The SLB relay protects against breaker pole failure, i.e. pole disagreement. Pole failure is defined as having one or more breaker poles open, while one or more poles are closed, during non fault conditions. This relay is recommended for single-breaker applications. Where ring-bus or breaker-and-a half configurations are used, the SLB-1 relay is recommended.
Why ABB?
- Long product life
- Ease of application
- Reliable protection
- High-quality design