REX12 Electronic Circuit Protector Description The compact and flexible all-in-one solution REX consists of several perfectly matched components. It comprises the EM12-T supply module for the plus and minus potential via a single or double channel REX12-T electronic circuit protector which can be mounted side by side in any number and the PM12-T potential extension module for plus and minus multiplication. Connection of the only 12.5 mm wide modules is exclusively with push-in terminals which allow no-tool time-saving wiring. The circuit protectors are placed on the symmetrical rail one after another in combination with EM12-T and PM12-T and are electrically connected by means of built-in connector arm - no further accessories are required. The circuit protector REX12-T offers selective overcurrent protection by responding to short circuit or overload faster than the switch mode power supply. Capacitive loads of up to 20,000F can be switched on without problems. The circuit protector is available in all standard fixed and adjustable current ratings from 1 A to 10 A. Besides the UL508listed approval and NEC Class2, the REX12-T also meets the requirements of cable protection to EN60204-1. US patent number: US 9,899,807 B2 Features Benefits l l Combination of supply modules, overcurrent protection and Saves cost no further accessories required l power distribution Saves 50 % time through innovative and flexible mounting and l Selective load protection by means of electronic trip curve connection technology l l No accessories required for connecting the components Saves space with a width of only 12.5 mm per channel l l Width per channel only 12.5 mm (1-channel) or 6.25 mm Provides flexibility through ease of mounting, disassembly and (2-channel) modular design l Fixed and adjustable current ratings 1 A - 10 A l Reduces storage costs because only one product is required l Integral fail-safe element, adjusted to max. current rating for all current ratings l Switching capacitive loads up to 20,000 F l Manual ON/OFF/reset momentary switch l Clear status indication by means of LED and signal contact Si l Connection via push-in terminals including orange press 4 release buttons Preferred types for more details on all configurations please see page 4 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 types Short description Preferred ratings (A) REX12-TA1 1-channel 2 4 6 10 2/2 4/4 6/6 x x x x REX12-TA1-107-DC24V- REX12-TA2 2-channel 2 4 6 10 2/2 4/4 6/6 x x x REX12-TA2-107-DC24V- 2-channel, REX12D-TE2 1 A10 A adjustable x REX12D-TE2-100-DC24V- Approvals Data sheet The current data sheet is available on our website: www.e-t-a.de/d359 NEC Class2 Compliances 2010 www.e-t-a.de 1REX12 Electronic Circuit Protector REX12 Electronic Circuit Protector Technical data (T = +23 C, U = DC 24 V) Technical data (T = +23 C, U = DC 24 V) amb B amb B REX12D-TE2-100-DC24V-1A-4A-CL2 REX12-Txx-xxx circuit protectors I 1 A-CL2 typically 50 mV I : 70 % typically 42 mV REX12-TA1-107-DC24V-xA 1-channel N: N REX12-TB1-107-DC24V-xA 1-channel I 2 A-CL2 typically 90 mV I : 70 % typically 70 mV N: N REX12-TA2-107-DC24V-xA/xA 2-channel I 3 A-CL2 typically 135 mV I : 70 % typically 95 mV N: N REX12D-TE2-100-DC24V-xA-xA 2-channel I 4 A-CL2 typically 180 mV I : 70 % typically 120 mV N: N The REX12-TAx is operated in the standard mode with EM12-T. The REX12D-TE2-100-DC24V-1A-10A REX12D-TE2 can be operated both with EM12D-T or EM12-T. The I : 1 A typically 30 mV I : 70 % typically 28 mV operating mode EM12D-T (COM mode) or EM12-T (standard) is N N I : 2 A typically 39 mV I : 70 % typically 34 mV recognised automatically. The following data exclusively refer to the N N I : 3 A typically 48 mV I : 70 % typically 40 mV standard mode: N N I : 4 A typically 57 mV I : 70 % typically 46 mV N N Operating voltage U DC 24 V (18...30 V) B I : 5 A typically 66 mV I : 70 % typically 52 mV N N Closed-circuit current I 0 I : 6 A typically 74 mV I : 70 % typically 59 mV N N REX12-Tx1 1-channel in ON condition: Typically 