ESAB Tradesmarc 151 is a compact welding power source intended for MIG/MAG welding of mild and stainless steels, aluminium and also self shielded (gasless) cored wire. It can be used both indoors and outdoors, but the enclosure class IP21 means it is designed primarily for indoor use. The Tradesmarc 151 accepts the standard 15Kg 300mm wire reel keeping it totally enclosed within the wire feed compartment. Protections against the effects of overheating is provided by a thermal protection device.