Miller Big Blue 450 Duo CST

The Big Blue 450 Duo CST is a rugged, compact, fuel efficient diesel engine-driven welder that provides 2 superior arcs in one economical package.

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1200+ products
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Description
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PROCESSES

Air Carbon Arc Cutting and Gouging (CAC-A)
Stick (SMAW)
TIG DC (GTAW-DC)

GENERAL SPECIFICATIONS

TitleBig Blue® 450 Duo CST™
Industries InterestsConstruction and Fabrication
Pipeline
Amperage5 A – 450 A
Weldable MetalsStainless Steel
Steel
Rated Carbon Diameter3/16 in (4.8 mm)
Current TypeDC
Max Open Circuit Voltage77 VDC
PortabilityLift Eye (Standard)
Trailer (Optional)
Cold Weather Starting AidsGlow Plugs
Engine BrandMitsubishi
Engine ComplianceT4F
Engine Idle Speed1800 RPM
Engine Weld Speed1800 RPM
Fuel Tank Size10 gal. (37.8 L)
Fuel TypeDiesel
Horsepower24.7 hp
Weld OutputCC
Rated OutputSeparate (Dual Outputs) 175 A at 27 V, 100% duty cycle,Paralleled (Single Output) 350 A at 27 V, 100% duty cycle
Single Phase Auxiliary Continuous Power8900 W
Single Phase Auxiliary Peak Power10500 W
Sound Rating71 dB (96 Lwa)
ApplicationsFabrication
Field Welding
Net Width58 in
Net Height34 in
Net Length28 in
Net Weight1064 lbs
Warranty3 Years
Miller’s True Blue Warranty
Quiet Operation
At just 72.2 decibels at 23 feet (7 m), it’s quieter than most single-operator models, improving jobsite communication and safety.   Learn More
Adaptive Hot Start™ For Stick Arc Starts
Automatically increases the output of a weld should the start require it.  Prevents the electrode from sticking and creating an inclusion.

Superior Stick Arc Performance
Even on the difficult-to-run electrodes like E6010   Learn More
High Efficiency
Three-Phase, rotating-field auxiliary power unit requires less fuel and horsepower to operate.   Learn More
Remote Amperage Control
Provided through 14-pin receptacle on front of the machine.  This permits use of standard and wireless remote amperage control devices.   Learn More
Multi-function Fuel Gauge
Displays fuel level and engine hours, and can be customized to set oil change interval reminders. In the case of high coolant temperature, low oil pressure, or low fuel level, the engine will shut down to prevent damage, or make restarting easier.

Heavy-Duty Low-Speed Mitsubishi S4L2 Industrial Diesel Engine
Used in industrial applications around the world, the S4L2 is designed to run 10,000 hours before major overhaul. Backed by worldwide support and service.
Vandalism Lockout Kit
Lockable hinged steel panel protects front control panels and ignition switch.

NOT INCLUDED

  • Weld leads