Processes
Stick (SMAW), MIG with wire feeder (GMAW), Flux-cored (FCAW), DC TIG (GTAW), RMD, Pulsed MIG, Air carbon arc cutting and gouging (CAC-A)
Miller Stick / Engine-Drive Support
Big Blue 400 PipePro
Pipeline-focused diesel engine-drive with Wireless Interface Control standard, downhill stick performance, MIG/FCAW support, and 400-amp output.
Stick (SMAW)MIG with wire feeder (GMAW)Flux-cored (FCAW)DC TIG (GTAW)RMDPulsed MIGAir carbon arc cutting and gouging (CAC-A)
Heavy industrial pipeline engine-drive
Welding range
CC Stick/TIG: 20 - 400 A. CV MIG/FCAW: 14 - 40 V.
Engine
Mitsubishi S4L2 diesel, 24.7 hp at 1,800 rpm
Auxiliary power
Single-phase. Peak: 12,000 W. Continuous: 10,000 W.
Weight
993 lb. (450 kg)
Class
Heavy industrial pipeline engine-drive
Machine Packages
| Stock number | Catalog package |
|---|---|
| 907805001 | Mitsubishi |
| 907805 | Mitsubishi with stainless steel |
Welding Output
- 300 A at 32 V, 100% duty cycle
- 350 A at 27 V, 100% duty cycle
- 400 A at 24 V, 100% duty cycle
Key Support Notes
- Wireless Interface Control standard
- Pipeline/downhill stick arc characteristics
- LINE-X cover
- Compact size for truck space
Accessories and Process Paths
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SuitCase Feeders
Voltage-sensing or wire-feeder path listed for supported engine-drive machines.
Open support pageArcReach Smart Feeder
Smart Feeder path for ArcReach-equipped models where catalog-listed.
Open support pageFull KVA Adapter Cord
300517 Full KVA adapter cord listed for Bobcat, Trailblazer, and Big Blue engine-drive models.
Support path pendingAmazon link: Needs verification.
Full KVA Plug Kit
119172 Single-phase 120/240 V, 50 A plug kit listed for Bobcat, Trailblazer, and Big Blue models.
Support path pendingAmazon link: Needs verification.
Protective Cover
195301 Protective cover for Big Blue 400 Pro, Big Blue 400 PipePro, and Big Blue 450 Duo CST.
Support path pendingAmazon link: Needs verification.
HWY-Mid Frame Trailer
Trailer path listed for Bobcat, Trailblazer, Big Blue 400 Pro, Big Blue 400 PipePro, and Big Blue 450 Duo CST.
Support path pendingDimensions
H: 32 in. / 37 in. to top of exhaust, W: 26.25 in., D: 56 in.
Source: Miller Electric 2026 Full-line Catalog, catalog page 87, literature ED/5.10. Machine and accessory relationships are source-backed catalog references. Amazon purchase links stay separate and only appear after independent product verification.