QUALITY SWITCHGEAR, INC.
Quality Switchgear is a leader in supplying Square D SEF and SED insulated case
breakers to the commercial and industrial markets. We have a wealth of experience
working with these breakers and can repair most models.

If you have an older vintage Quality Switchgear can help retrofil existing switchgear
with the newer Square D Micrologic™  Series trip unit models. We have new surplus
and reconditioned models in stock. All our circuit breakers carry a full 1 year warranty.
If you need something in a hurry feel free to call us anytime
24hr/day we can get you
up and running same day in most cases.
SED364000LSG SQUARE D
Service and Repair
Recondition Test and Calibrate
Retrofit to existing switchboards
Shunt trips, Undervoltage devices, Auxillary Contacts
Square D type SEF breakers
Catalog #        frame  mounting        trip unit
SEF36250LSG     400A FIXED MT.  L,S,I,G functions   
SEF36800LSG     800A FIXED MT.  L,S,I,G functions
SEF361200LSG 1200A FIXED MT.  L,S,I,G functions
SEF361600LSG 1600A FIXED MT.  L,S,I,G functions
SEF362000LSG 2000A FIXED MT.  L,S,I,G functions
SEF362500LSG 2500A FIXED MT.  L,S,I,G functions
SEF363000LSG 3000A FIXED MT.  L,S,I,G functions
SEF364000LSG 4000A FIXED MT.  L,S,I,G functions
Trip unit suffix can be specified as :
L = long time
S= short time
I = instantaneous
G = Ground fault    *All models come with adjustable Long time and Instantaneous trip settings.
SED and SEF catalog in PDF format
General Information for tech weenies:

Square D electronic trip insulated case circuit breakers are
equipped with the MICROLOGIC Full-function Trip System. This
trip system provides adjustable tripping functions and characteristics
using true root-mean-square (rms) current sensing.
MICROLOGIC trip systems use a set of current transformers
(called CTs or sensors) to sense current, a full-function trip unit
to evaluate the current, and a tripping solenoid to trip the circuit
breaker. Adjustable rotary switches on the trip unit allow the
user to set the proper overcurrent or ground current protection
required in the electrical system. If current exceeds a set value
for longer than its set time delay, the trip system opens the
circuit breaker.
Circuit breakers are shipped with the long-time pickup switch
set at 1.0 and all other trip unit adjustments set at their lowest
settings. Actual settings required for a specific application must
be determined by a qualified consultant or plant engineer. A
coordination study is recommended to provide coordination
between all circuit breakers in the distribution system.

RMS Sensing

The sensing system on an electronic trip insulated case circuit
breaker responds to the flow of current through the circuit
breaker. Electronic trip circuit breakers are limited to ac systems
because the electronic trip system uses current transformers to
sense the current.

The MICROLOGIC trip system samples the current waveform
33 times per cycle on a 60 Hz system. It then uses this data to
calculate the true rms current through the 13th harmonic.
This true rms sensing gives accurate values for the magnitude
of a non-sinusoidal waveform. Therefore, the heating effects of
harmonically distorted waveforms are accurately evaluated.
Electronic trip circuit breakers with MICROLOGIC trip systems
can be used on 50/60 Hz systems with alternating current (ac)
to direct current (dc), dc to ac, and ac to ac converters. This
includes applications that use silicon-controlled rectifiers
(SCRs) and adjustable frequency controls.

