ESS20-003-DC24V-10A ETA Electronic circuit breaker
Electronic circuit breaker with def. current limiter
Manual on/off switch (pressure/pressure actuation)
Operating voltage DC 24 V
Rated current 10A
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The ESS20-0.. electronic circuit breaker ensures selective protection of all load circuits that are supplied by a DC 24 V power supply unit.
DC 24 V switching power supply units (10 A...40 A) are frequently used in automation technology. However, in the event of an overload, they regulate the DC 24 V output voltage, which is intended to supply all connected loads. This means that a fault occurs in a single load in a system and the supply voltage collapses in all other load circuits. In addition to an undefined fault condition, this often means that the entire system comes to a standstill.
Selectivity in this context therefore means that the ESS20-0... reacts faster than the switching power supply to the overload or short-circuit condition in a load circuit. This is ensured by the combination of active electronic current limiting and proven circuit breaker technology including galvanic isolation
. The ESS20-0.. limits the possible overcurrent to 1.8 or 1.5 times the selected rated current. This makes it possible to switch on capacitive loads up to 75,000 μF and lamp loads, but it only switches off in the event of an overload or short circuit.
The ESS20-0... rated current is available in fixed values of 0.5 A...10 A and in the adjustable variants 1 A/2 A or 3 A/6 A to adapt to the load conditions. A two-colour LED and an integrated
signal contact indicate the operating and fault status.
The small width of just 12.5 mm and the pluggability of the ESS20-0.. on the E-T-A power distribution units Module 17plus and SVSxx (for ESS20-003) guarantee space-saving and fast top-hat rail mounting of the components in the control cabinet.
Key features:
-
Selective load protection with galvanic isolation in the event of a fault
-
All load types can be connected (small DC motors etc. on request)
-
Active current limitation typ. 1.8 x IN or typ. 1.5 x IN (IN = 8 A or 10 A) when switching on capacitive loads up to 75,000 μF and
in the event of overload/short circuit -
Electronic switch-off characteristic
-
Safe overload switch-off from 1.1 x IN, even with long load cables or low cable cross-sections (see Table 2)
-
Rated current selectable in fixed currents 0.5 A...10 A or adjustable in 2 stages (1 A/2 A or 3 A/6 A) using a switch on the device
-
Manual on/off switch (pressure/pressure actuation)
-
Clear signalling
-
Width per channel only 12.5 mm
-
Can be plugged into bayable power distribution module 17plus or
power distribution system
SVSxx for ESS20-003
(see product group power distribution systems)
Technical data:
| operating data | |
| operating voltage UB | dC 24 V (18...32 V) |
| rated current IN | fixed currents: 0.5 A, 1 A, 2 A, 3 A, 4 A, 6 A, 8 A, 10 A adjustable: 1 A/2 A or 3 A/6 A |
| current consumption I0 | typ. 13 mA |
| tripping current (bimetal) | typ. 0.3 A (only in the event of a fault, until galvanic switch-off) |
|
signalling of the operating status via |
|
|
reverse polarity protection of UB |
internal bimetal (fail-safe element) triggers, push-button moves to the off position |
| load circuit | |
| load output | power - MOSFET switching output plus switching |
|
maximum load data for series mounting |
see table 1 |
| voltage drop UON with IN | see table 1 |
| overload cut-off (ÜL) | typ. 1.1 x IN (1.05...1.35 x IN)N |
| short-circuit current IK |
active current limitation see table 1 |
|
switch-off times |
see time/current characteristic typ. 5 s for Iload > 1.1 x IN typ. 5 s...100 ms for Iload > 1.8 x IN (or 1.5 x IN) |
| temperature switch-off |
Internal temperature monitoring with galvanic isolation |
|
undervoltage monitoring |
with hysteresis, no reset necessary: |
| switch-on delay tStart | typ. 0.3 s after each switch-on and after the application of UB |
| galvanic isolation of the load circuit | is single-pole (switch contact) - by pressing the blue pushbutton - after electronic fault switch-off (overload, short circuit) - in the event of reverse polarity |
| freewheeling circuit | external freewheeling diode recommended for inductive load |
