Miller Big Blue® 450 Duo CST™ (Mitsubishi) Diesel Welder 907866

The Miller Big Blue® 450 Duo CST™ (Mitsubishi) combines the robust frame of a Miller diesel welder with the proven welding arc quality of twin CST 282 stick/TIG welders. The result is a rugged, compact, fuel-efficient diesel welder/generator that provides 2 superior arcs in one economical package.  Each of the Duo CST's independent arcs of up to 280 amps each is ideal for stick electrodes up to 3/16 inch diameter.  Lift-Arc™ DC TIG is standard, for the welding of steel and stainless steel pipe and plate. 

The Big Blue 450 Duo CST has superior stick welding arc characteristics and has specific settings to optimize performance when using XX10 and XX18 electrodes. The Duo CST also supplies 10,500 peak watts of single phase 120/240 volt generator power.  It features a Tier 4F compliant Mitsubishi S4L2 diesel engine that produces 24.7 HP at 1,800 RPM.  The engine itself can operate up to 10,000 hours without a major overhaul.



Processes

Stick Welding (SMAW)

DC TIG Welding (GTAW) Lift Arc

Applications

Heavy Construction

Structural Steel Work

Maintenance and Repair

Process Plant Piping

Sheet Metal

Features

Superior arc quality.
Proven CST 282 Stick/TIG welding performance maximizes productivity and minimizes rework. The process selector knob automatically sets the proper dig setting on difficult Stick electrodes, like E6010, for superior performance.

Dual operation.
The Big Blue 450 Duo CST has two separate outputs powered by one low-speed diesel engine, so two operators can use it at the same time for increased efficiency and productivity.

Efficient design.
With two standard CST 282 conveniently packaged in one compact case, the fuel-efficient Big Blue 450 Duo CST is the right size and weight for your operation.

Vandalism lockout kit (steel panel flipped up on main product image)
Lockable hinged steel panel protects front control panel and ignition switch.

Quiet operation
At just 72 dB at full load and 71.3 dB at no load, the Big Blue 450 Duo CST produces less noise, resulting in easier communication and a safer jobsite.

Exceptional fuel efficiency.
Less fuel is required to operate, resulting in fuel savings of up to 35 percent. The more you use it, the more you save.

Easy to use.
Simple interface eliminates guesswork and decreases training time. With minimum switch selections to set, you get maximum control and performance.

Tier 4F compliant.
Ecologically friendly welder/ generator runs clean, meeting strict Tier 4F requirements and minimizing your impact on the environment.

Renowned reliability.
Every component is engineered and built for ultimate reliability, resulting in less downtime and more productivity.

Built tough.
Miller rates the Big Blue 450 Duo CST output at 122° F/50° C to ensure top performance in the most extreme conditions.

Mitsubishi S4L2 diesel engine.
Used in industrial applications around the world, the S4L2 is designed to run 10,000 hours before major overhaul.

Wireless hand remote control compatible.
This industry exclusive allows you to extend your remote welding control range to 300 feet for jobsite mobility and operator safety.

Adaptive Hot Start™ for Stick arc starts
Automatically increases the output amperage at the start of a weld should the start require it. Prevents the electrode from sticking and creating an inclusion.

Lift-Arc™ start
Provides TIG arc starting without the use of high frequency.

Meter maintenance displays:
Hour meter function
Oil change interval
High coolant temperature and low oil pressure shutdowns
Low fuel shutdown - engine shuts down before system runs out of fuel, making restarts easy.

Thermal overload protection
Prevents machine damage if the duty cycle is exceeded or airflow is blocked.

High efficiency. 3-phase, rotating-field generator requires less fuel and horsepower to operate.