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Siemens 3VA5150-4ED31-0AA0 25kA Circuit Breaker

Siemens 3VA5 Series 3-Pole Molded Case Circuit Breaker.

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ManufacturerSiemens

Part number3VA5150-4ED31-0AA0

Manufacturer Siemens

Part Number 3VA5150-4ED31-0AA0

Frame Size 125

Poles 3

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3-Pole Configuration 25 kA Breaking Capacity TM210 Trip Unit Permanently Set Ii UL 489 Listed

Product description

The Siemens 3VA5150-4ED31-0AA0 is a 3-pole molded case circuit breaker with a 125A frame and a nominal current (In) of 50A. It delivers a breaking capacity of 25 kA at 480V, utilizing TM210 protection with an FTFM trip unit. The overload protection (Ir) is set at 50A, and the short-circuit protection (Ii) is permanently set at 10 times the nominal current.

This circuit breaker is suitable for general-purpose applications in industrial and commercial electrical systems where a 25 kA interrupting rating is sufficient. It is commonly used for protecting feeders, branch circuits, and equipment loads that do not experience exceptionally high fault currents. Its reliability ensures consistent protection.

Stanlo Automation, a veteran-owned surplus parts distributor, offers the Siemens 3VA5150-4ED31-0AA0. We provide quality industrial automation components to help minimize your downtime and keep your operations running efficiently.

Technical specifications

Manufacturer	Siemens
Part Number	3VA5150-4ED31-0AA0
Frame Size	125
Poles	3
Rated Current (In)	50A
Breaking Capacity	25 kA @ 480V
Protection Type	TM210, FTFM
Overload Setting (Ir)	50A
Short Circuit Setting (Ii)	10 x In
Standards	UL 489

Common applications

Industrial Distribution

Equipment Protection

Branch Circuits

Commercial Panels

Machinery Protection

Compatible systems

Compatible with standard industrial control panels and distribution systems requiring UL 489 listed overcurrent protection.

Also known as

Siemens 3VA5 50A Circuit Breaker 125A Frame 25kA MCCB Siemens Molded Case Breaker

Replaces / compatible with

Direct replacement for Siemens 3VA5 series circuit breakers with 50A rating and similar interrupting capabilities.

Technical note

Expert tip

This breaker is suitable for applications where the maximum available fault current is within its 25 kA interrupting rating at 480V.

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Frequently asked questions

What are the overload and short-circuit protection settings for the Siemens 3VA5150-4ED31-0AA0?

The Siemens 3VA5150-4ED31-0AA0 has an overload protection (Ir) setting of 50A and a fixed short-circuit protection (Ii) of 10 times its nominal current (500A). This ensures reliable protection for connected loads.