Siemens JXD23B400 Circuit Breaker – Sentron Series – 400A – 3 Pole – 240VAC – Thermal Magnetic – Bolt-On

The Siemens JXD23B400 is a Sentron Series molded case circuit breaker designed to provide reliable overload and short-circuit protection for commercial, industrial, and power distribution systems. Rated at 400A and 240VAC, this 3-pole breaker is engineered for three-phase electrical applications that require high-capacity protection, dependable operation, and robust fault-clearing performance.

Featuring a thermal-magnetic trip unit with Long-Time and Instantaneous (LI) protection functions, the JXD23B400 delivers effective protection against overload conditions and short-circuit faults. With a 65kA interrupting capacity at 240VAC, it is capable of safely interrupting high fault currents, helping protect critical electrical equipment and maintain system reliability.

Built on the Siemens JXD frame platform and designed for operation in 40°C ambient environments, this breaker utilizes a secure bolt-on mounting configuration and comes complete with a factory-installed non-interchangeable trip unit. Lugs are not included, allowing flexibility in selecting terminal connections to suit specific installation requirements.

Specifications

• Brand: Siemens Breakers
• Part Number: JXD23B400
• Series: Sentron Series
• Type: JXD Molded Case Circuit Breaker
• Category: Molded Case Circuit Breaker
• Mounting Type: Bolt-On
• Protection Type: Thermal Magnetic
• Trip Unit: Non-Interchangeable
• Ambient Rating: 40°C
• Special Features: Lugs Not Included

Electrical Ratings

• Current Rating: 400A
• Voltage Rating: 240VAC
• Number of Poles: 3 Pole
• Phase: 3 Phase
• Interrupting Capacity: 65kA @ 240VAC
• Trip Functions: LI – Long-Time and Instantaneous

Construction

• Heavy-duty molded case construction
• Bolt-on mounting configuration
• Thermal-magnetic trip mechanism
• Factory-installed non-interchangeable trip unit
• Field-selectable lug configuration
• Rugged industrial-grade housing
• Designed for demanding power distribution applications

Functions

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

Dimensions

• Height: 11 in
• Width: 7.5 in
• Depth: 4 in
• Weight: 18.3 lbs

Standards

• CSA Approved

Applications

• Commercial electrical distribution systems
• Industrial power distribution equipment
• Switchboards and panelboards
• Three-phase feeder protection
• Motor control and machinery protection
• High fault-current installations
• Manufacturing and processing facilities

Returns are easy

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

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