Welcome To Authorized Distributor of OTC Daihen Official Website!
Language：
∷
∷
∷
This guide provides the detailed parts breakdown for the OTC Daihen W400 welding machine. All items listed are genuine OTC Daihen spare parts, with model numbers, specifications, and quantities for easy identification and ordering.
| No. | Symbol | Part Name | Model / Part Number | Specification | Qty |
|---|---|---|---|---|---|
| 1 | NF | Air switch | 100-1568 | CA3-B0-24-640-41D-C | 1 |
| 2 | PL1 | Indicator light | 100-0171 | N46010A7KW-01 | 1 |
| 3 | DR1 | Rectifier bridge | 100-1938 | PGH150N16 | 1 |
| 4 | DR2~9 | Rectifier bridge | 4531-119 | DSEI2X101-06A | 8 |
| 5 | DR10,11 | Rectifier bridge | 4531-119 | DSEI2X101-06A | 2 |
| 6 | DR12 | Rectifier module | 4531-119 | DSEI2X101-06A | 1 |
| 7 | DR15 | Rectifier bridge | 4531-120 | D5SB60 | 1 |
| 8 | DR19,20 | Rectifier module | 4531-119 | DSEI2X101-06A | 2 |
| 9 | DR21,22 | Rectifier module | 4531-119 | DSEI2X101-06A | 2 |
| 10 | TR1~4 | IGBT module | 100-1750 | CM300DU-12NFH | 4 |
| 11 | TR5~8 | IGBT module | 4534-531 | CM400DY-12NF | 4 |
| 12 | TR11 | IGBT module | 100-2033 | FZ600R12KP4 | 1 |
| 13 | TR12 | IGBT module | 4534-402 | 1MBH50D-060 | 1 |
| 14 | CT1 | Current transformer | 4810-030 | W-W03029 | 1 |
| 15 | CT2 | Hall element | 100-0956 | CS-40GEH | 1 |
| 16 | T1 | Inverter transformer | P30205B00 | P30205B00 | 1 |
| 17 | T2 | Auxiliary transformer | W-W03674 | W-W03674 | 1 |
| 18 | L1 | Input reactor | P30205L00 | P30205L00 | 1 |
| 19 | L2 | DC reactor | P30205C00 | P30205C00 | 1 |
| 20 | L3 | Ferrite core | 100-1950 | TW70W (R402715) | 1 |
| 21 | L4,5 | Ferrite core | 4739-543 | E04RA310190100 | 2 |
| 22 | L6 | Ferrite core | 100-0620 | SN-200R 23.5×9.5×12.6 | 1 |
| 23 | THP1 | Temperature control switch | 4614-057 | 67L080 | 1 |
| 24 | THP2 | Temperature control switch | 4614-051 | 67L090 | 1 |
| 25 | THP3 | Temperature control switch | — | US602AXTTL130°C | 1 |
| 26 | THP4 | Temperature control switch | — | US602AXTTL100°C | 1 |
| 27 | FM1~3 | Fan | 100-1429 | 9WV1224P1H003 | 3 |
| 28 | FM4 | Fan | 100-1825 | 9G1224E1D07 | 1 |
| 29 | SH | Shunt | 4403-132 | SH600A/60mV | 1 |
| 30 | R1~4 | Varistor | 6100-052 | TND14V-911KB0LLAA0 | 4 |
| 31 | R5~10 | Carbon film resistor | 100-0234 | RD20S 1kΩJ | 6 |
| 32 | R12,13 | Metal film resistor | 100-1430 | RPM200Z 5Ω | 2 |
| 33 | R18 | Thermistor | 100-0662 | EC2F103A2-40113 | 1 |
| 34 | R19a,b | Metal film resistor | 100-1432 | FHN50 471J/R0 | 2 |
| 35 | R20,21 | Carbon film resistor | 100-0234 | RD20S 1kΩJ | 2 |
| 36 | R22 | Wire wound resistor | 100-1571 | CS1P 100ΩJ | 1 |
| 37 | R23 | Cement resistor | 4509-918 | 40SH 200ΩJ | 1 |
| 38 | R24 | Carbon film resistor | 100-0234 | RD20S 1kΩJ | 1 |
| 39 | R28,29 | Metal oxide film resistor | 100-1949 | M0S1CT52A104J | 2 |
| 40 | R33,34 | Metal film resistor | — | RH220 10ΩJ | 2 |
| 41 | R35 | Carbon film resistor | 100-0234 | RD20S 1kΩJ | 1 |
| 42 | R36 | Metal film resistor | 100-1430 | RPM200Z 5Ω | 1 |
| 43 | R43 | Carbon film resistor | 4508-317 | RD1/2S 3kΩJ | 1 |
| 44 | R50~57 | Carbon film resistor | 4508-317 | RD1/2S 3kΩJ | 8 |
