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MERSEN FUSE 6,900 CP GR 14.51 0032 FR14GR69V32
The Protistor® Size 14×51 gR fuse delivers rapid interruption of short-circuit currents in demanding industrial applications up to 690VAC. Certified to IEC standards, this 32A gR-class fuse ensures reliable safeguarding of power semiconductors and critical circuits.
£7.35
Why Choose the Mersen FR14GR69V32 Protistor® High-Speed Semiconductor Fuse?
The Mersen FR14GR69V32 is a high-performance Protistor® cylindrical semiconductor protection fuse engineered for rapid, full-range protection of sensitive power electronic equipment. Its gR operating characteristic enables the fuse to clear both overload currents and short-circuit faults, helping to protect valuable semiconductor components while reducing damaging thermal and electrical stress.
Designed in a compact 14 × 51 mm cylindrical format, the FR14GR69V32 is rated at 32 A and 690 V AC under IEC standards. It is suitable for protecting IGBTs, thyristors, SCRs, diodes, rectifiers and other semiconductor devices used in drives, converters, industrial power supplies and renewable energy equipment.
The fuse offers a high 160 kA AC breaking capacity, silver-plated copper ferrule connections and a durable ceramic body. This version is supplied without a striker indicator, making it suitable for installations where remote or mechanical fuse-operation signalling is not required.
Key Advantages
- High-speed gR full-range semiconductor protection.
- 32 A rated current for industrial power-electronic circuits.
- 690 V AC IEC voltage rating.
- High 160 kA AC breaking capacity.
- Clears both overloads and short-circuit currents.
- Low let-through energy helps protect sensitive semiconductors.
- Compact 14 × 51 mm cylindrical construction.
- Suitable for coordinated circuit-protection systems.
Key Features
- Manufacturer: Mersen.
- Series: Protistor® 14 × 51 gR.
- Catalogue number: FR14GR69V32.
- Item number: H1017205.
- Current rating: 32 A.
- Voltage rating: 690 V AC IEC.
- Fuse characteristic: gR.
- Indicator: None.
- Silver-plated copper ferrule terminals.
- Ceramic insulating body.
- RoHS compliant.
Full-Range Protection for Power Semiconductors
The FR14GR69V32 uses a gR full-range characteristic, enabling it to interrupt both lower-level overload currents and high short-circuit currents. This makes it particularly suitable for power-electronic circuits where fast fault clearance and reduced let-through energy are essential.
Its current-limiting performance helps restrict the peak fault current and energy passed into downstream components. This can reduce damage to semiconductor modules, busbars and associated equipment while supporting improved system reliability and reduced maintenance downtime.
Typical Applications
- Variable-speed and frequency drives.
- Industrial inverters.
- Uninterruptible power supplies.
- AC and DC power converters.
- IGBT and thyristor protection.
- Industrial rectifier systems.
- Semiconductor power supplies.
- Battery energy-storage systems.
- Solar and renewable energy equipment.
- Industrial automation and OEM machinery.
Technical Specifications
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| Fuse Type | Semiconductor | |
|---|---|---|
| Fuse Size | 14x51 mm | |
| Fuse Class | gR | |
| Voltage | 690 V | |
| Item number | H1017205 | |
| Catalogue No | FR14GR69V32 | |
| Description | High-Speed Cylindrical Fuse Protistor® Size 14x51 gR 690VAC IEC 32A | |
| EAN/UPC Code | 3605340506983 | |
| Rated voltage AC IEC | 690 V | |
| Ampere Rating | 32 A | |
| RoHS Compliant | Yes | |
| AC or DC | AC | |
| Speed/Characteristic | gR | |
| Fuse Size | 14x51 | |
| Mounting | Clip | |
| Clearing I2t At Rated Voltage | 700 A²s | |
| Melting I2t | 96.7 A²s | |
| AC Max I.R./Breaking Capacity | I1: 160 kA | |
| Connection/Terminal Material | Silver-Plated Copper | |
| Connection/Terminal Type | Ferrule | |
| Product Diameter | 14.3 mm | |
| Product Length | 51 mm | |
| Sell Pack Quantity | 10 EA | |
| Sell Pack Weight | 0.2 kg | |
| Sell Pack Width | 75 mm | |
| Sell Pack Length | 104 mm | |
| Sell Pack Height | 16 mm | |
| Product group | Semiconductor Protection Fuses | |
| Body/Insulating Material | Ceramic | |
| Product Weight | 0.02 kg | |
| Power Dissipation at Rated Current Value | 6.9 W | |
| HS Code | 85361050 | |
| Country of Manufacture | Tunisia |
Frequently Asked Questions
What is the Mersen FR14GR69V32 used for?
The FR14GR69V32 is designed to protect power semiconductors such as IGBTs, thyristors, SCRs, diodes and rectifiers against overload and short-circuit currents.
What is the current rating of the FR14GR69V32?
The Mersen FR14GR69V32 has a rated current of 32 A.
What voltage is this fuse rated for?
It is rated at 690 V AC in accordance with IEC specifications.
What does the gR fuse characteristic mean?
A gR fuse provides full-range semiconductor protection, allowing it to clear both overload currents and short-circuit faults.
Does the FR14GR69V32 include a striker indicator?
No. The FR14GR69V32 is the version without a striker. The corresponding striker-equipped model is identified by a catalogue number ending in T.
Which fuse holders are compatible with this fuse?
The fuse is designed for compatible 14 × 51 mm cylindrical fuse holders and fuse clips, including suitable Mersen Modulostar® and UltraSafe™ products.
Trusted for High-Speed Semiconductor Protection
Mersen Protistor® fuses are widely specified by electrical engineers, machine builders and OEMs for dependable protection of critical semiconductor equipment in demanding industrial power applications.
