23/02/2026
Abb air circuit Breaker ACB
1000A 3Pole 4Pole
1250A 3Pole 4Pole
1600A 3Pole 4Pole
2000A 3Pole 4Pole
2500A 3Pole 4Pole
3200A 3Pole 4Pole
4000A 3Pole 4Pole
6300A 3Pole 4Pole
Available here Call WhatsApp Number 01911-317939
Email:[email protected]
Kaptanbazar Complex Dhaka Bangladesh
ABB Air Circuit Breakers (ACBs) are primarily represented by the SACE Emax 2 and Emax series. These are heavy-duty breakers designed for high-current industrial and commercial applications, typically starting where Molded Case Circuit Breakers (MCCBs) leave off.
Here is a breakdown of the amperage (current) ratings and key specifications for the current ABB lineup.
1. ABB SACE Emax 2 Series (Standard)
This is the modern flagship range. It is categorized by frame sizes (E1.2 to E6.2), with current ratings (I_u) ranging from 100A to 6300A.
Frame Size Rated Uninterrupted Current (I_u) Breaking Capacity (I_{cu} @ 415V)
E1.2 250A, 630A, 800A, 1000A, 1250A, 1600A up to 66 kA
E2.2 800A, 1000A, 1250A, 1600A, 2000A, 2500A up to 100 kA
E4.2 3200A, 4000A up to 150 kA
E6.2 4000A, 5000A, 6300A
2. Specialized ABB ACB Series
Emax 2/E (High Voltage): Designed for systems above 690V (up to 1150V or 1200V AC), common in wind and solar farms. Current ratings reach up to 6300A.
Emax 2 MS/DC-E: Specifically for DC applications up to 1500V DC, with ratings up to 4000A.
Formula AIR: A more "essential" line for simpler applications, typically covering 800A to 4000A in two frame sizes.
3. Key Technical Terms to Know
When looking at an ABB nameplate, you'll see these abbreviations:
I_n (Rated Current): The specific rating of the trip unit (e.g., an E2.2 frame might have an 800A trip unit installed).
I_u (Uninterrupted Current): The maximum current the breaker frame can carry indefinitely.
I_{cu} (Ultimate Breaking Capacity): The maximum fault current the breaker can interrupt.
I_{cw} (Short-time Withstand Current): The current the breaker can carry for a specific duration (usually 1 second) without damage.
Note: If you are replacing an older "New Emax" (E1, E2, E3, E4, E6) or "Legacy Emax" unit, ABB offers Retrofit Kits to slide a modern Emax 2 breaker into the old cradle.
abb acb" usually crops up in a few different contexts:
1. String Patterns & Logic
In formal language theory or simple pattern matching, you might be looking at the transition between two strings.
Commonality: Both start with a and end with b.
Difference: The middle character shifts from b to c.
2. Genetic Sequencing or Code
Sometimes these strings represent simplified versions of DNA sequences or placeholders in a coding algorithm (like a "Find and Replace" exercise).
3. Musical or Rhyme Schemes
If you're writing poetry or music, this looks like a variation of a rhyme scheme:
abb: A triplet where the last two lines rhyme.
