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Mersen A130UD73LI315 / B300680 Protistor Size 73 aR High-Speed Fuse, 315A, 1250VAC (IEC), LI Slotted Blades
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$200.00 USD
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Mersen Protistor size 73 aR square-body high-speed fuse-link engineered for semiconductor protection in inverters, motor drives, UPS systems, and related power conversion equipment. This LI slotted blade variant provides ultra-fast, current-limiting performance with very low I²t to safeguard diodes, thyristors, and IGBTs. Contact surfaces are silver plated and hardware is non-magnetic; a low-voltage trip-indicator can be fitted to operate a field-mountable microswitch.
- aR Class per IEC 60269-4 and VDE 636-23
- Rated current 315 A
- Rated voltage 1250 VAC (IEC) / 1300 VAC (UL)
- Rated breaking capacity 126 kA AC
- Very low I²t: 12 kA²s pre-arcing; 95 kA²s clearing at rated voltage
- Power dissipation at In: 84 W
- LI slotted blade terminals; optional trip-indicator to drive microswitch
- Silver-plated contacts; non-magnetic hardware
- UL/CSA Recognized (E76491); CCC GB 13539.4; CE marking applicable ≤1000 VAC
- Package: 1; weight: 1.25 kg
| Catalog Number | A130UD73LI315 |
| Item Number | B300680 |
| Brand | Mersen |
| Product Series / Family | Protistor size 73 |
| Product Category | Square body high-speed fuse-link (Semiconductor Protection Fuse) |
| Speed / Characteristic | aR (ultra-fast acting) |
| Product Size | 73 |
| Rated Current (In) | 315 A |
| Rated Voltage AC (IEC) | 1250 V |
| Rated Voltage AC (UL) | 1300 V |
| Pre-arcing I²t | 12 kA²s |
| Clearing I²t at Rated Voltage | 95 kA²s |
| Rated Breaking Capacity AC | 126 kA |
| Power Dissipation at In | 84 W |
| Voltage Range AC (Family) | 600 ... 1250 VAC |
| Ampere Range (Family) | 315 ... 1800 A |
| Interrupting Rating AC (Family) | 100 ... 185 kA |
| Body Style | Square body |
| Terminal Type | LI slotted blades |
| Contact Surface Finish | Silver plated |
| Hardware | Non-magnetic |
| Key Dimensions (per drawing) | 98.8 ± 1.3 mm; 131 ± 1.3 mm; 78.5 mm; 73 ± 1 mm; 72 mm max; 40 mm; 34.6 mm; 15.9 mm; 6 mm; 32 mm |
| Drawing Reference | size 73 aR type LI (105924), dimensions in mm |
| Weight | 1.25 kg |
| Package Quantity | 1 |
| Trip-Indicator / Microswitch Compatibility | Low-voltage trip-indicator optional; can operate a field-mountable microswitch |
| Operating Temperature Range | [Not Found in Source] |
| Storage Temperature | [Not Found in Source] |
| Ingress Protection (IP) | [Not Found in Source] |
| IEC Compliance | IEC 60269-4 |
| VDE Standard | VDE 636-23 (aR class) |
| UL / CSA Recognition | UL/CSA Recognized E76491; UL certified status: ✓ |
| CCC (China) | GB 13539.4 (Asian market only) |
| CE Marking | Only for voltages ≤ 1000 VAC |
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