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Siemens 3VL7712-1SE36-0AA0 VL1250N LSI Circuit Breaker

Siemens 3VL7712-1SE36-0AA0 VL1250N LSI circuit breaker

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ManufacturerSiemens

Part number3VL7712-1SE36-0AA0

Series VL1250N

Breaking Capacity Icu=55kA, 415V AC

Poles 3

Trip Unit ETU20, LSI

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ETU20 LSI Trip Unit Adjustable Overload & Short-Circuit Protection 1250A Rated Current 55kA Breaking Capacity Line Protection

Product description

The Siemens 3VL7712-1SE36-0AA0 is a VL1250N circuit breaker designed for line protection, offering a standard breaking capacity of 55kA at 415V AC. This 3-pole unit is equipped with an ETU20 trip unit that provides LSI (Long-time, Short-time, Instantaneous) protection. The rated current (In) is 1250A, with adjustable overload protection (IR) from 500A to 1250A, and short-circuit protection settings of ISD=1.5 to 9xIR and II=10xIN.

This circuit breaker is ideal for applications requiring advanced protection against various fault conditions, including overloads, delayed short circuits, and instantaneous short circuits. Its adjustable LSI settings allow for precise customization to protect electrical lines in industrial and commercial power systems.

Stanlo Automation, a veteran-owned surplus parts distributor, offers the Siemens 3VL7712-1SE36-0AA0. We are your trusted source for quality automation components, ensuring your operations run smoothly.

Technical specifications

Series	VL1250N
Breaking Capacity	Icu=55kA, 415V AC
Poles	3
Trip Unit	ETU20, LSI
In	1250A
IR	500-1250A
ISD	1.5-9 x IR
II	10 x IN
Application	Line Protection

Common applications

Industrial Power Systems

Distribution Boards

Machine Protection

Advanced Electrical Protection

Manufacturing

Compatible systems

Siemens VL Series MCCBs

Also known as

Siemens VL1250N LSI 3VL7712-1SE36-0AA0 Siemens

Replaces / compatible with

This part is a spare part for replacement purposes. It is designed for line protection applications within the Siemens VL1250N series.

Technical note

Expert tip

The ETU20 trip unit with LSI protection provides enhanced flexibility for setting time-delayed short-circuit protection (ISD) and instantaneous short-circuit protection (II).

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Frequently asked questions

What are the short-circuit protection settings on the Siemens 3VL7712-1SE36-0AA0 circuit breaker?

The Siemens 3VL7712-1SE36-0AA0 features an ETU20 LSI trip unit with adjustable short-circuit protection. ISD is adjustable from 1.5 to 9 times the rated current (IR), and II is set at 10 times the rated current (IN).