Monitoring relay - EMD-FL-V-300

Monitoring relay for monitoring 1-phase voltages of 0…300 V AC/DC, overvoltage/undervoltage or window, error memory, wide range power supply unit, 2 changeover contacts


Increasingly higher demands are being placed on safety and system availability - across all sectors. Processes are becoming more and more complex, not only in mechanical engineering and the chemical industry, but also in plant and automation technology. Demands on power engineering are also increasing constantly.
Error-free and therefore cost-effective operation can only be achieved through continuous monitoring of important network and system parameters. Electronic monitoring relays in the EMD series are available for a wide range of monitoring tasks to avoid the consequences of errors or to keep them within limits.
The operating states are indicated using colored LEDs, errors that may occur can be sent to a control system via a floating contact or can shut down a part of the system. Some device versions are equipped with startup and response delays in order to briefly tolerate measured values outside the set monitoring range.

Utilization restriction
EMC note EMC: class A product, see manufacturer's declaration in the download area

Product type Voltage monitoring relay
Operating mode 100% operating factor
Mechanical service life approx. 2x 107 cycles
Insulation characteristics
Overvoltage category III
Pollution degree 2
Insulation Basic insulation

Service life electrical 2x 105 cycles at ohmic load, 1000 VA
Maximum power dissipation for nominal condition 1 W
Mains type 1-phase
Rated insulation voltage 300 V
Rated surge voltage 4 kV
Supply voltage range 24 V AC ... 240 V AC -15 % ... +10 %
24 V DC ... 240 V DC -20 % ... +25 %
Type of supply voltage AC/DC
Nominal power consumption 4.5 VA (1.5 W)

Input name Measuring input
Measured value DC, AC sine
Protection ≤ 20 A
Input voltage range 0 V ... 30 V AC/DC (connection terminal blocks: U1 and GND)
0 V ... 60 V AC/DC (connection terminal blocks: U2 and GND)
0 V ... 300 V AC/DC (connection terminal blocks: U3 and GND)
Maximum input voltage 100 Vrms (connection terminal blocks: U1 and GND)
150 Vrms (connection terminal blocks: U2 and GND)
440 Vrms (connection terminal blocks: U3 and GND)
Input resistance of voltage input 47 kΩ (connection terminal blocks: U1 and GND)
100 kΩ (connection terminal blocks: U2 and GND)
470 kΩ (connection terminal blocks: U3 and GND)
Frequency range 48 Hz ... 400 Hz
Maximum temperature coefficient < 0.1 %/K
Setting range for response delay 0.1 s ... 10 s
Setting range for starting delay 0 s ... 10 s
Min. setting range 5 % ... 95 % (From UN)
Max. setting range 10 % ... 100 % (From UN)
Function Undervoltage
Error memory
Basic accuracy ± 5 % (of scale end value)
Setting accuracy ≤ 5 % (of scale end value)
Repeat accuracy ≤ 2 %
Recovery time 500 ms

Contact type 2 floating changeover contacts
Maximum switching voltage 250 V AC (in acc. with IEC 60664-1)
Interrupting rating (ohmic load) max. 750 VA (3 A/250 V AC, module aligned, ≤ 5 mm spacing)
1250 VA (5 A/250 V AC, module not aligned, ≥ 5 mm spacing)
Output fuse 5 A (fast-blow)

Connection method Screw connection
Stripping length 8 mm
Conductor cross section solid 0.5 mm² ... 2.5 mm²
Conductor cross section flexible 0.25 mm² ... 2.5 mm²
Conductor cross section AWG 20 ... 14

Width 22.5 mm
Height 90 mm
Depth 113 mm

Housing insulation material Polyamide PA, self-extinguishing

Ambient conditions
Degree of protection Housing IP40 (Housing)
Degree of protection Connection terminal blocks IP20 (Connection terminal blocks)
Ambient temperature (operation) -25 °C ... 55 °C
-25 °C ... 40 °C (corresponds to UL 508)
Ambient temperature (storage/transport) -25 °C ... 70 °C
Climatic class 3K3 (in acc. with EN 60721)
Permissible humidity (operation) 15 % ... 85 %

Certificate CE-compliant
UL, USA / Canada
Identification UL/C-UL Listed UL 508

Low Voltage Directive Conformance with Low Voltage Directive
Electromagnetic compatibility Conformance with EMC directive
Noise emission EN 61000-6-4
Noise immunity EN 61000-6-2

Standards/regulations EN 50178

Mounting type DIN rail mounting
Assembly instructions on standard DIN rail NS 35 in accordance with EN 60715
Mounting position any

Tuotenumero 2866048
Pakkausyksikkö 1 Kappaletta
Vähimmäistilausmäärä 1 Kappaletta
Tuoteavain CK4111
Tuotekoodi CK4111
Luettelosivu Sivu 251 (C-5-2019)
GTIN 4017918975012
Paino kappaletta kohti (sis. pakkauksen) 164,8 g
Paino kappaletta kohti (ilman pakkausta) 164 g
Tullitariffinumero 85364900
Alkuperämaa AT


ECLASS-9.0 27371801
ECLASS-10.0.1 27371801
ECLASS-11.0 27371801


ETIM 8.0 EC001438


UNSPSC 21.0 41113600


Hyväksyntätunnus: TR_TS_D_00573_c


Hyväksyntätunnus: RU*C-DE.*08.B.00010

UL Listed

Hyväksyntätunnus: FILE E 172140

cUL Listed

Hyväksyntätunnus: FILE E 172140

cULus Listed

China RoHS Environmentally friendly use period: unlimited = EFUP-e
No hazardous substances above threshold values


Adjustable via potentiometer on the front
Variable supply voltage range
Separately adjustable startup and response delays