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MERSEN FUSE 6,9 GRB 17 P 55 6,9GRB17P55
The Protistor® 17×49 gR fuse-link is purpose-built for semiconductor device protection in industrial applications, rated 55A at 690VAC with striker indication.
£38.94
Why Choose the Mersen N220996 Protistor Semiconductor Fuse?
The Mersen N220996 is a compact and highly reliable high-speed semiconductor fuse designed to protect sensitive power electronic equipment against overloads and short-circuit currents. As part of the established Mersen Protistor BS88-4 fuse range, it combines rapid fault interruption with extremely high breaking capacity for dependable industrial circuit protection.
This fuse features a gR full-range operating class, enabling it to clear both overload and short-circuit currents while protecting power semiconductor devices. Its fast current-limiting performance helps reduce the electrical, thermal and mechanical energy transferred to components such as diodes, thyristors, rectifiers and IGBTs during a fault.
With a rated current of 55 A and an IEC rated voltage of 690 V AC, the Mersen N220996 is ideal for rectifiers, small inverters, UPS systems and variable-speed AC drives. Its compact 17 × 49 mm British Standard fuse-link format and integrated striker support straightforward installation and reliable fuse operation indication.
Key Advantages
- High-speed semiconductor fuse designed for power electronic protection.
- 55 A rated current for industrial control and conversion circuits.
- 690 V AC IEC voltage rating suitable for demanding electrical systems.
- gR full-range operating class clears overload and short-circuit currents.
- Integrated striker provides clear fuse operation indication.
- Extremely high breaking capacity helps minimise equipment damage and downtime.
Key Features
- Mersen Protistor BS88-4 semiconductor fuse range.
- 55 A nominal current rating.
- 690 V AC IEC rated voltage.
- 700 V AC and 600 V DC UL ratings.
- gR full-range semiconductor protection characteristic.
- Compact 17 × 49 mm fuse-link format.
- Integrated striker indication system.
- UL recognised construction for industrial applications.
Reliable Full-Range Protection for Power Electronics
High-speed semiconductor fuses such as the Mersen N220996 interrupt dangerous fault currents before excessive energy can damage sensitive power electronic components. Their rapid response and current-limiting characteristics help protect semiconductor assemblies while improving the operational reliability of industrial power systems.
The gR operating class provides full-range protection against both overloads and short circuits. This makes the N220996 suitable for applications requiring comprehensive semiconductor protection, improved system safety and selective coordination with other fuses in the electrical distribution circuit.
Typical Applications
- Variable-speed AC drives and motor controllers.
- Industrial rectifiers and power converters.
- Small inverters and power conversion systems.
- Uninterruptible power supply systems.
- Industrial power supplies and battery chargers.
- Semiconductor-controlled automation equipment.
Technical Specifications
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| Fuse Indication | Striker | |
|---|---|---|
| Fuse Type | Semiconductor | |
| Fuse Size | 17x49 mm | |
| Voltage | 690 V | |
| Item number | N220996 | |
| Catalogue No | BS17GB69V55P | |
| Description | British Standard fuse-link Protistor® 17x49 gR 690VAC IEC 55A With Striker | |
| EAN/UPC Code | 3605340249194 | |
| Rated voltage AC UL | 700 V | |
| Rated voltage DC UL | 600 V | |
| Rated voltage AC IEC | 690 V | |
| Ampere Rating | 55 A | |
| AC or DC | AC | |
| Fuse Size | 17x49 | |
| Mounting | Bolted | |
| Clearing I2t At Rated Voltage | 1320 A²s | |
| Melting I2t | 210 A²s | |
| AC Max I.R./Breaking Capacity | I1: 200 kA | |
| Design Details | gRB | |
| Indication System | Yes | |
| Indication System Type | Striker | |
| Connection/Terminal Material | Copper | |
| Connection/Terminal Type | L Brackets | |
| Product Diameter | 18.5 mm | |
| Product Width | 27 mm | |
| Product Length | 77.2 mm | |
| Product Height | 24 mm | |
| Sell Pack Quantity | 3 EA | |
| Sell Pack Weight | 0.18 kg | |
| Sell Pack Width | 110 mm | |
| Sell Pack Length | 140 mm | |
| Sell Pack Height | 40 mm | |
| Product group | Semiconductor Protection Fuses | |
| Body/Insulating Material | Ceramic | |
| Product Weight | 0.06 kg | |
| Power Dissipation at Rated Current Value | 13.5 W | |
| HS Code | 85361050 | |
| Country of Manufacture | India |
Frequently Asked Questions
What is the Mersen N220996 used for?
The Mersen N220996 provides high-speed overload and short-circuit protection for power semiconductors used in drives, rectifiers, inverters, UPS systems and other industrial electronic equipment.
What is the current rating of the Mersen N220996?
The fuse has a nominal current rating of 55 A.
What voltage is this fuse rated for?
The Mersen N220996 is rated at 690 V AC under IEC standards, with UL ratings of 700 V AC and 600 V DC.
What does the gR operating class mean?
The gR classification indicates that the fuse provides full-range protection for semiconductor devices, clearing both overload and short-circuit currents.
Does the Mersen N220996 include an indicator?
Yes. The fuse incorporates an integrated striker that provides operation indication and can be used with compatible auxiliary microswitch equipment.
Trusted for Semiconductor Circuit Protection
Mersen Protistor high-speed fuses are widely specified by OEMs, panel builders and industrial engineers to provide dependable full-range protection for critical semiconductor and power conversion equipment.