Rating Plugs

Rating plugs are used to determine the circuit breaker ampere
rating (P) according to the following equation:
The ampere rating and the long-time pickup switch are then
combined to determine the circuit breaker continuous current
rating. For example:
Rating plugs are available with multiplier values ranging from
0.40 to 1.00. If the rating plug is not installed, the circuit breaker
will operate safely, but the trip unit will default to a rating plug
multiplier of 0.40.
Rating plugs and ammeter/trip indicators are subject to damage
from static charge. Internal damage can result if these devices
are handled by their contacts. If either device is removed from
the trip unit, it must be held against grounded metal, such as the
metal circuit breaker enclosure, for at least two seconds before
reinstalling.
Square D type SED breakers
Catalog #        frame  mounting        trip unit
SED36250LSG     400A DRAW OUT  L,S,I,G functions  
SED361200LSG 1200A DRAW OUT  L,S,I,G functions
SED361600LSG 1600A DRAW OUT  L,S,I,G functions
SED362000LSG 2000A DRAW OUT  L,S,I,G functions
SED362500LSG 2500A DRAW OUT  L,S,I,G functions
SED363000LSG 3000A DRAW OUT  L,S,I,G functions
SED364000LSG 4000A DRAW OUT  L,S,I,G functions
SQUARE D SED AND SEF
INSULATED CASE CIRCUIT BREAKERS
SED36250LI
SED36300LI
SED36350LI
SED36400LI
SED36200LS
SED36250LS
SED36300LS
SED36350LS
SED36400LS
SED36200LIG
SED36250LIG
SED36300LIG
SED36350LIG
SED36400LIG
SED36200LSGS
ED36250LSG
SED36300LSG
SED36350LSG
SED36400LSG
SEHD36200LI
SEHD36250LI
SEHD36300LI
SEHD36350LI
SEHD36400LI
SEHD36200LS
SEHD36250LS
SEHD36300LS
SEHD36350LS
SEHD36400LS
SEHD36200LIG
SEHD36250LIG
SEHD36300LIG
SEHD36350LIG
SEHD36400LIG
SEHD36200LSG
SEHD36250LSG
SEHD36300LSG
SEHD36350LSG
SEHD36400LSG
ARP050
ARP063
ARP075
ARP088
ARP100
800 A 600
800
SED36600LI
SED36800LI
SED36600LS
SED36800LS
SED36600LIG
SED36800LIG
SED36600LSG
SED36800LSG
SEHD36600LI
SEHD36800LI
SEHD36600LS
SEHD36800LS
SEHD36600LIG
SEHD36800LIG
SEHD36600LSG
SEHD36800LSG
ARP075
ARP100
1200 A 1000
1200
SED361000LI
SED361200LI
SED361000LS
SED361200LS
SED361000LIG
SED361200LIG
SED361000LSG
SED361200LSG










SEHD361000LI
SEHD361200LI
SEHD361000LS
SEHD361200LS
SEHD361000LIG
SEHD361200LIG
SEHD361000LSG
SEHD361200LSG
ARP083
ARP100
1600 A 1400
1600
SED361400LI
SED361600LI
SED361400LS
SED361600LS
SED361400LIG
SED361600LIG
SED361400LSG
SED361600LSG
SEHD361400LI
SEHD361600LI
SEHD361400LS
SEHD361600LS
SEHD361400LIG
SEHD361600LIG
SEHD361400LSG
SEHD361600LSG
ARP090
ARP100
2000 A 1800
2000
SED361800LI
SED362000LI
SED361800LS
SED362000LS
SED361800LIG
SED362000LIG
SED361800LSG
SED362000LSG
SEHD361800LI
SEHD362000LI
SEHD361800LS
SEHD362000LS
SEHD361800LIG
SEHD362000LIG
SEHD361800LSG
SEHD362000LSG
ARP090
ARP100
2500 A 2500 SED362500LI
SED362500LS
SED362500LIG
SED362500LSG
SEHD362500LI
SEHD362500LS
SEHD362500LIG
SEHD362500LSG ARP100
3000 A 3000 SED363000LI
SED363000LS
SED363000LIG
SED363000LSG
SEHD363000LI
SEHD363000LS
SEHD363000LIG
SEHD363000LSG ARP100
4000 A 3200
4000
SED363200LI
SED364000LI
SED363200LS
SED364000LS
SED363200LIG
SED364000LIG










SED363200LSG
SED364000LSG
SEHD363200LI
SEHD364000LI
SEHD363200LS
SEHD364000LS
SEHD363200LIG
SEHD364000LIG
SEHD363200LSG
SEHD364000LSG

