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Electronic circuit breaker EBU

1638

4

Type No.

Mounting method

T

rail mounting

Design

Number of poles

1

1-pole, 1-pole protected electronically

2

2-pole, 1-pole protected electronically

Version

0

with physical isolation by means of MCB 4230-T

Signal input

0

without signal input

Signal output

3

auxiliary change-over contact

Operating voltage

AC 230 V

voltage rating AC 230 V

Characteristic curve

B

C

Current rating range

6 A

10 A

16 A

EBU10 -T A 1 - 0

0

3 - AC 230 V - C - 10 A

ordering example

Preferred types Characteristic curve C

Description

Typical applications

Benefits

Technical data

The electronic circuit protector type EBU (Electronic Breaker Unit)

provides selective overcurrent protection in AC 230 V UPS systems.

It consists of an MCB approved for short circuit interruptions up to

10 kA and of an add-on electronic circuitry, taking over measuring

and evaluation tasks. The product is available with the typical MCB

ratings 4 A, 6 A, 10 A and 16 A with B and C characteristics and is

directly operated at the output of the corresponding UPS.

UPS units often do not supply sufficient power in the event of a short

circuit to trip standard MCBs. The electronic AC circuit breaker can

individually be adjusted to the UPS unit and will therefore reliably trip

in the event of a short circuit. Optimal adjustment of the load’s current

rating allows detection and disconnection of an overload in the load

circuit. This helps exclude the fatal disconnection of the entire output

voltage of the UPS unit.

The Electronic Breaker Unit EBU allows a reduction in size of one

third for UPS units because power reserves do no longer have to

be kept available for tripping. The EBU increases system availability,

reduces overall costs and simplifies electrical planning.

Electronic overcurrent protection by means of electronic AC circuit

breakers is ideally suited to the selective protection of uninterruptible

power supplies (UPS) in industrial plants. EBU ensures the power

safety provided by AC UPS systems.

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Enhanced system availability through effective protection

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Reduction of overall costs by a 1/3 more efficient rating

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Easy planning with a variable overcurrent protection

Order numbering code

AC 230 V ±10%

4 A, 6 A, 10 A, 16 A

Frequency

50 Hz

Rated insulation voltage

AC 250 V

Rated voltage and

current rating range of

the auxiliary contact

DC 110 V / 0.3 A – 33 W

DC 30 V / 1.1 A – 33 W

AC 120 V / 0.5 A – 60 VA

AC 240 V / 0.25 A – 60 VA

Min. load of aux. contact

(valid for standard

industrial surroundings,

no aggressive gases)

3 mA at 24 V

Reference ambient

temperature

-35 °C...+60 °C

Method of operation

S-type

Mode of trip / degree

of trip-free behaviour

mechatronic / trip free

(positively trip-free)

Max.* cable length (outgoing wire) from generator to EBU

Typical electrical operational values

Insulation co-ordination

(except signalling)

Rated impulse voltage 4 kV;

overvoltage category III; pollution

degree 2; reinforced insulation in the

actuating area

Insulation co-ordination

of the signalling

Rated impulse voltage: 2.5 kV

Note: The Si contacts are not suitable for connection to SELV

control voltage.

Insulation resistance

> 100 MOhm (DC 500 V)

Degree of protection

II

Endurance

mechanical (contacts)

electronic

potentiometer

20,000 cycles

> 15 years within specification

min. 1000 steps

B6

B10

B16

C4

C6

C10

C16

31 m/

19 m/

12 m/

24 m/

17 m/

10 m/

6 m/

4

6

10

16

V

0,77

0,53

0,35

0,3