UL1077 Miniature Circuit Breakers
Uncompromising safety and comfort
A UL 1077 Miniature Circuit Breaker (MCB) functions as supplementary protection device used alongside a primary UL 489 branch circuit breaker. They offer additional overload protection for downstream equipment and sub circuits. ABB offers one of the most extensive ranges of UL 1077 MCBs.
Features
- Characteristics: B, C, D, K, Z
- Configurations: 1P, 1P+N, 2P, 3P, 3P+N, 4P
- Breaking capacities up to 25 kA
- Rated currents up to 63A
- Real contact position indication, directly connected to the moving contact
Benefits
- Extra-wide and complete range of MCBs to cover most applications and markets
- Compliance with worldwide product standards (IEC, UL, CSA)
- Space and time-saving thanks to the unique bottom-fixing auxiliary contact
- Established and certified quality
Product range
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|
Series |
Trip |
Interrupting |
Voltage |
Current |
|
ST200M |
B,C,D,K,Z |
10/5 kA |
480Y/277 V AC |
0.5 to 63A |
|
S200MUC |
C, K, Z |
up to 10 kA |
480Y/277 V AC |
0.2 to 63A |
|
S800S |
B,C,D,K |
up to 30 kA |
630Y/347 V AC |
0.5 to 63A |
|
S800C |
B,C,D,K |
up to 20 kA |
480Y/277 V AC |
10 to 63A |
|
S300P |
B, C, D, K, Z |
10 kA |
480Y/277 V AC |
0.2 to 63A |
|
ST200MTR |
K and Z |
ST200MTR: 6 kA |
480Y / 277 V AC |
0.5 to 63A |
|
S800P |
B,C,D,K |
up to 20 kA |
480Y/277 V AC |
80 to 100A |