ASCO 500 Series Surge Protection Device — Type 1, 400 kA
The ASCO 500 Series surge protection device delivers robust transient voltage surge suppression (TVSS) for 3-phase electrical systems. Rated at 400 kA surge current capacity and designed for Type 1 service entrance applications, this SPD provides the first line of defense against damaging transient overvoltages from lightning and utility switching events.
Key Features
- 400 kA surge current capacity per phase for high-energy transient protection
- Type 1 rating for service entrance / line-side installation
- Compatible with 208Y/120V wye 3-phase systems
- Operating frequency range: 47 to 63 Hz
- Lug connection for direct wire installation
- 3-phase protection for complete system coverage
Specifications
- Manufacturer: ASCO
- Series: 500 Series
- Model: 560120YP40ACDG10
- Type: Surge Protection Device (SPD)
- Surge Current Rating: 400 kA
- Voltage: 208Y/120V Wye
- Phases: 3-Phase
- Frequency: 47 to 63 Hz
- Installation Type: Type 1
- Connection: Lug
Applications
Designed for service entrance installation in commercial buildings, industrial facilities, data centers, and critical infrastructure. Type 1 SPDs are installed ahead of the main disconnect and provide protection against direct and indirect lightning strike transients as well as utility switching surges that travel through the power distribution system.



