Electronic Circuit Breaker ESS

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1 Description Electronic circuit breaker type ESS0-0.. is designed to ensure selective disconnection of individual loads in systems which are powered by a DC 4 V switch-mode power supply. DC 4 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 ESS0-0.. responds much faster to overload or short circuit conditions than the switch-mode power supply. This is achieved by a combination of active limitation and well-proven circuit breaker technology including physical isolation. The ESS0-0.. limits the highest possible to 1.8 or 1.5 times the selected rated 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. For optimal adjustment to the application conditions the rating of the ESS0-0.. can be selected in fixed values from 0.5 A... A and in adjustable variants 1 A/ A or 3 A/ A. Failure and status indication are provided by a bicolour LED and an integral signal contact. The ESS0-0.. features a width of only 1.5 mm and can be plugged into the E-T-A power distribution socket Module 17plus and SVSxx (for ESS0-003) ensuring ease of installation and saving space in control cabinets. US patent number: US,490,141 B Features l Selective load protection with physical isolation in the event of a fault. l All types of loads can be connected (small DC motors etc. on request). l Active limitation (1.8 or 1.5 times rated I N = 8 A or A) for safe connection of capacitive loads up to 75,000 µf and on overload/short circuit. l Electronic trip characteristic. l Reliable overload disconnection with 1.1 x I N plus, even with long load lines or small cable cross sections (see table ). l Selectable ratings (fixed values 0.5 A... A or two steps: 1 A/ A or 3 A/ A). l Manual ON/OFF button (push-push actuation). l Clear status and failure indication. l Width per unit only 1.5 mm. l Plug-in mounting utilising power distribution system Module 17plus or SVSxx (for ESS0-003), see product group 7. Approvals Authority Norm Voltage ratings Current ratings VDE EN 0934 DC 3 V 0.5 A A UL UL 77 DC 8 V 0.5 A A Notes l The user should ensure that the cable cross sections of the relevant load circuit are suitable for the rating of the ESS0 used. l Automatic start-up of machinery after shut down must be prevented (Machinery Directive 98/37/EG and EN 004-1). In the event of a short circuit or overload the load circuit will be disconnected electronically by the ESS0. ESS0-0.. Technical data (T ambient = 5 C, operating voltage U S = DC 4 V) Operating data Operating voltage U S DC 4 V ( V) Current rating I N fixed ratings: 0.5 A, 1 A, A, 3 A, 4 A, A, 8 A, A switchable: 1 A/ A or 3 A/ A Power consumption typically 13 ma Trip (bimetal) typically 0.3 A (only in the event of a failure, before physical isolation) Status indication Bicolour LED: by means of 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 potential-free signal contact (changeover contact) OFF-position of push button Reverse polarity internal bimetal (fail-safe element) trips, protection of U S push button moves into OFF position Load circuit Load output Power-MOSFET switching output (high side switch) Max. data of load with side-by-side mounting see table 1 Voltage drop at I N see table 1 Overload disconnection typically 1.1 x I N ( x I N ) Short-circuit I K typically 1.8 x I N / active limitation Trip time see time/ characteristics for physical isolation typically 5 sec at I load > 1.1 x I N for electronic disconnection typically 5 sec...0 ms at I load > 1.8 x I N or 1.5 x I N Temperature disconnection internal temperature monitoring with physical isolation Low voltage monitoring load output OFF at U S < 7 V ON at U S >1 V Starting delay t start typically 0.3 sec after every switch-on and after applying U S Disconnection of load circuit single pole (switch contact) - by push-push actuation of the blue push button - upon electronic fault disconnection (overload, short circuit) - with reverse polarity Free-wheeling circuit external free-wheeling diode recommended with inductive load Several load outputs must not be connected in parallel. 015/

