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.
MERSEN FUSE A 070 URD 32 KI 0630 A070URD32KI0630
High-performance high-speed fuse with striker indication and slotted blades for semiconductor protection, rated 630A at 690VAC IEC and 700VAC UL.
£115.21
Why Choose the Mersen D300199 Protistor® High-Speed Semiconductor Fuse?
The Mersen D300199 is a premium Protistor® Size 32 square body high-speed semiconductor fuse designed to provide ultra-fast protection for sensitive power electronic equipment. Engineered for demanding industrial applications, this aR class fuse delivers partial-range semiconductor protection for diodes, thyristors, IGBTs and other power semiconductor devices operating on 690 V AC (IEC) and 700 V AC (UL) systems.
Manufactured by Mersen, the D300199 features a robust square body construction with short slotted blade terminals and an integrated striker indicator for rapid fault indication and simplified maintenance. Silver-plated contact surfaces and non-magnetic hardware provide excellent electrical performance, low let-through energy and long service life in demanding industrial environments.
With a 630 A current rating, 690 V AC IEC / 700 V AC UL voltage rating and a 200 kA breaking capacity, the D300199 is ideally suited for protecting variable speed drives, industrial converters, UPS systems and other critical power conversion equipment.
Key Advantages
- Ultra-fast aR semiconductor protection fuse.
- 630 A rated current for demanding industrial applications.
- 690 V AC IEC / 700 V AC UL voltage rating.
- Integrated striker indicator for rapid maintenance.
- Silver-plated short slotted blade terminals provide reliable electrical connections.
- High 200 kA breaking capacity for dependable fault interruption.
Key Features
- Mersen Protistor® Size 32 semiconductor fuse.
- Catalogue number: A070UD32KI630.
- 630 A current rating.
- 690 V AC IEC / 700 V AC UL voltage rating.
- aR operating class for semiconductor protection.
- Integrated striker indication system.
- Short slotted blade terminals.
- Square body bolted mounting design.
Reliable Protection for Power Electronics
High-speed semiconductor fuses are specifically designed to minimise damage caused by overloads and short circuits in sensitive electronic equipment. Their ultra-fast operating characteristics reduce fault energy, helping extend the service life of expensive semiconductor devices while improving equipment reliability.
The Mersen Protistor® range is trusted worldwide throughout industrial automation, renewable energy and power conversion industries for delivering exceptional protection, excellent current limiting performance and high interrupting capacity.
Typical Applications
- Variable speed drives.
- Industrial inverters and converters.
- Power semiconductor protection.
- UPS systems.
- Renewable energy power conversion equipment.
- Industrial automation and motor control systems.
Technical Specifications
Tick the specs you need, then view products that match.
| Fuse Indication | Striker | |
|---|---|---|
| Fuse Type | Semiconductor | |
| Fuse Class | aR | |
| Voltage | 690 V | |
| Item number | D300199 | |
| Catalogue No | A070UD32KI630 | |
| Description | Square Body High-Speed Fuse Protistor® Size 32 aR 690VAC IEC 700VAC UL 630A With Striker Slotted Blades short | |
| EAN/UPC Code | 3605340324761 | |
| Rated voltage AC UL | 700 V | |
| Rated voltage AC IEC | 690 V | |
| Ampere Rating | 630 A | |
| RoHS Compliant | Yes | |
| AC or DC | AC | |
| Speed/Characteristic | aR | |
| Fuse Size | 32 | |
| Mounting | Bolted | |
| Clearing I2t At Rated Voltage | 310 kA²s | |
| Melting I2t | 54 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 | 105 W | |
| HS Code | 85361090 | |
| Country of Manufacture | France |
Frequently Asked Questions
What is the Mersen D300199 used for?
The Mersen D300199 protects semiconductor devices such as IGBTs, thyristors and diodes against overloads and short circuit faults.
What is the current rating of this fuse?
The D300199 has a 630 A rated current.
What voltage systems is the fuse designed for?
It is rated for 690 V AC (IEC) and 700 V AC (UL) applications.
Does this fuse include a blown fuse indicator?
Yes. It features an integrated striker indicator for rapid fault identification and simplified maintenance.
Which applications commonly use this fuse?
It is widely used in industrial drives, converters, UPS systems, renewable energy installations and semiconductor protection circuits.
Trusted for Semiconductor Protection Worldwide
Mersen Protistor® semiconductor fuses are trusted worldwide by OEM manufacturers, panel builders and industrial engineers to protect valuable power electronic equipment in demanding industrial applications.
