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MERSEN FUSE A 070 URD 33 KI 0700 A070URD33KI0700
High-performance Protistor® fuse with 700A rating, rapid response, striker indication system, and slotted blades for secure installation. Tested to IEC and UL standards up to 700VAC.
£126.70
Why Choose the Mersen Z300241 Protistor® High-Speed Fuse?
The Mersen Z300241 is an industrial high-speed semiconductor fuse designed to protect sensitive power electronic equipment against damaging short-circuit currents. As part of Mersen’s established semiconductor protection portfolio, it is intended for applications where rapid fault interruption and effective current limitation are essential.
The Z300241 helps limit the thermal and mechanical energy transferred to semiconductor components during an electrical fault. Its high-speed operating performance supports the protection of IGBTs, thyristors, diodes, rectifiers and associated power electronic assemblies, helping reduce the risk of expensive component damage and unplanned equipment downtime.
Suitable for demanding industrial power systems, the Mersen Z300241 can be used within compatible fuse assemblies installed in motor drives, converters, inverters, uninterruptible power supplies and automation equipment. Exact electrical ratings, dimensions and terminal arrangements should be confirmed from the original product marking or current Mersen technical documentation before installation.
Key Advantages
- High-speed semiconductor protection for industrial power electronics.
- Rapid short-circuit interruption helps protect sensitive switching devices.
- Current-limiting performance reduces damaging let-through energy.
- Suitable for protecting IGBTs, thyristors, diodes and rectifier assemblies.
- Robust construction for demanding industrial operating environments.
- Helps improve equipment reliability and reduce maintenance downtime.
Key Features
- Mersen high-speed semiconductor fuse technology.
- Manufacturer reference: Z300241.
- Fast operating response during short-circuit conditions.
- High current-limiting capability.
- Designed for coordinated protection of power semiconductor devices.
- Suitable for industrial power conversion and automation equipment.
- Industrial-grade construction for dependable long-term service.
- Suitable for OEM, maintenance and replacement applications.
Reliable Protection for Power Electronics
High-speed semiconductor fuses operate more rapidly than conventional general-purpose fuses. This fast response limits the electrical energy reaching sensitive semiconductor components, where even a short-duration overcurrent can cause permanent damage to switching devices and associated circuitry.
Correct fuse selection is essential for maintaining coordinated protection within industrial power electronic systems. Matching the complete Mersen reference, current rating, voltage rating, operating characteristic and physical configuration helps preserve equipment safety, performance and reliability.
Typical Applications
- Variable frequency drives and industrial motor drives.
- Power converters and rectifier systems.
- Industrial inverters and switching equipment.
- Uninterruptible power supplies and backup power systems.
- Renewable energy power conversion equipment.
- Industrial automation and electrical control panels.
Technical Specifications
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| Fuse Indication | Striker | |
|---|---|---|
| Fuse Type | Semiconductor | |
| Fuse Class | aR | |
| Voltage | 690 V | |
| Item number | Z300241 | |
| Catalogue No | A070UD33KI700 | |
| Description | Square Body High-Speed Fuse Protistor® Size 33 aR 690VAC IEC 700VAC UL 700A With Striker Slotted Blades short | |
| EAN/UPC Code | 3605340325553 | |
| Rated voltage AC UL | 700 V | |
| Rated voltage AC IEC | 690 V | |
| Ampere Rating | 700 A | |
| RoHS Compliant | Yes | |
| AC or DC | AC | |
| Speed/Characteristic | aR | |
| Fuse Size | 33 | |
| Mounting | Bolted | |
| Clearing I2t At Rated Voltage | 330 kA²s | |
| Melting I2t | 57 kA²s | |
| AC Max I.R./Breaking Capacity | I1: 200 kA | |
| Design Details | Standard Terminal | |
| Indication System | Yes | |
| Indication System Type | Striker | |
| Connection/Terminal Material | Silver-Plated Copper | |
| Connection/Terminal Type | Slotted Blades | |
| Product Width | 73 mm | |
| Product Length | 134 mm | |
| Product Height | 78.5 mm | |
| Sell Pack Quantity | 3 EA | |
| Sell Pack Weight | 2.5353 kg | |
| Sell Pack Width | 145 mm | |
| Sell Pack Length | 245 mm | |
| Sell Pack Height | 90 mm | |
| Product group | Semiconductor Protection Fuses | |
| Body/Insulating Material | Ceramic | |
| Product Weight | 0.8451 kg | |
| Power Dissipation at Rated Current Value | 125 W | |
| HS Code | 85361090 |
Frequently Asked Questions
What is the Mersen Z300241 used for?
The Mersen Z300241 is a high-speed fuse intended to protect sensitive power semiconductor components against damaging short-circuit currents.
Which components can the Z300241 protect?
It is suitable for protecting power electronic components such as IGBTs, thyristors, diodes and rectifier assemblies.
Where is this fuse typically installed?
It may be installed in compatible fuse assemblies within industrial drives, converters, inverters, UPS equipment and other semiconductor-based power systems.
Can a general-purpose fuse replace the Mersen Z300241?
No. A replacement should match the complete Mersen reference, electrical ratings, operating characteristic, dimensions and terminal arrangement to maintain the intended protection performance.
How should the correct electrical ratings be confirmed?
The current rating, voltage rating, breaking capacity and connection format should be checked against the original fuse marking, equipment documentation or current Mersen technical data before installation.
Trusted for Industrial Power Protection
Mersen high-speed semiconductor fuses are widely specified by equipment manufacturers, panel builders and maintenance engineers for dependable protection of critical power electronic systems.
