Siemens JXD63B300 3-Pole 300A 600V Circuit Breaker

The Siemens JXD63B300 is a 3-pole, 300-amp molded case circuit breaker from the Sentron JD-Frame series. Rated for 600VAC with an interrupting capacity of 25kA at 600V and 35kA at 480V. Features a non-interchangeable thermal-magnetic trip unit. Designed for use in Siemens Sentron panelboards and switchboards.

JXD63B300 Specifications

SpecificationValue
Amperage300A
Poles3
Voltage600VAC
Interrupt Rating25kA @ 600V · 35kA @ 480V
Frame SizeJD-Frame
Mounting TypeFixed
Trip TypeThermal-Magnetic
Trip FunctionLI — Long-Time, Instantaneous
Wire Size250–600 kcmil (Al/Cu)
Phase3-Phase
StandardsUL 489, CSA C22.2 No.5
Temperature Rating40°C

Key Features

  • Non-interchangeable thermal-magnetic trip
  • 25kA @ 600V interrupting capacity
  • 35kA @ 480V interrupting capacity
  • Standard 40°C breaker
  • JD-frame construction
  • AllBreakerSales.com 1-Month Replacement Warranty — defects in material or workmanship covered

Applications

  • Commercial HVAC
  • Industrial motor control
  • Distribution panels
  • Feeder protection

Buy JXD63B300 Circuit Breaker

Siemens JD 300A 3-pole circuit breaker. In stock at AllBreakerSales.com. Call (877) 611-0034 for same-day pricing. Genuine OEM parts, ships from US warehouse.

Brand: Siemens | Series: JD | Catalog Number: JXD63B300

Related Circuit Breakers

JXD63B250 - Siemens JD | JXD63B350 - Siemens JD | JXD63B400 - Siemens JD

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