MF DIGITAL 5907-VL Spezifikationen PDF herunterladen (Seite 18)

3WL Air Circuit Breakers

3WL Air Circuit Breakers/Non-Automatic Air Circuit Breakers up to 6300 A (AC)

General data

Siemens · 2012

ETU27B electronic release

ETU45B electronic release

Application:

Classical building, motor and sys-

tem protection with time-selective

coordination for up to 6300 A

Features:

The same as ETU25B but also

• Reversible neutral conductor

protection

• Permanently integrated ground-

fault protection. Calculation of

the ground-fault current through

vectorial summation current for-

mation

For technical details see the table

"Functional Overview

of the Electronic Release System"

under "Technical Specifications".

NSE0_00956c

Rating Plug

OFF

OFF ON

ETU27B

Rotary switch for delay,

earth-fault protection

N-conductor protection

on/off

value, earth-fault protection

Rotary switch for setting

Rated current module

Option: safety lock

prevents pressing of

reset button after

overcurrent release

Indicator: fault in

overcurrent release

Sealing ring

Test socket

Clear pushbutton

Indicator: cause of release

Rotary switch for delay,

short-circuit release

Mechanical RESET

for reclosing lockout

and mechanical

tripped indicator

Rotary switch for setting

value, overload release

Rotary switch for setting

value, instantaneous

short-circuit release

Indicator: overcurrent

release activated

Indicator: overload alarm

Query pushbutton

Test pushbutton

Short-circuit protection

fixed setting

Application:

Low-cost all-round system for

intelligent buildings and all types of industrial

applications – "

Cubicle

BUS integrated"

Features:

The same as ETU25B but also

• Adjustable time-lag class

for overload protection

• Selectable characteristic for overload and

short-delayed short-circuit range (current

discrimination) for more accurate discrimi-

nation adaptation to upstream fuses and

protective devices

• Thermal image as restart protection for

tripped motor outgoing feeders

• Reversible and adjustable neutral conduc-

tor protection

• Modular ground-fault protection module

with alarm and tripping functions which can

be adjusted separately

• Communication interface,

measurement function

Plus

, optional

connection of external modules or for retro-

fitting

• Storage of events and causes for tripping

for detailed fault analysis

• Extended protection function possible with

measurement function

• Optional high-contrast display with viewing

angle adjustment option

• The protection functions can be set by

means of a rotary coding switch or slide

switch

For technical details see the table

"Functional Overview of the Electronic

Release System" under "Technical

Specifications".

NSE0_00957b

Rating Plug

OFF ON

ETU45B

Option: safety lock

prevents pressing of

reset button after

overcurrent release

Mechanical RESET

for reclosing lockout

and mechanical

tripped indicator

Indicator: fault in

overcurrent release

Sealing ring

Test socket

Rotary switch for setting

value, overload release

Rotary switch for setting

value, instantaneous

short-circuit release

Overload alarm

Overcurrent release

activated

Clear pushbutton

Indicator: cause of release

Rotary switch for delay,

short-circuit release

Rated current module

Selector for

earth-fault protection

Rotary switch for delay,

earth-fault protection

N-conductor protection on/off

Scroll up

COMMUNICATION

EXPANDED

Indicators:

Rotary switch for setting

value, short-circuit

protection

Rotary switch for setting

value, earth-fault

protection

Rotary switch for setting

value, earth-fault alarm

Test pushbutton

Query pushbutton

Option: alphanumeric display

Scroll down

Thermal memory on/off

Setting value

N-conductor overload

Indicator: earth-fault tripped

Indicator: earth-fault alarm

Option: earth-fault module

Rotary switch for delay,

overload release

Transfer of overload

characteristic

1 2 ... 13 14 15 16 17 18 19 20 21 22 23 ... 61 62

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