ESS20-003-DC24V-0,5A ETA Electronic circuit breaker
Electronic circuit breaker with def. current limiting
Manual on/off switch (pressure-pressure actuation)
Operating voltage DC 24 V
Rated current 0.5A
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The ESS20-0.. electronic circuit breaker ensures selective protection of all load circuits supplied by a DC 24 V power supply unit.
DC 24 V switching power supply units (10 A...40 A) are very frequently used in automation technology. However, in the event of an overload, they regulate the DC 24 V output voltage that is to supply all connected loads. This means that a fault occurs in a single load of 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 switch-mode power supply to the overload or short-circuit condition in a load circuit. This is ensured by the combination of active electronic current limitation 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 they are only switched off in the event of an overload or short-circuit.
For adaptation to the load conditions, 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. A two-colour LED as well as an integrated
signal contact indicate the operating and fault status.
The small construction width of only 12.5 mm and the pluggability of the ESS20-0.. on the E-T-A current distributors Modul 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 types of loads 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 case of overload/short circuit -
Electronic switch-off characteristic
-
Safe overload cut-off from 1.1 x IN even with long load lines or low line cross-sections (see Table 2).
-
Rated current selectable in fixed amperages 0.5 A...10 A or adjustable in 2 steps (1 A/2 A or 3 A/6 A) by means of switch on the unit
-
Manual on/off switch (push-push actuation)
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Clear signalling
-
Construction 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 disconnection) |
|
signalling of operating status via |
|
|
reverse polarity protection of UB |
internal bimetal (fail-safe element) trips, push-button goes to off-position |
| load circuit | |
| load output | power - MOSFET switching output positive switching |
|
maximum load data for series mounting |
see Table 1 |
| voltage drop UON at 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 characteristics typ. 5 s at Iload > 1.1 x IN typ. 5 s...100 ms at Iload > 1.8 x IN (or 1.5 x IN) |
| temperature shut-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 application of UB |
| galvanic isolation of the load circuit | is single-pole (switch contact) - by push-push actuation of the blue push-button - after electronic fault switch-off (overload, short-circuit) - in case of polarity reversal |
| free-wheeling circuit | external freewheeling diode recommended for inductive load |
| parallel connection of several load outputs | not permissible |
| 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 (single signal NO 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 galvanically 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 indication | lED lights up ORANGE (until galvanic isolation) |
| general data | |
| backup 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 push-button is in the OFF position |
| flat terminals | 6.3 mm according to EN 60934-6.3-0.8 |
| enclosure material | plastic |
| enclosure fixing | can be plugged into bayable power distributors Module 17plus and SVSxx from E-T-A |
| ambient temperature | 0...+50 °C (without condensation, cf. EN 60204-1) |
| storage temperature | -20...70 °C |
| humidity heat | 96 hrs./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 acc. to IEC 60068-2-6, test Fc |
| protection class | enclosure IP30 DIN 40050 Terminals IP30 DIN 40050 |
| eMC requirements (EMC directive, CE mark) |
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 operating area |
| insulation voltage | dC 500 V Between 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-0,5A ETA Electronic circuit breaker |
|---|---|
| SKU | 24-01115 |
| Weight | 0.085600 |
| Version | 0 mit galvanischer Trennung im Fehlerfall |
| Design: Communication, interface | 01 analog Signal |
| Country of manufacture | Germany |
| Signal output | 3 Signal contact changer (collective signalling) |
| Connection type Main connections | P10 flat plug DIN 46244-A6.3-0.8 |
| Series | ESS20 |
| Signal input | 0 without signal input |
| Actuating element | W Standard rocker switch |
| Undervoltage module | none |
| Operating voltage | DC 24 V |
| Number of poles | 1-pole thermally protected |
| Rated current range | 0,5A |
| Mounting type | S Pluggable |
| Characteristic | Medium time-lag tripping characteristic (standard) |
| Additional function | 0 ohne |
| Traub order number | ESS20-003-DC24V-0,5A |
| Commodity code | 85362010 |
| Manufacturer | E-T-A |
| Manufacturer number | ESS20-003-DC24V-0,5A |