| 45 | R65 | Metal oxide film resistor | 4509-109 | RS1B 51kΩ | 1 |
| 46 | R66,67 | Metal film resistor | 100-1430 | RPM200Z 5Ω | 2 |
| 47 | C1~4 | Ceramic capacitor | 100-1433 | DEBE33D222ZA2B | 4 |
| 48 | C7 | Film capacitor | 4518-526 | EM351200D0BA1HP | 1 |
| 49 | C8 | Film capacitor | — | FHC(180)2000V223J | 1 |
| 50 | C9 | Film capacitor | 100-1572 | FHC(180)2000V103J | 1 |
| 51 | C10 | Film capacitor | 100-0227 | 0.47µF 50V | 1 |
| 52 | C12,13 | Film capacitor | 100-1871 | US20X223JBASA | 2 |
| 53 | C23~26 | Film capacitor | — | US63Y224JAASA | 4 |
| 54 | CON1 | Socket | 100-1435 | DPC25-10BP | 1 |
| 55 | CON2 | Socket | 4730-010 | DPC25-6BP | 1 |
| 56 | PS1 | Pressure switch | 4255-016 | W-W00032 | 1 |
| 57 | TM5 | Terminal block | 4739-141 | T-3 (black) | 1 |
| 58 | DCV1 | Constant voltage power supply | K5791B00 | K5791B00 | 1 |
| 59 | DCV2 | Constant voltage power supply | K5791C00 | K5791C00 | 1 |
| 60 | PCB1 | Circuit board | P30205P | P30205P00 | 1 |
| 61 | — | Relay | 4341-206 | G6A-274P DC24V | 1 |
| 62 | PCB2 | Circuit board | P30086R | P30086R00 | 1 |
| 63 | — | Knob | 100-1421 | EVEGA1F2524B | 1 |
| 64 | PCB3 | Circuit board | P30086Q | P30086Q00 | 1 |
| 65 | PCB4 | Circuit board | P30087Q | P30087Q00 | 1 |
| 66 | PCB5 | Circuit board | P30086V | P30086V00 | 1 |
| 67 | PCB6 | Circuit board | P30086V | P30086V00 | 1 |
| 68 | PCB7 | Circuit board | P30205M | P30205M00 | 1 |
| 69 | PCB8 | Circuit board | P30086T | P30086T00 | 1 |
| 70 | PCB9 | Circuit board | P30087T | P30087T00 | 1 |
| 71 | PCB10 | Circuit board | P30086S | P30086S00 | 1 |
| 72 | PCB11 | Circuit board | P30205V | P30205V00 | 1 |
| 73 | PCB12 | Circuit board | P30205S | P30205S00 | 1 |
| 74 | (1) | Cover | P30086G01 | P30086G01 | 1 |
| 75 | (2) | Cover plate | P30086G02 | P30086G02 | 1 |
| 76 | (3) | Operation panel | P30226W02 | P30226W02 | 1 |
| 77 | (4) | Cover | W-W03636 | W-W03636 | 1 |
| 78 | (5) | Socket | 4734-007 | DIXBE50/70 | 1 |
| 79 | (6) | Handle cover | 100-1736 | 899-35054-001 | 1 |
| 80 | (7) | Cover | 4739-476 | W-W02814 | 1 |
| 81 | (8) | Knob | 4735-038 | K-100 22RSB | 1 |
| 82 | (9) | Cover | 4735-039 | K-100 22CSBL | 1 |
| 83 | (10) | Fixed caster | 100-2755 | 420R-C65 | 1 |
| 84 | (11) | Swivel caster | 100-2756 | 4206-C65 | 1 |
| 85 | (12) | Rubber plug with membrane | 100-0393 | BB-1187B | 1 |
All parts listed above are 100% original OTC Daihen spare parts. Our company is an OTC-designated agent, ensuring you receive authentic components for your welding machine. Whether you need a single replacement or bulk orders, we are here to help.
📞 Contact Us for Orders / Inquiries
📱 Phone / WeChat / WhatsApp:
+86-180-9663-1656
📧 Email:
ahojotc@gmail.com
* For fastest response, please contact via phone or WhatsApp. You're also welcome to connect on WeChat to exchange knowledge and information about OTC welding machines.
Company: COMPANY：Authorized Distributor of OTC Daihen
Contact person: Contact：Mr.Fang
Mobile phone: Phone：+86-18096631656
Email address: Email：15305667776@163.com
Address: Add：Room 11-704, K Xijia, No. 502, Wangjiang West Road, Hefei, Anhui, China