| parallel connection of several load outputs | not permitted |
| error message, signal output | |
| error message F | potential-free signal contact, switches simultaneously with galvanic isolation max. DC 30 V/0.5 A, min. 10 V/10 mA |
| signal output ESS20-001 (individual signalling normally open contact) |
blue push-button is in the on position: Signal contact SC-SI is closed Blue push-button is in the off position: Signal contact SC-SI is open |
| signal output ESS20-003 (collective signalling) |
control input (IN+/IN-) is electrically isolated from the load circuit (optocoupler) Voltage max. + DC 32 V High > DC 12 V ≤ DC 32 V (switch-on) Low ≤ DC 5 V > 0 V (switch-off) Current consumption typ. 3...9 mA (DC +12 V...32 V) |
| visual display | lED lights up ORANGE (until galvanic isolation) |
| general data | |
| back-up fuse for ESS20-0.. | not necessary, as a redundant fail-safe element is integrated (thermal E-T-A circuit breaker). When the fail-safe element is triggered, the pushbutton is in the OFF position |
| flat plug connections | 6.3 mm in accordance with EN 60934-6.3-0.8 |
| housing material | plastic |
| enclosure fastening | pluggable in stackable power distribution units Module 17plus and SVSxx from E-T-A |
| ambient temperature | 0...+50 °C (without condensation, see EN 60204-1) |
| storage temperature | -20...70 °C |
| humidity Heat | 96 hours/95 % relat. Humidity/40 °C according to IEC 60068-2-78, Test Cab. Climate class 3K3 according to EN 60721 |
| vibration resistance | 3 g, test according to IEC 60068-2-6, test Fc |
| protection class | enclosure IP30 DIN 40050 Terminals IP30 DIN 40050 |
| eMC requirements (EMC Directive, CE marking) |
interference emission: EN 61000-6-3 Interference immunity: EN 61000-6-2 |
| insulation coordination (IEC 60934) |
0.5 kV/pollution degree 2 Reinforced insulation in the actuation area |
| insulation voltage | dC 500 V Between the galvanically isolated areas: load circuit in off-state, signal input and signal outputs |
|
dielectric strength |
(see also dimensional drawing) Test voltage AC 1 000 V Test voltage AC 500 V Test voltage AC 500 V |
|
approvals |
cE mark UL 1077, File E67320 Supplementary Protectors for use in Electrical Equipment IEC/EN 60934 (fixed current ratings) |
| insulation resistance (off-state) |
> 100 MΩ (DC 500 V) between LINE (+) - LOAD (+) |
| installation dimensions (W x H x D) | see dimensional drawing 12.5 x 105 x 60 mm |
| weight | approx. 65 g |
Approvals:
| test centre | rated voltage | rated current range | Test standard |
| vDE (EN 60934) | dC 32 V | 0,5...10 A | EN 60934 |
| uL 1077 in preparation | dC 28 V | 0,5...10 A | UL 1077 |
Table 1: Voltage drop, current limitation, max. load current
|
Rated current |
typ. Voltage drop |
active current |
max. load current |
|
|
TU = 40 °C |
TU = 50 °C |
|||
|
0,5 A |
100 m V |
1.8 x IN |
0.5 A 0.5 A |
0,5 A |
|
1 A |
140 mV |
1.8 x IN |
1 A |
1 A |
|
2 A |
180 m V |
1.8 x IN |
2 A |
2 A |
|
3 A |
140 m V |
1.8 x IN |
3 A |
3 A |
|
4 A |
190 m V |
1.8 x IN |
4 A |
4 A |
|
6 A |
280 m V |
1.8 x IN |
6 A |
5 A |
|
8 A |
220 mV |
1.5 x IN |
8 A |
7 A |
|
10 A |
280 mV |
1.5 x IN |
10 A |
9 A |
|
1 A/2 A |
140 mV/280 mV |
1.8 x IN |
1 A/2 A |
1 A/2 A |
|
3 A/6 A |
140 mV/280 mV |
1.8 x IN |
3 A/6 A |
3 A/5 A |
| Item name | ESS20-003-DC24V-10A ETA Electronic circuit breaker |
|---|---|
| SKU | 24-00704 |
| Weight | 0.087500 |
| Signal input | 0 without signal input |
| Country of manufacture | Germany |
| Connection type Main connections | P10 flat plug DIN 46244-A6.3-0.8 |
| Signal output | 3 Signal contact changer (collective signalling) |
| Series | ESS20 |
| Version | 0 mit galvanischer Trennung im Fehlerfall |
| Manufacturer | E-T-A |
| Manufacturer number | ESS20-003-DC24V-10A |
| Actuating element | W Standard rocker switch |
| Undervoltage module | none |
| Operating voltage | DC 24 V |
| Number of poles | 1-pole thermally protected |
| Mounting type | S Pluggable |
| Characteristic | Medium time-lag tripping characteristic (standard) |
| Commodity code | 85362010 |
| Traub order number | ESS20-003-DC24V-10A |
E-T-A
Elektrotechnische Apparate GmbH
Industriestraße 2-8
90518 Altdorf b. Nürnberg
Deutschland
order@e-t-a.de
e-t-a.de