REX12-T Datasheet, PDF (1/6 Pages) ETAL Group – Combination of supply module and electronic circuit protector

Electronic circuit protector REX12
Description
The new electronic overcurrent protection REX12 consists of the
supply module EM12-T and the single or double channel electronic
circuit protector REX12-T which allows modular side-by-side mounting.
The modules with a width of only 12.5 mm feature push-in
technology including press release buttons and allow time-saving and
maintenance-free wiring without tools. The supply module is designed
for DC 24 V and 40 A and accommodates max. 10 mm² with wire
end ferrule as a plus (+) supply. On the load output side the circuit
protector can be wired with 2.5 mm².
The new generation of electronic overcurrent protection REX12
combines flexibility with a compact design. It is exactly tailored to the
needs of machine and panel builders. And what is more: no additional
accessories are required when connecting the individual components
electrically and mechanically. This helps save time and money!
Features
Technical data (T_amb = +23 °C, U_B = DC 24 V)
l Combination of supply module and electronic circuit protector
l S ingle and double channel selective load protection by means of
electronic trip curve
l No accessories required for connecting the components
l W idth per channel only 12.5 mm (1-channel) or
6.25 mm (2-channel)
l Fixed current ratings from 1 A to 10 A
l Integral fail-safe element, adjusted to current rating
l Switching capacitive loads up to 20,000 µF
l Manual ON/OFF/reset momentary switch
l Clear status indication by means of LED and signal contact Si
l C onnection via push-in terminals including orange press release
buttons
REX12-TAx-xxx circuit protectors
REX12-TA1-107-DC24V-xA
REX12-TA2-107-DC24V-xA/xA
1-channel
2-channel
Operating voltage U_B
Closed-circuit current I₀
REX12-TA1 1-channel
REX12-TA2 2-channel
DC 24 V (18...30 V)
in ON condition typically 5 mA
in ON condition typically 8 mA
Reverse polarity
protection
yes
Power failure
buffering time
up to 10 ms
Current ratings I_N
REX12-TA1
REX12-TA2
fixed ratings:
1 A, 2 A, 3 A, 4 A, 6 A, 8 A, 10 A
2 A / 2 A, 4 A / 4 A, 6 A / 6 A
Benefits
Visual status indication green: load circuit connected
l Saves cost – no further accessories required
by LED
green/orange blinking:
load current warning limit reached 80 %
4
l S aves time through innovative and flexible mounting and
connection technology
l Saves space – with a width of only 12.5 mm for two channels
orange: overload or short circuit until
disconnection
l P rovides flexibility through ease of mounting, disassembly and
modular design
red:
- after disconnection due to
overload or short circuit

- after undervoltage release
Approvals and standards
of operating voltage in ON
condition with autoreset
OFF: Device switched off by means
Approval
authority
UL
Standard
UL 2367
Rated
voltage
DC 24 V
Current
rating range
1 A…10 A
of ON/OFF momentary switch
or no operating voltage
Load circuit
Load output power MOSFET switching output
UL
UL60947 / cULus508listed DC 24 V 1 A…10 A
(plus switching)
under preparation
Overview of ordering number codes
Supply module
circuit protectors:
1-channel
EM12-T01-001-DC24V-40A
REX12-TA1-107-DC24V-1A
REX12-TA1-107-DC24V-2A
REX12-TA1-107-DC24V-3A
REX12-TA1-107-DC24V-4A
Load current
warning limit (I_WLimit)
hysteresis
Overload current
disconnection (I_OL)
with trip times (t_OL)
Short circuit
trip time (t_SC)

typically 0.8 x I_N
typically 5 %
typically I_OL: I_N x 1.05
typically I_OL: I_N x 1.35
typically I_OL: I_N x 2.00
t_OL: 3s
t_OL: 0,5 s
t_OL: 0.1 s
typically I_OL: I_N x 2.50
t_OL: 0.012 s
typically at short circuti (I_SC) t_SC: 0,002 s¹⁾
(see time/current characteristic)
1) _{depends on the power suplly}
circuit protectors:
REX12-TA1-107-DC24V-6A
REX12-TA1-107-DC24V-8A
REX12-TA1-107-DC24V-10A
REX12-TA2-107-DC24V-2A/2A
Influence of ambient
see temperature factor table
temperature on
overload disconnection
and load current warning limit
2-channel
REX12-TA2-107-DC24V-4A/4A
REX12-TA2-107-DC24V-6A/6A
1646
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