S4 N 250 B W - 2 xxx
Isomax
Molded case circuit breakers
S3 – S8
Isomax
MCCBs
15
Accessories (added in alpha-numeric order)
A = Auxiliary Switch
BA = Bell Alarm
BA3 = Bell Alarm (S6/S7 only)
S_ = Shunt trip with voltage code
U_ = Undervoltage release with voltage code
Number of poles
-2 = 2 pole
-4 = 4 pole
None = 3 pole
Type connectors
W = None
Trip unit function
B = LI F = LSIG/K
C = LSI H = LSIG/D
D = Molded Case Switch (MCS) J = LSIG/DT
E = LSIG K = LSIG/DTK
T = Thermal-magnetic – 10X Mag M = Magnetic only (MCP)
G = Thermal-magnetic – 2.5 - 3X Mag 2
Current rating
015 = 15A
250 = 250A
400 = 400A
1200 = 1200A
1
15
Interrupting rating
class
B = Basic (240VAC)
N = Normal
H = High
L = Extra High
BQ = Basic, 100% rated
NQ = Normal, 100% rated
HQ = High, 100% rated
LQ = Extra High, 100% rated
D = Special molded case switch
(No trip IEC)
Frame size
S3 = 150 / 225A S6 = 600 / 800A
S4 = 250A S7 = 1200A
S5 = 400A
Low Voltage Products & Systems 15.65
ABB Inc. • 888-385-1221 • www.abb-control.com 1SXU 000 023 C0201
1 Consult ABB for factory installed accessories.
2 Consult ABB for availability.
Isomax
MCCBs
15
S3B
S3
150/225A
Standard thermal-magnetic
S3N S3H S3L
H x W x D
6.70" x 4.13" x 4.07"
Standard S3 package in cludes
complete cir cuit break er and mount ing
hard ware. Order cable lugs as a
separate item, standard copper/
aluminum (Cu/Al) lugs are no charge
when or dered with breaker.
General
The S3 breaker family ranges from 15 through 225 amperes. The S3 trip
mech a nisms are non-interchangeable and use sen si tive elec tro mag net ic relays
for overcurrent trip pro tec tion. Heat sensitive bimetals are used for ther mal
over cur rent protection. Short circuit cur rent protection begins at 10 times the
ther mal rating of the breaker and uses a magnetic coil principle.
Versions
To meet all application needs, the S3 is available in various versions:
T =Thermal-magnetic
Q =100% UL rated
D = Molded case switch
M = Magnetic only (MCP)
G = 3X Mag (100 - 225A 3-pole only)
Performance level
Each version is also available in different maximum fault in ter rupt ing levels
B = 240VAC
N = Normal
H = High
L = Extra high
Number of poles
In UL/CSA form, the S3 is avail able in two pole or three pole versions, both with
the same dimensions. A four pole ver sion is also available in UL/ IEC form. For
price estimate, add 35% to list price of selected version three pole breaker,
contact ABB Control for details.
15
Accessory mounting
Internal accessories are UL/CSA ap proved for both factory or fi eld installation.
Accessories require control ca ble con nec tors. Shunt trips or UVR's mount in the
left cavity. Auxiliary or bell alarm switches mount in the right cavity.
Reverse feeding
All versions of the S3 family are suitable for reverse feed applications.
Molded case switches
UL489 switches in clude no overcurrent pro tec tion except for a high in stan ta neous
trip mech a nism for self protection. IEC type molded case switches with no trip
pro tec tion are also available.
UL/CSA Interrupting capacity (kA RMS)
UL489 / CSA C22.2
Voltage N H L
240VAC 65 100 150
480VAC 25 50 85
600VAC 14 14 25
500VDC 35 50 65
600VDC 20 35 50
1
IEC-947 Interrupting capacity (kA RMS)
Voltage N H L
230VAC 65 100 170
380/400/415VAC 35 65 85
440VAC 30 50 65
500VAC 25 40 50
690VAC 14 18 20
500VDC 35 50 65
750VDC 20 35 50
1 15-30A are 65kA at 480VAC
15.66 Low Voltage Products & Systems
1SXU 000 023 C0201 ABB Inc. • 888-385-1221 • www.abb-control.com
Discount schedule S3