SEF36200LI
SEF36250LI
SEF36300LI
SEF36350LI
SEF36400LI
SEF36200LS
SEF36250LS
SEF36300LS
SEF36350LS
SEF36400LS
SEF36200LIG
SEF36250LIG
SEF36300LIG
SEF36350LIG
SEF36400LIG
SEF36200LSGS
EF36250LSG
SEF36300LSG
SEF36350LSG
SEF36400LSG
SEHF36200LI
SEHF36250LI
SEHF36300LI
SEHF36350LI
SEHF36400LI
SEHF36200LS
SEHF36250LS
SEHF36300LS
SEHF36350LS
SEHF36400LS
SEHF36200LIG
SEHF36250LIG
SEHF36300LIG
SEHF36350LIG
SEHF36400LIG
SEHF36200LSG
SEHF36250LSG
SEHF36300LSG
SEHF36350LSG
SEHF36400LSG

SEF36600LI
SEF36800LI
SEF36600LS
SEF36800LS
SEF36600LIG
SEF36800LIG
SEF36600LSG
SEF36800LSG
SEHF36600LI
SEHF36800LI
SEHF36600LS
SEHF36800LS
SEHF36600LIG
SEHF36800LIG
SEHF36600LSG
SEHF36800LSG

SEF361000LI
SEF361200LI
SEF361000LS
SEF361200LS
SEF361000LIG










SEF361200LIG
SEF361000LSG
SEF361200LSG
SEHF361000LI
SEHF361200LI
SEHF361000LS
SEHF361200LS
SEHF361000LIG
SEHF361200LIG
SEHF361000LSG
SEHF361200LSG
ARP083
ARP100
1600 A 1400
1600
SEF361400LI
SEF361600LI
SEF361400LS
SEF361600LS
SEF361400LIG
SEF361600LIG
SEF361400LSG
SEF361600LSG
SEHF361400LI
SEHF361600LI
SEHF361400LS
SEHF361600LS
SEHF361400LIG
SEHF361600LIG
SEHF361400LSG
SEHF361600LSG

SEF361800LI
SEF362000LI
SEF361800LS
SEF362000LS
SEF361800LIG
SEF362000LIG
SEF361800LSG
SEF362000LSG
SEHF361800LI
SEHF362000LI
SEHF361800LS
SEHF362000LS
SEHF361800LIG
SEHF362000LIG
SEHF361800LSG
SEHF362000LSG
ARP090
ARP100
2500 A 2500 SEF362500LI
SEF362500LS
SEF362500LIG
SEF362500LSG
SEHF362500LI
SEHF362500LS
SEHF362500LIG
SEHF362500LSG ARP100
3000 A 3000 SEF363000LI
SEF363000LS
SEF363000LIG
SEF363000LSG
SEHF363000LI
SEHF363000LS
SEHF363000LIG
SEHF363000LSG ARP100
4000 A 3200
4000
SEF363200LI
SEF364000LI
SEF363200LS
SEF364000LS
SEF363200LIG
SEF364000LIG
SEF363200LSG










