Item

Dia.

 

Part

Description

 

No.

Mkgs.

 

No.

Quantity

 

 

 

 

Figure 10-2. Panel, Front w/Components (Fig 10-1 Item 54)

 

 

 

 

 

 

 

. . . 1 . . . .

. . . . . . .

. .

187 593 . .

PANEL, front

. . . 1

. . . 2 . . . R3,VR1

. .

046 819 . .

SUPPRESSOR

. . . 1

. . . 3 . . . . . S1 . .

. .

187 190 . .

SWITCH, changeover

. . . 1

. . . 4 . . . .

. . . . . . .

. .

187 189 . .

BRACKET, shunt mtg

. . . 1

. . . 5 . . . .

. . . . . . .

. .

030 080 . .

SHUNT, meter 50MV 400A

. . . 1

. . . 6 . . . . . R1 . .

. .

072 623 . .

POTENTIOMETER

. . . 1

. . . 7 . . . . . S6 . .

. .

088 409 . .

SWITCH, toggle DPDT 15A 125VAC

. . . 1

. . . 8 . . . .

PC1 . . .

184 731 . .

MODULE, pull to idle 4 pin

. . . 1

. . . 9 . . . .

PC4 . . .

147 554 . .

CIRCUIT CARD ASSEMBLY, connector/receptacle

. . . 1

. . . 10 . . . .

. S4 . .

. . .

011 609 . .

SWITCH, tgl SPDT 15A 125V

. . . 1

. . . 11 . . . .

. S3 . .

. . .

011 611 . .

SWITCH, tgl DPDT 15A 125V

. . . 1

. . . 12 . . . .

CB5,6 . .

083 432 . .

CIRCUIT BREAKER, man reset 1P 10A 250V

. . . 2

. . . 13 . . . .

. S2 . .

. .

176 606 . .

SWITCH, ign 4posn

. . . 1

. . . . . . . . . .

PLG8 .

. .

177 859 . .

CONNECTOR

. . . 1

. . . 14 . . .

RC2,3 . .

141 432 . .

RECEPTACLE, str dx grd 2P3W 20A 125VAC

. . . 2

. . . . . . . . . GFCI2,3

♦

147 939 . .

RECEPTACLE, str dx grd 2P3W 15A 125VAC GFCI

. . . 2

. . . 15 . . . .

PC3 . . .

148 021 . .

CIRCUIT CARD, filter HF

. . . 1

. . . 16 . . . .

CB1,2

. . . 117 501 . .

CIRCUIT BREAKER, man reset 1P 40A 250V

. . . 2

. . . 17 . . . .

CB3,4 . .

093 996 . .

CIRCUIT BREAKER, man reset 1P 20A 250V

. . . 4

. . . 18 . . . .

PC5 . . .

148 030 . .

CIRCUIT CARD, filter HF

. . . 1

. . . 19 . . . .

. . . . . . .

. .

073 756 . .

STAND OFF, 6-32 x .625 lg

. . . 4

. . . 20 . . . .

. . . . . . .

. .

182 870 . .

CONTROL, push pull

. . . 1

. . . 21 . . . .

. . . . . . .

. . .

119 014 . .

LEVER, switch black

. . . 1

. . . 22 . . . .

. . . . . . .

. .

099 255 . .

TERMINAL, pwr output

. . . 3

. . . 23 . . . .

. . . . . . .

. .

083 030 . .

STUD, brs .250-20 x 1.750

. . . 1

. . . 24 . . . .

. . . . . . .

. .

010 915 . .

WASHER, flat brs .250

. . . 2

. . . 25 . . . .

. . . . . . .

. .

601 836 . .

NUT, brs hex jam .250-20

. . . 3

. . . 26 . . . .

. . . . . . .

. .

188 039 . .

COVER, receptacle with gasket

. . . 1

. . . 27 . . . .

. . . . . . .

. .

159 921 . .

BEZEL

. . . 1

. . . 28 . . . .

RC1 . . .

182 954 . .

RECEPTACLE, str 3P4W 50A 125/250VAC

. . . 1

. . . . . . . . . .

. . . . . . .

. . .

119 172 . .

PLUG, st 50A 125/250V

. . . 1

. . . 29 . . . .

. . . . . . .

. .

170 391 . .

CAP, dust connector 9760-20 protector

. . . 1

. . . 30 . . . .

. HM . .

. .

145 247 . .

METER, hour 10-32VDC

. . . 1

. . . 31 . . . .

. . . . . . .

. .

021 385 . .

BOOT, toggle switch lever

. . . 3

. . . 32 . . . .

. . . . . . .

. .

097 924 . .

KNOB, pointer

. . . 1

. . . 33 . . . .

. . . . . . .

. .

072 590 . .

LOCK, shaft .375-32 x .250dia shaft

. . . 1

. . . 34 . . . .

. . . . . . .

. . .

115 493 . .

HANDLE, range switch

. . . 1

. . . 35 . . . .

. . . . . . .

. . .

. . . . . . . . . .

NAMEPLATE, (order by model and serial number)

. . . 1

♦ Optional

 

 

 

 

 

To maintain the factory original performance of your Replacement Parts. Model and serial number required

equipment, use only Manufacturer’s Suggested when ordering parts from your local distributor.

OM-486 Page 42

Page 45 Page 47
Page 46
Image 46
Miller Electric 251 NT manual Panel, Front w/Components -1 Item
Page 45 Page 47

251 NT specifications

The Miller Electric 251 NT is a highly regarded multi-process welding machine known for its versatility and advanced features, making it an ideal choice for professionals in various industries. With its robust construction and user-friendly interface, the 251 NT provides an efficient solution for MIG, TIG, and Stick welding applications.

One of the main features of the Miller Electric 251 NT is its impressive output range, which allows for welding on a variety of materials and thicknesses. It delivers up to 250 amps of power, enabling users to tackle both thin and thick metals with ease. Additionally, the machine is equipped with an Auto-Set feature, which automatically adjusts the welding settings according to the material thickness and type. This eliminates the guesswork, significantly enhancing productivity and reducing setup time.

Another noteworthy aspect of the Miller Electric 251 NT is its inverter technology. This advanced technology provides a compact, lightweight design without compromising performance. Inverter technology allows for greater energy efficiency, resulting in reduced operational costs over time. The 251 NT also features a Duty Cycle of 60% at 250 amps, which means it can handle demanding tasks while maintaining optimal performance.

The Miller Electric 251 NT is designed with user convenience in mind. The intuitive digital display offers clear visibility of the settings, allowing welders to make quick adjustments. Furthermore, the machine includes a built-in memory function to store frequently used parameters, enhancing workflow efficiency.

Safety is a key component of the 251 NT's design. It comes equipped with various safety features, including overload protection and a thermal overload warning system. These features ensure that the machine operates within safe limits, minimizing the risk of damage and ensuring longevity.

In terms of portability, the Miller Electric 251 NT's lightweight design and integrated handle make it easy to transport between job sites. The durable housing protects the internal components, making it suitable for rigorous use in demanding environments.

Overall, the Miller Electric 251 NT offers a combination of power, flexibility, and ease of use, making it a top choice for welders looking to enhance their capabilities across multiple welding processes. Whether in a professional shop or on a construction site, the 251 NT stands out as a reliable and efficient welding solution.
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