Issued August 2013 • Index No. DC/18.

8
®
XMT 304 CC/CV Multiprocess Welding
Power Source

Heavy Industrial Applications Processes Input Power Requires 3- or 1-Phase Power

Construction MIG (GMAW) Output Power 10 – 35 V, 5 – 400 A
Quick Shipbuilding
Railroad
Pulsed MIG (GMAW-P)
Stick (SMAW) Weight Net: 79.5 lb. (36.1 kg)
Specs Truck/Trailer Manufacturing
Fabrication
TIG (GTAW)
Flux-Cored (FCAW)
Ship: 88.6 lb. (40.2 kg)

Repair Shops Air Carbon Arc Cutting

Rental Fleets and Gouging (CAC-A)

Wind Tunnel Technology ™ protects Inverter arc control technology provides

electrical components and PC boards greater puddle control for superior 6010
from contamination. Stick electrode performance.

Fan-On-Demand™ cooling system operates Large, dual digital meters are easy to
only when needed, reducing noise, energy view and are presettable to ease setting
use and the amount of contaminants pulled weld output.
through machine.
Process selector switch reduces the
Lift-Arc™ allows TIG starting without the use number of control setup combinations
of high-frequency. Starts the arc without without reducing any features.
contaminating the weld with tungsten.
Optional 115 VAC auxiliary power provides
Line voltage compensation keeps welding 10 amps of circuit-breaker-protected power
output constant even if input power varies for water circulators, etc.
by +/-10 percent.
Pulsed MIG capabilities with optional
Adaptive Hot Start™ increases the output Optima control reduces spatter and
amperage at the start of a weld if necessary, distortion, allows better out-of-position
eliminating electrode sticking. puddle control, and provides potential
reduction of fume particle emission.
Lightweight, aerospace-grade aluminum
case offers protection with the benefit of
reduced weight.

Specifications (Subject to change without notice.)

Rated Output Voltage Amperage Max.
Input at 60% Range in Range in Open-Circuit Amps Input at Rated Load Output, 60 Hz,
Power Duty Cycle CV Mode CC Mode Voltage 208 V 230 V 400 V 460 V 575 V KVA KW Dimensions Weight
Three- 300 A at 10 – 35 V 5 – 400 A 90 VDC 33.7 30.5 17 18.9 15.2 12.2 11.6 H: 17 in. (432 mm) 79.5 lb.
Phase 32 VDC W: 12.5 in. (318 mm) (36.1 kg)
Single- 225 A at 10 – 35 V 5 – 400 A 90 VDC 52.4 47.4 — 24.5 — 11.3 7.6 D: 24 in. (610 mm)
Phase 29 VDC

Certified by Canadian Standards Association to both the Canadian and U.S. Standards.

Power source is warranted for 3 years, parts and labor.

Original main power rectified parts are warranted for 5 years.

Miller Electric Mfg. Co. Equipment Sales US and Canada MillerWelds.com

An ITW Company Phone: 866-931-9730
1635 West Spencer Street FAX: 800-637-2315
P.O. Box 1079 International Phone: 920-735-4554
Appleton, WI 54912-1079 USA International FAX: 920-735-4125
 Control Panel
1 4

Additional Features 5
2
Auto-Link® circuit automatically links the
power source to primary voltage being
applied (230/460 or 460/575 VAC, single- or
three-phase).
3 6
Ultra-tough, polycarbonate-blended cover
for control panel protects front controls
from damage. 7
Dinse-style weld disconnects provide
high-quality weld cable connections.
1. Voltmeter 5. Voltage/Amperage Adjustment Control
2. Power On/Off Switch 6. Voltage/Amperage Control Switch
3. Inductance/Dig Control 7. Process Selector Switch (Rotary Switch)
4. Ammeter

Performance Data
DUTY CYCLE CHART CC VOLT/AMP CURVE CV VOLT/AMP CURVE
500 100 100

400
3-PHASE AND 80 80
WELDING AMPERES

460 VAC 1-PHASE OPERATION

300 SMAW-MAX

60 60
250

VOLTS
VOLTS

225 230 VAC 1-PHASE OPERATION GTAW-MAX

MAX
200 40 GTAW-MIN 40
SMAW-MIN

150 0%
20 25%
20
MIN
50%
75%
100%
100 0 0
10 15 20 25 30 40 50 60 70 80 90 100 0 100 200 300 400 500 0 100 200 300 400 500
DUTY CYCLE AMPS AMPS

