Standard delivery
£8 ex VAT · free over £200UK parcel delivery is £8 ex VAT, or free on orders over £200 ex VAT.
Heavier items may be charged at a weight-based or pallet rate, shown at checkout.
MERSEN FUSE A 130 URD 70 LI 0200 A130URD70LI0200
High-speed fuse designed for semiconductor protection with aR characteristic, rated at 200A, 1250VAC IEC, 1300VAC UL, featuring striker indication and slotted blade terminals.
£76.58
Why Choose the Mersen B300657 High-Speed Semiconductor Fuse?
The Mersen B300657 is a premium square body high-speed semiconductor fuse engineered to provide reliable protection for modern power electronic equipment. Part of the proven Mersen Protistor® Size 70 series, this fuse is specifically designed to protect sensitive semiconductor devices including IGBTs, thyristors, GTOs and power diodes from damaging short-circuit currents.
Featuring an ultra-fast aR operating characteristic, the B300657 rapidly interrupts fault currents while minimising the energy let through to protected components. Its solidified sand construction, pure silver fuse elements, silver-plated contact surfaces and integrated striker indicator provide dependable performance and extended service life in demanding industrial applications.
With a 200 A rated current and 1250 V AC IEC / 1300 V AC UL voltage ratings, the Mersen B300657 is ideally suited for industrial drives, power converters, UPS systems, renewable energy equipment and other semiconductor-based power conversion applications.
Key Advantages
- High-speed aR semiconductor protection fuse for industrial power electronics.
- 200 A current rating for demanding semiconductor applications.
- 1250 V AC IEC / 1300 V AC UL voltage capability.
- Ultra-fast operation reduces damaging fault energy.
- Integrated striker indicator for fuse status monitoring.
- Silver-plated contacts provide excellent conductivity and durability.
Key Features
- Mersen Protistor® Size 70 series.
- Catalogue Number: A130UD70LI200.
- 200 A rated current.
- 1250 V AC IEC / 1300 V AC UL rated voltage.
- aR ultra-fast operating characteristic.
- Square body Size 70 construction.
- Long slotted blade terminals.
- Integrated striker indicator for remote indication.
Reliable Protection for Power Electronics
High-speed semiconductor fuses are specifically designed to interrupt fault currents before they can damage expensive semiconductor devices. Their low let-through energy helps extend equipment life, improve system reliability and reduce maintenance costs across industrial power conversion systems.
The Mersen Protistor® Size 70 range provides dependable protection for converters, motor drives, UPS systems and renewable energy equipment. Its advanced construction delivers excellent short-circuit protection for today's high-performance semiconductor applications.
Typical Applications
- Variable frequency drives (VFDs).
- Industrial motor control systems.
- Power converters and rectifiers.
- UPS and backup power equipment.
- Renewable energy inverters.
- Industrial semiconductor protection.
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 | B300657 | |
| Catalogue No | A130UD70LI200 | |
| Description | Square Body High-Speed Fuse Protistor® Size 70 aR 1250VAC IEC 1300VAC UL 200A With Striker Slotted Blades long | |
| EAN/UPC Code | 3605340331769 | |
| Rated voltage AC UL | 1300 V | |
| Rated voltage AC IEC | 1250 V | |
| Ampere Rating | 200 A | |
| AC or DC | AC | |
| Speed/Characteristic | aR | |
| Fuse Size | 70 | |
| Mounting | Bolted | |
| Clearing I2t At Rated Voltage | 38000 A²s | |
| Melting I2t | 4730 A²s | |
| AC Max I.R./Breaking Capacity | I1: 200 kA | |
| Indication System | Yes | |
| Indication System Type | Striker | |
| Connection/Terminal Material | Silver-Plated Copper | |
| Connection/Terminal Type | Slotted Blades | |
| Product Width | 39.8 mm | |
| Product Length | 152.4 mm | |
| Product Height | 49.5 mm | |
| Sell Pack Quantity | 3 EA | |
| Sell Pack Weight | 1.1298 kg | |
| Sell Pack Width | 133 mm | |
| Sell Pack Length | 157 mm | |
| Sell Pack Height | 54 mm | |
| Product group | Semiconductor Protection Fuses | |
| Body/Insulating Material | Ceramic | |
| Product Weight | 0.3766 kg | |
| Power Dissipation at Rated Current Value | 56 W | |
| HS Code | 85351000 |
Frequently Asked Questions
What is the Mersen B300657 used for?
The B300657 protects semiconductor devices including IGBTs, thyristors, GTOs and power diodes from damaging short-circuit currents.
What is the current rating of this fuse?
This fuse has a 200 A rated current.
What voltage is the B300657 rated for?
It is rated for 1250 V AC (IEC) and 1300 V AC (UL).
What terminal style does this fuse use?
The B300657 features long slotted blade terminals together with an integrated striker indicator.
Where is this fuse typically installed?
It is commonly installed in industrial drives, converters, UPS systems, renewable energy equipment and other semiconductor-based power conversion applications.
Trusted by Power Electronics Engineers Worldwide
Mersen Protistor® semiconductor fuses are trusted worldwide for delivering dependable ultra-fast protection for valuable power electronic equipment operating in demanding industrial environments.
