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Siemens 3VA5120-6EC31-0AA0 3-Pole Circuit Breaker — 20A

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

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ManufacturerSiemens

Part number3VA5120-6EC31-0AA0

Part Number 3VA5120-6EC31-0AA0

Manufacturer Siemens

Frame Size 125

Poles 3

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3-pole circuit breaker UL Frame 125 65 kA @ 480V breaking capacity TM230 protection In=20A High interrupting capacity

Product description

The Siemens 3VA5120-6EC31-0AA0 is a high-capacity 3-pole 3VA5 UL frame 125 circuit breaker featuring breaking capacity class H, rated at 65 kA at 480 V. It is equipped with TM230 technology for overload protection (Ir=20 A) and adjustable short-circuit protection (Ii=7.5...15 x In).

This breaker is engineered for demanding industrial applications requiring superior protection against high fault currents. Its 65kA interrupting rating is suitable for main feeders, critical machinery, and areas with high short-circuit potential.

Stanlo Automation, a veteran-owned distributor, offers the Siemens 3VA5120-6EC31-0AA0. Acquire this high-performance circuit breaker from us to ensure the utmost safety and reliability in your industrial electrical systems.

Technical specifications

Part Number	3VA5120-6EC31-0AA0
Manufacturer	Siemens
Frame Size	125
Poles	3
Breaking Capacity Class	H
Breaking Capacity	65 kA @ 480 V
Protection Type	TM230
In	20 A
Ir	20 A
Ii	7.5...15 x In

Common applications

Heavy industrial facilities

Main power distribution

Critical machinery protection

High fault current environments

Motor control centers

Compatible systems

Main electrical distribution High-fault industrial systems Critical motor protection Heavy machinery applications

Also known as

Siemens 65kA 20A breaker 3VA5120-6EC31 Siemens industrial MCCB

Replaces / compatible with

This breaker provides the highest interrupting capacity in its series, making it ideal for main feeders and critical applications where fault currents are high. Compatible with Siemens 3VA accessories.

Technical note

Expert tip

The H-class 65kA interrupting rating is critical for applications where very high fault levels are anticipated, providing enhanced safety and system protection.

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Frequently asked questions

What is the benefit of the adjustable Ii setting on the 3VA5120-6EC31-0AA0?

The adjustable short-circuit protection (Ii) on the TM230 trip unit, ranging from 7.5 to 15 times the nominal current (In) for this 20A breaker, allows for precise coordination with other protective devices in the electrical system, preventing nuisance tripping while ensuring protection.