Square D 430 Series Surge Suppressor — 120/240V Split-Phase, 100 kA
The Square D 430 Series surge suppressor provides reliable transient voltage surge suppression for residential and light commercial split-phase electrical systems. Rated at 100 kA surge current capacity, this device protects the entire electrical panel and connected equipment from damaging voltage transients caused by lightning and utility switching events.
Key Features
- 100 kA surge current rating for robust protection
- Compatible with 120/240V split-phase systems
- Whole-panel protection safeguards all connected circuits simultaneously
- Split-phase design for single-phase residential and commercial systems
- Square D quality engineering for reliable long-term performance
Specifications
- Manufacturer: Square D (Schneider Electric)
- Series: 430 Series
- Model: 430120SP10ACSJ10
- Type: Surge Suppressor
- Voltage: 120/240V
- Surge Current: 100 kA
- System Type: Split-Phase
Applications
Suitable for installation at the main electrical panel in residential homes, small commercial buildings, and light industrial facilities with single-phase split-phase power systems. Provides protection for HVAC equipment, appliances, electronics, and sensitive electrical loads from transient overvoltages originating from lightning strikes and utility grid switching operations.


