FORMULA
Molded case circuit breakers
FORMULA
MCCBs
Introduction
ABB’s FORMULA molded case circuit breaker line offers simplicity and quality in some of
the smallest dimensions available. The A1 breaker frame size ranges in amperes from 15
through 100 and the A2 breaker frame size ranges from 125 through 250 amperes. All UL
FORMULA circuit breakers offer protection trip units that have xed thermal and magnetic
threshold values and are standard as a xed version with front terminals.
Standards
UL 489 & IEC 60947-2
Dimensions (W x D x H):
1 pole: 1.00 x 2.36 x 5.12
2 pole: 2.00 x 2.36 x 5.12
3 pole: 3.00 x 2.36 x 5.12
Weight:
1 pole: 0.54 lbs
2 pole: 1.04 lbs
3 pole: 1.54 lbs
Available accessories:
Shunt opening release (2p & 3p)
Undervoltage release (2p & 3p)
Auxiliary contacts (2p & 3p)
Termination kits (1p, 2p & 3p)
Padlocks (1p, 2p & 3p)
Direct and extended rotary handles (3p)
17
FORMULA
Low Voltage Products & Systems 17.1
ABB Inc. 1SXU000023C0202 Rev. A
Molded case circuit breakers
FORMULA
Circuit breakers for power distribution
MCCBs
A1 A2
Frame size A 100 250
Rated current, In A 15...100 125...250
Poles [Nr] Nr 1, 2, 3 1, 2, 3
Rated service voltage, Ue (AC) 50-60 Hz V 240 (1p, 2p, 3p) 240 (1p, 2p, 3p)
(DC) V 125 (1p), 250 (2p,3p) 125 (1p), 250 (2p,3p)
Versions Fixed Fixed
Performance Level A N A N
Poles Nr 1 2, 3 1 2, 3 1 2, 3 1 2, 3
Rated ultimate short circuit breaking capacity, Icu
Interrupting rating @ 240 V 50-60 Hz (AC) kA 10 10 18 25 10 10 14 25
Interrupting rating @ 125 V (DC) 1 pole (in 2012) kA 5 - 10 - 5 - 10 -
Interrupting rating @ 250 V (DC) 2 poles in series (2p, 3p) (in 2012)
Reference Standard UL 489 UL 489
Isolation behavior Yes Yes
Fixing onto DIN rail DIN EN 50022 DIN EN 50022
Dimensions (Width x Depth x Height)
1 pole in 1.00 x 2.36 x 5.12 1.38 x 2.36 x 5.91
2 poles in 2.00 x 2.36 x 5.12 2.76 x 2.36 x 5.91
3 poles in 3.00 x 2.36 x 5.12 4.13 x 2.36 x 5.91
Weight
1 pole lbs 0.54 0.82
2 poles lbs 1.04 1.61
3 poles lbs 1.54 2.43
Trip Unit - Thermomagnetic TMF Ye s Ye s
Technical data
kA - 5 - 10 - 10 - 25
17
17.2 Low Voltage Products & Systems
1SXU000023C0202 Rev. A ABB Inc.
