EMD-BL-PH-480 - Monitoring relay

Monitoring relay for monitoring the phase sequence and asymmetry of 3-phase voltages at 208 ... 480 V AC / 120 ... 277 V AC, configurable asymmetry, 1 changeover contact, with screw connection

Product Details

Safety and system availability requirements are constantly on the increase – across all industries. Processes are becoming more and more complex, not only in machine building and the chemical industry but also in building technology. The demands placed on energy technology are also constantly on the rise.
It is only by continuously monitoring key network and system parameters that error-free and therefore cost-effective operation can be achieved. Electronic monitoring relays from the EMD series are available for a wide range of monitoring tasks so that the consequences of errors can be avoided or kept within limits.
The operating states are signaled via color LEDs and any errors that occur can be sent to a controller via a floating contact or can shut down a section of the system. All device versions are equipped with response delays so that measured values outside the set monitoring range can be briefly tolerated.

Product type Phase monitoring relay
Operating mode 100% operating factor
Mechanical service life 15x 106 cycles
Insulation characteristics
Insulation Basic insulation
Insulation characteristics
Insulation Basic insulation
Overvoltage category III
Pollution degree 2

Service life electrical 1x 105 cycles
Mains type 3-phase
Rated insulation voltage 519 V (Supply circuit)
250 V (Output circuit)
Rated surge voltage 4 kV
Supply voltage ±10 % (= measuring voltage)
Supply voltage range ±10 % (= measuring voltage)
Nominal power consumption 10 VA ((1 W) at 400 V/50 Hz)
16 VA ((1.5 W) at 480 V/60 Hz)

Input name Measuring input
Measured value AC sine (48 Hz ... 63 Hz)
Nominal input voltage UN 480 V (3~ 208 ... 480 V/120 ... 277 V)
Frequency range 48 Hz ... 63 Hz
Setting range for response delay 0.1 s ... 10 s
Min setting range of the voltage threshold value 187 V AC
Max. setting range of the voltage threshold value 519 V AC
Function Phase sequence
Phase failure
Basic accuracy ≤ 5 % (of scale end value)
Setting accuracy ± 5 % (of scale end value)
Repeat accuracy ≤ 2 %
Asymmetry 5 % ... 25% / OFF
Recovery time > 500 ms

Contact type 1 floating changeover contact
Maximum switching voltage 250 V AC (in acc. with IEC 60664-1)
Interrupting rating (ohmic load) max. 1250 VA (5 A / 250 V AC)
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 0.5 mm² ... 2.5 mm²
Conductor cross section AWG 20 ... 14
Tightening torque 1 Nm ... 1 Nm

Status display Yellow LED
Operating voltage display Green LED
Error indication Red LED

Width 17.5 mm
Height 89.5 mm
Depth 65.5 mm

Housing insulation material Polyamide PA 6.6, self-extinguishing

Ambient conditions
Degree of protection Housing IP40 (Housing)
IP20 (Connection terminal blocks)
Ambient temperature (operation) -25 °C ... 55 °C
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 61000-6-3
Noise immunity EN 61000-6-2

Standards/regulations DIN EN 60947-5-1

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

Item number 2903527
Packing unit 1 pc
Minimum order quantity 1 pc
Sales Key C04
Product Key CK4211
Catalog Page Page 247 (C-5-2019)
GTIN 4046356747233
Weight per Piece (including packing) 81.3 g
Weight per Piece (excluding packing) 80 g
Customs tariff number 85364900
Country of origin AT


ECLASS-9.0 27371803
ECLASS-10.0.1 27371803
ECLASS-11.0 27371803


ETIM 8.0 EC001441


UNSPSC 21.0 39121100


Approval ID: TR_TS_D_00573_c


Approval ID: RU*C-DE.*08.B.00010

UL Listed

Approval ID: FILE E 172140

cUL Listed

Approval ID: FILE E 172140

cULus Listed

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