Miller Electric

Engine-Driven

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Choose
the Right Diesel
Engine Drive

Bobcat™
250 Diesel

Trailblazer®
325 Diesel

Big Blue® 400 Pro

Big Blue®
500 Pro

All models are EPA
Tier 4 Final compliant

  • Compact
  • Lightest weight
  • Lowest price point

  • Compact
  • Lightweight
  • Unbeatable arc performance

  • Low Speed
  • Most Fuel Efficient
  • Very Quiet
  • Unbeatable arc performance

  • Low Speed
  • Powerful
  • Quiet
  • Unbeatable arc performance
PRODUCT DESCRIPTION
Rugged, compact and lightweight diesel engine drive is great for Stick and Flux Cored welding and is the lowest priced diesel welder/generator.
Compact, lightweight, unbeatable arc performance, and the two-generator system make this perfect for construction (pipe and structural), maintenance/repair operations and fabrication.
Designed with the professional in mind, the Big Blue 400 is the best for ease of use, reliability and fuel economy
Clean, quiet, Multiprocess machine delivers up to 500 amps of welding power with an EPA Tier 4 Final compliant engine ideal for heavy-use
WELD PERFORMANCE
Stick Very Good Excellent Excellent Excellent
MIG
Wire (Solid/FCAW), Steel
Very Good Excellent Excellent Excellent
MIG
Wire, Aluminum w/Spool Gun
Good Excellent Excellent Excellent
TIG DC, Steel Very Good Excellent Excellent Excellent
TIG AC, Aluminum w/H.F.* Fair Not Available Not Available Not Available
Carbon Arc Gouging (Rated, Capable of) 3/16 in 3/16 in, 1/4 in 3/16 in, 1/4 in 3/8 in
Amperage/Voltage Range 40-275 A, 17-28 V 10-325 A, 10-35 V 20-400 A, 14-40 V 20-500 A, 14-40 V
KEY FEATURES
Standard Generator Power
11,000 Watts
12,000 Watts
12,000 Watts
21,000 Watts
Optional Generator Power

Sound level (Fully Loaded)

80 dB 75 dB 71.2 dB 78.3 dB
Weight 638 lb 620 lb 950 lb 1800 lb
Size
(H x W x D in inches without exhaust track)
28 x 20 x 45.4 in
28 x 20 x 45.4 in
32 x 26.5 x 56 in
47 x 28.5 x 69.5 in
Engine Speed (Idle/High)
2400/3600 RPM
2400/3600 RPM
1500/1800 RPM
1350/1800 RPM
Weld Meters
Not Available
Digital — Preset and Weld Displays
Digital — Preset and Weld Displays
Digital weld displays and electronic engine display

*High Frequency Arc Starter and Stabilizer

 
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