1
Panelboards
Reference Guide
Features
Siemens offers a complete line of
lighting and power distribution
panelboards, along with a full range of
fusible and circuit breaker devices. Also,
two and three pole breakers are
physically interchangeable with an
equivalent number of one pole breakers.
Lighting Panels
General – P1/P2: Interiors have the
ability to physically interchange two and
three pole breakers with an equivalent
number of one pole breakers. Panels
come standard with connectors suitable
for connection to copper or aluminum
cable. Panel interiors have adjustment
screws to provide easy alignment for
flush mounted applications. The interior is
provided with wing nuts for securing to
box without tools. Removable end walls
are standard and available blank and with
KO's. Panelboard box has a separate CSA
label and supplies wire bending and gut-
ter requirements to meet CSA standards.
Wiring gutters are completely free of any
part of trim clamp to prevent damaging
wire insulation. Deadfronts are provided
with a flange for easy attachment of trim.
Incoming cable lugs are grouped at one
end to separate them from the load side
cables. Individual circuit number button
with an embossed number next to each
breaker or provision are provided. The
interior shall be provided with wing nuts
for securing to box without tools. The
panel trim may be surface or flush and
is equipped with concealed hinges, flush
lock and a holder for circuit directory
card. Trim shall have two separate
supports designed to engage the box
flange to stabilize and secure the trim
during installation. Trim screws are
located behind the lockable door for
tamper resistance.
Interior – Type P1: Interiors may be
completely factory-assembled. Interiors
permit installation of feed-thru lugs or
a bus fed subfeed circuit breaker, up to
600 amperes, without increasing the
enclosure size. Interiors are
convertible from main lug to main
breaker with the addition of an
appropriate field-installable kit. Interior
are changeable from top to bottom feed
and vice-versa, while maintaining read-
ability of dead-front labeling. Main lugs
up to 350 mcm are lay-in construction to
facilitate connections. Neutral bussing is
located adjacent to the breaker load
terminals for easy wiring and shortest
cable run possible.
Interior – Type P2: Interiors are
completely factory-assembled. Incoming
cable lugs are grouped at one end to
separate them from the load side cables.
For easy wiring and shortest cable run
possible, load side neutral connection
lugs to be split with each side taking
50% of load neutral connections.
Application
Lighting:
Control centers for lighting and power
circuits in commercial and industrial
installations as well as residential where
extensive electrical systems are involved.
Power and Distribution — Control
centers for power and distribution circuits
as well as service equipment in larger
commercial and industrial installations.
Ratings
P1/P2: 1 phase, 3 wire,
3 phase, 3 or 4 wire; 120 through
600 Volts AC; 250 Volts DC; 125–600
amperes; main lug only, 50–600 amperes
main breakers; 600 amperes maximum
branch.
Specifications: All panelboards are
listed by Underwriters' Laboratories, Inc.
Interiors are listed under File #E2269.
Boxes and fronts are listed under
file #E4016 & CSA File #LR93833
Standards: Interiors – UL 67, NEMA
PB1 & CSA C22.2 No. 29
Enclosures – UL 50, NEMA
250 & CSA C22.2 No. 0.12
Circuit Breaker
Lighting Panelboard
Types P1
Circuit Breaker
Lighting Panelboard
Type P2