XMT MIGRunner Components

®

XMT ® 304 MIGRunner ™ #951 343

Comes Complete With:

XMT 304 CC/CV power source
22A wire feeder
Bernard® Q400 MIG Gun
Consumables
.035/.045-inch drive roll kit
Regulator/flow gauge with gas hose
MIGRunner Cart with cylinder rack
Bottom tray will hold optional Coolmate 3
(sold separately)

2
 Genuine Miller Accessories ®

Process Selector Control #042 872 Optima™ #043 389

Designed for use with dual wire feeders, A microprocessor-based,
applications where electrical isolation and/or multipurpose pulse control for
polarity reversing of weld current is required, both synergic MIG (wire welding
and for welding process changes. Includes or GMAW) or manual MIG
115 VAC/2-amp receptacle, two 14-pin pulsing. Use this control with the
receptacles and a 10-foot (3 m) 14-pin cord. XMT 304 CC/CV power sources
70 Series
and any Miller wire feeder,
RFCS-14 Foot Control S-74S #951 196
including automatic feeders and spool guns.
#043 554 S-74D #951 198
Includes a 25-foot (7.6 m) cord with 14-pin plug.
Heavy-duty foot current S-74DX #951 200
and contactor control. Extension Cords for Optima Heavy-duty, industrial, constant-speed 24 VAC
Includes 20-foot (6 m) #242 205 025 25 ft. (7.6 m) semiautomatic wire feeders with available digital
cord and 14-pin plug. #242 205 050 50 ft. (15 m) meters. Ideal for high-duty-cycle MIG (GMAW)
#242 205 080 80 ft. (24.3 m) and Flux-Cored (FCAW) welding. Accommodates
RHC-14 Hand Control a wide variety of wire sizes and types. Includes
#242 211 020 Bernard® Q™-Gun! See Lit. Index No. M/3.0.
Miniature hand control MIGRunner ™ Cart
for remote current #195 445 Spoolmatic® 30A
and contactor control. Small footprint #130 831
Dimensions: 4 x 4 x 3.25 and easily One-pound,
inches (102 x 102 x 82 mm). maneuverable, air-cooled spool
Includes 20-foot (6 m) cord and 14-pin plug. with cylinder rack gun that extends
low enough that the weld process
you do not have to range by adding a handy portable system for
lift bottles. small wire MIG. Rated at 200 amps at 100 percent
duty cycle. Includes 30-foot (9.1 m) cable
assembly. WC-24 Control (#137 549) required
RMLS-14 #129 337 with 14-pin receptacles.
Momentary- and maintained-contact rocker
switch for contactor control. Push forward for Wire Feeders/Guns WC-24 Weld Control
maintained contact and back for momentary #137 549
contact. Includes 20-foot (6 m) cord and Designed for use with Miller CV
14-pin plug. power sources supplying 24 VAC
and 14-pin receptacles. For use
with Spoolmatic 30A spool gun.

Coolant Systems
RCC-14 Remote Contactor and Current Control
For more information, see the Miller Coolant
#151 086
SuitCase X-TREME 8VS
® ™
#951 181 Systems literature sheet, Index No. AY/7.2.
Rotary-motion fingertip control fastens to
TIG torch using two Velcro® straps. Includes SuitCase® X-TREME™ 12VS #951 543 Coolmate™ 3
28-foot (8.5 m) cord and 14-pin plug. Lightweight, voltage-sensing wire feeder for a #043 007 115 VAC
variety of wires up to .062 inch. Holds up to an #043 008 230 VAC
8-inch (8VS) or 12-inch (12VS) spool of wire. For use with water-cooled
Operates on open-circuit voltage eliminating torches rated up to 500
the need for a control/power cord. Includes amps. Unique paddle-wheel
secondary contactor, gas valve and drive roll kit. indicator, external filter and easy-fill spout.
See Lit. Index No. M/6.41 and M/6.42.
Coolmate™ 4
RCCS-14 Remote Contactor and Current
#042 288 115 VAC
Control #043 688
For use with water-cooled
Up-and-down rotary-motion fingertip control.
torches rated up to 600
Great for applications that require a finer
amps. Tough molded
amperage control. Includes 28-foot (8.5 m)
polyethylene case with
cord and 14-pin plug.
carrying handle.
Extension Cords for Remote Controls Low-Conductivity
and 24 VAC Wire Feeders TIG Coolant #043 810
#242 208 025 25 ft. (7.6 m) SuitCase 8RC #951 186
®

