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MERSEN FUSE 12,5 URD 70 TT F 0125 Q300486
High-speed aR fuse designed for semiconductor protection with ratings of 125A, 1250VAC IEC, and 1300VAC UL. Features striker indication and flush ends with metric threads for bolted mounting.
£65.00
Why Choose the Mersen Q300486 Protistor® High-Speed Fuse?
The Mersen Q300486 is a genuine Protistor® Size 70 square body high-speed semiconductor fuse designed to provide outstanding protection for modern power electronic equipment. Identified by the catalogue number PC70UD13C125TF, this ultra-fast aR characteristic fuse-link is engineered specifically to protect IGBTs, thyristors, diodes and other semiconductor devices against damaging short-circuit currents.
Part of the trusted Mersen Protistor® Size 70 range, the Q300486 combines rapid fault clearing, low let-through energy and high interrupting capacity to maximise equipment reliability whilst reducing costly downtime. The fuse features flush-end metric threaded terminals, an integrated striker indicator and silver-plated contact surfaces for dependable long-term operation.
With a 125 A current rating, 1250 V AC IEC and 1300 V AC UL voltage ratings, the Mersen Q300486 is ideally suited to protecting industrial drives, renewable energy converters, UPS systems, rectifiers, inverters and other demanding power conversion equipment.
Key Advantages
- Genuine Mersen Protistor® semiconductor protection fuse.
- 125 A current rating.
- 1250 V AC IEC / 1300 V AC UL voltage rating.
- Ultra-fast aR operating characteristic.
- Flush-end metric threaded terminals.
- Integrated striker indicator.
- High interrupting capacity for critical semiconductor protection.
Key Features
- Manufacturer: Mersen.
- Series: Protistor® Size 70.
- Manufacturer part number: Q300486.
- Catalogue number: PC70UD13C125TF.
- Current rating: 125 A.
- Voltage rating: 1250 V AC IEC / 1300 V AC UL.
- Fuse characteristic: aR ultra-fast.
- Terminal type: Flush-end metric threaded terminals.
- Indicator: Integrated striker.
Advanced Semiconductor Protection
The Protistor® Size 70 range has been developed specifically to provide state-of-the-art protection for high-value semiconductor devices. Pure silver fuse elements embedded in solidified sand deliver extremely low let-through energy and excellent arc control, helping minimise damage during short-circuit faults.
These fuses are widely used wherever high-power semiconductor devices require dependable protection, including renewable energy installations, industrial drives, UPS systems, converters and power supplies.
Typical Applications
- Variable frequency drives (VFDs).
- Industrial motor drives.
- Renewable energy inverters.
- UPS systems.
- Power converters and rectifiers.
- High-power semiconductor equipment.
- Industrial automation systems.
Technical Specifications
Tick the specs you need, then view products that match.
| Fuse Indication | Striker | |
|---|---|---|
| Fuse Type | Semiconductor | |
| Fuse Class | aR | |
| Voltage | 1250 V | |
| Item number | Q300486 | |
| Catalogue No | PC70UD13C125TF | |
| Description | Square Body High-Speed Fuse Protistor® Size 70 aR 1250VAC IEC 1300VAC UL 125A With Striker Flush ends metric threads | |
| EAN/UPC Code | 3605340329155 | |
| Rated voltage AC UL | 1300 V | |
| Rated voltage AC IEC | 1250 V | |
| Ampere Rating | 125 A | |
| AC or DC | AC | |
| Speed/Characteristic | aR | |
| Fuse Size | 70 | |
| Mounting | Bolted | |
| Clearing I2t At Rated Voltage | 10500 A²s | |
| Melting I2t | 1310 A²s | |
| AC Max I.R./Breaking Capacity | I1: 126 kA | |
| Indication System | Yes | |
| Indication System Type | Striker | |
| Connection/Terminal Material | Silver-Plated Brass | |
| Connection/Terminal Type | Flush ends | |
| Product Width | 39.8 mm | |
| Product Length | 74 mm | |
| Product Height | 49.5 mm | |
| Sell Pack Quantity | 3 EA | |
| Sell Pack Weight | 1.017 kg | |
| Sell Pack Width | 85 mm | |
| Sell Pack Length | 133 mm | |
| Sell Pack Height | 55 mm | |
| Product group | Semiconductor Protection Fuses | |
| Body/Insulating Material | Ceramic | |
| Product Weight | 0.339 kg | |
| Power Dissipation at Rated Current Value | 38 W | |
| HS Code | 85351000 |
Frequently Asked Questions
What is the Mersen Q300486 used for?
The Mersen Q300486 is a high-speed semiconductor fuse designed to protect IGBTs, thyristors, diodes and other power semiconductor devices against short-circuit faults.
What is the current rating of the Q300486?
The Mersen Q300486 has a rated current of 125 A.
What voltage is the Q300486 rated for?
The fuse is rated for 1250 V AC (IEC) and 1300 V AC (UL).
What type of terminals does this fuse use?
The Q300486 features flush-end metric threaded terminals together with an integrated striker indicator.
Which applications is this fuse suitable for?
It is ideal for industrial drives, renewable energy systems, UPS equipment, converters, rectifiers and other high-power semiconductor applications.
Trusted Semiconductor Protection Worldwide
Mersen Protistor® semiconductor fuses are trusted worldwide by OEMs, machine builders and industrial engineers to protect critical power electronic equipment operating in demanding environments.
