Big Blue® 450 Duo CST™

The Big Blue 450 Duo CST is a rugged, compact, fuel‑efficient diesel engine‑driven welder that delivers two superior arcs in one economical package.

Key Features

• Quiet operation at 72.2 dB (23 ft) for better site communication
• Adaptive Hot Start™ for stick arc starts to prevent sticking
• High‑efficiency three‑phase rotating‑field auxiliary power unit
• Remote amperage control via 14‑pin receptacle (including wireless options)
• Multi‑function fuel gauge with oil‑change reminders and engine protection
• Heavy‑duty low‑speed Mitsubishi S4L2 industrial diesel engine (24.7 hp)
• Vandalism lockout kit with lockable hinged steel panel
• 6010 stick electrode capability for superior stick performance

Specifications

• Amperage Range: 5 A – 450 A
• Fuel Tank Size: 10 gal (37.8 L) diesel
• Horsepower: 24.7 hp
• Weight: 1064 lb
• Dimensions (W × H × L): 58 in × 34 in × 28 in
• Sound Rating: 71 dB (96 Lwa)
• Portability: Lift eye (standard) and optional trailer
• Warranty: 3 years (Miller True Blue Warranty)

Applications

• Fabrication
• Field welding
• Construction & fabrication
• Pipe work