SEF364000LSG
SEHF363200LI
SEHF364000LI
SEHF363200LS
SEHF364000LS
SEHF363200LIG
SEHF364000LIG
SEHF363200LSG
SEHF364000LSG
ARP080
ARP100
24hr Emergency
Email: bcope@qualityswitchgear.net or call (800) 421-5082    
Quality Switchgear, Inc., 13273 South Interstate 35, Valley View, TX
76272
Local Phone: (940) 726- 3429  Fax number: (940) 726-3448
After Hours Emergency Service: (214) 460-2576
Email: bcope@qualityswitchgear.net or call (800) 421-5082    
Quality Switchgear, Inc., 13273 South Interstate 35, Valley View, TX
76272
Local Phone: (940) 726- 3429  Fax number: (940) 726-3448
After Hours Emergency Service: (214) 460-2576
SSTOCK #        MFG.        CATALOG #                FRAME SZ
8-2-07-8        SQ D        SED36400LSGA4                400
8-2-07-9        SQ D        SED36400LSGA4                400
1-21-08-27        SQ D        SED36600LSGES5E8        800
1-21-08-28        SQ D        SED36600LSGES5E8        800
3-13-08-7        SQ D        SESM08                                800
3-13-08-8        SQ D        SESM08                                800
3-13-08-9        SQ D        SESM08                                800
9-16-08-10        SQ D        SED361200LI                    1200
11-18-08-1        SQ D        SED361200LSG                1200
11-18-08-2        SQ D        SED361200LSG                1200
9-16-08-9        SQ D        SED361600LI                      1600
12-15-08-7        SQ D        SEF361600LSG                1600
3-13-08-10        SQ D        SESM16                            1600
3-13-08-5        SQ D        SESM16                              1600
3-13-08-6        SQ D        SESM16                              1600
4-23-08-7        SQ D        SED20 ?                              2000
9-16-08-11        SQ D        SED362000LI                   2000
4-23-08-6        SQ D        SEDG20                              2000
7-23-08-4        SQ D        SEDG20S1XA                    2000
7-23-08-5        SQ D        SEDG20S1XA                    2000
1-12-09-4        SQ D        SEF20VI54                        2000
7-31-08-3`        SQ D        SEF362500LS                   2500
8-5-07-7        SQ D        SEF362500LSET1A4           2500
8-2-07-4        SQ D        SED30M2                           3000
8-2-07-6        SQ D        SED30M2                            3000
7-2-07-2        SQ D        SED363000LIGES1A8        3000
9-26-05-1        SQ D        SED363000LS                   3000
3-5-08-1        SQ D        SED363000LSG                  3000
11-12-07-1        SQ D        SED363000LSGA8         3000
NEW                SQD        SEF363000LSG                 3000
3-22-07-2        SQ D        SEDG30E1C1S1M2         3000
8-2-07-5        SQ D        SEDG30M2                        3000
7-18-08-14        SQ D        SEFG30                          3000
9-13-06-8        SQ D        SEFG30E1C1S1N2          3000
4-7-04-4        SQ D        SED364000LSA8                4000
9-18-06-2        SQ D        SED364000LSES1A8        4000
6-1-06-2        SQ D        SED364000LSG                  4000
5-19-05-3        SQ D        SED364000LSGS3           4000
3-30-07-1        SQ D        SEF364000LSGES1          4000
4-28-08-5        SQ D        SEF364000LSGS1A8        4000
4-28-08-6        SQ D        SEF364000LSGS1A8        4000
4-8-08-35        SQ D        SEF364000LSGS1A8        4000
Square D SED and SEF
Inventory
SEHD36300LIG
SEHD36350LIG
SEHD36400LIG
SEHD36200LSG
SEHD36250LSG
SEHD36300LSG
SEHD36350LSG
SEHD36400LSG
SED361800LS
SED362000LS
SED361800LIG
SED362000LIG
SED361800LSG
SED362000LSG
SEHD361800LI
SEHD362000LI
SEHD361800LS
SEHD362000LS
SEHD361800LIG
SEHD362000LIG
SEHD361800LSG
SEHD362000LSG
ARP090
ARP100
2500 A 2500 SED362500LI SED362500LS SED362500LIG SED362500LSG SEHD362500LI SEHD362500LS SEHD362500LIG SEHD362500LSG
ARP100
3000 A 3000 SED363000LI SED363000LS SED363000LIG SED363000LSG SEHD363000LI SEHD363000LS SEHD363000LIG SEHD363000LSG
ARP100
4000 A 3200
4000
SED363200LI
SED364000LI
SED363200LS
SED364000LS
SED363200LIG
SED364000LIG
SED363200LSG
SED364000LSG
SEHD363200LI
SEHD364000LI
SEHD363200LS
SEHD364000LS
SEHD363200LIG
SEHD364000LIG
SEHD363200LSG
SEHD364000LSG
SEF36200LI
SEF36250LI
SEF36300LI
SEF36350LI
SEF36400LI
SEF36200LS
SEF36250LS
SEF36300LS
SEF36350LS
SEF36400LS
SEF36200LIG
SEF36250LIG
SEF36300LIG
SEF36350LIG
SEF36400LIG
SEF36200LSGS
EF36250LSG
SEF36300LSG
SEF36350LSG
SEF36400LSG
SEHF36200LI
SEHF36250LI
SEHF36300LI
SEHF36350LI
SEHF36400LI
SEHF36200LS
SEHF36250LS
SEHF36300LS
SEHF36350LS
SEHF36400LS
SEHF36200LIG
SEHF36250LIG
SEHF36300LIG
SEHF36350LIG
SEHF36400LIG
SEHF36200LSG
SEHF36250LSG
SEHF36300LSG
SEHF36350LSG
SEHF36400LSG
















