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MERSEN FUSE 10 URD 70 TT F 0500 10URD70TTF0500
High-speed aR characteristic fuse designed for semiconductor protection in industrial power electronic applications, rated 500A at 1000VAC (IEC) and 1100VAC (UL) with flush striker ends and metric threads.
£102.84
Why Choose the Mersen J301285 High-Speed Semiconductor Fuse?
The Mersen J301285 is an industrial high-speed semiconductor fuse designed to protect sensitive power electronic components against damaging short-circuit currents. Its rapid operating characteristics help interrupt severe electrical faults before excessive thermal and electrical energy can reach valuable semiconductor devices.
High-speed fuses are commonly used to protect components such as IGBTs, thyristors, rectifiers and power diodes. By restricting fault-current let-through energy, the J301285 can help reduce secondary equipment damage, improve operational reliability and minimise costly maintenance and production downtime.
The Mersen J301285 is intended for use in compatible industrial drives, converters, inverters, uninterruptible power supplies and specialist power control equipment. Its precise current rating, voltage rating, utilisation category, breaking capacity, dimensions and terminal configuration should be confirmed from the product marking or official Mersen documentation before installation.
Key Advantages
- Rapid short-circuit protection for power semiconductor devices.
- Current-limiting operation helps reduce damaging fault energy.
- Supports the protection of valuable electronic power components.
- Suitable for demanding industrial power conversion equipment.
- Helps minimise equipment damage, maintenance and downtime.
- Manufactured by established circuit protection specialist Mersen.
Key Features
- Mersen high-speed semiconductor fuse technology.
- Designed for rapid operation during short-circuit conditions.
- Suitable for protecting IGBTs, thyristors, rectifiers and power diodes.
- Current-limiting construction helps restrict fault let-through energy.
- Industrial-grade design for demanding electrical environments.
- Suitable for OEM equipment and maintenance replacement applications.
- Designed for installation in a correctly matched fuse mounting system.
- Manufacturer reference clearly identified as J301285.
Dependable Protection for Industrial Power Electronics
High-speed semiconductor fuses are engineered to operate more rapidly than conventional general-purpose fuses. During a short-circuit event, they limit the thermal and electrical energy transferred to vulnerable semiconductor components, helping prevent extensive damage to power modules and associated equipment.
Correct fuse selection is essential for safe and reliable protection. The current rating, voltage rating, utilisation category, breaking capacity, physical dimensions and terminal arrangement of the Mersen J301285 must match the requirements of the protected circuit and the original equipment manufacturer.
Typical Applications
- Variable speed and variable frequency drives.
- Industrial motor control systems.
- Power converters and rectifier assemblies.
- Industrial inverter systems.
- Uninterruptible power supplies.
- Battery energy storage equipment.
- Renewable energy power conversion systems.
- Industrial power supplies and automation equipment.
Technical Specifications
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| Fuse Indication | Striker | |
|---|---|---|
| Fuse Type | Semiconductor | |
| Fuse Class | aR | |
| Voltage | 1000 V | |
| Item number | J301285 | |
| Catalogue No | PC70UD10C500TF | |
| Description | Square Body High-Speed Fuse Protistor® Size 70 aR 1000VAC IEC 1100VAC UL 500A With Striker Flush ends metric threads | |
| EAN/UPC Code | 3605340339246 | |
| Rated voltage AC UL | 1100 V | |
| Rated voltage AC IEC | 1000 V | |
| Ampere Rating | 500 A | |
| RoHS Compliant | Yes | |
| AC or DC | AC | |
| Speed/Characteristic | aR | |
| Fuse Size | 70 | |
| Mounting | Bolted | |
| Clearing I2t At Rated Voltage | 483000 A²s | |
| Melting I2t | 84000 A²s | |
| AC Max I.R./Breaking Capacity | I1: 100 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 | 83 W | |
| HS Code | 85361090 |
Frequently Asked Questions
What is the Mersen J301285 used for?
The Mersen J301285 is intended to provide high-speed short-circuit protection for semiconductor devices installed in compatible industrial power electronic equipment.
Which components can the J301285 help protect?
It may be used in suitable circuits containing sensitive components such as IGBTs, thyristors, rectifiers and power diodes.
Why is a high-speed fuse required for semiconductor equipment?
A high-speed fuse interrupts severe fault currents rapidly and limits the energy reaching sensitive semiconductor components, helping reduce the risk of extensive equipment damage.
Where can the Mersen J301285 be installed?
It may be used in compatible industrial drives, converters, inverters, UPS systems, power supplies and other power conversion equipment.
Can the J301285 replace another semiconductor fuse?
It should only be used as a replacement when its current rating, voltage rating, utilisation category, breaking capacity, dimensions and terminal arrangement match the original equipment requirements.
Trusted by Industrial Engineers Worldwide
Mersen high-speed semiconductor fuses are used in industrial power electronic systems where rapid fault interruption, effective current limitation and dependable component protection are essential.
