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Siemens JXD63S400AL 3-Pole Circuit Breaker - 400A, Type S, L

Siemens JXD63S400AL 3-pole, 400A, Type S, L circuit breaker.

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ManufacturerSiemens

Part numberJXD63S400AL

Poles 3

Current Rating 400A

Voltage Rating 400V AC

Breaking Capacity 25kA

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3-pole design 400A current rating Type S and L characteristics High breaking capacity DIN rail compatible Siemens industrial quality

Product description

The Siemens JXD63S400AL is a high-capacity 3-pole circuit breaker designed for robust protection in industrial environments. Featuring a 400A current rating and identified by the 'S' and 'L' designations, this breaker offers specific performance characteristics tailored for demanding applications. It is built to Siemens' stringent quality standards for reliability and safety.

This circuit breaker is well-suited for use in main distribution panels, large motor circuits, and heavy-duty industrial equipment protection. The 'L' might indicate a specific trip curve or enhanced feature for inductive loads or specific protection requirements.

Stanlo Automation, a veteran-owned surplus parts distributor, provides the Siemens JXD63S400AL to meet your industrial automation needs. We ensure access to quality, hard-to-find components with competitive pricing and reliable service.

Technical specifications

Poles	3
Current Rating	400A
Voltage Rating	400V AC
Breaking Capacity	25kA
Type	S L
Mounting	DIN Rail

Common applications

Industrial power distribution

Heavy machinery protection

Motor control

Manufacturing facilities

High-current applications

Electrical safety

Compatible systems

400V AC power distribution systems Industrial control panels Heavy load motor circuits

Also known as

Siemens 400A S L Breaker JXD63S400AL MCB Siemens JXD Series 400A

Replaces / compatible with

Serves as a direct replacement for other Siemens JXD series circuit breakers with similar specifications. The 'L' designation may indicate suitability for applications requiring a specific trip characteristic compared to standard 'S' types.

Technical note

Expert tip

The 'L' in JXD63S400AL often signifies a long-time delay function, providing specific protection against nuisance tripping due to temporary current surges while still protecting against sustained overloads.

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Frequently asked questions

What application is the Siemens JXD63S400AL circuit breaker typically used for?

The Siemens JXD63S400AL, with its 400A rating and Type S L designation, is typically used in heavy-duty industrial applications such as main power distribution, protection of large motors, and safeguarding high-power machinery where precise and reliable overcurrent protection is critical.