A50L-0001-0259#N 2MBI300NK-060 Fanuc Fuji Electric IGBT Module 300A 600V

Buy online your A50L-0001-0259#N 2MBI300NK-060 reference Fanuc A50L-0001-0259#N from our e-store Cnc-shopping, specialist in CNC machine-tools spare parts.

This power semiconductor from FANUC belongs to the FANUC FUJI Transistor family and is used in the high current inverter stage of FANUC spindle drives. It serves as a CNC replacement component and spare part for spindle amplifier repairs and retrofit projects. Cross-referenced with FUJI ELECTRIC 2MBI300NK-060-01, it is suitable for maintenance teams looking for a reliable replacement unit to restore machine uptime on CNC machine tools.

The unit is a dual IGBT module designed to handle 300 A at a 600 V class, enabling efficient switching of the spindle motor’s inverter bridge. In a FANUC spindle amplifier, it forms the core of the power stage that converts the DC link into a three-phase output for the spindle. Its rating supports heavy spindle load profiles commonly seen on turning centers, machining centers and grinding machines where high torque acceleration and frequent speed changes are required.

Identification is straightforward in the field. If your spindle amplifier specifies A50L-0001-0259#N or the FUJI 2MBI300NK-060-01 equivalent on the power module, this part is a direct electrical replacement. The module’s dual configuration helps simplify layout in compact inverter sections, and its 600 V rating aligns with DC bus levels derived from standard 400 VAC class mains after rectification. Use it when repairing drives that originally shipped with the same code to keep the design consistent and serviceable.

Beyond FANUC spindle amplifiers, this module is also used in compatible industrial inverter applications that call for the 2MBI300NK-060 format and ratings. For mixed fleets or legacy machines, keeping this part in industrial spare inventory reduces diagnostic time since technicians can swap a known-good power module to confirm a suspected fault in the inverter stage.

Reference: A50L-0001-0259#N

Manufacturer: FANUC

Product type: FANUC FUJI Transistor

Main function: Dual IGBT power module for high current spindle inverter switching and CNC drive repairs.

Applications: FANUC spindle amplifiers on CNC machine tools, inverter-stage repairs, retrofit and maintenance tasks on systems specifying FUJI 2MBI300NK-060-01.

Key technical data: Rated 300 A, 600 V, dual module configuration, cross-reference FUJI ELECTRIC 2MBI300NK-060-01, new and electrically tested, made in Japan, commonly sourced as a replacement unit for FANUC spindle drives with worldwide shipping and fast dispatch depending on availability.

In day-to-day maintenance, this part is selected when a spindle amplifier shows confirmed power-stage failure or when preventive replacement is scheduled during a rebuild. Keeping one or more units on the shelf as a stocked spare helps shorten machine downtime on the production floor. For planned retrofits, using the exact FANUC coded device preserves the original thermal and electrical design so commissioning remains predictable.

Each unit is inspected and tested on appropriate CNC test benches or simulators by skilled engineers, then packed in protective packaging suitable for industrial shipping. New modules are supplied with a standard warranty from Cnc-shopping, and shipment can be arranged quickly, including fast dispatch options when available.

This item can be used as an emergency spare to bring a down machine back online and to support older drives where the original parts may be considered an obsolete part. Cnc-shopping can assist with sourcing hard-to-find components, and repair service or exchange service options may be available to help maintain legacy CNC installations.

Frequently asked questions about A50L-0001-0259#N:

Is this the same as FUJI 2MBI300NK-060-01?
Yes, it is the recognized cross-reference. If your documentation lists 2MBI300NK-060-01, this module matches the electrical rating and form factor used in FANUC spindle inverter stages.

Will it fit my FANUC spindle amplifier without modification?
If your drive originally used A50L-0001-0259#N or the 2MBI300NK-060 family, it is a drop-in electrical replacement. Verify the mounting footprint and gate connections match the removed module before final assembly.

Can it be used in non-FANUC inverters?
It can be used where the design specifies a 2MBI300NK-060 series dual IGBT rated 300 A and 600 V. Confirm gate drive characteristics, mechanical footprint and cooling provisions with the equipment documentation.

What are common replacement practices for this part?
Technicians typically replace the faulty module with a new tested unit and verify proper interface to the heatsink and bus connections. Follow OEM torque and thermal interface guidelines to maintain reliability after the repair.