siemens 3vt mccb

Automation and Drives

Low VoltageControls & Distribution

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Products for Power Distribution

SIEMENS

Sentron 3VT MCCB : Presentation

• Product Range

• Product Standards

• Product Applications

• Product Features

• Product Benefits

• 3VT Presentation Summary



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SIEMENS

ENTRON VL

Sentron 3VT MCCB : Complete Range



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SIEMENS

Sentron 3VT MCCB : Complete Range

One series 6 frame sizes 3-pole and 4-pole Fixed-mounted, plug-in and draw-out versions 3 breaking capacity classes: N / H / L

Ics = Icu above 250A * Microprocessor based and

thermomagnetic trip units available

The complete MCCB product range from 10A to 630A

* Applicable for N switching capacity



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SIEMENS

Sentron 3VT MCCB : Range of complete & flexible solutions

Description

(1) Molded case circuit-breaker 3VT(2) Thermal-magnetic overcurrent trip unit(3) Microprocessor overcurrent trip unit(4) Undervoltage release(5) Shunt release(6) Auxiliary switches(7) Motorized operating mechanism(8) Door-mounted rotary mechanism (9) MCCB mounted rotary mechanism(10) Plug-in base(11) Withdrawable version(12) Phase barriers(13) Terminal covers(14) Extended front busbar connecting bars



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SIEMENS

Type VT 63 VT 100 VT 160 VT 250 VT 400 VT 630

Sentron 3VT MCCB : Overview

available - not available

Rated current In at 40 °C ambient temperature

A 10 ... 63 A 32 ... 100 A 22.4... 160 A 112 ... 250 A 172 ... 400 A 400 ... 630 A

Number of poles 3 4 3 4 3 4 3 4 3 4 3 4

Rated operating voltage UeAC 50/60 Hz

V

440

440

440

440

440

440

Overcurrent trip units Thermal-magneticMicroprocessor based

-

-

-

-

-

-

-

-



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SIEMENS

Type VT 63 VT 100 VT 160 VT 250 VT 400 VT 630

Sentron 3VT MCCB : O/L and S/C settings

* Electronic Trip Unit available - not available

Rated current In at 40 °C ambient temperature

VT 63 VT 100 VT 160 VT 250 VT 400 VT 630

FT – FM

AT – FM - - *

AT – AM

(Microprocessor based TU)

- - - -



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SIEMENS

• Distribution system (LI / LSI)

• Distribution system (LIN / LSIN) *

• Earth fault protection (LSIG)

• DC networks

• Transformer protection

• Capacitor switching devices

Sentron 3VT MCCB : Applications

* applicable in case of 4 pole MCCB



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SIEMENS

Sentron 3VT MCCB : Dimensions

VT 63 VT 100 VT 160 VT 250 VT 400 VT 630

76.2 103 76.2 103 90 120 105 140 140 184 210 280 width [mm]

120 120 120 120 120 120 170 170 254 254 268 268 height [mm]

3 4 3 4 3 4 3 4 3 4 3 4 Pole



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SIEMENS

Sentron 3VT MCCB : Breaking Capacities

up to 415 VAC

25 / 3512.5 / 35 $

5037.5

65 48.75

Icu [kA]Ics [kA]

65kA

25kA

standard high very high N # H L*

35kA

50kA

* Available for VT630 only# 25 kA upto 100 A $ 26.25 kA for VT160N



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SIEMENS

A higher short-circuit breaking capacity does not influence the foot print

A higher short-circuit breaking capacity does not influence the foot print


35kA 50 kA 65 kA



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SIEMENS

Sentron 3VT MCCB : Standards

SENTRON 3VT complies with following standards :

• IEC 60947-1

• IEC 60947-2

• IEC 60947-4-1

• IEC 60947-5-1



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SIEMENS

Sentron 3VT MCCB : Features

• Microprocessor and Thermo-magnetic release

• 3 Pole and 4 Pole

• Manual and Motorised operation

• Plug-in and Draw-out version

• Suitable for line-load reversibility

• N, H & L Breaking capacities are available in same frame size



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SIEMENS

Sentron 3VT MCCB : Features

• Modular Design

• Current limiting

• Suitable for Isolation

• 4th Pole 100% rated

• Neutral protection

• “Blow apart” contact design



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SIEMENS

Sentron 3VT MCCB : Customer Benefits

• Economically fulfills high demands of today’s electrical

distribution system

• Saves Panel cost and costly floor space due to compact Size

• “Microprocessor based TU” ensures accurate protection, measures TRUE RMS current

• Flexible and user friendly

Contd....



