Processes
- MIG (GMAW)
- Flux-cored (FCAW)
- Pulsed MIG
Bernard industrial MIG guns
Bernard BTB Air-Cooled MIG Guns
BTB air-cooled guns are configurable Bernard industrial guns listed with Miller-compatible power sources and feeders.
Heavy industrial
Steel
current catalog
Wire Capacity
.023 - 1/8 in. (0.6 - 3.2 mm)
Cable Lengths
10, 15, 20, or 25 ft. depending on configuration
Compatible Machine Paths
Millermatic 355
Open support pageGun Models
| Model | Stock # | Cable | Output | Wire size | Consumables |
|---|---|---|---|---|---|
| BTB 300 A | Q3015AE9HMC1 | 15 ft. (4.6 m) | 300 A | .052 in. (1.4 mm) | AccuLock S |
| BTB 300 A | Q3015AE9EMC1 | 15 ft. (4.6 m) | 300 A | .045 in. (1.2 mm) | AccuLock S |
| BTB 400 A | Q4015AE9EMC1 | 15 ft. (4.6 m) | 400 A | .045 in. (1.2 mm) | AccuLock S |
| BTB 400 A | Q4015ME9EMC1 | 15 ft. (4.6 m) | 400 A | .045 in. (1.2 mm) | AccuLock S |
Consumables and Replacement Parts
| Item | Part # | Description | Category | Buy |
|---|---|---|---|---|
| Diffuser | DS-A1-C | Rear load liner, small, thread-on | Diffuser | -- |
| Diffuser | DS-A2-C | Rear load liner, small, slip-on | Diffuser | -- |
| Diffuser | D-A1-C | Rear load liner, large, thread-on | Diffuser | -- |
| Diffuser | D-A2-C | Rear load liner, large, slip-on | Diffuser | -- |
| Nozzle | NS-A1218B | 1/2 in. ID, 1/8 in. recess brass nozzle, small | Nozzle | -- |
| Nozzle | NS-A5818C | 5/8 in. ID, 1/8 in. recess copper nozzle, small | Nozzle | -- |
| Tip | T-A035CH | .035 in. AccuLock S contact tip | Contact tip | Amazon link: Needs verification. |
| Tip | T-A045CH | .045 in. AccuLock S contact tip | Contact tip | Amazon link: Needs verification. |
| Tip | T-A052CH | .052 in. AccuLock S contact tip | Contact tip | -- |
| Tip | T-A062CH | 1/16 in. AccuLock S contact tip | Contact tip | -- |
Related Support Paths
Millermatic 355
Catalog-listed all-in-one machine path.
Open support pageBernard Clean Air E
Fume extraction gun family.
Open support page
Source: Miller Electric 2026 Full-line Catalog (source-bf756b1d2b74, page 24). Amazon links are kept separate from compatibility data.