To help engineers and procurement professionals quickly locate and accurately purchase items, we have compiled a detailed list of all core components, part numbers, and specifications for the OTC Daihen EP400 Welding Machine. This list contains 63 spare parts data entries, and we have professionally corrected any unit code garbles or naming typos from the original factory materials.
1. Real-Time Quick Search Table for EP400 Parts
You can directly input the Part No. (Order No.), Symbol, or Part Name in the search box below, and the table will automatically filter the required parts for you:
| Part No. (OTC Order No.) | Symbol | Part Name | Specification |
|---|---|---|---|
| 4614-0848 | NF | Circuit Breaker | DZ47-60D40A |
| 4600-366 | PL1 | Indicator Light | N46010A7KW-01ROHS |
| 100-1393 | DR1 | Bridge Rectifier | MDS75-16 |
| 100-2056 | DR2-3 | Fast Recovery Diode Module | MMF300Y060DK1 |
| 4531-505 | DR5 | Diode | S2L60 |
| 100-2043 | DR6 | Fast Recovery Diode Module | MMF2X100J060D |
| 100-0667 | TR1-2 | IGBT Module | MMG75SR120B |
| 100-0851 | CT1 | Current Transformer | QW-W00050 |
| 100-0956 | CT2 | Hall Sensor | CS-40GEH |
| P30191B00 | T1 | Inverter Transformer | P30191B00 |
| 4810-916 | T2 | Auxiliary Transformer | W-W02936 |
| P30191D00 | L1 | Output Reactor | P30191D00 |
| P30191C00 | L2 | Output Reactor | P30191C00 |
| P30191U00 | L3 | Input Reactor | P30191U00 |
| QW-W00155 | L4 | Ferrite Core | QW-W00155 |
| 4739-543 | L5 | Ferrite Core | E04RA310190100 |
| 100-0618 | L6 | Ferrite Core | HM2AT4815 |
| 100-0931 | THP1 | Thermal Switch | KSD301-PM6-80/3-NC(#250) |
| 100-0931 | THP2 | Thermal Switch | KSD301-PM6-80/3-NC(#250) |
| 100-0933 | FM1 | Fan / Blower | 200FZY3-S |
| 100-0938 | SH | Shunt | 60mV400A |
| 6100-052 | R1〜4 | Varistor | TND14V-911KB0LLAA0 |
| 100-0935 | R5〜8 | Carbon Film Resistor | CFS1/4CT52A102J |
| 100-1403 | R9,10 | Non-Inductive Cement Resistor | RX27N4V-30W-5R1J |
| 4509-905 | R11 | Cement Resistor | MHR20A513J1 |
| 4509-916 | R12 | Cement Resistor | T20SH 2.2ΩJ |
| 100-0935 | R13 | Carbon Film Resistor | CFS1/4CT52A102J |
| 4501-039 | R15,16 | Potentiometer | RV24YN20SB 5kΩ |
| 100-1432 | R17 | Aluminum Housed Resistor | RE50W-470R-5% |
| 100-1953 | C1a,b | Film Capacitor | MFD-DA01DC1200V-20 |
| 100-1290 | C2 | Film Capacitor | CBB80-2000V-473J |
| 100-1396 | C3,4 | Film Capacitor | CBB81-2000V-223J |
| 100-1397 | C5 | Film Capacitor | MLC-LL500MF800VDC50A |
| 100-0227 | C6 | Film Capacitor | 0.47μF 50V |
| 4511-512 | C7 | Electrolytic Capacitor | LQA2C222MSEEZ0 |
| 100-1435 | CON1 | Socket | DPC25-10BP |
| 4730-010 | CON2 | Socket | DPC25-6BP |
| K5791B00 | DCV1 | Switching Power Supply | K5791B00 |
| K5791C00 | DCV2 | Switching Power Supply | K5791C00 |
| K3904B00 | TM1 | Input Terminal Block | K3904B00 |
| K3904C00 | — | Input Terminal Block Cover | K3904C00 |
| 100-1292 | TM2 | Output Terminal (+) | EDZ95b(R) |
| 100-1292 | TM3 | Output Terminal (+) | EDZ95b(R) |
| 100-1091 | TM4 | Output Terminal (-) | EDZ95b(B) |
| 100-2057 | TM5 | 12P Terminal Block | TB-1512 |
| 4739-33 | TM6 | Binding Post | T-375 12mm(BLACK) |
| P30099P00 | PCB1 | Printed Circuit Board (PCB) | P30099P00 |
| P30191S00 | PCB2 | Printed Circuit Board (PCB) | P30191S00 |
| P30086Q00 | PCB3 | Printed Circuit Board (PCB) | P30086Q00 |
| P30087Q00 | PCB4 | Printed Circuit Board (PCB) | P30087Q00 |
| P30087T00 | PCB5 | Printed Circuit Board (PCB) | P30087T00 |
| P30086T00 | PCB6 | Printed Circuit Board (PCB) | P30086T00 |
| P30086R00 | PCB7 | Printed Circuit Board (PCB) | P30086R00 |
| P30110X00 | PCB8 | Printed Circuit Board (PCB) | P30110X00 |
| P30191G05 | ① | Top Panel | P30191G05 |
| P30191G03, G04 | ② | Side Panel | P30191G03, G04 |
| P30191W02 | ③ | Operation Panel | P30191W02 |
| W-W02814 | ④ | Rubber Cap | 4739-476 |
| K-10022RSB | ⑤ | Knob | 4735-038 |
| K-10022CSBL | ⑥ | Knob Cap | 4735-039 |
| K3904B00 | ⑦ | Input Terminal Block | K3904B00 |
| K3904C00 | ⑧ | Input Terminal Block Cover | K3904C00 |
| 100-0945 | ⑨ | Rubber Plug with Film | QW-W00016 |
Note: Items marked with “—” or circled numbers in the “Symbol” column indicate housing structural parts or accessories with no specifically designated independent symbols. Please purchase directly based on the Part No. (OTC Order No.).
2. Purchasing Original Parts & Technical Support
If you need to purchase electronic components, control boards, or housing structure parts inside the EP400 welding machine, please directly provide us with the equipment nameplate and the corresponding Part No. (Order No.). As an authorized distributor, we promise to provide 100% genuine original parts with professional technical guidance from our maintenance engineers to ensure perfect compatibility.
Contact Us for Inquiries & Support
- Global Sales & Tech Support: International Sales Team
- 24/7 Service Hotline (WhatsApp & WeChat Same No.): +86-180-9663-1656
- Official Email: ahojotc@gmail.com
Please take a screenshot or copy the "Part No. (Order No.)" you need and send it to us via WhatsApp or Email. We will provide you with real-time pricing and inventory status as quickly as possible!


