A16B-1212-0901 - Power Supply Module for FANUC 16 18 B/C CNC Control Systems

A16B-1212-0901 power supply module for FANUC CNC control systems and industrial automation equipment using the matching A16B-1212 series main rack power supply. This module is used to provide regulated control power for compatible CNC control racks, CPU / I/O sections, and related control electronics. Always match the original power supply part number, rack style, connector layout, and system requirements before installation.

Technical Specifications

• Primary Part Number: A16B-1212-0901
• Part Type: CNC power supply module
• Common Description: Power Supply A1
• Alternate Description: Power supply board / 200V control power supply unit
• Product Series: A16B-1212 Series
• Application Type: FANUC CNC control rack power supply
• Input Voltage: 200-240V AC
• Input Frequency: 50/60Hz
• AC Input Current: 4A
• AC Output: 200-240V AC
• AC Output Current: 2.5A max
• DC Output: Multi-output regulated DC control power supply
• Front Panel Connections: DC Output, Control, AC Output, AC Input
• Status Indicators: Alarm / power status LEDs
• Module Style: Rack-mounted / slide-in CNC power supply module
• Circuit Design: PCB power supply assembly with transformer, capacitors, inductors, relays, fuses, and heat sinks
• Cooling Style: Passive heat sink design
• Installation Type: Internal CNC control cabinet module
• System Use: CNC controller power distribution and control rack power regulation

Interchangeable / Replacement Part Numbers

A16B-1212-0901, A16B12120901, A16B-1212-0901/23D

✅ Confirmed Compatibility

Please note that the following list is not exhaustive. Compatibility depends on your CNC control configuration, machine builder wiring, rack type, original power supply part number, connector layout, and control generation. It’s essential to verify compatibility with your original module label and CNC control documentation prior to installation.

✔ FANUC 16 / 18 B/C Control Systems: Compatible with GE FANUC 16B/C and 18B/C control systems using the A16B-1212-0901 A1 power supply module.
✔ FANUC 16 Series Controls: 16MB, 16TB, 16MC, 16TC and related 16 Series configurations that specify A16B-1212-0901.
✔ FANUC 18 Series Controls: 18MB, 18TB, 18MC, 18TC and related 18 Series configurations that specify A16B-1212-0901.
✔ FANUC 15 / 150 Series Controls: Compatible with 15 / 150 Series control systems where the original installed power supply is A16B-1212-0901.
✔ FANUC 21 Series Controls: Compatible with 21 Series control systems where the machine documentation or original module label calls for A16B-1212-0901.
✔ FANUC Main Rack Applications: Designed for compatible FANUC CNC main racks using the A16B-1212 Series control power supply layout.
✔ CNC Machine Applications: Used in compatible CNC lathes, machining centers, mills, turning centers, EDM machines, and other machine-tool control cabinets equipped with the matching FANUC control rack and original A16B-1212-0901 power supply.

☑️ Key Features

☑️ Replacement power supply module for compatible FANUC CNC control systems
☑️ A16B-1212 Series rack-style CNC power supply design
☑️ Commonly referenced as Power Supply A1
☑️ Designed for 200-240V AC industrial control cabinet input
☑️ Provides regulated control power for compatible CPU, I/O, and interface sections
☑️ Front panel DC Output, Control, AC Output, and AC Input connector layout
☑️ Built-in status indicators for power / alarm monitoring
☑️ Integrated power conversion components with heat sinks, transformer, inductors, capacitors, relays, and fuse protection
☑️ Useful replacement for failed, unstable, alarm-generating, or non-powering CNC control rack power supplies
☑️ Direct-fit replacement when the original module part number and connector layout match
☑️ Helps restore proper power distribution to compatible CNC control systems

⚙️ Fit Notes

• Match your original power supply part number whenever possible.
• This module should be replaced only with A16B-1212-0901 or a verified compatible revision.
• Similar-looking A16B-1212 Series power supply modules are not automatically interchangeable.
• Do not substitute nearby part numbers unless your service documentation confirms compatibility.
• Confirm the front connector layout, AC input rating, AC output rating, DC output connector, control connector, backplane connector, and rack mounting style before ordering.
• Verify your machine uses a compatible 200-240V AC CNC control cabinet configuration.
• Compatibility is usually determined by the installed control rack and original power supply part number, not only by the machine model.
• This item page documents the power supply module itself. Do not assume cables, batteries, external wiring, mounting hardware, or additional control boards are included unless specifically stated in the listing.
• CNC power supplies contain high-voltage components and should only be installed by a qualified technician.
• Always disconnect main power, follow proper lockout/tagout procedures, and allow capacitors to fully discharge before servicing.