SuitCase® 12RC #951 188 Sold in multiples of four

#242 208 050 50 ft. (15 m) one-gallon recyclable plastic
#242 208 080 80 ft. (24.3 m) Lightweight, modular design and flexible
enough to run a variety of wires up to 5/64-inch bottles. Miller coolants
14-pin plug to 14-pin socket. contain a base of ethylene
Note: Not for use with Optima or 60M Series. diameter. Holds up to an 8-inch (8RC) or 12-inch
(12RC) spool of wire. Operates using 14-pin glycol and deionized water to protect against
control receptacle. Includes remote voltage freezing to -37° Fahrenheit (-38° C) or boiling to
control and drive roll kit. See Lit. Index No. M/6.5. 227° Fahrenheit (108° C).

3
 Genuine Miller Accessories (Continued)
®

Note: XMT 304 power sources are equipped with Dinse-Style Connectors Extension Kits for Dinse-Style
Dinse-style connectors for secondary connections. Cable Connectors
#042 418
Dinse/Tweco® Adapter Accepts #4 to #1/0 AWG size cable. #042 419
#042 465 #042 533 Accepts #4 to #1/0 AWG size cable.
Dinse/Cam-Lok Adapter Accepts #1/0 to #2/0 AWG size cable. #042 534
#042 466 Kit includes one Dinse-style male plug which Accepts #1/0 to #2/0 AWG size cable.
One-piece adapter with attaches to the work and/or weld cables and Used to adapt or extend weld and/or work
Dinse-style male plug (to power source) on one plugs into the Dinse-style receptacles on the cables. Kit includes one male Dinse-style plug
end and female receptacle (Tweco or Cam-Lok power source. and one in-line female Dinse-style receptacle.
for weld cable connection) on other end.

Ordering Information
Power Source and Options Stock No. Description Qty. Price
® ®
XMT 304 CC/CV #903 471 208-230/460 VAC with Auto-Link
#903 471-01-1 208-230/460 VAC with Auto-Link® and Auxiliary Power
#903 472 400 VAC, 50/60 Hz with Auxiliary Power and CE
XMT® 304 MIGRunner™ Package #951 343 208-230/460 VAC with Auto-Link®
Accessories
Process Selector Control #042 872
RFCS-14 #043 554 Foot control
RHC-14 #242 211 020 Hand control
RMLS-14 #129 337 Rocker switch
RCC-14 #151 086 Fingertip control
RCCS-14 #043 688 Fingertip control
Extension Cords (For 24 VAC wire See page 3. Not to be used with Optima or 60M
feeders and remote controls)
Optima™ MIG Pulse Control #043 389
Optima™ Extension Cords See page 3
Running Gear
MIGRunner™ Cart #195 445
Wire Feeders/Guns
SuitCase® X-TREME™ 8VS #951 181 See Lit. Index No. M/6.41
SuitCase® X-TREME™ 12VS #951 543 See Lit. Index No. M/6.42
SuitCase® 8RC #951 186 See Lit. Index No. M/6.5
SuitCase 12RC
® #951 188 See Lit. Index No. M/6.5
70 Series See page 3
Spoolmatic® 30A Spool Gun #130 831 Requires WC-24 for use with 14-pin receptacles
WC-24 #137 549 For use with Spoolmatic 30A and power sources with 14-pin
WC-115A #137 546-01-1 For use with Spoolmatic 30A and power sources without 14-pin
Bernard® Q™-Series MIG Guns See Welding Components and Parts Guide
Coolant Systems See page 3. See Lit. Index No. AY/7.2
Cable Connectors and Adapters See above

Date: Total Quoted Price:

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© 2013 Miller Electric Mfg. Co.