Electronic Circuit Breaker ESS20-0...
Description
Electronic circuit breaker type ESS20-0.. is designed to ensure
selective disconnection of individual loads in systems which are
powered by a DC 24 V switch-mode power supply.
DC 24 V power supplies, which are widely used in industry today, will
shut down the output in the event of an overload with the result that
one faulty load in the system can lead to complete disconnection of
all loads. As well as an unidentified failure this also means stoppage
of the whole system.
Through selective disconnection the ESS20-0.. responds much
faster to overload or short circuit conditions than the switch-mode
power supply. This is achieved by a combination of active current
limitation and well-proven circuit breaker technology including
physical isolation. The ESS20-0.. limits the highest possible current
to 1.8 or 1.5 times the selected rated current of the circuit breaker.
Thus it is possible to switch on capacitive loads of up to 75,000 µF
lamp loads, but they are disconnected only in the event of an overload
or short circuit.
ESS20-0..
(T
= 25 °C, operating voltage U = DC 24 V)
Technical data
ambient
S
Operating data
For optimal adjustment to the application conditions the current rating
of the ESS20-0.. can be selected in fixed values from 0.5 A...10 A and
in adjustable variants 1 A/2 A or 3 A/6 A. Failure and status indication
are provided by a bicolour LED and an integral signal contact.
Operating voltage US
Current rating IN
DC 24 V (18...32 V)
fixed current ratings: 0.5 A, 1 A, 2 A, 3 A,
4 A, 6 A, 8 A, 10 A
switchable: 1 A/2 A or 3 A/6 A
Power consumption
Trip current (bimetal)
typically 13 mA
The ESS20-0.. features a width of only 12.5 mm and can be plugged
into the E-T-A power distribution socket Module 17plus and SVSxx
(for ESS20-003) ensuring ease of installation and saving space in
control cabinets.
typically 0.3 A
(only in the event of a failure, before physical isolation)
Status indication
by means of
Bicolour LED:
Green: unit is ON, power-MOSFET is
switched on
Orange: in the event of overload or
short circuit until physical isolation
LED not lighted: push button in OFF
position
US patent number: US 6,490,141 B2
Features
potential-free signal contact (change-
over contact)
OFF-position of push button
l
Selective load protection with physical isolation in the event of a fault.
All types of loads can be connected (small DC motors etc. on
request).
Active current limitation (1.8 or 1.5 times rated current IN = 8 A or
10 A) for safe connection of capacitive loads up to 75,000 µF and
on overload/short circuit.
Electronic trip characteristic.
Reliable overload disconnection with 1.1 x IN plus, even with long
l
4
Reverse polarity
protection of US
internal bimetal (fail-safe element) trips,
push button moves into OFF position
l
Load circuit
Load output
Power-MOSFET switching output
(high side switch)
l
l
Max. data of load
load lines or small cable cross sections (see table 2).
Selectable current ratings (fixed values 0.5 A...10 A or two steps:
1 A/2 A or 3 A/6 A).
with side-by-side mounting see table 1
l
Voltage drop at IN
see table 1
l
l
l
l
Overload disconnection
Short-circuit current IK
typically 1.1 x IN (1.05...1.35 x IN)
Manual ON/OFF button (push-push actuation).
Clear status and failure indication.
Width per unit only 12.5 mm.
Plug-in mounting utilising power distribution system Module 17plus
or SVSxx (for ESS20-003), see product group 7.
typically 1.8 x IN / active current
limitation
Trip time
for physical isolation
see time/current characteristics
typically 5 sec at Iload > 1.1 x IN
for electronic disconnection typically 5 sec...100 ms at Iload > 1.8 x IN
or 1.5 x IN
Approvals
Temperature disconnection internal temperature monitoring with
physical isolation
Authority
Norm
Voltage ratings
Current ratings
Low voltage monitoring
load output
OFF at US < 7 V
ON at US >16 V
VDE
EN
60934
DC 32 V
0.5 A…10 A
Starting delay tstart
typically 0.3 sec after every switch-on
and after applying US
UL
UL 1077 DC 28 V
0.5 A…10 A
Disconnection of load circuit single pole (switch contact)
- by push-push actuation of the blue
push button
Notes
- upon electronic fault disconnection
(overload, short circuit)
- with reverse polarity
l
The user should ensure that the cable cross sections of the relevant
load circuit are suitable for the current rating of the ESS20 used.
Automatic start-up of machinery after shut down must be prevented
(Machinery Directive 98/37/EG and EN 60204-1). In the event of
a short circuit or overload the load circuit will be disconnected
electronically by the ESS20.
l
Free-wheeling circuit
external free-wheeling diode
recommended with inductive load
Several load outputs must not be connected in parallel.
1646
www.e-t-a.de
1
5秒后页面跳转
MAX6675资料手册参数详解、引脚配置说明
LM258引脚图及功能介绍、主要参数分析
CD4052资料手册参数详解、引脚配置说明
一文带你了解TPS5430资料手册分析：参数介绍、引脚配置说明
微信公众号
抖音公众号
浙公网安备 33010502006866号 浙ICP备10014259号-119
营业执照ICP证
数据手册
如果您发现信息不准确，
