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Siemens 3VA27 Molded Case Circuit Breaker - 1250A

Siemens 3VA27 Molded Case Circuit Breaker with ETU320.

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ManufacturerSiemens

Part number3VA2712-5AB05-0AA0

Type Fixed-mounted molded case circuit breaker

Frame Size 1600

Breaking Capacity Icu=55 kA @ 415 V

Poles 3

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Fixed-mounted MCCB 1600A frame size 55 kA breaking capacity ETU320 with LI protection Adjustable Ir and Ii settings N-conductor protection adjustable

Product description

The Siemens 3VA2712-5AB05-0AA0 is a fixed-mounted molded case circuit breaker (MCCB) within the 3VA2 series, rated for a 1600 frame size. It features a breaking capacity of 55 kA at 415V and a nominal current (In) of 1250A. Equipped with an ETU320 electronic trip unit providing LI protection, it offers adjustable overload protection (Ir) from 500A to 1250A and short-circuit protection (Ii) from 1.5 to 15 times the nominal current.

This MCCB is designed for line protection in industrial and commercial power distribution systems. Its features include adjustable settings for overload and short-circuit protection, N-conductor protection options, and rotary coding switches for configuration. It is also equipped with 4 auxiliary contacts and a trip alarm switch.

Stanlo Automation, your veteran-owned source for surplus industrial automation parts, carries the Siemens 3VA2712-5AB05-0AA0. We ensure reliable availability and quality for critical components like this circuit breaker.

Technical specifications

Type	Fixed-mounted molded case circuit breaker
Frame Size	1600
Breaking Capacity	Icu=55 kA @ 415 V
Poles	3
Trip Unit	ETU320, LI
In	1250 A
Ir	500-1250 A
Ii	1.5-15 x In
Aux Contacts	4
Trip Alarm Switch	S24

Common applications

Industrial power distribution

Commercial electrical systems

Motor control

Machine protection

Control panel building

Compatible systems

Siemens 3VA2 series circuit breakers Industrial control systems

Also known as

Siemens 3VA27 MCCB 3VA27 1250A circuit breaker Siemens molded case breaker

Replaces / compatible with

This circuit breaker is part of the Siemens 3VA2 series and is suitable for applications requiring reliable protection and isolation in industrial power systems.

Technical note

Expert tip

The rotary coding switch allows for easy adjustment of protection settings, including Ir and Ii, without the need for additional accessories.

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Frequently asked questions

What are the protection settings for the Siemens 3VA2712-5AB05-0AA0 circuit breaker?

The Siemens 3VA2712-5AB05-0AA0 features an ETU320 trip unit with LI protection. Overload protection (Ir) is adjustable from 500A to 1250A, and short-circuit protection (Ii) is adjustable from 1.5 to 15 times the nominal current.