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SMR-8P Alarm Relay

The SMR-8P Alarm Relay is a collective alarm component for switching equipment. It is equipped with 8 independent alarm inputs,one phase-assigned switching output for indicator light, as well as one neutral changeover contact for outputting collective alarms to a control room or for an acoustic alarm. The SMR-8P Alarm Relay is equipped with a code switch that can be used to set the working mode for each individual alarm input. The SMR-8P is available in a 230V AC and a 24V DC variant. Adaptations to customer requirements are possible. Generating of new fault value as per DIN 19235.
Note: If more than 8 alarm inputs are required, this can be done using the SMRG-4 alarm relay and the SME-12 expansion modules. This option enables a maximum of 52 alarm inputs (more details at: SMRG-4 Alarm Relay).


pdf datasheet (english)

pdf description (english)

pdf datasheet (german)

pdf description (german)

Technical Data

Operating voltage
230V AC, +/- 10 % (230 V variant)
24V DC (19 ... 34 V / 24 V variant)

Power consumption
approx. 4 VA (230 V variant)
approx. 3 W (24 V variant)

230 V AC / 50Hz / 0.2 mA
5 mA (24 V variant)

Input detection
from 170 V AC (230 V variant)
from 12 V DC (24 V variant)

Time delay
approx. 2 seconds

Relay outputs
230 V AC / 50 Hz / 2 A
24 V DC / 2 A

Ambient temperature
-20 ... +55 °C

W / H / D : 55 x 75 x 110 mm
(35 mm standard rail)
with terminals: height 86 mm

Ordering information:
SMR-8P / 230 V AC: E1547
SMR-8P / 24 V DC: E1548