Specifications

Power-Zone
®
4
Suggested Specifications
93
11/2005
© 2005 Schneider Electric All Rights Reserved
Available short-circuit current ratings are outlined below.
Powerzone 4 switchgear is designed for use on 50 Hz or 60 Hz electrical systems up to 600 Vac and
shall be properly braced to the ratings of the Masterpact NW and NT circuit breakers installed within
the switchgear.
PRODUCTS
Manufacturers
Power-Zone 4 switchgear shall be manufactured by Schneider Electric company. The Masterpact NW
and NT circuit breakers shall be manufactured by Schneider Electric company.
Structure
Structure specifications for the Power-Zone 4 switchgear are outlined below.
General
A. Each steel section of the switchgear shall contain one or more individual circuit breaker
compartments or auxiliary instrument compartments, as well as a bus compartment and rear
compartment for outgoing cable connections.
B. A rigid removable steel base channel shall be provided at the front and rear of each section.
C. The exterior and interior switchgear finish shall be medium ANSI #49 gray.
Dimensions
A. Section widths shall be 22-inches, 30-inches, or 36-inches wide, depending on the size of the
Masterpact NW and NT circuit breakers being installed in the switchgear.
B. The switchgear lineup shall provide adequate wire bending space for main and feeder Masterpact
NW and NT circuit breakers using up to 750 kcmil wires.
C. Section depth shall be 54-inches minimum when using 800 A feeders. Additional depth to the
lineup shall be for the sole purpose of additional wire bending and conduit space.
D. Adequate conduit space that allows all conductors to exit the section at the same location.
Moving and Handling
A. The switchgear lineup shall be divided into shipping splits not to exceed 88-inches wide and shall
be capable of being lifted overhead or by using a forklift.
B. Each shipping split shall have removable lifting straps.
C. Removable base channels shall be provided with prying slots for ease of final positioning at the job
site.
D. For Masterpact NW and NT circuit breakers, an overhead lifter or floor crane shall be provided to
ease the installation or removal of circuit breakers in excess of 75 pounds.
Circuit Breaker Compartment
Power-Zone 4 switchgear circuit breaker compartments shall contain Masterpact NW and NT circuit
breakers with Micrologic trip units.
Short-Circuit Current Rating
Short-Time Close and Latch
240 V 480 V 600 V
42 kA 42 kA 42 kA 42 kA 42 kA
65 kA 65 kA 65 kA 65 kA 65 kA
85 kA 85 kA 85 kA 85 kA 50 kA
200 kA 200 kA 130 kA 30 kA (minimum) 22 kA (minimum)