Crouzet 84873222, 84873220, 84873221 Data Sheet
Phase control
M3US
H3US
H3USN
Part numbers
Product adaptations
Accessories
General characteristics
➜ 3-phase voltage control relay - 17.5 mm / 35 mm
■ H3US and M3US relays control, on 3-phase networks:
- overvoltage between phases,
- undervoltage between phases
■ The H3USN relay controls, on 3-phase networks:
- overvoltage between phases and neutral,
- undervoltage between phases and neutral,
- loss of neutral
■ Multi-voltage Products
■ Controls its own supply voltage
■ True RMS measurement
■ LED status indication
M3US H3US H3USN
Function Under/overvoltage
Nominal voltage (V)
Output 1 single pole changeover
Part numbers
between phases
3 x 208
➞ 3 x 480 V
relay
84873222 84873220 84873221
Under/overvoltage
between phases
a
3 x 220 ➞ 3 x 480 V
2 single changeover
relays / one per threshold
Over and undervoltage
between phases and
neutral / loss of neutral
a
3 x 120 ➞ 3 x 277 V
2 single changeover
relays / one per threshold
a
■ Customisable colours and labels
■ Single voltage in the generic range
■ Fixed or adjustable time delay
■ Adjustable fixed hysteresis
Adaptations dedicated to M3US:
■ Fixed threshold in the generic range
Adaptations dedicated to H3US:
■ Fixed threshold in the generic range
Adaptations dedicated to H3USN:
■ Fixed overvoltage threshold in the generic range
■ Fixed undervoltage threshold in the generic range
Description Code
Removable sealable cover for 17.5 mm casing 84800000
Removable sealable cover for 35 mm casing 84800001
M3US H3US H3USN
Supply
Supply voltage Un
Voltage supply tolerance -12% / +10% -12% / +10% -20% / +20%
Operating range
Power consumption at Un
Inputs and measuring cicuit
Selection of phase-phase nominal voltage Un 208-220-380-400-415-
Selection of phase-neutral voltage - - 120-127-220-230-240-260-277
Output
Electrical life (number of operations)
General characteristics
Casing 17.5 mm 35 mm 35 mm
Weight 80 g 130 g 130 g
Comments
3 x 208
➞ 3 x 480 V
183
➞ 528 V
1.8 VA in
440-480 V
1 x 10
* 3-phase mains with earth * 3-phase mains with earth * 3-phase mains with earth
a
a
5
a
a
* 3 x 220 ➞ 3 x 480 V a * 3 x120 ➞ 3 x 277 V a *
194 ➞ 528 V
2.9 VA in
220-380-400-415-440480 V
1 x 10
a
a
a
4
96 ➞ 332 V
3.9 VA in
-
1 x 10
a
a
4
26
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General characteristics
Supply
a
supply voltage frequency
Galvanic isolation of power supply/measurement No
Inputs and measuring cicuit
Frequency of measured signal 50
Max. measuring cycle time 150 ms/True RMS measurement
Voltage threshold adjustment
Fixed hysteresis 2% of Un (M3US, H3US)
Display precision ± 3% of the displayed value
Repetition accuracy with constant parameters ± 0.5%
Measuring error with voltage drift < 1% across the whole range
Measuring error with temperature drift 0.05% / °C
Timing
Delay on threshold crossing 0.3
Repetition accuracy with constant parameters ± 3%
Reset time 1500 ms
Delay on pick-up 500 ms
Alarm on delay time max. 200 ms
Output
Type of contacts No cadmium
Maximum breaking voltage
Max. breaking current
Min. breaking current
Breaking capacity (resistive)
Maximum rate 360 operations/hour at full load
Operating categories acc. to IEC 60947-5-1 AC 12, AC 13, AC 14, AC 15, DC 12, DC 13, DC 14
Mechanical life (operations)
Insulation
Nominal insulation voltage IEC 60664-1 400 V
Insulation coordination (IEC 60664-1 / 60255-5) Overvoltage category III: degree of pollution 3
Rated impulse withstand voltage IEC 60664-1/60255-5 4 KV (1.2 / 50 µs)
Dielectric strength IEC 60664-1/60255-5 2 kV AC 50 Hz 1 min
Insulation resistance IEC 60664-1 / 60255-5
General characteristics
Display power supply Green LED
Display relay Yellow LED (1 for M3US, 2 for H3US and H3USN)
Mounting On 35 mm symmetrical DIN rail, IEC/EN 60715
Mounting position All positions
Material: enclosure plastic type VO to UL94 standard Incandescent wire test according to IEC 60695-2-11 & NF EN 60695-2-11
Protection (IEC 60529) Terminal block: IP 20
Connecting capacity IEC 60947-1
Max. tightening torques IEC 60947-1 0.6
Operating temperature IEC 60068-2 -20
Storage temperature IEC 60068-2 -40
Humidity IEC 60068-2-30 2 x 24 hr cycle 95% RH max. without condensation 55°C
Vibrations according to IEC/EN60068-2-6 10
Shocks IEC 60068-2-6 5 g
Standards
Marking CE (LVD) 73/23/EEC - EMC 89/336/EEC
Product standard NF EN 60255-6 / CEI 60255-6 / UL 508 / CSA C22.2 N°14
Electromagnetic compatibility Immunity EN 61000-6-2/IEC 61000-6-2
Certifications UL, CSA, GL
Conformity with environmental directives RoHS, WEEE
50 / 60 Hz ±10%
➞ 60 Hz ± 10%
b
Undervoltage -2 to -20% of selected Un
for M3US:
(-2 to -12% across the 3 x 208 V range)
(-2 to -17% across the 3 x 220 V range)
for H3US:
(-2 to -12% across the 3 x 220 V range)
b
Overvoltage 2➞ 20% of selected Un
For M3US and H3US:
(+2
➞ +10% across the 3 x 480 V
➞ 30 s (0, +10%)
z
250 V
z
5 A
10 mA / 5 V
1250 VA
30 x 10
> 500 MΩ / 500 V
Casing: IP30
Rigid: 1 x 4
1 x 11 AWG - 2 x 14 AWG
Flexible with ferrules: 1 x 2.5
1 x 14 AWG - 2 x 16 AWG
➞ 150 Hz, A = 0.035 mm
Emission EN 61000-6-4/EN 61000-6-3
IEC 61000-6-4/IEC 61000-6-3
Emission EN 55022 class B
c
a
6
c
2
- 2 x 2.52 mm2
➞ 1 Nm / 5.3 ➞ 8.8 Lbf.Ft
➞ +50°C
➞ +70°C
a
range)
2
- 2 x 1.52 mm
pending
2
27
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