FORMULA
Circuit breakers for power distribution
MCCBs
Catalog number explanation
A W
Number of Poles
-1= 1 pole (UL&IEC)
-2= 2 pole (UL&IEC)
None= 3 pole (UL&IEC)
-4= 4 pole (IEC)
Type Connectors
W=none
Trip Unit Function
T=thermalmagnetic (UL&IEC)
A=ELT - LI (IEC)
Current Rating
020=20A (UL&IEC); 025=25A (UL&IEC)
030=30A (UL&IEC); 032=32A (IEC)
040=40A (UL&IEC); 050=50A (UL&IEC)
060=60A (UL&IEC); 063=63A (IEC)
070=70A (UL&IEC); 080=80A (UL&IEC)
090=90A (UL&IEC); 100=100A (UL&IEC)
125=125A (UL&IEC); 150=150A (UL&IEC)
160=160A (UL&IEC); 175=175A (UL&IEC)
200=200A (UL&IEC); 225=225A (UL&IEC)
250=250A (UL&IEC); 320=320A (IEC)
400=400A (IEC); 500=500A (IEC); 630=630A (IEC)
Interrupting Rating Class
A=adequate(UL&IEC); B=basic(IEC); C=common(IEC)
N=normal(UL&IEC); S=standard(IEC)
Frame Size:
1=100A, UL; 2=250A, UL
A=125A, IEC; B=250A, IEC; C=400A, IEC; D=630A, IEC
015=15A (UL&IEC); 016=16A (IEC)
Low Voltage Products & Systems 17.3
ABB Inc. 1SXU000023C0202 Rev. A
17
FORMULA
A1
MCCBs
1 Pole 2 Pole 3 Pole
100A
A1 - 100A Frame TMF, thermal magnetic fixed - fixed mount (F), front terminals (F)
Breaker
A1A 10kA
A1N
240VAC
1 pole
18kA
2-3 pole
25kA
IC at
Rating
(A)
15 400 A1A015TW-1 A1A015TW-2 A1A015TW
20 400 A1A020TW-1 A1A020TW-2 A1A020TW
25 400 A1A025TW-1 A1A025TW-2 A1A025TW
30 400 A1A030TW-1 A1A030TW-2 A1A030TW
40 400 A1A040TW-1 A1A040TW-2 A1A040TW
50 500 A1A050TW-1 A1A050TW-2 A1A050TW
60 600 A1A060TW-1 A1A060TW-2 A1A060TW
70 700 A1A070TW-1 A1A070TW-2 A1A070TW
80 800 A1A080TW-1 A1A080TW-2 A1A080TW
90 900 A1A090TW-1 A1A090TW-2 A1A090TW
100 1000 A1A100TW-1 A1A100TW-2 A1A100TW
15 400 A1N015TW-1 A1N015TW-2 A1A015TW
20 400 A1N020TW-1 A1N020TW-2 A1A020TW
25 400 A1N025TW-1 A1N025TW-2 A1A025TW
30 400 A1N030TW-1 A1N030TW-2 A1A030TW
40 400 A1N040TW-1 A1N040TW-2 A1A040TW
50 500 A1N050TW-1 A1N050TW-2 A1A050TW
60 600 A1N060TW-1 A1N060TW-2 A1A060TW
70 700 A1N070TW-1 A1N070TW-2 A1A070TW
80 800 A1N080TW-1 A1N080TW-2 A1A080TW
90 900 A1N090TW-1 A1N090TW-2 A1A090TW
100 1000 A1N100TW-1 A1N100TW-2 A1A100TW
Magnetic trip
1 pole
catalog number
2 pole
catalog number
3 pole
catalog number
17
17.4 Low Voltage Products & Systems
1SXU000023C0202 Rev. A ABB Inc.
A2
250A, 600Y/347V, 480V ∆
Thermal-magnetic
1 Pole 2 Pole 3 Pole
FORMULA
MCCBs
A2 - 250A Frame TMF, thermal magnetic fixed - fixed mount (F), front terminals (F)
Breaker
A2A 10kA
A1N
240VAC
1 pole
18kA
2-3 pole
25kA
IC at
Rating
(A)
125 1250 A2A125TW-1 A2A125TW-2 A2A125TW
150 1500 A2A150TW-1 A2A150TW-2 A2A150TW
175 1750 A2A175TW-1 A2A175TW-2 A2A175TW
200 2000 A2A200TW-1 A2A200TW-2 A2A200TW
225 2250 A2A225TW-1 A2A225TW-2 A2A225TW
250 2500 A2A250TW-1 A2A250TW-2 A2A250TW
125 1250 A2N125TW-1 A2N125TW-2 A2N125TW
150 1500 A2N150TW-1 A2N150TW-2 A2N150TW
175 1750 A2N175TW-1 A2N175TW-2 A2N175TW
200
225 2250 A2N225TW-1 A2N225TW-2 A2N225TW
250 2500 A2N250TW-1 A2N250TW-2 A2N250TW
Magnetic trip
2000
1 pole
catalog number
A2N200TW-1 A2N200TW-2 A2N200TW
2 pole
catalog number
3 pole
catalog number
17
Low Voltage Products & Systems 17.5
ABB Inc. 1SXU000023C0202 Rev. A
FORMULA
MCCBs
Cabled service release
SOR-C and UVR-C
Accessories
Electrical
A1 - A2
Shunt opening release (SOR)
Frame size Voltage Catalog number
12VDC KA2S9
24-30VAC/DC KA2S8
A1 - A2
The shunt opening release allows for opening of the circuit breaker by means of a non-permanent electrical control.