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SIEMENS

• Convenient to operate and better panel aesthetics

• It can be adopted to every electrical application

• Low thermal and dynamic stresses on downstream breakers due to low let through energy

• Gives flexibility to close and open remotely due to motor operator

• Suitable for Earth fault protection

Sentron 3VT MCCB : Customer Benefits



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SIEMENS

Sentron 3VT MCCB : Characteristics of TM Trip Unit



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SIEMENS

Sentron 3VT MCCB : Characteristics of μp based Trip Unit

Ir

Isd

Ii

Ig

tsd

Current (A)

Rel

ease

ti m

e (s

)

L Overload protection

SSelective short-circuit Delayed Short-circuit protection

IInstantanous short-circuit protection

G Earth-fault protection



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SIEMENS

Sentron 3VT MCCB : μp based Trip Unit

Current beam indication of

operation

Indication of power and self-

diagnostic

Alarm indication

of fault

Switch for long time delay setting Ir

Switch for current settings Isd, Ii

Characteristics curve of over

current

Switch for earth fault current

setting*

Switch for pre alarm setting Ilc

* Available for 4-pole version only



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SIEMENS

Microprocessor based trip unit settings:

Sentron 3VT MCCB : μp based Trip Unit



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SIEMENS

Sentron 3VT MCCB : Fixed-mounting, Plug-In and Withdrawable Version

The fixed-mounting circuit-breaker is the basic version

Plug-in and withdrawable versions are also available from the factory



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SIEMENS

Sentron 3VT MCCB : Internal Accessories

• Only three groups of internal accessories cover the entire product range

• Easy “ snap in “ internal accessories like under voltage, shunt, auxiliary, auxiliary and alarm units

VT 63 VT 100 VT 160 VT 250 VT 400 VT 630

Family I Family II Family III



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SIEMENS


The 3VT circuit-breakers can be supplied with all the internal accessories factory fitted

Left accessory compartment

Right accessory compartment

Left side Central Right sideAlarm

Auxiliary

Alarm+Auxiliary

Two sets of Auxiliary

Shunt release

Shunt release Alarm

Shunt release Auxiliary

Shunt release Alarm+Auxiliary

Under voltage release


Alarm


Auxiliary


Alarm+Auxiliary

Installation Position of Accessories



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SIEMENS


Undervoltage releases

If there is no voltage present, closing of the breaker is not

possible

If voltage is not applied to the trip unit, operation of the circuit-breaker will result in no-load switching

All undervaltage releases have been designed and tested to fulfill all

applicable requirments in accordence with IEC 60947 ( release voltage 0.70 to 0.35 Ue, response voltage 0.85 to 1.10 Ue



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SIEMENS

Shunt release

It is used for remote tripping of the circuit-breaker

The coil of the shunt release is designed for short-time operation only

A coil trip is implemented internally

ST coil comes equipped with its dedicated cut-off contact

These devices operate in compliance with IEC 60947 ( tripping voltage 0.70 to 1.10 Ue)




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SIEMENS

Auxiliary switches (HS) are used for ON and OFF position indication

and control

The alarm switches (AS) are active when the circuit-breaker has been tripped due to an overcurrent e.g. overload or short-circuit

Auxiliary and Alarm Switches




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SIEMENS

Sentron 3VT MCCB : Motorised operating mechanism

Motorised operating mechanism

VT 160

VT 250

VT400 / VT 630

The VT 160 to VT 630 circuit-breakers can be equipped with motorised operating mechanisms for remote opening and

closing during operation

All remote-controlled mechanisms are equipped with a manual operation for maintenance purposes