2 Technical data (T ambient = 5 C, operating voltage U S = DC 4 V) Fault indication, signal output Fault indications potential-free auxiliary contact change-over (SC-SO / SC-) simultaneously with physical isolation max. DC 30 V / 0.5 A, min. V / ma Signal output ESS0-001 blue push button in ON position: (single signalisation N/O) signal contact SC- is closed blue push button in OFF position: signal contact SC- is open Signal output ESS0-003 blue push button in ON position: (group signalisation N/C) signal contact SC-SO is closed (SC- is copen) blue push button in OFF position: signal contact SC-SO is open (SC- is closed) Visual indication LED lighted in ORANGE (until physical isolation) General data Backup fuse for ESS0-0.. not required because of the integral redundant fail-safe element (thermal E T A circuit breaker) push button in OFF position when fail-safe element has tripped. Blade terminals.3 mm to EN Housing material plastics material Mounting of housing plug-in mounting utilising power distribution system Module 17plus or SVSxx Ambient temperature C (without condensation, see EN 004-1) Storage temperature C Humidity 9 hrs/95 % RH/40 C to IEC , test Cab. climate class 3K3 to EN 071 Vibration 3 g, test to IEC test Fc Degree of protection housing: IP30 DIN terminals: IP00 DIN EMC emission: EN (EMC directive, CE logo) susceptibility: EN 00-- Insulation co-ordination 0.5 kv/ pollution degree (IEC 0934) re-inforced insulation in operating area Dielectric strength (see dimensions) operating area test voltage AC 00 V installation area test voltage AC 500 V load circuit-signal contact test voltage AC 500 V Insulation resistance > 0 MΩ (DC 500 V) (OFF condition) [ LOAD (+)] Approvals CE logo UL 77, File E730 Supplementary Protectors for use in Electrical Equipment IEC/EN 0934 (fixed ratings) Dimensions (W x H x D) 1.5 x 5 x 0 mm Mass approx. 5 g Ordering information Type No. ESS0 Electronic Circuit Breaker with limitation (e.g. typically 1.8 times rated or 1.5 x I N, see table 1) Version 0 with physical isolation in the event of a failure Control input 0 without control input Signal output 1 signal contact N/O (single signalisation) signal contact N/C (single signalisation) 3 signal contact changeover (group signalisation) Operating voltage DC 4 V rated voltage DC 4 V Current rating 0.5 A 1 A A 3 A 4 A A 8 A A 1 A/ A (selectable) 3 A/ A (selectable) ESS DC 4 V - 3 A/ A ordering example (recommended type) Preferred types Preferred types Dimensions 0 Standard ratings (A) / 3/ ESS0-003-DC4V x x x x x x x x x x ESS0-001-DC4V x x x x x x x x x x ON 5 OFF operating area mounting area Table 1: voltage drop, limitation, max. load rating I N typically voltage drop U ON at I N active limitation (typically) max. load at 0 % ON duty T U = 40 C T U = 50 C 0.5 A 0 m V 1.8 x I N 0.5 A 0.5 A 1 A 140 mv 1.8 x I N 1 A 1 A A 180 mv 1.8 x I N A A 3 A 140 mv 1.8 x I N 3 A 3 A 4 A 190 mv 1.8 x I N 4 A 4 A A 80 mv 1.8 x I N A 5 A 8 A 0 mv 1.5 x I N 8 A 7 A A 80 mv 1.5 x I N A 9 A 1 A/ A 140 mv/80 mv 1.8 x I N 1 A/ A 1 A/ A 3 A/ A 140 mv/80 mv 1.8 x I N 3 A/ A 3 A/5 A Attention: when mounted side-by-side without convection the ESS0-0.. should not carry more than 80 % of its rated load with 0 % ON duty because of the integral thermal circuit breaker.,3 adjustable,8 x,8 = 40,8 Label LED reverse plug-in protection blade terminals EN This is a metric design and millimeter dimensions take precedence ( mm ) inch 1, 1,5 1, /1

3 Terminal wiring diagrams (e. g. adjustable 3 A/ A) Basic circuit diagrams (e. g. adjustable 3 A/ A) ESS ESS (single signalisation N/O) ESS0-00- Gnd (-) ESS0-001-DC4V-3A/A SC Gnd (-) ESS0-00-DC4V-3A/A SC S0 S0 LOAD (+) LOAD (+) DC 4 V ON / OFF status indication green / orange rated I N DC 4 V ON / OFF status indication green / orange rated I N 3 A A 3 A A R sense SO SC LOAD (+) signal output load output ESS (single signalisation N/C) R sense control short circuit / overload measurement control short circuit / overload measurement electronic control unit GND (-) electronic control unit SO SC LOAD (+) signal output load output GND (-) ESS ESS (group signalisation with change over) Gnd (-) ESS0-003-DC4V-3A/A SC S0 LOAD (+) DC 4 V ON / OFF status indication green / orange rated I N 3 A A R sense control short circuit / overload measurement electronic control unit SO SC LOAD (+) signal output load output GND (-) 015/

