Specification

QO
®
and Homeline
®
Load Centers and Enclosures
General Information and Application Data
17
03/2007
© 2007 Schneider Electric All Rights Reserved
Accessories (Continued)
Surgebreaker
®
Secondary Surge Arrester
 QO2175SB UL Listed secondary surge arrester
 Easy plug-on installation for QO
®
load centers
 LED indicates operational status
 Plug-on design requires two pole spaces
 Designed to protect electrical service and major household appliances,
excluding electronic devices
Back-Fed Main Circuit Breaker Retaining Kits
Back-fed main circuit breaker retaining kits secure 2-pole, 10125 A circuit
breakers to single-phase or three-phase mains interiors when used as
back-fed main circuit breakers. Mounting of retaining kits is based on
top-feed applications.
UL Listed Manual Transfer Equipment Kits
Manual transfer equipment kits secure two 2-pole, 10 125 A circuit breakers.
Generator Circuit Breaker Interlock Kit
Catalog No. Description
PK2MB QO 61 2, 4 8, and 816 loa d centers
PK3MB Three-phase load centers
PK4MB2LA
Mounts on the right side of QO single-phase, 100125 A convertible main load
center, series S01 and S02. Retains one 2-pole QO circuit breaker with or
without electrical accessories.
PK4MB2HA
Mounts on the right side of QO single-phase, 150225 A convertible main load
center, series S01 and S02. Retains one 2-pole QO circuit breaker with or
without electrical accessories.
Catalog No. Description
QO2DTI
For interlocking the handles of two 2-pole or one 2-pole and one 1-pole QO
and Q1 circuit breakers mounted side-by-side so that only one circuit breaker
can be ON at a time.
QO2DTIM
QO2DTI mechanical interlock attachment with retaining kits for securing two
adjacent back-fed circuit breakers in dual power supply applications. Can be
used with two 2-pole or one 2-pole and one 1-pole QO circuit breakers in
QO816L100 load centers.
PK4DTIM4LA
Mounts on the right side of QO single-phase, 100125 A convertible main load
center, series S01 and S02. Retains two 2-pole QO circuit breakers with a
QO2DTI kit included for dual power supply applications.
PK4DTIM4HA
Mounts on the right side of QO single-phase, 150225 A convertible main load
center, series S01 and S02. Retains two 2-pole QO circuit breakers with a
QO2DTI kit included for dual power supply applications.
PK4DTIM4LAL
Mounts on the left side of QO single-phase, 1001 25 A convertible main load
center, series S01 and S02. Retains two 2-pole QO circuit breakers with a
QO2DTI kit included for dual power supply applications.
Catalog No. Description
QOCRBGK1
For use on "G" and "S" Series NEMA Type 1 and "G", "S1" and "S2" Series
NEMA Type 3R load centers. Interlocks a QOM1, 2-pole main circuit breaker
of a load center (100-125 A) with a QO, 2-pole (15-125 A) branch circuit
breaker. Includes a retaining kit.
QOCGK2
For use on G and S Series NEMA Type 1 and G and S1 Series NEMA
Type 3R load centers. Interlocks a QOM2, 2-pole main circuit breaker of a
load center (15022 5 A) with a QO 2-pole (1512 5 A) branch circuit breaker.
Includes a retaining kit.
QORBGK2
For use on S2 Series NEMA Type 3R load centers. Interlocks a QOM2 2-pole
main circuit breaker of a load center (150 225 A) with a QO 2-pole (151 25 A)
branch circuit breaker. Includes a retaining kit.
QO2175SB
Back-fed Main Circuit Breaker
Retaining Kit (PK4MB2LA)
QO Manual Transfer
Equipment Kit (PK4DTIM4HA)
Generator Interlock Kit Installed