Operation of the release is guaranteed for a voltage between 70% and 110% of the power supply rated voltage value.
Undervoltage release (UVR)
Frame size Voltage Catalog number
A1 - A2
The undervoltage release ensures opening of the circuit breaker for lack/lowering of the release power supply voltage.
Operation of the release is guaranteed for a voltage between 70% and 35% of the power supply rated voltage value.
After tripping, the circuit breaker can be closed again starting from a voltage higher than 85% of the power supply rated voltage
value.
48-60VAC/DC KA2S7
110-127VAC KA2S4
220-240VAC KA2S2
24-30VAC/DC KA2U8
48VAC/DC KA2U7
60VAC/DC KA2U5
110-127VAC KA2U4
220-240VAC KA2U2
17
Auxiliary contacts (AUX) & early auxiliary contacts (AUE)
Frame size Description
AUX-C 1Q+1SY 250 VAC/DC KA2AS-2 KA2AS
AUX-C 2Q+1SY 250 VAC/DC KA2AS2-2 KA2AS2
A1 - A2
The auxiliary contacts allow information about the state of the circuit breaker to be available through an electronic signal to another
apparatus. The early auxiliary contacts are normally open contacts which allow the undervoltage release to be supplied in advance
prior to the closing of the main contacts in direct and extended rotary handle operating mechanisms.
AUX-C 1Q+1SY 24 VDC KA2ASAU-2 KA2ASAU
AUX-C 2Q+1SY 24 VDC KA2AS2AU-2 KA2AS2AU
AUX-C 250V 1 CONT. SPARE PART* KA2ASSP KA2ASSP
AUE 2 CONTACTS x RHx – KA2RH-EM
2 Pole
Catalog number
3 Pole
Catalog number
1 Electrical/mechanical accessories cannot be installed on single pole breakers.
2 Rated 480Y/277 VAC for 15A.
3 When protected by a OCPD with appropriate ratings.
17.6 Low Voltage Products & Systems
1SXU000023C0202 Rev. A ABB Inc.
Accessories
Mechanical
A1 - A2
Terminal FCCuAl Terminal FCCuAl with cable
Front terminals for copper aluminum cables - FCCuAL
Frame size Description
A1
A2
* 250A Cu cables and 225A Al cables
KIT FC CuAl A1 80A KA1080-1 KA1080-2 KA1080-3 KA1080-4 KA1080-6
KIT FC CuAl A1 100A KA1100-1 KA1100-2 KA1100-3 KA1100-4 KA1100-6
KIT FC CuAl A2 225A* KA2225-1 KA2225-2 KA2225-3 KA2225-4 KA2225-6
KIT FC CuAl A2 250A KA2250-1 KA2250-2 KA2250-3 KA2250-4 KA2250-6
1 piece
catalog number
2 piece
catalog
number
3 piece
catalog
number
4 piece
catalog
number
FORMULA
MCCBs
6 piece
catalog
number
Terminal F Terminal F with cable lug Terminal F with busbar
Front terminals - F
Frame size Description 1 piece catalog number 2 piece catalog number 3 piece catalog number 4 piece catalog number 6 piece catalog number
A1 KIT F A1 KA1F-1 KA1F-2 KA1F-3 KA1F-4 KA1F-6
A2 KIT F A2 KA2F-1 KA2F-2 KA2F-3 KA2F-4 KA2F-6
Front terminals are supplied as standard with all FORMULA circuit breakers.
