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Siemens 3VA5112-5EC31-0AA0 3-Pole Circuit Breaker — 125A

Siemens 3VA5 UL Frame 125 3-pole circuit breaker.

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ManufacturerSiemens

Part number3VA5112-5EC31-0AA0

Part Number 3VA5112-5EC31-0AA0

Manufacturer Siemens

Frame Size 125

Poles 3

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3-pole circuit breaker UL Frame 125 35 kA breaking capacity @ 480V TM230 protection In=125A Adjustable short-circuit protection

Product description

The Siemens 3VA5112-5EC31-0AA0 is a 3-pole 3VA5 UL frame 125 circuit breaker offering a higher breaking capacity class M, rated at 35 kA at 480 V. It is equipped with TM230 technology for overload protection (Ir=125 A) and adjustable short-circuit protection (Ii=5...10 x In).

This circuit breaker is designed for robust protection in industrial environments, including manufacturing plants, processing facilities, and power distribution systems that require higher fault current interruption capabilities. Its 3-pole configuration is standard for three-phase applications.

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Technical specifications

Part Number	3VA5112-5EC31-0AA0
Manufacturer	Siemens
Frame Size	125
Poles	3
Breaking Capacity Class	M
Breaking Capacity	35 kA @ 480 V
Protection Type	TM230
In	125 A
Ir	125 A
Ii	5...10 x In

Common applications

Industrial manufacturing

Processing plants

Three-phase power distribution

High fault current systems

Motor control centers

Compatible systems

Industrial power distribution Motor protection Machine tools Three-phase systems

Also known as

Siemens 3VA5 MCCB 3VA5112-5EC31 Siemens 125 Amp breaker

Replaces / compatible with

This Siemens 3VA5 breaker is a higher interrupting capacity option compared to S-class breakers. It is compatible with Siemens 3VA accessories.

Technical note

Expert tip

The adjustable Ii setting on this TM230 protected breaker allows for fine-tuning of short-circuit protection to better coordinate with downstream devices.

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Frequently asked questions

What is the adjustable short-circuit protection range on the 3VA5112-5EC31-0AA0?

The Siemens 3VA5112-5EC31-0AA0 circuit breaker features adjustable short-circuit protection (Ii) ranging from 5 to 10 times its nominal current (In). For a 125A breaker, this means the Ii can be set between 625A and 1250A.