Electronic circuit breaker ESS30-Sxxx-DC24V Description The electronic circuit breaker ESS30-S with physical isolation is the globally unique electronic overcurrent protection for DC 24 V applications as a low energy breaker. For the use in decentralised and centralised power supply units, it meets the requirements to DIN EN 60934, to UL1077 as a Supplementary Protector and to UL 1310 as Class2 power unit (NEC class2). The compact device can be plugged into the terminal blocks 17plus and 18plus and into the SVS power distribution systems and ensures quick and easy installation. The ESS30-S is only 12.5 mm wide and selectively protects all DC 24 V load circuits. This is achieved by a combination of active electronic current limitation in the event of a short circuit and overload disconnection at typically 1.2 times rated current. DC 24 V switch-mode power supplies are widely used in automation today. In the event of an overload, however, ESS30-S... they turn down the output voltage which is intended to power all connected loads. So if there is a failure in a single load of the system, the supply voltage will break down also in all other load circuits. Not only does this frequently cause undefined fault conditions, but it can even lead to machine stoppages or system downtimes. The max. possible overcurrent is limited to typically 1.2 times rated current (see table 1). Switching capacitive loads up to 40,000 F is possible without any problems. For adjustment to the load conditions the current rating can be selected in fixed values from 0.5 A to 10A and adjustable versions 1A/2A or 3A/6A are also available. Visual status indication is by means of a multicoloured LED and by integral signal outputs. The manual ON/OFF switch on the device itself allows start-up of certain individual load circuits and reset after disconnection on grounds of overcurrent. Features Your Benefits l l Plug-in mounting on power distribution modules 17plus,18plus Inventory costs are cut, because one model covers two and SVSxx current ratings l l Physical isolation in the event of a failure Flexibility is enhanced through plug-in design and ease of l Active linear current limitation current rating adjustment 4 l l Capacitive loads up to 40,000 F Cost-savings because the breakers up to 3.6A approved to l Fixed current ratings 0.5 A...10 A (0.5A3.6A NEC Class 2) UL12310 (NEC Class 2) replace the previously used expensive l 2 steps (1A/2A or 3A/6A) can be adjusted on the device by switch mode power supplies l means of a switch Saves energy costs through 1/3 lower power loss compared l Approvals: UL, NEC Class 2, VDE to competitive solutions. l Increases system availability through clear failure detection and signalling Preferred types for more details on all configurations please see order numbering code Preferred types are E-T-A products most frequently used by E-T-A volumes. Our preferred types are supplied at shorter lead times than customers. We manufacture E-T-A preferred types in particularly high non-standard versions. Preferred types Preferred ratings (A) ESS30-S 0.5 1 2 3.6 3 4 6 8 10 2 3 3.6 (CL2) (CL2) (CL2) ESS30-S003-DC24V x x x x x x x x x Approvals Information online For access to the latest documents please follow: www.e-t-a.de/e353 NEC Class2 Compliances 2044 www.e-t-a.de 1Electronic circuit breaker ESS30-Sxxx-DC24V Electronic circuit breaker ESS30-Sxxx-DC24V Technical data (T = 25 C, U = DC 24 V) Technical data (T = 25 C, U = DC 24 V) amb B amb B For further details please see: www.e-t-a.de/ti e Signal output ESS30-S001 blue push button is in ON position: Operating data make contact aux. contact 13/14-12 is closed blue push button is in OFF position: Operating voltage U DC 24 V (18...30 V) B aux. contact 13/14-12 is open Current ratings I fixed ratings: N Signal output ESS30-S002 blue push button is in ON position 0.5 A 1 A 2 A 2 A CL2 3 A 3 A CL2 3,6 A brake contact aux. contact 13/14-12 is open 3,6 CL2 4 A 6 A 8 A 10 A blue push button is in OFF position: Adjustable current ratings: aux. contact 13/14-12 is closed 1 A/2 A 3 A/6 A Signal output ESS30-S003 blue push button is in ON position: Standby current I in ON condition: typically 4 mA 0 changeover contact aux. contact 13-14 is closed, with adjustable versions typically 5.5 mA 13-12 is open Trip current (bimetal) typically 0.4 A (only under fault condition, blue push button is in OFF position: till physical isolation) aux. contact 13-14 is open, 13-12 is closed l Visual status multicoloured LED: Visual status indication indication green: - device is ON (S1 = ON) LED green U is applied and switch S1 is ON and no B load circuit connected overload, no short circuit orange: l OFF condition LED off device switched off (switch S1 is OFF) - overload or short circuit until l load circuit physically isolated electronic disconnection l no operating voltage UB red: LED orange overload conditions > 1.2 times rated - device switched OFF electr onically current until, electronic disconnection load circuit OFF LED red electr onic disconnection upon overload, - undervoltage (U < 14 V) B short circuit or undervoltage OFF: General data - manually OFF (S1 = OFF) Fail-safe element back-up fuse for ESS30-S.. not required load circuit physically isolated due to integral redundant fail-safe or device is dead-voltage element (protective element) l Potential-free signal contact Blade terminals 6.3 mm to EN 60934-6.3-0.8 l On/off position of the switch S1 Housing material moulded Load circuit Mounting pluggable into power distribution systems Load output power MOSFET switching output for side-by-side mounting (module 17plus (plus switching) or 18plus by E-T-A) Overload and short typically 1.2 x I N Ambient temperature 0...+60 C (without condensation, cf. EN circuit disconnection with active current limitation 4 60204-1) Trip times for see time/current characteristic Storage temperature -40...+70 C electronic disconnection overload trip time typically 500 ms Humidity 96 hours at 95 % RH, 40 C short circuit trip time depending on to IEC 60068-2-78,-Cab current rating (see table 1) climate class 3K3 to EN60721 for physical isolation typically 5 s (3 ... 9 s) Vibration 3 g test to IEC 60068-2-6, test Fc Temperature disconnection inter nal temperature monitoring with Degree of protection operating area IP30 EN 60529 physical isolation installation area IP00 EN 60529 Undervoltage with hysteresis, no reset required: EMC requirements noise emission: EN 61000-6-3 monitoring OFF at U < 14 V B (EMC directive, CE logo) susceptibility: EN 61000-6-2 of load output ON at U > 17 V B Insulation co-ordination 0.5 kV / pollution degree 2 Switch-on delay t typically 2 ms after each ON operation, Start (IEC 60934) reinforced insulation in operating area reset and after applying of U B Dielectric strength (see also dimensions) Capacitive loads up to 40,000 F operating area test voltage AC 1000 V Free-wheeling diode exter nal free-wheeling diode installation area test voltage AC 500 V recommended for inductive load load circuit auxiliary contact test voltage AC 500 V Parallel connection of several load outputs not allowed Insulation resistance > 100 M (DC 500 V) between (OFF condition) LINE (+) and LOAD (+) Error message: Compliance CE-marking Signal output F potential-free signal contact switches simultaneously with physical isolation, Dimensions (w x h x d) 12.5 x 78.5 x 60 mm (tolerances to max. DC 30 V / 2 A, min. DC 12 V / 10 mA DIN ISO 286 part 1 IT13) Operating force ON 5...8 N OFF 7...10 N Mass approx. 39 g 2 www.e-t-a.de 2044