British Standard fuse-link Protistor® 17×49 aR 690VAC IEC 100A with high breaking capacity and fast-acting semiconductor protection.
£24.44
The Mersen L220971 is a manufacturer-specific electrical carbon replacement component intended for compatible industrial electrical machinery. Manufactured by Mersen, it is suitable for professional maintenance, repair and overhaul applications where accurate component selection and dependable electrical performance are essential.
Mersen manufactures specialist carbon and graphite components for motors, generators and other rotating electrical equipment. When correctly matched to the intended application, an electrical carbon component can support reliable current transfer, controlled wear and consistent machine operation.
The precise product type, dimensions, carbon grade, connection arrangement and equipment compatibility of the Mersen L220971 could not be verified from publicly available product information. Before purchasing or installing this component, compare the complete part number and physical specification with the original item, an authorised Mersen technical drawing or the equipment manufacturer’s documentation.
Electrical carbon components can perform conductive, mechanical or current-transfer functions within industrial machinery. Their dimensions, material grade, contact arrangement and connection type must be matched carefully to the intended equipment to maintain reliable operation and prevent premature wear or damage.
During replacement, inspect any associated holders, springs, flexible connections and contact surfaces where applicable. Contamination, scoring, overheating, loose connections or abnormal wear should be corrected before the equipment is returned to service.
| Item number | L220971 |
|---|---|
| Catalogue No | BS17UB69V100 |
| Description | British Standard fuse-link Protistor® 17x49 aR 690VAC IEC 100A |
| EAN/UPC Code | 3605340248708 |
| Rated voltage AC UL | 700 V |
| Rated voltage DC UL | 600 V |
| Rated voltage AC IEC | 690 V |
| Ampere Rating | 100 A |
| AC or DC | AC |
| Fuse Size | 17x49 |
| Mounting | Bolted |
| Clearing I2t At Rated Voltage | 6150 A²s |
| Melting I2t | 965 A²s |
| AC Max I.R./Breaking Capacity | I1: 200 kA |
| Design Details | URB |
| Connection/Terminal Material | Copper |
| Connection/Terminal Type | L Brackets |
| Product Diameter | 18.5 mm |
| Product Length | 77.2 mm |
| Sell Pack Quantity | 10 EA |
| Sell Pack Weight | 0.39 kg |
| Sell Pack Width | 100 mm |
| Sell Pack Length | 195 mm |
| Sell Pack Height | 25 mm |
| Product group | Semiconductor Protection Fuses |
| Body/Insulating Material | Ceramic |
| Product Weight | 0.039 kg |
| Power Dissipation at Rated Current Value | 23.5 W |
| HS Code | 85361090 |
| Country of Manufacture | India |
The Mersen L220971 is a manufacturer-specific electrical carbon replacement component intended for use with compatible industrial electrical equipment. Its exact configuration should be confirmed using authorised technical documentation.
Compare the complete L220971 part number, dimensions, carbon grade, connection arrangement and equipment model with the original component, an authorised Mersen drawing or the machine manufacturer’s documentation.
Visual similarity does not confirm compatibility. Electrical carbon components may have different dimensions, material grades and connection arrangements, even when they appear similar.
Inspect associated holders, springs, connections and contact surfaces where applicable. Check for contamination, scoring, overheating, looseness and abnormal wear before installing the replacement component.
Installation should be completed by suitably qualified personnel following the equipment manufacturer’s procedures and all applicable electrical safety requirements.
Mersen carbon and graphite technologies are used in industrial applications where accurate component selection, dependable electrical performance and controlled wear are important.
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2025 has been a big year for LED Controls, and our blog has expanded accordingly. We've covered a wide range of topics across industrial control and factory automation this year. From core technology explainers and new product releases to panel building best practice...
2025 has been a big year for LED Controls, and our blog has expanded accordingly. We've covered a wide range of topics across industrial control and factory automation this year. From core technology explainers and new product releases to panel building best practice...