High-speed aR characteristic fuse with 315A rating, suitable for semiconductor protection in industrial applications, certified to IEC and UL standards.
£141.65
The Mersen P302164 is a genuine Protistor® square body high-speed semiconductor fuse engineered to provide exceptional protection for power electronic devices operating in demanding industrial environments. Identified by the catalogue number A070UD32KI315, this ultra-fast aR characteristic fuse is specifically designed to protect semiconductors including IGBTs, thyristors and diodes from damaging short-circuit currents.
As part of the renowned Mersen Protistor® size 32 series, the P302164 combines outstanding fault-clearing performance with high breaking capacity, helping maximise equipment reliability while reducing costly downtime. Its robust ceramic body, silver-plated contacts and integrated striker indicator make it ideal for modern power conversion and industrial automation applications.
With a 315 A current rating, 690 V AC IEC and 700 V AC UL voltage rating, the Mersen P302164 delivers dependable semiconductor protection for variable speed drives, UPS systems, converters, motor drives and industrial power supplies.
High-speed semiconductor fuses are specifically designed to protect sensitive power electronic components from destructive fault currents before permanent damage can occur. Their exceptionally low let-through energy helps extend equipment life and reduce maintenance costs in demanding industrial installations.
The Mersen Protistor® range is trusted worldwide for protecting variable frequency drives, power converters, UPS systems, soft starters, rectifiers and renewable energy equipment where fast and dependable circuit protection is essential.
| Item number | P302164 |
|---|---|
| Catalogue No | A070UD32KI315 |
| Description | Square Body High-Speed Fuse Protistor® Size 32 aR 690VAC IEC 700VAC UL 315A With Striker Slotted Blades short |
| EAN/UPC Code | 3605340351217 |
| Rated voltage AC UL | 700 V |
| Rated voltage AC IEC | 690 V |
| Ampere Rating | 315 A |
| RoHS Compliant | Yes |
| AC or DC | AC |
| Speed/Characteristic | aR |
| Fuse Size | 32 |
| Mounting | Bolted |
| Clearing I2t At Rated Voltage | 31.8 kA²s |
| Melting I2t | 5.2 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 | 134 mm |
| Product Height | 65 mm |
| Sell Pack Quantity | 3 EA |
| Sell Pack Weight | 1.6569 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 | 0.5523 kg |
| Power Dissipation at Rated Current Value | 71 W |
| HS Code | 85361090 |
| Country of Manufacture | France |
The Mersen P302164 protects semiconductor devices such as IGBTs, thyristors and diodes from high fault currents in industrial power conversion equipment.
The fuse has a 315 A rated current.
The P302164 is rated for 690 V AC (IEC) and 700 V AC (UL).
The aR operating characteristic provides ultra-fast protection specifically for semiconductor devices against short-circuit faults.
Yes. The P302164 incorporates an integrated striker indicator to simplify fuse monitoring and maintenance.
Mersen Protistor® semiconductor fuses are widely specified by OEMs, panel builders and industrial engineers to provide dependable protection for modern power electronic equipment and critical industrial applications.
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LED Controls is a specialist distributor of factory automation and industrial controls, supplying OEMs, machine builders, panel builders and end users throughout the UK and worldwide. As a trusted UK distributor for many of the world’s leading automation manufacturers, we provide industrial control products, technical expertise and bespoke automation solutions backed by outstanding customer service.
2025 has been a big year for LED Controls, and our blog has expanded accordingly. We've covered a wide range of topics across industrial control and factory automation this year. From core technology explainers and new product releases to panel building best practice...
2025 has been a big year for LED Controls, and our blog has expanded accordingly. We've covered a wide range of topics across industrial control and factory automation this year. From core technology explainers and new product releases to panel building best practice...