Mersen PSC Square Body Fuses: 690V - 1300V Technical Guide
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In power electronics, semiconductor devices are the "brains" of the system, yet they remain extremely sensitive to overvoltage and current surges. To prevent irreversible damage, Mersen PSC Square Body Fuses provide ultra-fast acting protection tailored for rectifiers, inverters, and UPS systems.
Product Overview
Mersen (formerly Ferraz Shawmut) PSC fuses are engineered for high-performance power conversion equipment. Utilizing die-cut elements embedded in solidified sand, these fuses control arcing characteristics to achieve exceptionally low I²t and high interrupting ratings. All contact surfaces are silver-plated to ensure long-term reliability in demanding industrial environments.
Typical Applications
- Protection of Rectifiers and Inverters
- Variable Speed DC Drives
- UPS (Uninterruptible Power Supply) Systems
- Reduced Voltage Motor Starters
- Traction and Transportation Power conversion
Key Features & Benefits
- Extremely Fast-Acting: Optimized for semiconductor protection.
- Versatile Mounting: Multiple styles including KI, LI, TTI, and DIN standard blades.
- Low Watts Loss: Minimizes heat generation within cabinets.
- Microswitch Compatible: All units feature a trip-indicator for remote signaling.
700V North American Style Selector (KI Mounting)
PSC Size 30/31/32/33 — KI Mounting
700VAC • 63A to 1600A • Ultra-Fast Power Protection
| Catalog Number | Voltage AC | Current (In) | Clearing I²t | Action |
|---|---|---|---|---|
| A070UD30KI63Item: B300128 | 700V | 63A | 1.2 | REQUEST QUOTE |
| A070UD30KI200Item: G300133 | 700V | 200A | 16.7 | REQUEST QUOTE |
| A070UD31KI500Item: Y300033 | 700V | 500A | 210 | REQUEST QUOTE |
| A070UD32KI800Item: F300201 | 700V | 800A | 648 | REQUEST QUOTE |
| A065UD33KI1600Item: E302063 | 650V | 1600A | 3250 | REQUEST QUOTE |
→ Continued: 1300V Series and European DIN Mounting Guides
1300V North American Style Selector (LI Mounting)
PSC Size 70/71/72/73 — LI Mounting
1300VAC • High Voltage Square Body Semiconductor Protection
| Catalog Number | Voltage AC | Current (In) | Watts Loss | Action |
|---|---|---|---|---|
| A130UD70LI63Item: W300652 | 1300V | 63A | 26W | REQUEST QUOTE |
| A130UD71LI315Item: H300663 | 1300V | 315A | 76W | REQUEST QUOTE |
| A130UD72LI800Item: A300679 | 1100V | 800A | 146W | REQUEST QUOTE |
| A065UD73LI1800Item: A301599 | 650V | 1800A | 255W | REQUEST QUOTE |
690V European/IEC Style Selector (DIN 80 Mounting)
PSC Size 30/31/32/33 — DIN 80 Mounting
690VAC • European Standard Blades • IEC 60269-4
| Catalog Number | Voltage (IEC) | Current (In) | Clearing I²t | Action |
|---|---|---|---|---|
| PC30UD69V50AItem: F301926 | 690V | 50A | 0.68 | REQUEST QUOTE |
| PC31UD69V400AItem: B300013 | 690V | 400A | 110 | REQUEST QUOTE |
| PC33UD60V1800AItem: E301971 | 600V | 1800A | 3250 | REQUEST QUOTE |
Protect your high-value semiconductor assets with Mersen PSC legendary reliability. Our technical team can help you cross-reference and verify Clearing I²t ratings for your specific application.
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