Siemens SBA Air Circuit Breaker Series Circuit Breakers
The Siemens SBA series is a low-voltage air circuit breaker rated 800A–2000A at 600VAC with 100kA interrupting capacity. SBA breakers use electronic LSIG trip units for precise overcurrent protection in large industrial switchboards and main service entrance applications.
Series Specifications
| Frame | SBA Air Circuit Breaker — 2000A Frame |
|---|---|
| Amperage Range | 800A – 2000A |
| Voltage | 600VAC |
| Poles | 3-Pole |
| Interrupting Rating | 100kA @ 480V |
| Mounting | Fixed / Drawout |
| Trip Type | Electronic (LSIG) |
History and Replacement Context
The Siemens SBA series is part of the Sentron product family for large industrial and commercial power distribution. SBA breakers are used as main service entrance breakers and bus tie breakers in large industrial facilities.
Typical Applications
- Main service entrance
- Industrial switchboard mains
- Bus tie applications
- Large transformer feeders