5 mA I : 7 A typically 83 mV I : 70 % typically 65 mV N N REX12-TA2 2-channel in ON condition: Typically 8 mA I : 8 A typically 92 mV I : 70 % typically 71 mV N N REX12D-TE2 1 A-4 A 2-channel in ON condition:Typically 9 mA I : 9 A typically 101 mV I : 70 % typically 77 mV N N REX12D-TE2 1 A-10 A 2-channel in ON condition: Typically 12 mA I : 10 A typically 110 mV I : 70 % typically 83 mV N N Reverse polarity 2) depending on power source protection Yes Fail-safe element I : 1 A (CL2) fail-safe I : 1 A N N Power failure integral I : 2 A (CL2) fail-safe I : 2 A N N buffering time up to 10 ms blade fuse I : 3 A fail-safe I : 3.15 A N N Rated current I ratings: adjusted to I : 3A-CL2 fail-safe I : 4 A N N N REX12-Tx1 1 A, 2 A, 3 A, 4 A, 6 A, 8 A, 10 A related current rating I I : 4 A fail-safe I : 4 A N N N REX12-TA2 1 A/1 A, 2 A/2 A, 3 A/3 A, 4 A/4 A, 6 A/6 A I : 4 A-CL2 fail-safe I : 4 A N N REX12D-TE2 1 A-4 A, 1 A 10 A condition upon delivery I : 6 A fail-safe I : 6.3 A N N max. current rating I : 8 A fail-safe I : 8 A N N I : 10 A fail-safe I : 10 A Visual status indication green: Load circuit connected N N I : 1 A/1 A (CL2) fail-safe I : 1 A/1 A by means of LED green/orange N N I : 2 A/2 A (CL2) fail-safe I : 2 A/2 A blinking: load current warning limit N N I : 3 A/3 A fail-safe I : 3.15A/3.15A reached 90 % N N orange: overload or short circuit until I : 3 A/3 A-CL2 fail-safe I : 4 A/4 A N N disconnection I : 4 A/4 A fail-safe I : 4 A/4 A N N I : 4 A/4 A-CL2 fail-safe I : 4 A/4 A N N red: - after disconnection due to I : 6 A/6 A fail-safe I : 6.3 A/6.3 A N N overload or short circuit I : 1 A-4 A-CL2 fail-safe I : 4 A N N I : 1 A-10 A failsafe I : 16 A - after undervoltage r elease of N N operating voltage in ON operating voltage OFF at typically U < 16.0 V B condition with autoreset monitoring re. ON at typically U > 19.0 V B OFF: Device switched off by means of undervoltage hysteresis typically 2 V 4 ON/OFF momentary switch or with automatic OFF and ON switching no operating voltage ON delay Load circuit - with power ON channel 1: typically 100 ms (REX12-TAx) channel 2: typically 200 ms (REX12-TAx) Load output power MOSFET switching output channel 1: typically 1,500 ms (REX12D-TE2) (plus switching) channel 2: typically 1,600 ms (REX12D-TE2) Load current warning limit (I ) typically 0.9 x I WLimit N - when switching on with channel 1: typically 5 ms hysteresis typically 5 % ON /OFF switch or channel 2: typically 100 ms Overload current - after undervoltage channel 1: typically 5 ms disconnection (I ) typically I : I x 1.05 t : 3s L OL N OL channel 2: typically 5 ms typically I : I x 1.35 t : 0,5s OL N OL disconnection of - manually on the device with the with trip times (t ) typically I : I x 2.00 t : 0.1s L OL N OL ON/OFF momentary switch typically I : I x 2.50 t : 0.012 s OL N OL 2) short circuit typically at short circuit (I ) t : 0.002 s - after an overload / short circuit SC SC trip time (t ) see time/current characteristic SC disconnection with storage (no automatic reset) Influence of ambient see temperature factor table temperature on - temporarily at undervoltage overload disconnection - at no operating voltage and load current warning limit Switch-on of load circuit Voltage drop in load circuit at I and at I 70 % for REX12-Txx N N - momentary switch ON/OFF between LINE+ and LOAD+ I : 1 A (CL2) typically 180 mV I : 70 % typically 125 mV device can only be switched on when N N I : 2 A (CL2) typically 110 mV I : 70 % typically 80 mV operating voltage is applied N N I : 3 A typically 120 mV I : 70 % typically 85 mV N N - applying The device starts up with the condition I : 3 A-CL2 typically 130 mV I : 70 % typically 90 mV N N operating voltage last stored. I : 4 A typically 115 mV I : 70 % typically 80 mV N N I : 4 A-CL2 typically 180 mV I : 70 % typically 120 mV N N I : 6 A typically 170 mV I : 70 % typically 110 mV N N I : 8 A typically 160 mV I : 70 % typically 105 mV N N I : 10 A typically 180 mV I : 70 % typically 120 mV N N 2 www.e-t-a.de 2010