Siemens JXD62B300 Circuit Breaker – Sentron Series – 300A – 2 Pole – 600VAC – Thermal Magnetic – JD Frame

The Siemens JXD62B300 is a Sentron Series low-voltage molded case circuit breaker engineered to provide reliable overload and short-circuit protection for commercial, industrial, and power distribution applications. Rated at 300A and 600VAC, this 2-pole breaker is designed for single-phase systems requiring dependable performance and robust fault protection.

Equipped with a thermal-magnetic trip unit featuring Long-Time and Instantaneous (LI) protection functions, the JXD62B300 delivers effective protection against sustained overload conditions and high-level short-circuit faults. Built on the Siemens JD frame platform, this standard 40°C breaker incorporates a non-interchangeable trip unit and standard breaking capacity for reliable operation in demanding electrical environments.

The breaker meets UL 489 and IEC 60947-2 standards and is supplied without lugs installed, allowing flexibility in selecting compatible terminal connections based on installation requirements.

Specifications

• Brand: Siemens Breakers
• Part Number: JXD62B300
• Series: Sentron Series
• Type: JD Frame Molded Case Circuit Breaker
• Category: Molded Case Circuit Breaker
• Connection Type: Bolt-On
• Frame Type: JD Frame
• Protection Type: Thermal Magnetic
• Trip Unit: Non-Interchangeable
• Ambient Rating: 40°C
• Special Features: No Lugs Installed

Electrical Ratings

• Current Rating: 300A
• Voltage Rating: 600VAC
• Number of Poles: 2 Pole
• Phase: 1 Phase
• Interrupting Capacity: 35kA @ 480VAC
• Interrupting Capacity: 25kA @ 600VAC
• Trip Functions: LI – Long-Time and Instantaneous

Construction

• Heavy-duty molded case construction
• JD frame design
• Thermal-magnetic trip mechanism
• Non-interchangeable trip unit
• Standard interrupting capacity configuration
• Supplied without lugs installed
• Durable industrial-grade housing
• Designed for commercial and industrial power distribution systems

Functions

• Overload protection
• Short-circuit protection
• Long-time delay protection
• Instantaneous fault protection
• Circuit switching and isolation

Dimensions

• Width: 7.5 in
• Height: 11 in
• Depth: 4 in
• Weight: 15.1 lbs

Standards

• UL 489
• IEC 60947-2
• CSA Approved

Applications

• Commercial electrical distribution systems
• Industrial power distribution equipment
• Switchboards and panelboards
• Feeder circuit protection
• Equipment and machinery protection
• Single-phase power distribution systems
• High-voltage electrical installations

Returns are easy

You may return items within 30 days of delivery for a refund.

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