Siemens HJD63B300 3-Pole 300A 600V High Interrupting Circuit Breaker

The Siemens HJD63B300 is a 300-amp, 3-pole, 600VAC Sentron series JD-frame molded case circuit breaker with high interrupting capacity — 100kA at 240V, 65kA at 480V, and 35kA at 600V. Part of the JD frame family (400A frame), available from 200A to 400A. The HJD6 type designation indicates the JD frame with high interrupting (H) rating. Used in commercial and industrial feeder and main circuit applications requiring high fault current interruption. Dimensions: 11 in L x 7.5 in W x 4 in D.

HJD63B300 Specifications

Specification	Value
Amperage	300A
Poles	3
Voltage	600VAC / 500VDC
Interrupt Rating	100kA @ 240V · 65kA @ 480V · 35kA @ 600V
Frame Size	JD Frame (400A Frame)
Mounting Type	Bolt-On
Trip Type	Thermal Magnetic
Trip Function	LI — Long-Time, Instantaneous
Wire Size	#3/0–500 kcmil Cu/Al
Phase	3-Phase
Standards	UL 489, IEC 60947-2
Temperature Rating	40°C

Key Features

• 100kA interrupting capacity at 240V
• 65kA interrupting capacity at 480V
• 35kA interrupting capacity at 600V
• JD frame — 400A frame size, 200–400A trip range
• Interchangeable trip units available
• Bolt-on terminal connections

Applications

• Industrial feeder circuit protection
• Switchboard main and feeder breakers
• High fault current commercial facilities

Buy HJD63B300 Circuit Breaker

Siemens Sentron HJD6 JD-Frame 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: Sentron HJD6 JD-Frame | Catalog Number: HJD63B300

Related Circuit Breakers

HJD63B250 - Siemens HJD High-AIC J-Frame | HJD63B350 - Siemens Sentron HJD6 JD-Frame | HJD62B300 - Siemens Sentron HJD6 JD-Frame