Technical ARC OPTeARC EWELD MST 400A-650A

SPECIFICATIONS TECHNICAL ARC OPTeARC EWELD MST 400A-650A

Specifications – amperage output	EWELD / MST
Input voltage (standard models)	400V 3 phase
Amperage range	400A,20-400A 500A,20-500A 650A,20-650A
Duty cycle @ max	400A model 400A@40% 500A model 500A@40% 650A model 650A@60%
Output @ 100% duty cycle	400 model-250A 500 model -320A 650 model -500A
Maximum no load volts (OCV)	85V
Input fuse size (D) 400V supply	20/25A – 400A 32A – 500A 32/45A- 650A
Min generator size for up to ¾ power	9KVA – 400A 13KVA – 500A 20KVA – 650A
Approx net weight	70kg – 400A 90kg – 500A 115kg – 650A

 

Approx case size all models: 310mm W x 650mm L x 530mm H (excludes exterior hardware)

*Duty cycles & inputs are quoted at 40ºC; on TIG welding, at lower temperatures duty will be higher, for MMA or MIG duty cycle reduces a little & input increases a little.

 

Introduction Technical ARC OPTeARC EWELD MST multi-process superior performance machines 400-650A

‘Invest in the best’ quality made British welding equipment. We guarantee you will be delighted!

Technical ARC OPTeARC EWELD MST 400A-650A

Technical ARC OPTeARC EWELD MST 400A-650A power sources are industrial machines made in Britain, featuring Mitsubishi hybrid chopper technology for optimal performance like inverter machines, including quick arc starts and low power consumption, but with the robustness of transformer machines and dual voltage input for easy connection to any power source.

Our OPTeARC technology offers high efficiency, significantly reducing size, weight, and input power compared to conventional machines. These machines tolerate harsh conditions like extreme temperatures, dampness, and dust, and can even be used outdoors in the rain. With simple internal construction and minimal parts, they are robust in dirty or damp workshops and remain unaffected by input supply fluctuations. Suitable for various environments, including industrial workshops, offshore, oil and gas, mobile welding, and construction sites, these machines are generator-friendly and can operate with up to 100M extension cables.

MMA stick welding / arc air gouging- CC

Super smooth welding performance on all electrode types. High OCV with hot start guarantees fast arc up even on dirty & rusty material. These weld all electrode types including cellulosic 6010 etc. A remote current control can be used to adjust the amperage up to 100m away with additional stop start of output if required. All models are also suitable for arc air gouging, see notes below on electrode sizes.

MIG/MAG welding – CV, 

Plug in a wire feed unit & you have a superb performance MIG machine. The arc is superior to conventional MIG machines with a smooth consistent arc & minimal spatter. Variable inductance control means you can tune the welding arc to give the very best welding characteristics for the job. These machines also weld gasless self shielding wire perfectly. Weld from thin sheet right up to the heaviest applications. Steel, stainless steel & aluminium etc.

TIG welding – CC,

Plug in a TIG torch & you have a DC TIG welder. Weld from 20A to max current with a smooth stable arc. Lift arc technology means no HF interference so safe for use on vehicles etc. The TIG torch can be a simple gas valve type for basic lift TIG, or our switched type which starts & stops the arc from the micro switch, Ideal for stainless steel, mild steel etc, also the torch polarity can also be reversed to weld thin aluminium up to 3mm.

EWELD MST functions & features – Technical ARC OPTeARC EWELD MST 400A-650A

Functions	OPTeARC EWELD MST
Superior welding performance on MMA (stick)	✓
All electrode capability including celulosic	✓
Built in hot start circuit for instant arc up of electrodes	✓
Infinite variable control of welding power.	✓
Anti-stick circuit cuts power if electrode sticks for easy release.	✓
Digital ammeter for EN1090 & other QC standards	✓
Arc air gouging capability*	✓
Remote current control socket ready to accept remote devices.	✓
MMA variable Arc force function.	✓
Lift ARC TIG function for perfect starts on DC TIG.	✓
MIG/MAG welding function with super smooth arc & variable inductance.	✓
24V output & remote weld volts for MIG wire feeder	✓

*For arc air gouging (CAC) the maximum recomended size of electrode is 6mm for 400A, 8mm for 500A & 10mm for 650A

Standard supply, options & accessories – Technical ARC OPTeARC EWELD MST 400A-650A

Standard supply for all models; 400V 3phase input, 3M mains input lead, 3M work lead, blue panels.

Options include; different input voltage, validation for EN1090, TIG HF functions & gas solenoid built in.

Exterior hardware options, lifting eyes, under carriage (wheels & casters), pull handle.

Accessories include; Dây dẫn & giá đỡ điện cực, vali cấp dây MIG loại 24V, vali cấp dây MIG nội tuyến (ngang qua vòng cung), đèn pin MIG, tùy chọn đèn pin TIG, bộ điều khiển từ xa, bàn đạp chân có chức năng dừng/khởi động & amps biến thiên,