- SP430 monitors 3 Phases only, SP431 monitors 3 Phases and Neutral
- 11-pin plug-in.
- Fail-to-safe design.
- Monitoring on three phase supply.
- Sensitive to: NPS Voltage, Reverse phase sequence, loss of phase, phase imbalance, phase asymmetry.
- Insensitive to regenerated EMF.
- High stability under harmonic distortion
- Insensitive to balanced supply variations - prevents nuisance tripping
- Fast response to reversed phase sequence
- Adjustable NPS sensitivity.
- Relay ON LED
- 10A SPDT or 5A DPDT relay output.
- SP430 Supersedes SP433.
- Requires optional S3-B 11-pin base.