4 Time/Current characteristic curve (T A = 5 C) trip time in seconds disconnection typically 1.1 x I N 1.8 x I N limitation typically 1.8 x I N times rated *1) limitation typically 1.8 x I N times rated at I N = 0.5 A... A limitation typically 1.5 x I N times rated at I N = 8 A... A I K l The trip time is typically 5 s in the range between 1.1 and 1.8 x I N *1). l Electronic limitation starts at typically 1.8 x I N *1) which means that under all overload conditions (independent of the power supply and the resistance of the load circuit) the max. overload until disconnection will not exceed 1.8 x I N *1) times the rating. Trip time is between 0 ms (short circuit I K ) and 5 sec (at overload with high line attenuation). l Without the limitation activated at typically 1.8 x I N *1) a considerably higher overload would flow in the event of an overload or short circuit. l After detection of an overload or short circuit the LED changes colour from GREEN to ORANGE. The LED will no longer be lighted after the circuit breaker has tripped. l Resetting the circuit breaker is not possible before the integral bimetal has cooled down (approx. sec). Table : Reliable trip of ESS0 Reliable trip of ESS0 with different cable lengths and cross sections Resistivity of copper 0 = (Ohm x mm ) / m U S = DC 19. V (= 80 % v. 4 V) voltage drop of ESS0 and tolerance of trip point (typically 1.1 x I N = x I N ) have been taken into account. ESS0-selected rating I N (in A) 3 e. g. trip I ab = 1.5 x I N (in A) ESS0 trips after s R max in Ohm = (U S / I ab ) The ESS0 reliably trips from 0 Ohm to max. circuitry resistance R max Cable cross section A in mm cable length L in meter (= single length) cable resistance in Ohm = (R 0 x x L) / A Example 1: max. length at 1.5 mm and 3 A 14 m Example : max. length at 1.5 mm and A m Example 3: mixed wiring: R1 = 40 m in 1.5 mm and R = 5 m in 0.5 mm : (Control cabinet sensor/actuator level) R1 = 0.95 Ohm, R = 0.71 Ohm Total (R1 + R) = 1. Ohm /1

5 Electronic Circuit Breaker ESS Accessories for ESS0-0.. Single mounting sockets (up to 1 A max. load) 17-P-Si 17-P70-Si (with adapter) 17-P-Si P70-Si-005 -way mounting socket 3-P-Si -way mounting socket 3-P-Si polarized blade terminal DIN 444-A (QC.50) -P blade terminal DIN 444 part C profile (.8-0.8) (QC x.1) -P polarized blade terminals DIN 444-A (QC.50) slot for fitting labels from Phoenix, Weidmüller x.8 = 40.8 x.8 = polarization recess depth mm ( in.) symmetrical rail EN x7.5 adapter X G-profile EN G3 Phoenix terminal AKG 35 max.cross section 35 mm (AWG ) cylinder head screw washer M4x4 ISO107 A 4.3 DIN 15 nickel plated nickel plated Insulating sleeving for busbar (-way) Y (k) 1 4 (i) (k) 1 4 (i) polarized recess max. 30 max Connector bus links -P X / 1.5 mm, (AWG 1), brown (up to 13 A max. load) X 588 0/.5 mm, (AWG 14), black (up to 0 A max. load) X /.5 mm, (AWG 14), red (up to 0 A max. load) X /.5 mm, (AWG 14), blue (up to 0 A max. load) 3.5 Busbar (-way) (supplied as a complete package) for type 17 socket (for max. 0 A continuous load), more positions available on request X with terminal X without terminal ~70 ~.7 Dimensions 0 quick-connect tabs.3 (.50) DIN 447 tinned brass, insulated.079 M4 female connector Cu rail, tin-plated Module 17plus For technical data see section Power Distribution Systems 1,5 pressure-relief joint (1.1mm (.043 in.) thick constriction 147,7 ESS0-xxx-DC4V-x Modul 17plus This is a metric design and millimeter dimensions take precedence ( mm ) inch 5 5 slot for busbar symmetrical rail EN x right-side terminal block 1 Line 1 Line module left-side terminal block All dimensions without tolerances are for reference only. In the interest of improved design, performance and cost effectiveness the right to make changes in these specifications without notice is reserved. Product markings may not be exactly as the ordering codes. Errors and omissions excepted. 015/1 -

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