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MERSEN FUSE A 070 URD 32 LI 0350 A070UD32LI350
High-speed Protistor® fuse with striker and slotted blades, rated 350A at 690VAC IEC and 700VAC UL for semiconductor protection.
£81.93
Why Choose the Mersen S302167 High-Speed Semiconductor Fuse?
The Mersen S302167 is a premium Protistor® square body high-speed semiconductor fuse engineered to provide exceptional protection for sensitive power electronic devices. Designed for demanding industrial applications, this ultra-fast aR class fuse safeguards diodes, thyristors, IGBTs and other semiconductor components against short-circuit faults while helping minimise damage and costly downtime.
As part of the trusted Mersen Protistor® Size 32 series, the S302167 delivers reliable high-speed protection for variable frequency drives, UPS systems, power converters, motor drives and industrial automation equipment. Its robust square body construction and silver-plated contacts ensure dependable electrical performance in demanding environments.
With a 350 A current rating, 690 V AC IEC / 700 V AC UL voltage rating and high interrupting capacity, the Mersen S302167 provides the fast fault clearing required to protect valuable semiconductor devices while maintaining system reliability.
Key Advantages
- Ultra-fast aR semiconductor protection fuse for sensitive power electronics.
- 350 A current rating for demanding industrial applications.
- 690 V AC IEC / 700 V AC UL voltage rating.
- High breaking capacity for enhanced equipment protection.
- Square body design with long slotted blade terminals for secure installation.
- Low let-through energy (I²t) helps minimise semiconductor damage.
- Suitable for OEM equipment, industrial drives and power conversion systems.
Key Features
- Mersen Protistor® Size 32 semiconductor fuse.
- Catalogue number: A070UD32LI350.
- 350 A rated current.
- 690 V AC IEC / 700 V AC UL operating voltage.
- aR ultra-fast operating characteristic.
- Square body construction with long slotted blade terminals.
- Integrated striker indicator for fuse status monitoring.
- Silver-plated contacts for reliable electrical performance.
- Designed for semiconductor and power electronics protection.
Reliable Protection for Power Electronics
High-speed semiconductor fuses are specifically engineered to clear fault currents before sensitive semiconductor devices can be damaged. The Mersen S302167 combines rapid fault interruption with low energy let-through, making it an ideal solution for protecting expensive power electronic equipment.
Its proven Protistor® technology is widely used across industrial automation, renewable energy, motor control and power conversion applications where dependable semiconductor protection is essential for maintaining uptime and equipment reliability.
Typical Applications
- Variable frequency drives (VFDs).
- Motor drives and soft starters.
- Power converters and inverters.
- UPS and backup power systems.
- Industrial automation equipment.
- Semiconductor power supplies.
- Renewable energy conversion systems.
- OEM electrical equipment.
Technical Specifications
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| Fuse Indication | Striker | |
|---|---|---|
| Fuse Type | Semiconductor | |
| Fuse Class | aR | |
| Voltage | 690 V | |
| Item number | S302167 | |
| Catalogue No | A070UD32LI350 | |
| Description | Square Body High-Speed Fuse Protistor® Size 32 aR 690VAC IEC 700VAC UL 350A With Striker Slotted Blades long | |
| EAN/UPC Code | 3605340351248 | |
| Rated voltage AC UL | 700 V | |
| Rated voltage AC IEC | 690 V | |
| Ampere Rating | 350 A | |
| RoHS Compliant | Yes | |
| AC or DC | AC | |
| Speed/Characteristic | aR | |
| Fuse Size | 32 | |
| Mounting | Bolted | |
| Clearing I2t At Rated Voltage | 53.7 kA²s | |
| Melting I2t | 8.9 kA²s | |
| 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 | 59 mm | |
| Product Length | 153 mm | |
| Product Height | 65 mm | |
| Sell Pack Quantity | 3 EA | |
| Sell Pack Weight | 1.7199 kg | |
| Sell Pack Width | 160 mm | |
| Sell Pack Length | 195 mm | |
| Sell Pack Height | 72 mm | |
| Product group | Semiconductor Protection Fuses | |
| Body/Insulating Material | Ceramic | |
| Product Weight | 0.5733 kg | |
| Power Dissipation at Rated Current Value | 74 W | |
| HS Code | 85361090 | |
| Country of Manufacture | France |
Frequently Asked Questions
What is the Mersen S302167 used for?
The S302167 is designed to protect sensitive semiconductor devices such as IGBTs, thyristors and diodes used in industrial power conversion and motor control equipment.
What is the current rating of this fuse?
This fuse has a 350 A current rating.
What voltage is the Mersen S302167 rated for?
It is rated for 690 V AC (IEC) and 700 V AC (UL).
What type of fuse is the S302167?
It is an aR ultra-fast square body semiconductor fuse designed specifically for short-circuit protection of power electronic components.
Where is this fuse commonly installed?
The fuse is commonly installed in industrial drives, power converters, UPS systems, renewable energy equipment and other semiconductor-based electrical systems.
Trusted Protection for Industrial Power Electronics
Mersen Protistor® semiconductor fuses are trusted worldwide by OEMs, panel builders and industrial engineers for delivering reliable high-speed protection for critical power electronic equipment.
