. For MCCs with variable
frequency drives, the MCC may be operated at altitudes up
to 1000 m (3300 ft) without derating.
Paint and Plating
Structural metal undergoes a multi-step cleaning, rinsing
and painting process resulting in complete
uniform-thickness, paint coverage. This process is
maintained and controlled by ISO 9001 quality standards.
Unpainted surfaces for corrosion resistance.
Interior vertical wireways and unit mounting plates are
painted high-visibility gloss white.
Technical Data
Standards Certifications & Listings NEMA ICS-18, UL845, CSA C22.2 No. 14 and EN 60439-1
NEMA Type 1 (IP20, IP30, IP40)
1 with gasketing around perimeter of unit doors (IP20, IP30, IP40)
12 (IP54)
3R non walk-in (IP44)
4 non walk-in (IP65)
Bus Material and
Plating
Horizontal Bus Rating 600 A; 800 A; 1200 A; 1600 A; 2000 A; 2500A or 3000A
Horizontal Bus Withstand
Rating
42 kA; 65 kA or 100 kA
Horizontal Bus Material Aluminum with Tin-plating; Copper with Tin-plating or Copper with Silver-plating
Vertical Bus Rating 300 A (600 A effective) or 600 A (1200 A effective)
Vertical Bus Material Copper with Tin-plating or Copper with Silver-plating (matches horizontal bus material)
Unit Design Unit Size 6.5” (165 mm) high x 14” (356 mm) wide = half space factor
13” (330 mm) high x 14” (356 mm) wide = one space factor
Unit designs are in 0.5 space factor increments
Maximum Space Factors per
Section
6
Structural Surface
Treatments
Exterior
(NEMA Type 1, 1G, 12)
ANSI 49 - Medium Light Gray
Exterior (NEMA Type 3R) UV Resistant High Gloss White - Recognized by UL for outdoor use
Exterior (NEMA Type 4) Unpainted Stainless Steel
Interior ANSI 49 - Medium Light Gray; High Visibility White Gloss (vertical wireways and unit back
plates)
Environment Storage Temperature 32…104 °F (0…40 °C) with up to 95% non-condensing humidity
Operating (Ambient)
Temp erat ure
32…104 °F (0…40 °C) with up to 95% non-condensing humidity
Altitude 6600 feet (2km)
MCC Finish
NEMA
Enclosure Type
Exterior Finish
1, 1G, 12 ANSI 49, Medium Light Grey
3R High Gloss White (for outside use)
4 Stainless Steel