SEF36600LI
SEF36800LI
SEF36600LS
SEF36800LS
SEF36600LIG
SEF36800LIG
SEF36600LSG
SEF36800LSG
SEHF36600LI
SEHF36800LI
SEHF36600LS
SEHF36800LS
SEHF36600LIG
SEHF36800LIG
SEHF36600LSG
SEHF36800LSG

SEF361000LI
SEF361200LI
SEF361000LS
SEF361200LS
SEF361000LIG
SEF361200LIG
SEF361000LSG
SEF361200LSG
SEHF361000LI
SEHF361200LI
SEHF361000LS
SEHF361200LS
SEHF361000LIG
SEHF361200LIG
SEHF361000LSG
SEHF361200LSG
ARP083
ARP100
1600 A 1400
1600
SEF361400LI
SEF361600LI
SEF361400LS
SEF361600LS
SEF361400LIG
SEF361600LIG
SEF361400LSG
SEF361600LSG
SEHF361400LI
SEHF361600LI
SEHF361400LS
SEHF361600LS
SEHF361400LIG
SEHF361600LIG
SEHF361400LSG
SEHF361600LSG

SEF361800LI
SEF362000LI
SEF361800LS
SEF362000LS
SEF361800LIG
SEF362000LIG
SEF361800LSG
SEF362000LSG
SEHF361800LI
SEHF362000LI
SEHF361800LS
SEHF362000LS
SEHF361800LIG
SEHF362000LIG
SEHF361800LSG
SEHF362000LSG
ARP090
ARP100












2500 A 2500 SEF362500LI SEF362500LS SEF362500LIG SEF362500LSG SEHF362500LI SEHF362500LS SEHF362500LIG SEHF362500LSG
ARP100
3000 A 3000 SEF363000LI SEF363000LS SEF363000LIG SEF363000LSG SEHF363000LI SEHF363000LS SEHF363000LIG SEHF363000LSG
ARP100
4000 A 3200
4000
SEF363200LI
SEF364000LI
SEF363200LS
SEF364000LS
SEF363200LIG
SEF364000LIG
SEF363200LSG










SEF364000LSG
SEHF363200LI
SEHF364000LI
SEHF363200LS
SEHF364000LS
SEHF363200LIG
SEHF364000LIG
SEHF363200LSG
SEHF364000LSG
ARP080
ARP100
ARP050
ARP063
ARP075
ARP088
ARP100
800 A 600
800
SED36600LI
SED36800LI
SED36600LS
SED36800LS
SED36600LIG
SED36800LIG
SED36600LSG
SED36800LSG
SEHD36600LI
SEHD36800LI
SEHD36600LS
SEHD36800LS
SEHD36600LIG
SEHD36800LIG
SEHD36600LSG
SEHD36800LSG
ARP075
ARP100
1200 A 1000
1200
SED361000LI
SED361200LI
SED361000LS
SED361200LS
SED361000LIG
SED361200LIG
SED361000LSG
SED361200LSG
SEHD361000LI
SEHD361200LI
SEHD361000LS
SEHD361200LS
SEHD361000LIG










SEHD361200LIG
SEHD361000LSG
SEHD361200LSG
ARP083
ARP100
1600 A 1400
1600
SED361400LI
SED361600LI
SED361400LS
SED361600LS
SED361400LIG
SED361600LIG
SED361400LSG
SED361600LSG
SEHD361400LI
SEHD361600LI
SEHD361400LS
SEHD361600LS
SEHD361400LIG
SEHD361600LIG
SEHD361400LSG
SEHD361600LSG
ARP090
ARP100
2000 A 1800
2000
SED361800LI
SED362000LI
Other Possible catalog numbers made by Square D are listed below. Quality
Switchgear can help match any of these model configurations if you are having
problems locating them. Our experience and knowledge of the SE product line will
get you back online in a hurry.
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