High vs. Low Voltage Switchgear｜Key Differences & How to Choose for Your Industrial Plant

Choosing between HV and LV switchgear affects safety, reliability, and cost. This guide outlines technical differences and practical tips for industrial selection.
1. What is Switchgear?
Devices that manage electrical flow and safety. Includes circuit breakers, fuses, relays, busbars. Key for load control, protection, and maintenance isolation.
ーーーーーーーーーーーーーーーーーーーーーーーーーー
2. HV vs. LV Differences
- LV (≤1,000V): Compact, lower cost, suitable for small to medium plants
- HV (>1,000V): Handles higher load, costly but safer for large plants or 22kV direct input
ーーーーーーーーーーーーーーーーーーーーーーーーーー
3. How to Select
- Load <500kW → LV switchgear
- Load >1,000kW → HV preferred
- 22kV input → Needs HV + transformer
- Limited space → LV is better
- Require high fault handling → HV required
ーーーーーーーーーーーーーーーーーーーーーーーーーー
4. Why Hitachi Switchgear?
- Certified by IEC & JIS
- Designed for safety and longevity
- Compatible with SCADA / Remote Monitoring
- AIS & SF₆ insulation available
- Local support and spare parts in Thailand
📩 Download PDF or contact our team for consultation
#Switchgear #IndustrialElectricity #HighVoltage #LowVoltage #FactorySolutions #HitachiThailand #ElectricalSafety #SCADA