NB-KR series thyristor controlled CO2/MAG semi-automatic welding machineDetailed product description：

Characteristics and uses of thyristor controlled CO2/MAG semi-automatic welding machine:

Beyond the functionality and performance of ordinary thyristor welding machines:

1. The remote control has no single cable, which improves maneuverability and reduces the trouble of disconnection.  
2. The new design has significantly improved the dustproof performance of the welding machine, making it suitable for a wide range of application fields and workplaces.
3. The conversion function with separate adjustment of current and voltage/simple unified adjustment can be easily used by both beginners and skilled users.
This machine is a split type structure, mainly composed of three parts: welding power supply, wire feeder, and welding gun. The welding power supply is mainly composed of AC contactors, cooling fans, three-phase transformers, thyristor rectifier modules, balancing reactors, control transformers, main control circuit boards, and filtering reactors.

Main technical parameters

Data | Model	NB-200KR	NB-350KR	NB-500KR
Rated input voltage (V)	AC 3-phase 380
Frequency (Hz)	50/60 dual-purpose (controlled by P board conversion)
Rated input capacity (KVA)	eight point two	eighteen point eight	thirty-two point five
Maximum no-load voltage (V)	thirty-seven	fifty-two	sixty-six
Output current range (A)	50-200	60-350	60-500
Output voltage range (V)	16.5-24	17-31.5	17-39
Rated load duration rate (%)	sixty	fifty	sixty
Applicable welding wire diameter (mm)	Low carbon steel solid core welding wire with diameters of 0.8, 1.0, and 1.2		Low carbon steel solid core welding wire φ1.2、φ1.4、φ1.6
	Flux cored welding wire with diameters of 1.0 and 1.2		Flux-cored wire φ1.2、φ1.4、φ1.6
Dimensions (mm) (Length x Width x Height)	380×700×750		435×675×760
Weight (kg)	eighty-eight	one hundred and sixteen	one hundred and fifty-six