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Siemens 3VA6 UL Frame 400 3-Pole Circuit Breaker - LSI

Siemens 3VA6 UL Frame 400 3-pole circuit breaker with advanced ETU350 LSI protection.

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ManufacturerSiemens

Part number3VA6340-6HN31-0AA0

Manufacturer Siemens

Part Number 3VA6340-6HN31-0AA0

Series 3VA6

Frame Size 400

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3-pole configuration UL certified 65kA breaking capacity @ 480V Advanced ETU350 LSI trip unit Long-time, short-time, and instantaneous protection High-performance industrial breaker

Product description

The Siemens 3VA6340-6HN31-0AA0 is a 3-pole molded case circuit breaker from the 3VA6 series, designed for UL applications. It features a 400A frame size with a 65kA breaking capacity at 480V. This model is equipped with an advanced ETU350 electronic trip unit, offering LSI (Long-time, Short-time, and Instantaneous) protection.

This circuit breaker is suited for applications requiring more sophisticated protection and coordination capabilities, particularly in industrial environments where precise fault detection and discrimination are necessary. The LSI functionality allows for selective tripping in complex power systems.

Stanlo Automation, your veteran-owned source for surplus industrial automation parts, offers the Siemens 3VA6340-6HN31-0AA0. We are dedicated to providing quality components and exceptional service to our customers.

Technical specifications

Manufacturer	Siemens
Part Number	3VA6340-6HN31-0AA0
Series	3VA6
Frame Size	400
Poles	3
Breaking Capacity	65 kA @ 480 V
Trip Unit	ETU350, LSI
Overload Protection	Ir=160 A...400 A
Short-time Protection	Isd=1.5...10 x Ir
Instantaneous Protection	Ii=10 x In
Connection	Without connection

Common applications

Industrial power distribution

Complex electrical systems

Motor control

Plant automation

Fault discrimination

High fault current environments

Compatible systems

Siemens 3VA Series accessories Industrial power distribution Systems requiring selective tripping

Also known as

Siemens 3VA6 LSI breaker ETU350 protected circuit breaker Siemens 400A industrial breaker 3VA6340-6HN31

Replaces / compatible with

Can replace existing circuit breakers where LSI protection is needed for better system selectivity and fault management.

Technical note

Expert tip

The ETU350's adjustable short-time delay (Isd) is crucial for achieving proper selective coordination with downstream protective devices.

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Frequently asked questions

What does the LSI protection on the Siemens 3VA6340-6HN31-0AA0 offer?

The LSI (Long-time, Short-time, and Instantaneous) protection on the Siemens 3VA6340-6HN31-0AA0 provides versatile fault management. It allows for adjustable long-time overload settings, adjustable short-time delay (Isd) for discrimination, and a fixed instantaneous trip (Ii) for high-magnitude faults.