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MERSEN FUSE 6,9 URB 000 D08 V 250 6,9URB000D08V250
High-speed fuse offering precise semiconductor protection with visual indicator, rated 250A, 690VAC, NH 000 size with DIN 80 blade terminals.
£41.32
Why Choose the Mersen B330028 High-Speed Semiconductor Fuse?
The Mersen B330028 is an industrial high-speed semiconductor fuse intended to protect sensitive power electronic equipment against damaging short-circuit currents. Its fast current-limiting operation helps reduce the electrical and thermal energy passed to semiconductor devices during a fault.
High-speed fuses are engineered to respond more rapidly than conventional general-purpose fuse links. This specialised performance makes the B330028 suitable for protecting components such as IGBTs, thyristors, diodes and rectifiers used in industrial drives, converters, inverters and controlled power supplies.
The B330028 manufacturer reference should be used when identifying or sourcing a replacement. As visually similar semiconductor fuses can have different current, voltage, operating-class and energy-limiting characteristics, all electrical and mechanical specifications must be verified against the original fuse or official Mersen documentation before installation.
Key Advantages
- High-speed protection for sensitive semiconductor devices.
- Rapid fault interruption helps limit damaging electrical energy.
- Current-limiting performance reduces thermal and mechanical stress.
- Suitable for demanding industrial power electronic equipment.
- Supports professional maintenance, repair and OEM applications.
- Genuine Mersen manufacturer reference B330028.
Key Features
- Mersen high-speed fuse technology.
- B330028 manufacturer part number.
- Designed for semiconductor short-circuit protection.
- Fast current-limiting operation.
- Industrial-grade fuse construction.
- Suitable for compatible fuse holders and electrical equipment.
- Helps reduce equipment damage and unplanned downtime.
- Electrical ratings and dimensions must be verified before use.
Reliable Protection for Industrial Power Electronics
Power semiconductor devices may suffer irreversible damage within milliseconds when exposed to excessive current. A correctly selected high-speed fuse limits both the peak fault current and its duration, helping protect connected electronic components and reducing the risk of extensive equipment damage.
Selection of the Mersen B330028 should be based on the complete manufacturer reference together with the circuit voltage, continuous operating current, prospective short-circuit current and energy-withstand characteristics of the protected equipment. Installation should only be completed after the circuit has been safely isolated.
Typical Applications
- Variable frequency drives and motor-control systems.
- Industrial inverters and power converters.
- Rectifier and thyristor assemblies.
- Uninterruptible power supply systems.
- Semiconductor protection circuits.
- Industrial automation and electrical control panels.
Technical Specifications
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| Fuse Indication | Visual indicator | |
|---|---|---|
| Voltage | 690 V | |
| Fuse Type | D / D0 (Neozed/Diazed), Semiconductor | |
| Fuse Size | NH000 | |
| Fuse Class | aR | |
| Item number | B330028 | |
| Catalogue No | DN000UB69V250V | |
| Description | Square Body High-Speed Fuse Protistor® Size NH 000 aR 690VAC IEC 250A Visual Indicator DIN 80 Blades | |
| EAN/UPC Code | 3605340360875 | |
| Rated voltage AC UL | 690 V | |
| Rated voltage DC UL | 320 V | |
| Rated voltage AC IEC | 690 V | |
| Ampere Rating | 250 A | |
| RoHS Compliant | Yes | |
| AC or DC | AC/DC | |
| Speed/Characteristic | aR | |
| Fuse Size | NH000 | |
| Mounting | Bolted | |
| Clearing I2t At Rated Voltage | 52000 A²s | |
| Melting I2t | 9860 A²s | |
| AC Max I.R./Breaking Capacity | I1: 200 kA | |
| Indication System | Yes | |
| Indication System Type | Visual Indicator | |
| Connection/Terminal Material | Silver-Plated Copper | |
| Connection/Terminal Type | DIN 80 Blades | |
| Product Width | 20 mm | |
| Product Length | 100 mm | |
| Product Height | 38.5 mm | |
| Sell Pack Quantity | 3 EA | |
| Sell Pack Weight | 0.3759 kg | |
| Sell Pack Width | 110 mm | |
| Sell Pack Length | 130 mm | |
| Sell Pack Height | 80 mm | |
| Product group | Semiconductor Protection Fuses | |
| Body/Insulating Material | Ceramic | |
| Product Weight | 0.1253 kg | |
| Power Dissipation at Rated Current Value | 45 W | |
| HS Code | 85361090 | |
| Country of Manufacture | Tunisia |
Frequently Asked Questions
What is the Mersen B330028 used for?
The Mersen B330028 is a high-speed fuse intended to protect compatible semiconductor devices and industrial power electronic equipment against damaging short-circuit currents.
Is B330028 the manufacturer part number?
Yes. B330028 is the Mersen manufacturer reference used to identify this particular fuse product.
Can a standard industrial fuse replace the B330028?
A general-purpose fuse should not be used as a direct replacement unless the equipment manufacturer confirms compatibility. High-speed semiconductor fuses have specialised fault-clearing and energy-limiting characteristics.
What should be checked before ordering this fuse?
Confirm the complete part number, rated current, rated voltage, operating class, breaking capacity, I²t values, physical dimensions and mounting arrangement against the original fuse and equipment documentation.
Who should install the Mersen B330028?
The fuse should be installed by a suitably qualified electrical professional after the equipment has been isolated and all applicable electrical safety procedures have been followed.
Trusted Semiconductor Protection Technology
Mersen high-speed fuses are used by equipment manufacturers, panel builders and electrical engineers to protect critical semiconductor components within industrial drives, converters and power-control systems.
