1
Instruction Bulletin
48049-251-01
02/2006
Cedar Rapids, IA, USA
ECN 733C Replaces 48049-251-01 03/2004
M-frame Circuit Breakers
Retain for future use.
© 2003–2006 Schneider Electric All Rights Reserved
NECESSARY TOOLS Screwdriver, Pozidriv
®
#2 or 3, or slotted
Socket Wrench, 7 mm internal hex
Screwdriver, long-shanked slotted
Torque Wrench, 5/16 in. or 8 mm
INSTALL CIRCUIT BREAKER
Individually-mounted Circuit Breaker
Installation
1. Turn off all power supplying this equipment
before working on or inside equipment.
2. Make sure circuit breaker is in tripped or off
position
DANGER
HAZARD OF ELECTRIC SHOCK, EXPLOSION OR ARC FLASH
• Apply appropriate personal protective equipment (PPE) and follow safe
electrical work practices.See NFPA 70E.
• This equipment must be installed and serviced only by qualified electrical
personnel.
• Turn off all power supplying this equipment before working on or inside
equipment.
• Always use a properly rated voltage sensing device to confirm power is off.
• Replace all devices, doors and covers before turning on power to this
equipment.
Failure to follow this instruction will result in death or serious injury.
DANGER
HAZARD OF ELECTRIC SHOCK,
EXPLOSION OR ARC FLASH
Install circuit breaker so minimum clearance
distance to grounded metal is maintained.
Failure to follow this instruction will result
in death or serious injury.
3. Check clearances between circuit breaker
and closest grounded metal. (Minimum
enclosure dimensions are given in Table 5.)
Figure 1: Minimum Clearance to Metal Requirement
Dimensions:
in.
[mm]
48096-448-01
1.1
[27,9]
min.
1.1
[27,9]
min.
0 min.
0 min.
Retain for future use.
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