Standard delivery
£8 ex VAT · free over £200UK parcel delivery is £8 ex VAT, or free on orders over £200 ex VAT.
Heavier items may be charged at a weight-based or pallet rate, shown at checkout.
High-speed fuse providing reliable protection for sensitive power electronic devices up to 690VAC (IEC) and 700VAC (UL) with a rated current of 315A. Features flush-end striker for indication and robust ceramic body.
£71.78
The Mersen Q300003 is a genuine Mersen industrial electrical protection component intended for use with compatible fuse, power distribution and circuit protection equipment. Its distinct manufacturer reference enables engineers, panel builders and maintenance teams to identify the required component accurately when completing repairs, servicing established installations or sourcing replacement parts.
Mersen develops specialist electrical protection products for industrial machinery, control panels, power conversion equipment and electrical distribution systems. Choosing an original Mersen component helps preserve equipment compatibility, installation integrity and reliable system performance in demanding industrial environments.
The Mersen Q300003 is suitable for installations in which this exact manufacturer part number is specified. Product configuration and electrical requirements may vary between systems, so compatibility, dimensions, ratings and mounting details should be checked against the original component, equipment manual or approved Mersen documentation before ordering.
Correctly specified electrical protection components are essential for maintaining safe and dependable operation across machinery, control panels and power distribution systems. Selecting a replacement with the correct manufacturer reference helps reduce the risk of compatibility problems, installation delays and avoidable equipment downtime.
The Mersen Q300003 provides a traceable replacement option for compatible installations. Engineers should compare the product reference with the existing component, equipment drawings, maintenance records and approved parts list before installation or energisation.
Tick the specs you need, then view products that match.
| Fuse Indication | Striker | |
|---|---|---|
| Fuse Type | Semiconductor | |
| Fuse Class | aR | |
| Voltage | 690 V | |
| Item number | Q300003 | |
| Catalogue No | PC31UD69V315TF | |
| Description | Square Body High-Speed Fuse Protistor® Size 31 aR 690VAC IEC 700VAC UL 315A With Striker Flush ends metric threads | |
| EAN/UPC Code | 3605340322279 | |
| 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 | 31 | |
| Mounting | Bolted | |
| Clearing I2t At Rated Voltage | 44000 A²s | |
| Melting I2t | 7500 A²s | |
| AC Max I.R./Breaking Capacity | I1: 200 kA | |
| Indication System | Yes | |
| Indication System Type | Striker | |
| Connection/Terminal Material | Silver-Plated Brass | |
| Connection/Terminal Type | Flush ends | |
| Product Width | 51 mm | |
| Product Length | 50.6 mm | |
| Product Height | 56.5 mm | |
| Sell Pack Quantity | 3 EA | |
| Sell Pack Weight | 1.1478 kg | |
| Sell Pack Width | 85 mm | |
| Sell Pack Length | 168 mm | |
| Sell Pack Height | 65 mm | |
| Product group | Semiconductor Protection Fuses | |
| Body/Insulating Material | Ceramic | |
| Product Weight | 0.3826 kg | |
| Power Dissipation at Rated Current Value | 65 W | |
| HS Code | 85361090 | |
| Country of Manufacture | France |
The Mersen Q300003 is an industrial electrical protection component identified by the manufacturer part number Q300003.
It is intended for maintenance or replacement within compatible industrial electrical protection, fuse or power distribution equipment.
Compare the Q300003 reference with the number shown on the existing component, equipment manual, electrical drawings or approved replacement parts list.
Yes. The electrical ratings, dimensions, mounting arrangement and equipment compatibility should be confirmed before installation or energisation.
Installation should be completed by a suitably qualified electrical engineer or technician in accordance with the equipment instructions and applicable electrical regulations.
Mersen electrical protection products are used by panel builders, equipment manufacturers and industrial maintenance teams to support reliable power distribution, machinery protection and long-term electrical system performance.
We use cookies
We use essential cookies to run this site, your basket and checkout. With your permission we'd also like to use analytics and advertising cookies to understand how the site is used and to measure our adverts.