Brochure
PowerPact H-, J-, and L-Frame Circuit Breakers
General Information
12
02/2016 © 2011–2016 Schneider Electric
All Rights Reserved
Protection of distribution
systems
Mission critical applications
The PowerPact H-, J-, and L-frame circuit breakers provide protection against short circuits and
overloads for:
• distribution systems supplied by transformers
• distribution systems supplied by engine generator sets
They are easily installed at all levels in distribution systems, from the main LV switchboard to the
subdistribution boards and enclosures. All PowerPact circuit breakers can protect against
insulation faults by adding an external Vigirex relay.
The PowerPact H-, J-, and L-frame mission critical circuit breakers provide high levels of
selective coordination with QO and ED/EG/EJ circuit breakers.
Protection of motors
The PowerPact H-, J-, and L-frame circuit breakers include a number of versions to protect
motor applications:
• basic short-circuit protection with electronic instantaneous only MCP or the electronic
Micrologic 1.3 M trip units, combined with a special overload relay to provide thermal
protection
• protection against overloads, short circuit and phase unbalance or loss with Micrologic 2 M
trip units
The exceptional limiting capacity of the PowerPact circuit breakers automatically provides
coordination with the motor starter.
Protection of special
applications
The PowerPact H-, J-, and L-frame circuit breakers offer a number of version for special
protection applications:
• industrial control panels with:
— compliance with international standards IEC 60947-2 and UL 508/CSA 22.2 N°14
— compliance with UL 489
— installation in universal and functional enclosures
• 400 Hz systems
Control using automatic
switches
An automatic switch version of PowerPact H-, J-, and L-frame circuit breakers is available for
circuit control. All add-on functions for the circuit breakers may be combined with the basic
automatic switch function, including motor operators.
For information on other automatic switches, contact Schneider Electric.
Manual transfer systems
To ensure a continuous supply of power, some electrical installations are connected to two
power systems:
• the normal source, usually the utility (U)
• a replacement source to supply the installation when the normal source is not available,
generally from a generator (G)
A mechanical and/or electrical interlocking system between two circuit breakers or automatic
switches avoids all risk of parallel connection of the sources during switching.
A system can be manual transfer mechanical device interlocking.
Table 5: Applications
G
rciMcigolo
E
2
.5
r
I
%
A
0
3
>
0
3
>
0
1
1
>
.
9
2
9
.
3
9
.
4
9
.
5
9
.
1
8
9
.
7
9
.
6
9
.
I
r
)
o
I
x
(
5
.
1
2
5
.
2
3
4
0
1
8
6
5
d
s
I
)
r
I
x
(
rciMcigolo
E
2
.5
r
I
%
A
0
3
>
0
3
>
0
1
1
>
.
9
2
9
.
3
9
.
4
9
.
5
9
.
1
8
9
.
7
9
.
6
9
.
Ir
)
o
I
x
(
5
.
1
2
5
.
2
3
4
0
1
8
6
5
d
s
I
)
r
I
x
(
rciMcigolo
E
2
.5
r
I
%
A
0
3
>
0
3
>
0
1
1
>
.9
2
9
.
3
9.
4
9
.
59
.
1
8
9
.
7
9
.
6
9
.
I
r
)
o
I
x
(
5
.
1
2
5
.
2
3
4
0
1
8
6
5
ds
I
)
r
I
x
(
rciMcigolo
E
2
.5
r
I
%
A
0
3
>
0
3
>
0
1
1
>
.
9
2
9
.
3
9
.
4
9
.
5
9
.
1
8
9
.
7
9
.
6
9.
I
r
)
o
I
x(
5
.
1
2
5
.
2
3
4
0
1
8
6
5
d
s
I
)
r
I
x
(
rciMcigolo
E
2
.5
r
I
%
A
0
3
>
0
3
>
0
1
1
>
.9
2
9
.
3
9
.
4
9
.
5
9
.
1
8
9
.
7
9
.
6
9
.
I
r
)
o
I
x
(
5
.
1
2
5
.
2
3
4
0
1
8
6
5
d
s
I
)
r
I
x
(
Main Alternate
U
G