3000 Amps, Hitachi, service factor 6 SF6, Power Circuit Breaker/72.5 KV/72PM40-30SD, new

Hitachi SF₆ Power Circuit Breaker – 72.5kV, 3000A, 40kA (2025)

Available for sale is a NEW late-model Hitachi Energy SF₆ Power Circuit Breaker, built for high-voltage transmission and distribution applications. This unit is designed for reliability, high interrupting capacity, and modern substation requirements.

Key Specifications:

• Type: 72PM40-30SD
• Voltage Rating: 72.5 kV
• Continuous Current: 3000 A
• Short Circuit Current: 40 kA
• Interrupting Time: 3 cycles
• Frequency: 60 Hz
• Impulse Withstand: 350 kV
• Year of Manufacture: 2025

SF₆ Gas System:

• Gas Weight: 4650 lbs
• Gas per Breaker: 35 lbs
• Normal Operating Pressure: 58 psig
• Low Pressure Alarm: 51 psig
• Min Operating Pressure: 48 psig

Mechanical / Electrical Details:

• Operating Mechanism: FSA-1 (2024)
• Closing Voltage: 90–140 VDC
• Tripping Voltage: 70–140 VDC
• Motor / Aux Load: 120 VAC
• Robust design for utility-grade switching applications

Bushing Current Transformers:

• Multiple CT ratios available including:
  • 300/5, 400/5, 500/5, 800/5, 1100/5
  • Up to 2000/5 max ratio
• Accuracy Class: C800
• Manufacturer: MR
• Model: 942A924-01