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Description – ESX300S

The electronic circuit protector

ESX300-S has been designed for

protection and monitoring systems in telecommunications. Focus

application of this device is the minus switching of loads widely

used in telecommunications in power supply systems with rated

voltage DC -48 V and DC -60 V. The additionally available overcurrent

protection, realised by means of electronic current limitation and

electronic disconnection, reliably prevents the destruction of

electronic sub-assemblies or load lines by overload or short circuit. In

addition, the electronic current limitation helps to prevent high

currents flowing in the event of a short circuit, which could cause

undesired voltage dips and lead to system crashes.

Major applications are power distribution systems in telecommuni-

cations engineering. The electronic circuit protectors type ESX300-S

are fitted into 19" or ETSI racks and are available in various current

ratings from 2 A to 24 A.

Benefits

l

Availability on the highest level due to the reduction of the failure

probability

l

Increasing the reliability of the systems (selectivity)

l

Hazard reduction by active and remotely controlled disconnection

of equipment, triggered by warning messages such as fire and/

or water (optional)

l

Decreasing fire hazard by selective disconnection

l

Reliable disconnection even with long cable lengths

l

Reduced maintenance because of remotely controllable power

reset – no maintenance on site required

l

Integral fail-safe-element

l

Status indication by LEDs

l

BUS-interface (optional)

Order number

Operating data

Operating voltage

DC -48 V and DC -60 V (-37...-72 V)

2 A / 5 A / 8 A / 12 A / 16 A / 20 A / 24 A

typically 16 mA

Trip current

Low voltage monitoring

factory setting:

type DC -36 V

Excess voltage

monitoring

factory setting:

type DC -73 V

Load circuit

Load output

power MOSFET switching output (minus

switching), no physical isolation

Mounting position

vertical

Cooling

convection cooling

Trip times

typically <20 ms at short circuit

typically <30 sec. at overcurrent

Temperature

disconnection

Inductive load

external free wheeling diode recom-

mended

Capacitive load

max. 7.000µF see table 2

Auxiliary circuit (option)

Contact

potential-free contact, break contact

Max. switching voltage

DC 72 V

Max. switching current

1 A

Rupture capacity

60 W / 62.5 VA

Control interface (option)

Interface type ESX300-S ELBus® interface

General data

Ambient temperature

-20 °C...+60 °C without condensation

see EN50240-1

Storage temperature

-20 °C...+70 °C

Back-up fuse

not required due to integral fail-safe

element.

Leakage current in the

off state

typically 1 mA

Terminals

blade terminals

DIN 46244-A 6.3-0.8 and 2.8- 0.5

Style

rack without enclosure

Degree of protection

IP00 DIN 40050

EMC requirements

to EN 61000-6-3 &

EN 61000-6-2

ESD

4 kV/air 8 kV

Humidity

96 hours at 95% RH,

40 °C, to IEC 60068-2-78,

climate class 3K3 to EN60721

Vibration

3 g to IEC 60068-2-6,

Approvals

CE logo

to EN 61000-6-3 &

EN 61000-6-2 and UL 2367

Mass

typically 50 g

Type

Version

Interfaces

PDB-N-CPxxx-xx-S

Voltage range

Additional functions

Rated current

2 A

5 A

8 A

12 A

16 A

20 A

24 A

ESX300 - S-

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