ZX25-12 Rotating Rectifier Diode Kit 6Pcs/Set (3 Positive + 3 Negative) 25A 1200V Bolt Type Diode For RSK2001 Stamford UCI Series

Cross Reference Part Numbers

Wide Application Range

1. 10~50kW Stamford UCI series brushless diesel/gas generator rotor excitation rectification system
2. Land standby, construction rental, silent small-medium brushless genset maintenance replacement
3. Generator no AC output, severe voltage fluctuation, AVR overheating burnout, rectifier open/short circuit fault repair
4. Generator factory OEM supporting, machinery repair shop, power rental company bulk spare parts procurement

Key Product Features

1. Standard 6Pcs Complete Matching Set (3 Positive + 3 Negative), No Polarity Matching Trouble
   Strictly divided into positive red wire and negative black wire, complete three-phase rectifier bridge configuration, one set fully meets single rotor assembly installation requirement, avoid missing or mismatched diodes during maintenance.
    
2. 25A Large Current + 1200V High Reverse Voltage, Strong Anti-Surge Impact Capacity
   High-grade power silicon chip can bear instantaneous overload surge when genset loads switch, effectively prevent diode soft breakdown and intermittent loss of voltage under long-term full-load operation.
    
3. Bolt Type Metal Packaging, Excellent Heat Dissipation & Rotor Vibration Resistance
   Metal bolt base directly contacts rectifier base plate for heat conduction, integrated anti-vibration structure adapts to long-time high-speed rotation of generator rotor, no open circuit or short circuit failure.
    
4. Universal M8 Thread Size, Compatible With RSK2001 Standard Rectifier Bracket
   Industry common M8 mounting thread, perfectly fit Stamford RSK2001 arc rectifier base plate, no need to re-drill or modify mounting hole during on-site replacement.
    
5. High Temperature Silicone Lead Wire, Adapt To High Oil & High Temperature Engine Room Environment
   Heat-resistant wire will not harden or crack under long-term high temperature, anti-oil corrosion, reduce hidden danger of wire breakage after long-term operation.
    
6. Strict Factory Full Electrical Inspection, Stable Reliable Performance
   Every single diode passes forward current, reverse voltage and high temperature aging test before packaging, effectively eliminate hidden faults such as generator voltage drift and accidental shutdown caused by unqualified diodes.
    

Common Equipment Failures Solved

• · Generator starts normally but no AC output voltage (single/multiple diodes open-circuit breakdown)
• · No-load voltage normal, voltage drops sharply and fluctuates violently under load (diode soft breakdown, leakage current increased)
• · Three-phase output voltage unbalanced, exciter rotor abnormal hot, AVR overheating frequent alarm burnout
• · Original rectifier diode short-circuit leads to AVR overload damage, repeated replacement of voltage regulator
• Old diode aging insulation poor, wire cracking, intermittent fuel supply and unstable generator frequency