Miller Big Blue 500X Pro Deutz Diesel Engine with ArcReach Miller MR907788-1

Miller Big Blue 500X Pro Deutz Diesel Engine with ArcReach Miller MR907788-1

Product Overview

The Miller Big Blue® 500X Pro with ArcReach® welding technology is a powerful, professional-grade engine-driven welder generator designed for high-output welding applications and demanding jobsite conditions. ArcReach® technology significantly reduces non-value-added time by allowing operators to adjust welding parameters directly at the arc—maximizing arc-on time, improving weld quality, and enhancing jobsite safety.

Built with durability and performance in mind, the Big Blue 500X Pro delivers reliable power, advanced arc control, and rugged construction for industrial and field welding environments.

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Key Features & Benefits

ArcReach® Welding Technology

Enables remote adjustment of welding parameters at the point of use, minimizing trips to the power source while increasing productivity, weld consistency, and operator safety.

Auto Remote Sense™

Automatically detects when a remote control is connected to the 14-pin receptacle, eliminating confusion between remote and panel control operation.

HD Powder Coat Finish

Zinc-rich primer combined with a heavy-duty powder coating protects sheet metal from rust and corrosion, ensuring long-term durability in harsh environments.

Infinite Arc Control

Allows precise tuning of arc characteristics for Stick, TIG, MIG, and FCAW welding, delivering optimal performance across a wide range of applications.

Lift-Arc™ TIG with Auto Crater & Auto Stop

Provides smooth TIG arc starts without high frequency. Auto Crater and Auto Stop functions help reduce tungsten and workpiece contamination while improving weld quality.

Thermal Overload Protection

Protects the machine from damage by automatically shutting down if duty cycle limits are exceeded or airflow is restricted.

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Standard Features

• ArcReach® capability

• Digital preset weld meters

• Automatic idle control for improved fuel efficiency

• Cold weather starting aids

• Digital meters with SunVision™ technology for superior visibility in direct sunlight and from multiple viewing angles

• Industrial USB port for fast software updates, diagnostics, and machine performance data retrieval

• Remote oil drain for clean, convenient servicing

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Advanced Arc Control

Enhances arc stability when welding with stick and solid wires, making fine-tuning easier for difficult materials and out-of-position welding applications.

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Auxiliary Power Output*

• 1 × 415 V, 32 Amp, 3-phase socket

• 2 × 240 V, 15 Amp, single-phase sockets

• RCD protection

*Auxiliary generator power operates at 60 Hz and is intended for welding-related equipment such as grinders, drills, and floodlights. Some Australian 50 Hz equipment using induction motors (pumps, fans, air compressors, refrigeration, or air-conditioning units) may not operate correctly and could be damaged. Consult the equipment manufacturer to confirm compatibility.

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Low OCV Stick (VRD) Safety Feature

Reduces open-circuit voltage to 30 volts when the welding power source is not in use, improving operator safety without compromising arc starting performance.

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Engine & Warranty

• Heavy-duty, low-speed industrial diesel engine

• 3-Year Miller Warranty covering parts and labour

• Engine warranty provided separately by the engine manufacturer

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Part Number / SKU: MR907788-1