Why Choose the Mersen W330161 6.9URD2.000BS88Z/400 Semiconductor Fuse?
The Mersen W330161, designated 6.9URD2.000BS88Z/400, is a high-speed Protistor® square body semiconductor fuse-link developed to protect high-power semiconductor devices in demanding industrial applications. Designed with an aR ultra-fast operating characteristic, it provides rapid short-circuit protection for IGBTs, thyristors, diodes and other sensitive power electronic components used in converters and motor drives.
With a 400 A current rating and a 690 V AC IEC voltage rating, the W330161 is engineered for industrial drives, renewable energy converters, UPS systems, rectifiers and other heavy-duty power conversion equipment. Its low let-through energy helps minimise thermal stress on valuable semiconductor devices during fault conditions.
The fuse features a BS88 Size 2 square body with bolted blade terminals and an integrated striker indicator for convenient local or remote fuse status monitoring when used with a compatible microswitch. Mersen's proven Protistor® construction delivers excellent current limitation together with a high interrupting capacity for dependable protection.
Key Advantages
- Ultra-fast aR semiconductor protection.
- 400 A current rating for high-power industrial equipment.
- 690 V AC IEC rated operation.
- High interrupting capacity for reliable fault clearance.
- Integrated striker indicator for maintenance and remote signalling.
- Low I²t performance helps protect sensitive semiconductor devices.
- Robust BS88 Size 2 square body construction.
Key Features
- Manufacturer: Mersen
- Series: Protistor® High-Speed Fuse
- Manufacturer SKU: W330161
- Catalogue designation: 6.9URD2.000BS88Z/400
- Product type: Square body semiconductor fuse-link
- Fuse class: aR
- Rated current: 400 A
- Rated voltage: 690 V AC IEC
- Integrated striker indicator.
- Bolted blade terminal arrangement.
- Designed for semiconductor short-circuit protection.
Designed for High-Power Semiconductor Protection
The Mersen W330161 is specifically engineered for the protection of modern semiconductor power devices operating in demanding industrial environments. Its ultra-fast aR characteristic limits fault energy before damage can occur to expensive power electronic components, helping maximise equipment availability and reduce maintenance costs.
As an aR semiconductor fuse, the W330161 is intended primarily for short-circuit protection. Appropriate overload protection should also be incorporated where required by the equipment manufacturer or relevant electrical standards.
Typical Applications
- Variable frequency drives (VFDs).
- Industrial motor drives.
- High-power rectifiers.
- Power converters.
- UPS systems.
- Renewable energy inverters.
- Industrial automation equipment.
- Semiconductor power protection circuits.