Terminal EF Terminal EF with busbar
Front extended terminals - EF (IEC only)
Frame size Description
A1 KIT EF A1 KA1EF-1 KA1EF-2 KA1EF-3 KA1EF-4 KA1EF-6
A2 KIT EF A2 KA2EF-1 KA2EF-2 KA2EF-3 KA2EF-4 KA2EF-6
1 piece
catalog number
2 piece
catalog
number
3 piece
catalog
number
4 piece
catalog
number
6 piece
catalog
number
17
Low Voltage Products & Systems 17.7
ABB Inc. 1SXU000023C0202 Rev. A
FORMULA
MCCBs
Mechanical
A1 - A2
Terminal ES Terminal ES with cable lug Terminal ES with busbar
Accessories
Front extended spread terminals - ES (IEC only)
Frame size Description
A1 KIT ES A1 – KA1ES-2 KA1ES-3 KA1ES-4 KA1ES-6
A2 KIT ES A2 – KA2ES-2 KA2ES-3 KA2ES-4 KA2ES-6
1 piece
catalog number
Terminal covers - low profile (LTC) and high profile (HTC)
2 piece
catalog
number
3 piece
catalog
number
4 piece
catalog
number
6 piece
catalog
number
17
High terminal cover (HTC)
Low terminal cover (LTC)
Phase barriers
Frame size Description
A1
A2
A1 - A2
* IEC rated only
Sealable screws for terminal covers* KA2SSW-T
LTC 3p - 2pcs KA1LTC-3
HTC 3p - 2pcs KA1HTC-3
LTC 3p - 2pcs
HTC 3p - 2pcs KA2HTC-3
Sealable screws for front* KA2SSW-F
Phase barriers - low profile and high profile
Frame size Description
A1 PB 50mm KA1PBL-2 KA1PBL-3
A2 PB 80mm
A1 - A2 PB 100mm KA2PBH-2 KA2PBH-3
2-Piece
catalog
number
KA2PBL-2 KA2PBL-3
Catalog
number
KA2LTC-3
4-Piece
catalog
number
Direct mount rotary handle (RHD)
Frame size Description
A1 - A2
RHD A1-A2 STANDARD DIRECT KA2RHD
RHD A1-A2 EMERGENCY DIRECT KA2RHDEM
Direct handle (RHD)
17.8 Low Voltage Products & Systems
1SXU000023C0202 Rev. A ABB Inc.
Catalog
number
Accessories
Mechanical
A1 - A2
Extended mount rotary handle (RHE)
FORMULA
MCCBs
Extended handle (RHE)
Fixed padlock in open position
(PLL)
Fixed padlock in open and
closed position (PLL)
Frame size Description
RHE KIT A1-A2 STANDARD EXTENDED KA2RHE
RHE KIT A1-A2 EMERGENCY EXTENDED KA2RHEEM
A1 - A2
RHE A1-A2 BASE
RHE A1-A2 SHAFT KA2RHE-S
RHE A1-A2 STANDARD HANDLE KA2RHE-H
RHE A1-A2 EMERGENCY HANDLE KA2RHE-HEM
Padlocks for lever operating mechanism (PLL)
Frame size Description
PLL - removable in open position (1p, 2p, 3p) KA2LDOR
A1 - A2
PLL - xed in open and closed position (3p)
PLL - xed in open position (3p) KA2LDOR
Catalog
number
KA2RHE-B
Catalog
number
KA2LD
Removable padlock in open
position (PLL)
Key lock on handle and front lever operating mechanism (RHL) (IEC only)
Catalog
number
KA2RHLO-B
KA2RHL
Key lock for direct handle
Frame size Description
RHL-D open position, different keys KA2RHLO
RHL-S open position, type A key KA2RHLO-A
A1 - A2
RHL-S open position, type B key
RHL-S open position, type C key KA2RHLO-C
RHL-S open position, type D key KA2RHLO-D
RHL-D open and closed position, different keys
Bracket for fixing on DIN rail (IEC only)
Frame size Description
A1 - A2 Bracket for 1p, 2p, 3p KA2DIN
Bracket for DIN rail
Low Voltage Products & Systems 17.9
ABB Inc. 1SXU000023C0202 Rev. A
Catalog
number
17
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