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MERSEN FUSE 6,9 URD 31 EF 0200 6,9URD31EF0200
High-speed fuse designed for semiconductor protection with 200A rating, 690VAC IEC and 700VAC UL voltage ratings, featuring a striker indication system and open slot blade terminals.
£69.40
Why Choose the Mersen C300037 PC31UD69V200EF High-Speed Fuse?
The Mersen C300037 PC31UD69V200EF is an ultra-fast square body semiconductor fuse engineered to protect sensitive power electronic devices against damaging short-circuit currents. Part of the established Mersen Protistor® Size 31 aR series, it is designed for reliable protection of diodes, thyristors, IGBTs and other semiconductor components used in industrial power conversion equipment.
The fuse incorporates precision die-cut elements embedded in solidified silica sand, helping control internal arcing while delivering low let-through energy and effective current limitation. Its ceramic body, silver-plated copper contacts and non-magnetic hardware provide dependable electrical and mechanical performance in demanding industrial environments.
With a rated current of 200 A, an IEC voltage rating of 690 V AC and a UL voltage rating of 700 V AC, the C300037 is suitable for motor drives, inverters, converters, UPS systems and similar power electronic equipment. Open-slot blade terminals support secure bolted installation, while the integrated striker provides convenient fuse-status indication.
Key Advantages
- Ultra-fast aR semiconductor fuse for short-circuit protection.
- 200 A rated current for industrial power conversion equipment.
- 690 V AC IEC and 700 V AC UL ratings.
- High 200 kA breaking capacity for severe fault conditions.
- Low I²t performance helps minimise stress on semiconductor devices.
- Integrated striker provides clear fuse-operation indication.
Key Features
- Mersen Protistor® Size 31 aR series.
- 200 A ampere rating.
- 690 V AC IEC / 700 V AC UL.
- Square body ceramic fuse construction.
- Silver-plated copper open-slot blade terminals.
- Bolted mounting configuration.
- Integrated striker indication system.
- Current-limiting design with low melting and clearing I²t values.
Reliable Protection for Industrial Power Electronics
High-speed semiconductor fuses operate considerably faster than general-purpose industrial fuses, enabling them to limit fault energy before vulnerable electronic components suffer serious thermal or electrical damage. Their rapid response helps protect valuable equipment while reducing the risk of extended production downtime.
The Mersen Protistor® range is developed for power conversion systems requiring low I²t performance, high interrupting capacity and reliable cycling capability. These characteristics make the C300037 suitable for professional installations in which dependable semiconductor protection is critical.
Typical Applications
- Variable frequency drives and motor drives.
- Industrial inverters and power converters.
- Uninterruptible power supply systems.
- Rectifiers and semiconductor power assemblies.
- Renewable energy conversion equipment.
- Industrial automation and process-control systems.
Technical Specifications
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| Fuse Indication | Striker | |
|---|---|---|
| Fuse Type | Semiconductor | |
| Fuse Class | aR | |
| Voltage | 690 V | |
| Item number | C300037 | |
| Catalogue No | PC31UD69V200EF | |
| Description | Square Body High-Speed Fuse Protistor® Size 31 aR 690VAC IEC 700VAC UL 200A With Striker Open Slot Blades | |
| EAN/UPC Code | 3605340322613 | |
| Rated voltage AC UL | 700 V | |
| Rated voltage AC IEC | 690 V | |
| Ampere Rating | 200 A | |
| RoHS Compliant | Yes | |
| AC or DC | AC | |
| Speed/Characteristic | aR | |
| Fuse Size | 31 | |
| Mounting | Bolted | |
| Clearing I2t At Rated Voltage | 15000 A²s | |
| Melting I2t | 2600 A²s | |
| 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 | Open Slot Blades | |
| Product Width | 51 mm | |
| Product Length | 109.4 mm | |
| Product Height | 56.5 mm | |
| Sell Pack Quantity | 3 EA | |
| Sell Pack Weight | 1.2129 kg | |
| Sell Pack Width | 143 mm | |
| Sell Pack Length | 175 mm | |
| Sell Pack Height | 73 mm | |
| Product group | Semiconductor Protection Fuses | |
| Body/Insulating Material | Ceramic | |
| Product Weight | 0.4043 kg | |
| Power Dissipation at Rated Current Value | 45 W | |
| HS Code | 85361090 | |
| Country of Manufacture | France |
Frequently Asked Questions
What is the Mersen C300037 used for?
It provides ultra-fast short-circuit protection for semiconductor devices such as diodes, thyristors and IGBTs used in industrial power conversion equipment.
What is the current rating of the C300037?
The Mersen C300037 has a rated current of 200 A.
What voltage can this fuse support?
It is rated for 690 V AC under IEC requirements and 700 V AC under UL requirements.
What type of terminals does this fuse use?
The fuse uses silver-plated copper open-slot blade terminals designed for secure bolted mounting.
Does the Mersen C300037 include an indicator?
Yes. It includes an integrated striker that indicates when the fuse has operated and may be used with compatible monitoring equipment.
Trusted for Critical Semiconductor Protection
Mersen Protistor® high-speed fuses are widely specified by OEMs, panel builders and industrial engineers to protect critical semiconductor equipment in demanding power conversion applications.
