Siemens JXD63H400 - 400 A, 480 V, 3-Pole Bolt-On Circuit Breaker | AmpState

Introducing the Siemens JXD63H400 by AmpState — a 400A, 480V, 3-pole bolt-on molded case circuit breaker built to safeguard branch circuits with precision in panelboards and loadcenters.

Designed for reliability in demanding environments, this unit uses secure bolt-on mounting to deliver a rigid, vibration-resistant connection to the bus. The thermal-magnetic trip unit combines fast magnetic response for short circuits with thermal delay for stable protection during overcurrent events, reducing nuisance trips while safeguarding wiring and equipment.

• Secure bolt-on mounting ensures a rigid, vibration-resistant bus connection that stays put through panel servicing and busy environments.
• Thermal-magnetic trip unit provides stable, repeatable protection against overcurrent and short-circuit faults, balancing speed and selectivity.
• 3-pole design supports three-phase systems common in commercial and light industrial applications.
• 400A at 480V rating handles high-current branch circuits with room to spare for equipment and motor loads.
• OEM compatibility works with matching Siemens OEM loadcenters and panelboards for a streamlined installation.
• Versatile applications suitable for residential, commercial, and light industrial environments that require reliable protection.

Practical applications and scenarios

Use this bolt-on MCCB in service entrances, main distribution panels, or feeder circuits where three-phase power is present. It’s ideal for upgrading aging panels, integrating new equipment, or replacing a failing breaker in panelboards that demand consistent protection and solid electrical connections.

Specifications at a glance

• Manufacturer: Siemens
• Part Number: JXD63H400
• Type: Thermal-magnetic molded case circuit breaker
• Amperage Rating: 400A
• Voltage Rating: 480V
• Number of Poles: 3
• Mounting Style: Bolt-on
• Application: Branch circuit overcurrent and short-circuit protection

Note: This description references AmpState’s listing for the Siemens JXD63H400. Ensure you’re selecting a breaker that matches your OEM panelboard’s specifications and installation requirements.

Equip your panel with a trusted Siemens solution designed for dependable performance across residential, commercial, and light industrial settings. The JXD63H400 delivers robust protection, easy installation, and compatible integration with Siemens loadcenters to keep your electrical system running smoothly.