High-speed fuse offering rapid fault response and superior breaking capacity up to 690VAC and 80A with integrated striker and L brackets for easy installation and visual indication.
£54.81
The Mersen J330127 is an industrial carbon brush replacement component designed to transfer electrical current between stationary and rotating parts in compatible motors, generators and other rotating electrical machinery. Manufactured by Mersen, a specialist in electrical power and advanced materials, it is intended for professional maintenance, repair and equipment overhaul applications.
Carbon brushes are essential wear components that maintain electrical contact with a rotating commutator or slip ring. Selecting the correct brush can help support stable conductivity, controlled wear and dependable machine operation while reducing the likelihood of excessive sparking, overheating and premature damage to electrical contact surfaces.
The J330127 manufacturer reference enables engineers, maintenance teams and purchasing departments to identify the required replacement component. As brush dimensions, carbon grade, contact profile, lead arrangement and terminal configuration may be application-specific, compatibility should be confirmed using the original brush and the equipment manufacturer’s technical documentation.
Carbon brushes transfer current while maintaining sliding contact with a rotating commutator or slip ring. The brush material gradually wears during normal operation, making routine inspection important for maintaining adequate brush length, spring pressure and contact quality.
Correct brush selection is essential because carbon composition, dimensions, contact geometry and operating conditions can directly affect electrical performance and service life. The Mersen J330127 should be matched carefully with the original component and fitted according to the machinery manufacturer’s maintenance instructions.
| Item number | J330127 |
|---|---|
| Catalogue No | BS000UB69V80P |
| Description | Square Body High-Speed Fuse Protistor® Size NH 000 aR 690VAC IEC 80A With Striker L Brackets |
| EAN/UPC Code | 3605340362237 |
| Rated voltage AC UL | 690 V |
| Rated voltage DC UL | 500 V |
| Rated voltage AC IEC | 690 V |
| Ampere Rating | 80 A |
| RoHS Compliant | Yes |
| AC or DC | AC/DC |
| Speed/Characteristic | aR |
| Fuse Size | NH000 |
| Mounting | Bolted |
| Clearing I2t At Rated Voltage | 2500 A²s |
| Melting I2t | 390 A²s |
| AC Max I.R./Breaking Capacity | I1: 200 kA |
| Max. Rated Breaking Capacity DC | 55 kA @ 600 V, L/R = 12 ms |
| DC Min. Breaking Capacity (MBC) | 20 kA @ 600 V, L/R = 12 ms |
| Indication System | Yes |
| Indication System Type | Striker |
| Connection/Terminal Material | Tin-Plated Copper |
| Connection/Terminal Type | L Brackets |
| Product Width | 32 mm |
| Product Length | 94 mm |
| Product Height | 27 mm |
| Sell Pack Quantity | 3 EA |
| Sell Pack Weight | 0.4668 kg |
| Sell Pack Width | 110 mm |
| Sell Pack Length | 130 mm |
| Sell Pack Height | 80 mm |
| Product group | Semiconductor Protection Fuses |
| Body/Insulating Material | Ceramic |
| Product Weight | 0.1556 kg |
| Power Dissipation at Rated Current Value | 21 W |
| HS Code | 85361090 |
| Country of Manufacture | Tunisia |
The Mersen J330127 is an industrial carbon brush used to transfer electrical current between stationary and rotating components in compatible motors, generators and other electrical machinery.
Yes. Carbon brushes gradually wear during normal operation and should be replaced when they reach the minimum permitted length, become damaged or no longer maintain reliable electrical contact.
Compare the manufacturer reference, brush dimensions, carbon grade, contact profile, lead arrangement and terminal type with the original component and the machine manufacturer’s technical documentation.
The brush is installed within a compatible brush holder so that its contact face can operate against the commutator or slip ring of the rotating machine.
Brushes operating on the same commutator or slip ring are often replaced as a matched set to support balanced spring pressure, consistent contact and even wear. Always follow the equipment manufacturer’s servicing guidance.
Mersen electrical carbon components are used by industrial maintenance professionals to support dependable current transfer, controlled brush wear and reliable operation across a wide range of rotating electrical equipment.
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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...