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MERSEN FUSE 6,9 URZ 17 P 45 BS17UZ69V45P
British Standard fuse-link Protistor® 17×49 aR 690VAC IEC 45A With Striker designed for semiconductor protection in industrial electrical systems.
£39.71
Why Choose the Mersen Y221258 Industrial Fuse?
The Mersen Y221258 is an industrial electrical fuse and circuit-protection component intended for maintenance, repair and replacement applications in compatible equipment. Identified by the manufacturer reference Y221258, it provides a precise part-number match for engineers and maintenance professionals replacing an existing Mersen component.
Mersen develops specialist fuse links and circuit-protection products for industrial automation, power conversion, motor control and electrical distribution systems. When correctly specified, an industrial fuse interrupts excessive fault current before it can cause serious damage to cables, switching devices, semiconductor components or connected machinery.
Before installing the Y221258, its current rating, voltage rating, fuse class, breaking capacity, physical dimensions and terminal arrangement should be checked against the existing component or official equipment documentation. Matching the complete specification is essential for safe operation and reliable protection.
Key Advantages
- Genuine Mersen industrial circuit-protection component.
- Y221258 manufacturer reference supports accurate replacement identification.
- Designed to interrupt potentially damaging electrical fault currents.
- Suitable for maintenance and repair of compatible industrial equipment.
- Supports reliable protection of cables and electrical components.
- Manufactured by an established specialist in industrial fuse technology.
Key Features
- Mersen industrial fuse product.
- Manufacturer part number Y221258.
- Designed for electrical circuit protection.
- Suitable for compatible industrial equipment and fuse assemblies.
- Intended for replacement and maintenance applications.
- Electrical ratings should be matched to the original fuse.
- Physical dimensions and terminal arrangement must be verified.
- Installation by a suitably qualified professional is recommended.
Reliable Protection for Industrial Electrical Systems
Industrial fuses operate by disconnecting a circuit when current exceeds the fuse element's designed operating limits. Rapid and controlled fault interruption can help reduce thermal stress, limit equipment damage and prevent a localised electrical fault from affecting other parts of an installation.
A replacement fuse should never be selected by physical appearance or nominal current alone. The Mersen Y221258 must match the required voltage rating, utilisation category, time-current characteristic, breaking capacity, dimensions and connection type specified by the equipment manufacturer.
Typical Applications
- Industrial electrical equipment maintenance.
- Control-panel and switchgear repairs.
- Motor-control and automation systems.
- Power conversion equipment.
- Electrical distribution assemblies.
- Replacement of an existing component marked Y221258.
Technical Specifications
Tick the specs you need, then view products that match.
| Fuse Indication | Striker | |
|---|---|---|
| Fuse Type | Semiconductor | |
| Fuse Size | 17x49 mm | |
| Fuse Class | aR | |
| Voltage | 690 V | |
| Item number | Y221258 | |
| Catalogue No | BS17UZ69V45P | |
| Description | British Standard fuse-link Protistor® 17x49 aR 690VAC IEC 45A With Striker | |
| EAN/UPC Code | 3605340251609 | |
| Rated voltage AC UL | 700 V | |
| Rated voltage AC IEC | 690 V | |
| Ampere Rating | 45 A | |
| RoHS Compliant | Yes | |
| AC or DC | AC | |
| Speed/Characteristic | aR | |
| Fuse Size | 17x49 | |
| Mounting | Bolted | |
| Clearing I2t At Rated Voltage | 610 A²s | |
| Melting I2t | 96 A²s | |
| AC Max I.R./Breaking Capacity | I1: 200 kA | |
| 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 | 10 EA | |
| Sell Pack Weight | 0.5 kg | |
| Sell Pack Width | 110 mm | |
| Sell Pack Length | 250 mm | |
| Sell Pack Height | 30 mm | |
| Product group | Semiconductor Protection Fuses | |
| Body/Insulating Material | Ceramic | |
| Product Weight | 0.05 kg | |
| Power Dissipation at Rated Current Value | 14.5 W | |
| HS Code | 85361050 |
Frequently Asked Questions
What is the Mersen Y221258 used for?
The Y221258 is an industrial circuit-protection component intended for installation in compatible electrical equipment. Its exact application should be confirmed using the original equipment documentation.
How can I confirm that Y221258 is the correct replacement?
Check that the complete part number and all electrical markings match the existing component, equipment manual or official Mersen technical documentation.
Can I replace it with a fuse of the same physical size?
No. The replacement must also match the required current, voltage, fuse class, breaking capacity and operating characteristic.
Where can I find the electrical ratings?
The ratings may be printed on the fuse body or provided in the equipment manual, original bill of materials or official manufacturer documentation.
Who should install the Mersen Y221258?
The component should be installed by a suitably qualified electrical professional after the equipment has been safely isolated and the full specification has been verified.
Trusted Industrial Circuit Protection
Mersen circuit-protection products are used across industrial electrical systems where accurate fuse selection, dependable fault interruption and equipment compatibility are essential.
