Speedfax 2017

Panelboards
Circuit Breaker / Column Type
General
11
PANELBOARDS
Type C1
240 Volts AC Maximum
250 Ampere Mains
250 Ampere Maximum Branch
UL Short Circuit Rating —
200,000 IR Maximum
Branch Breaker Symmetrical
Interrupting Rating
Based on Underwriters’ Test Procedure
Type C2
480Y/277 Volts AC Maximum
250 Ampere Mains
250 Ampere Maximum Branch
UL Short Circuit Rating —
100,000 IR Maximum
Meets NEC wire bending requirement,
section 312–6.
Panelboards
Listed by Underwriter’s Laboratories,
Inc., under “Panelboards” File #E2269.
Meets Federal Specification
W–C375B/Gen.
Service
240 Volts Maximum. 1-Phase, 3-Wire, or
3-Phase, 4-Wire.
Panelboards Fronts and Doors
Standard panelboards are furnished with
trim with a flush door lock. All are factory
assembled for ease of installation. Fronts
are fabricated from code gauge steel and
finished ANSI-61.
Main Breakers C1
BL, BLH and HBL frame breakers are
mounted horizontally. All other frames
are mounted vertically.
Main Breakers C2
BQD frame breakers are mounted
horizontally. All other frames are
mounted vertically.
Boxes
C1 — 7 5 ⁄8" wide, 5 3 ⁄4" deep.
C2 — 8 1 ⁄2" wide, 5 3 ⁄4" deep.
Branch Breaker Side Gutters
Circuit
Side Gutter
Type Breaker (inches)
C1 BL, BLH, HBL 3.505
C2 BQD 3.5
Weight–Approximate
Total panelboard weight when filled with
a normal quantity of breakers and
accessories is:
*About 3 lbs. per inch of box height.
Gauge Steel Boxes
Type Width Height Gauge Steel
C1 7 5 ⁄8" 48", 73", 85" #14
C2 8 1 ⁄2" 48", 73", 85" #14
Fronts
C1 7 5 ⁄8" 48", 73", 85"* #14
C2 8 1 ⁄2" 48", 73", 85"* #14
*Note: Feed thru lugs and subfeed breaker not available
for this height.
Main Breaker Connectors
Ampere
Rating Connectors suitable for Cu or Al
100 (1) #14–1/0 AWG
125 (1) #4–1/0 AWG
225 (1) #6 AWG–300 kcmil
250 (1) #4 AWG–350 kcmil Al
(1) #6 AWG–350 kcmil Cu
Main Lugs
125 (1) #6 AWG–350 kcmil
250 (1) #6 AWG–350 kcmil
For inches / millimeters conversion,
see Application Data section.
a Connector ranges indicated do not apply to all main breaker types. Refer to
molded case circuit breaker standard pressure wire connectors in the breaker
section of this catalog for the wire ranges for a specific breaker frame.
11-98
Siemens Industry, Inc. SPEEDFAX Product Catalog