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SIEMENS

Front-operated rotary operating mechanism:

Sentron 3VT MCCB : Rotary operating mechanism

These operating mechanisms have been designed for

direct mounting to the circuit-breaker

degree of protection IP30, black

interlock with compartment door available

key lock for circuit-breaker in open position



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SIEMENS

Door-coupling rotary operating mechanism:

These operating mechanisms have been designed for complete

installation in doors and covers

degree of protection IP30, black, with handle

extension shaft and front-operated rotary operating

mechanism for circuit-breakers

interlock with compartment door is available

Sentron 3VT MCCB : Rotary operating mechanism



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SIEMENS

Sentron 3VT MCCB : Order Number Structure



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SIEMENS

type frame current size range

3VT85.

Sentron 3VT MCCB : Frame Sizes / Families

3VT8 0 VT63 63A 10 - 63A

3VT8 1 VT100 100A 32 - 100A

3VT8 2 VT160 160A 22,4 - 160A

3VT8 3 VT250 250A 112 - 250A

3VT8 4 VT400 400A 172 - 400A

3VT8 5 VT630 630A 400 - 630A



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SIEMENS

Sentron 3VT MCCB : Rated Current VT63 / VT100 / VT160

3VT8

-

5 6 7

2 0 3 - 32A

2 0 5 - 50A

2 0 4 - 40A

2 0 6 - 63A

2 0 8 - 80A

2 1 0 - 100A

2 1 2 - 125A

2 1 6 - 160A

VT160VT100

1 0 3 - 32A

1 0 5 - 50A

1 0 4 - 40A

1 0 6 - 63A

1 0 8 - 80A

1 1 0 - 100A

VT63

0 1 0 - 10A

0 2 0 - 20A

0 1 6 - 16A

0 2 5 - 25A

0 3 2 - 32A

0 4 0 - 40A

0 5 0 - 50A

0 6 3 - 63A



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SIEMENS

Sentron 3VT MCCB : Rated Current VT250 / VT400 / VT630

3VT8

-

5 6 7

4 4 0 - 400A

4 3 1 - 315A

4 2 5 - 250A

VT400

3 1 6 - 160A

3 2 0 - 200A

3 2 5 - 250A

VT250

5 4 0 - 400A

5 5 0 - 500A

5 6 3 - 630A

VT630



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SIEMENS


Breaking capacities

1 = standard N2 = high H3 = very high L*

8.

3VT8

-

* Available for VT630 only



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SIEMENS

Sentron 3VT MCCB : Trip Units – System Protection

A: TM, 3- and 4-pole, system protection – LI(N), L non-adjustable, I non-adjustable

B: TM, 3- and4-pole, system protection – LI(N) , L adjustable, I non-adjustable

9.

3VT8

-



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SIEMENS

Sentron 3VT MCCB : Trip Units – Motor Protection

C: TM, 3-pole, motor protection – LI, L non-adjustable, I non-adjustable

D: TM, 3-pole, motor protection – LI , L adjustable, I non-adjustable

9.

3VT8

-



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SIEMENS

Sentron 3VT MCCB : Trip Units – Microprocessor based

E: ETU, 3- and 4-pole, system or motor protection – LSI(NG),

L adjustable, S adjustable, I adjustable, G adjustable ; only for frame sizes 250A, 400A and 630A

9.

3VT8

-



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SIEMENS

Sentron 3VT MCCB : Number of poles / main contacts / auxiliary releases / auxiliary switches

• 3 = 3-pole• 4 = 4-pole

Type of Mounting and Main Connection System

Language of Documentation

Undervoltage release ORShunt TripORAuxiliary / Alarm Switches

3VT8

-12.

-13. 14. 15. 16.



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SIEMENS

• VT is the only Global range available in M3 market

• Compact size

• Plug-in

• Draw-out

• Motorised

Sentron 3VT MCCB : Summary

Contd…



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SIEMENS

• Microprocessor based (LSIG)

• Fixed and Adjustable thermal magnetic trip unit

• 4th Pole 100% rated

• Neutral Protection

Sentron 3VT MCCB : Summary

siemens 3vt mccb

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