300 Amp

We have the 300 amp you need to get the job done right.

Shop 300 Amp results

(Showing 1 - 14)

Mfr # 1443-0016

Key Features:

  • Dimensions: 1.3 in x 4.6 in x 13.8 in
  • Consumable Type: Electrode Holder
  • Package Quantity: 1
Mfr # 44227

Key Features:

  • Item: Fuse
  • Package Quantity: 1
Mfr # QONQ42MS300

Key Features:

  • Item: Load Center
  • Main Circuit Breaker or Main Lug: Main Circuit Breaker
  • Number of Spaces: 42
Mfr # QONQ42MS400

Key Features:

  • Item: Load Center
  • Main Circuit Breaker or Main Lug: Main Circuit Breaker
  • Number of Spaces: 42
Mfr # QONQ42LS400

Key Features:

  • Item: Load Center
  • Main Circuit Breaker or Main Lug: Main Lug
  • Number of Spaces: 42
Mfr # NQ42L4C

Key Features:

  • Item: Panelboard Interior
  • For Use With: NQ Circuit Breakers
  • Voltage: 120/240V AC
Mfr # QU12L400SL150

Key Features:

  • Item: Meter Main
  • Main Circuit Breaker or Main Lug: Main Lug
  • Number of Spaces: 12
Mfr # QU12L400CL

Key Features:

  • Item: METER MAIN 400A RINGLESS
  • Package Quantity: 1
Mfr # QU816D400SL

Key Features:

  • Item: Meter Main
  • Main Circuit Breaker or Main Lug: Main Lug
  • Number of Spaces: 8
Mfr # QU12L400SL

Key Features:

  • Item: Meter Main
  • Main Circuit Breaker or Main Lug: Main Lug
  • Number of Spaces: 12
Mfr # N400M

Key Features:

  • Item: Main Breaker Kit
  • For Use With: Square D L-Frame Panelboards
  • Phase: Three
Mfr # QO312L125G

Key Features:

  • Item: Load Center
  • Main Circuit Breaker or Main Lug: Main Lug
  • Number of Spaces: 12
Mfr # QO112L125PG

Key Features:

  • Item: Load Center
  • Enclosure NEMA Rating: NEMA 1
  • Main Circuit Breaker or Main Lug: Main Lug
Mfr # QO124L125PG

Key Features:

  • Item: Load Center
  • Enclosure NEMA Rating: NEMA 1
  • Main Circuit Breaker or Main Lug: Convertible Main Lug