Specification
QO
®
 and Homeline
®
 Load Centers and Enclosures
General Information and Application Data
6
© 2007 Schneider Electric All Rights Reserved 03/2007
Indoor Enclosures (Type 1)
Welded sheet steel with knockouts at top, bottom, back, and sides
 Finish: gray baked enamel, electrodeposited over cleaned, 
phosphatized steel 
 Most 100 225 A indoor enclosures are 14.25 in. (362 mm) wide (see 
Dimensions and Knockouts on page 26)
 300 A and 400 A indoor enclosures are 20 in. (508 mm) wide
 Top or bottom feed by rotating enclosure
Indoor Covers
Doors to cover circuit breaker handles, except on 24,  48, 612 , and 
816  circuit models
 Shutter-type twistouts
 Flush and surface covers available, sold separately
 Flush covers have automatic flush adjustment 
 Field-installed door lock provisions available on most covers
 QOFP filler plates available for all covers
 QOM1FP filler plates available for 1001 25 A convertible load center 
covers
 QOM2FP filler plates available for 1502 25 A convertible load center 
covers
 Q2FP filler plates available for 3-phase load center covers
 Triple lead cover screws for fast cover installation
Rainproof Enclosures (Type 3R)
Complete enclosure includes interior trim and door
 Welded, galvannealed steel
 Finish: gray baked enamel, electrodeposited over cleaned, 
phosphatized, galvannealed steel
 RB devices have provisions for interchangeable bolt-on hub
 Top-centered rainproof mounting boss on the back of the enclosure 
simplifies installation and saves time
 Stainless steel door latch on the enclosure provides secure closure and 
maximum durability
 Convertible main panels are side-hinge door devices
 Allow 1.25 in. (32 mm) on the left side for the door to open
 Side-hinged door provides full wiring access without door removal
Bolt-On Hubs
Hubs available from 0.75 in. (19 mm) to 4 in. (102 mm) conduit size
 No gasket required with hubs from 0.75 in. (19 mm) to 2.50 in. (64 mm) 
when used on RB type load centers
QO130M150
Indoor Cover
QO140M200RB
Bolt-On Hubs










