Yaskawa GA51U4031
GA501 - 10 Percent Dynamic Braking
Dynamic Braking Resistor, 10% Duty Cycle - are rated for 10% duty cycle over a 100 second interval. These resistors are designed for separate panel mounting. Braking transistors are built-in on all GA500 models.
Lifecycle & replacement
Yaskawa's published discontinuation lists (checked 2026-09-01) do not assign a lifecycle status to this part number.
IAC stocks legacy spares and exchange units and quotes upgrade paths. Send us the nameplate details and we will confirm a compatible replacement.
Checked against: Yaskawa America Support By Product - Inverter Drives; Yaskawa America Support By Product - Servo Amplifiers; Yaskawa America Support By Product - Servomotors; Yaskawa America Support By Product - Machine Controllers; Yaskawa America Support By Product - PLC Controllers; Yaskawa America Support By Product - Spindle Drives; Yaskawa America Support By Product - Spindle Motors; Yaskawa product page carrying the verbatim definition of Legacy.
Technical specifications
GA501 - 10 Percent Dynamic Braking
| Normal Duty HP | 20 |
| Heavy Duty HP | 15 |
| 10% Dynamic Braking Option (Max 10 Second on-time) - Resistor - Quantity | 1 |
| 10% Dynamic Braking Option (Max 10 Second on-time) - Resistor Specifications - Resistance | 40 |
| 10% Dynamic Braking Option (Max 10 Second on-time) - Resistor Specifications - Watts | 2050 |
| 10% Dynamic Braking Option (Max 10 Second on-time) - Resistor Specifications - Enclosure | GCE6 |
| 10% Dynamic Braking Option (Max 10 Second on-time) - Resistor - Part Number | USR000039 |
480V, 3-Phase Input, 3% AC Input Reactors
| Nominal HP | 15 |
| Catalog Code - Normal Duty | GA51U4023 |
| Part Number - Open Type | URX000316 |
| Part Number - Enclosed Type | URX000419 |
480V, 3-Phase Input, 3% AC Input Reactors [GA501 - AC Input Reactors]
| Nominal HP | 20 |
| Catalog Code - Heavy Duty | GA51U4038 |
| Part Number - Open Type | URX000320 |
| Part Number - Enclosed Type | URX000421 |
480V, 3-Phase Input, 5% AC Input Reactors
| Nominal HP | 15 |
| Catalog Code - Normal Duty | GA51U4023 |
| Part Number - Open Type | URX000317 |
| Part Number - Enclosed Type | URX000568 |
480V, 3-Phase Input, 5% AC Input Reactors [GA501 - AC Input Reactors]
| Nominal HP | 20 |
| Catalog Code - Heavy Duty | GA51U4038 |
| Part Number - Open Type | URX000321 |
| Part Number - Enclosed Type | URX000575 |
480V, 3-Phase Input, 3% AC Output Reactors
| Nominal HP | 15 |
| Catalog Code - Normal Duty | GA51U4023 |
| Part Number - Open Type | 05P00620-0138 |
| Part Number - Enclosed Type | 05P00620-0042 |
480V, 3-Phase Input, 3% AC Output Reactors [GA501 - AC Output Reactors]
| Nominal HP | 20 |
| Catalog Code - Heavy Duty | GA51U4038 |
| Part Number - Open Type | 05P00620-0139 |
| Part Number - Enclosed Type | 05P00620-0047 |
480V, 3-Phase Input - 3% Bus Reactors
| Nominal HP | 15 |
| Catalog Code - Normal Duty | GA51U4023 |
| Part Number - Open Type | URX000052 |
| Part Number - Enclosed Type | URX000211 |
480V, 3-Phase Input - 3% Bus Reactors [GA501 - DC Reactors]
| Nominal HP | 20 |
| Catalog Code - Heavy Duty | GA51U4038 |
| Part Number - Open Type | URX000056 |
| Part Number - Enclosed Type | URX000221 |
480V, 3-Phase Input - 5% Bus Reactors
| Nominal HP | 15 |
| Catalog Code - Normal Duty | GA51U4023 |
| Part Number - Open Type | URX000054 |
| Part Number - Enclosed Type | URX000224 |
480V, 3-Phase Input - 5% Bus Reactors [GA501 - DC Reactors]
| Nominal HP | 20 |
| Catalog Code - Heavy Duty | GA51U4038 |
| Part Number - Open Type | URX000056 |
| Part Number - Enclosed Type | URX000221 |
GA501 - R1000 Options
| Motor Power - HP | 15 |
| Current Suppression Reactor | 05P00620-0137 |
| Power Coordination Reactor | 05P00620-0138 |
| Fuses (Qty: 3) | FU-002032 |
| Fuse Holder - Part # | FU-002055 |
| Fuse Holder - Qty | 1 |
| Catalog Code - Normal Duty | GA51U4023... |
| R1000 Part Number CIMR-RU 1 | 4A0010FAA |
GA501 - R1000 Options [GA501 - R1000 Options]
| Motor Power - HP | 20 |
| Current Suppression Reactor | URX000083 |
| Power Coordination Reactor | 05P00620-0139 |
| Fuses (Qty: 3) | FU-002032 |
| Fuse Holder - Part # | FU-002055 |
| Fuse Holder - Qty | 1 |
| Catalog Code - Heavy Duty | GA51U4038... |
| R1000 Part Number CIMR-RU 1 | 4A0014FAA |
Documentation & CAD
Files hosted by Yaskawa; links open the official document or download page. 3D CAD requires a free Yaskawa login.
Datasheets & catalogs
Manuals
- GA501 Technical Reference
- GA501 EtherNet/IP Technical Manual
- GA501 EtherNet/IP Technical Manual (EZZ025020)
- GA501 PROFINET Technical Manual
- GA501 PROFINET Technical Manual (EZZ025023)
- GA501 EtherCAT Technical Manual
- JOHB-SMP3 Software Cross-Reference Table
- GA501 Modbus TCP/IP Technical Manual
- GA501 BACnet/IP Technical Manual
- GA501 MECHATROLINK-4 Technical Manual
- Tech Manual
- Quick Start Guide
- + 5 more on the official site
2D drawings
ECAD / configuration files
Certificates
Get a quote for a replacement
Industrial Automation Co. stocks, sources, and repairs Yaskawa parts — new, refurbished, or exchange units with warranty.
Specifications compiled from official Yaskawa product documentation. Always confirm against the datasheet for your exact unit and revision.