Electronic circuit breaker ESS31-T...-DC 24 V Description E-T-As ESS31-T electronic circuit breaker is only 12.5mm wide and selectively protects all DC 24 V load circuits, thereby increasing the uptime of machines and systems. 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. The ESX10-T responds faster than frequently used DC 24 V switch mode power supplies without tripping fast and thus prevents disastrous voltage dips of the supply. The ESS31-T is track-mountable and provides ease of installation for groups of devices with several circuits. It works with a single trip curve for all loads. Even capacitive loads up to 40,000 F can be handled very easily. Fixed current ratings from 0.5 A to 12 A are available. The integral fail-safe element (fuse) is adjusted to the circuit breakers rated current and can thus very ESS31-T easily be synchronised with the wired cable cross section. This makes planning much easier. Due to the approval to UL1077 Supplementary Protector and the UL Listed approval to UL60947/UL508, these circuit breakers can also be used in applications to UL 508A Industrial Control Panels without any problems and are also suitable for field wiring. In addition, the integral physical isolation offers even more safety, because a circuit breaker in the OFF condition is really switched OFF. Features Your benefits l l Track-mountable Fit for global use: approved to EN/IEC60934 (VDE) and UL1077 l Wiring via supply busbars LINE+ and 0 V (Supplementary Protector), UL 1310 (NEC Class 2) l l Physical isolation in the event of a failure Provides ease of maintenance and trouble-shooting, because l Active linear current limitation physical isolation of contacts ensures genuine disconnection of l Capacitive loads up to 40,000 F load circuits l l Fixed current ratings 0.5 A12 A Simplifies planning due to active current limitation as a clear l Approvals: UL, NEC Class 2, VDE planning factor l Saves costs and time through fast and flexible mounting including integral power distribution solution 4 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) ESS31-TC 0.5 1 2 3.6 3 4 6 8 10 12 2 3 3,6 (CL2) (CL2) (CL2) ESS31-TC-001-DC24V x 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/d354 NEC Class2 Compliances 2044 www.e-t-a.de 1Electronic circuit breaker ESS31-T...-DC 24 V Electronic circuit breaker ESS31-T...-DC 24 V Technical data (T = 25 C, U = DC 24 V) Technical data (T = 25 C, U = DC 24 V) amb B amb B Parallel connection of not allowed Operating data several load outputs Operating voltage U DC 24 V (18...30 V) B Current ratings I fixed rating: Signal output ESS31-TC-001/-002 N Types ESS31-TC-: Electrical data potential-fr ee auxiliary contact 0.5 A, 1 A, 2 A, 3 A, 3.6 A, 4 A, max. DC 30 V / 2 A min. DC 12 V / 10 mA 6 A, 8 A, 10 A, 12 A Standard condition U is applied and switch S1 is ON and B Standby current I in ON condition: typically 8 mA 0 LED green overload, no short circuit depending on the OFF condition LED off device switched off (switch S1 is OFF) signal output load circuit physically isolated Trip current (bimetal) typically 0.4 A no operating voltage U B (only in the event of a failure, until physical Fault condition LED orange overload conditoins > 1.2 times rated disconnection) current until electronic disconnection l Visual status multicoloured LED: Fault condition LED red electr onic disconnection upon overload, indication Green: short circuit or undervoltage - device is ON (S1 = ON) ESS31-TC-001 single signal, make contact load circuit connected contact open, terminal 13-14 Orange: ESS31-TC-002 single signal, break contact - overload or short circuit until contact closed, terminal 11-12 electronic disconnection General data Red: Fail-safe element back-up fuse for ESS31-T .. not required - device switched OFF electr onically due to integral redundant fail-safe ele- load circuit OFF ment (protective element) - undervoltage (U < 8 V) B Terminals LINE+ / LOAD+ / 0V OFF: - manually OFF (S1 = OFF) - Screw terminals max. cable cross section M4 2 load circuit physically isolated - flexible with wire end ferrule w/wo plastic sleeve 0.5 10 mm or device is dead-voltage - multi-lead connection (2 identical cables) 2 rigid / flexible 0.5 4 mm l 2 Potential-free signal contact - flexible with wire end ferrule without plastic sleeve 0.5 2.5 mm l On/off position of the switch S1 - flexible with TWIN wire end ferrule 2 with plastic sleeve 0.5 6 mm Load circuit - wire stripping length 10 mm Load output power MOSFET switching output - tightening torque (EN 60934) 1.5 1.8 Nm (plus switching) Terminals aux. contacts Overload and short typically 1.2 x I N 4 - Screw terminals M3 circuit disconnection with active current limitation - max. cable cross section Trip times for see time/current characteristic 2 - flexible with wire end ferrule w/wo plastic sleeve 0.25 2.5 mm electronic disconnection overload trip time typically 500 ms - wire stripping length 8 mm short cir cuit trip time depending on - tightening torque (EN 60934) 0.5 0.6 Nm current rating (see table 1) Housing material moulded for physical isolation typically 5 s Mounting Tragschiene nach EN 60715-35x7.5 Temperature disconnection inter nal temperature monitoring with physical isolation Ambient temperature 0...+50 C (without condensation, cf. EN 60204-1) Undervoltage with hysteresis, no reset required: monitoring OFF at U < 14 V Storage temperature -20...+70 C B of load output ON at U > 17 V B Humidity 96 hrs / 95% RH 40 C to IEC 60068-2-78-Cab Switch-on delay t typically 2 ms after each ON operation, Start climate class 3K3 to EN 60721 reset and after applying of U B Vibration 3 g test to IEC 60068-2-6, test Fc , Capacitive loads up to 40,000 F Protection class housing IP20 EN 60529 Free-wheeling diode exter nal free-wheeling diode terminals IP20 EN 60529 recommended for inductive load EMC requirements emission: EN 61000-6-3 (EMC directive, CE logo) susceptibility: EN 61000-6-2 Insulation co-ordination 0.5 kV / pollution degree 2 (IEC 60934) reinforced insulation in operating area Dielectric strength max. DC 30 V (load circuit) Insulation resistance > 100 M (DC 500 V) between (OFF condition) LINE (+) and LOAD (+) Conformity CE marking Dimensions (w x h x d) 12.5 x 80 x 83 mm (tolerances to DIN ISO 286 part 1 IT13) Mass approx. 70 g 2 www.e-t-a.de 2044