Siemens JXD63B250 - 250 A, 600 V, 3-Pole Circuit Breaker | AmpState

Engineered for dependable protection in today’s electrical panels, the Siemens JXD63B250 is a 250A, 600V, 3-pole molded case circuit breaker designed to guard branch circuits in panelboards and load centers. Built to handle demanding commercial, residential, and light industrial environments, this unit delivers precise, repeatable protection when it matters most.

Why it stands apart

• Compact molded-case design maximizes usable panel space, letting you fit more circuits without crowding.
• Thermal-magnetic trip unit provides stable, predictable protection against overloads and short circuits, with fast response for critical fault conditions.
• Three-pole configuration ideal for three-phase systems, enabling clean, balanced protection for 3Ø feeders and equipment.
• 600V rated supports modern commercial and light industrial wiring, giving you a robust solution for higher voltage applications.
• 250A amperage rating handles heavy-load circuits, reducing the need for multiple breakers in larger feeders.
• OEM-compatible designed to pair with matching Siemens panelboards and load centers for straightforward installation and reliable electrical assemblies.

Applications and use cases

Perfect for panelboards and load centers in commercial spaces, multifamily buildings, small industrial facilities, and residential projects where a single, dependable 3-pole breaker is required. Use it to protect three-phase feeders, branch circuits, or as a replacement in Siemens OEM panels to maintain system integrity and compatibility.

How it works

The breaker combines a thermal sense element with magnetic trip action. Under normal load, the thermal component meters heat buildup and trips only when a preset overload is exceeded. If a short circuit occurs, the magnetic element provides immediate trip, isolating the fault to prevent damage and enhance safety.

Technical snapshot

• Manufacturer: Siemens
• Part Number: JXD63B250
• Type: Thermal-magnetic molded case circuit breaker
• Amperage Rating: 250A
• Voltage Rating: 600V
• Number of Poles: 3
• Applications: Branch circuit overcurrent and short-circuit protection

Installation and compatibility notes

Designed for seamless integration with Siemens OEM load centers and panelboards, ensuring consistent trip characteristics and electrical coordination within your panel. When selecting for a retrofit or new installation, verify panel compatibility and ensure the enclosure has adequate space for a 3-pole, 250A device. For installation specifics like torque and wiring standards, refer to Siemens data sheets and local electrical codes.