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MY(S) 21 Hermetically Sealed Relays: MY4(Z)H Specifications Contact Ratings * With no icing or co ndensation. Characteristics Note: The above values are initial values. *1. Measurement conditions: 1 A at 5 VDC using the …

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MY(S)
Engineering Data
MY2K
Maximum Switching Capacity Endurance Curve
MY2K 100 VAC MY2K 24 VDC
Malfunctioning Shock Magnetic Interference
(External Magnetic Field)
Latching Deterioration Over
Time
DC inductive load
(L/R = 7 ms)
DC resistive load
AC resistive load
AC inductive load
(cos φ = 0.4)
10
0.1
0.5
1
5
5 10 50 100 500
Contact voltage (V)
Contact current (A)
30 VDC resistive load
110 VAC resistive load
220 VAC resistive load
10
50
100
500
012 3
Contact current (A)
Number of operations (×10
4
operations)
30 VDC inductive load
(L/R = 7 ms)
110 VAC inductive load
(cos φ = 0.4)
220 VAC
inductive load
(cos φ = 0.4)
10
1
50
100
500
0 0.5 1.5
Contact current (A)
Number of operations (×10
4
operations)
Energized
Not energized
Y
X
Z’
X’
Z
Y’
900
1000
1000
400
400
800
700
400
400
1000
350
900
1000
300
1000
Unit: m/s
2
Armature deviation
when set
N = 20
Measurement: Shock was applied 2
times each in 6 directions along 3
axes with the Relay energized and not
energized to check the shock values
that cause the Relay to malfunction.
Criteria: Non-energized: 200 m/s
2
Energized: 200 m/s
2
Reset voltage
Set voltage
Uniform magnetic field strength (0e)
(Average values)
SNSN
Percentage
change (%)
80
80
60
60
40
20
−20
−40
−60
40
8060
−80
N = 5
Measurement: The percentage of change in the operating and
release voltages in a uniform external magnetic field
were measured (worst magnetic field direction).
40
Average value
60
90
80
70
100
0 50 100
300 500 1,000 5,000 10,000
Elapsed time (h)
Latching deterioration over time (%)
N = 24
Measurement: The rate of deterioration in latching ability was
measured over time with the Relay left at a normal temperature
(20 to 30°C) after latching by applying the rated voltage.
Dimensions (Unit: mm)
28 max.
6.3
2.6
0.5
21.5 max.
0.5
36 max. 6.4
Ten, 1.2-dia. × 2.2 oval holes
Relays with Plug-in Terminals or Soldered Terminals
MY2K
Terminal Arrangement/Internal
Connections (Bottom View)
For AC
Note: R is a resistor for ampere-turn correction. This resistor is
built-in to 50-VAC and higher models.
(The coil has no polarity.)
Safety Precautions
• For applications that use a 200 VAC power supply, connect external resistors Rs and Rr to a 100 VAC Relay.
• Do not apply a voltage to the set and reset coils at the same time. If you apply the rated voltage to both coils
simultaneously, the Relay will be set.
• The minimum pulse width in the performance column is the value for the following measurement conditions: an ambient
temperature of 23° C with the rated operating voltage applied to the coil. The performance values given here may not be
satisfied due to use over time and a reduction in latching performance due to changes in the ambient temperature or in
the conditions of the application circuit.
For actual use, apply the rated operating voltage with a pulse width based on the actual load and reset the Relay at least
once per year to prevent degradation over time.
• If the Relay is used in an environment with strong magnetic fields, the surrounding magnetic field can demagnetize the
magnetic body and cause unintended operation. Therefore, do not use these Relays in environments with strong
magnetic fields.
Relay Replacement
To replace the Relay, turn OFF the power supply to the load and Relay coil sides to prevent unintended operation and possible electrical shock.
Applicable Sockets
Use only combinations of OMRON Relays and Sockets.
14
Rr
Rs
Rs: 7.3 kΩ, 3 W min.
Rr: 14.3 kΩ, 1 W min.
Reset power supply
Set power supply
13
9101112
58
14
MY(S)
21
Hermetically Sealed Relays: MY4(Z)H
Specifications
Contact Ratings
* With no icing or condensation.
Characteristics
Note: The above values are initial values.
*1. Measurement conditions: 1 A at 5 VDC using the voltage drop method
*2. Measurement conditions: With rated operating power applied, not including
contact bounce.
Ambient temperature condition: 23° C
*3. Measurement conditions: For 500 VDC applied to the same location as for
dielectric strength measurement.
*4. This value is for bifurcated contacts.
*5. Ambient temperature condition: 23° C
*6. This value was measured at a switching frequency of 120 operations per
minute.
Engineering Data
Load MY4H MY4ZH
Item
Resistive
load
Inductive load
cos
φ
= 0.4
L/R = 7 ms
Resistive
load
Inductive load
cos
φ
= 0.4
L/R = 7 ms
Rated load
3 A at 110 VAC
3 A at 24 VDC
0.8 A at 110 VAC
1.5 A at 24 VDC
3 A at 110 VAC
3 A at 24 VDC
0.8 A at 110 VAC
1.5 A at 24 VDC
Rated carry
current
3 A
Maximum contact
voltage
125 VAC
125 VDC
Maximum contact
current
3 A
Contact form 4DPDT 4DPDT (Bifurcated)
Contact materials Au plating + Ag
Ambient operating
temperature
−25 to 60° C
*
Ambient operating
humidity
5% to 85%
Contact resistance
*
1
50 m
Ω
max.
Operation time
*
2
20 ms max.
Release time
*
2
20 ms max.
Maximum
operating
frequency
Mechanical
18,000 operations/h
Rated load
1,800 operations/h
Insulation resistance
*
4
100 M
Ω
min.
Dielectric
strength
Between coil
and contacts
1,000 VAC at 50/60 Hz for 1 min.
(700 VAC between contacts of the same polarity.)
Between contacts
of different polarity
Vibration
resistance
Destruction
10 to 55 to 10 Hz, 0.5-mm single amplitude
(1.0-mm double amplitude)
Malfunction
10 to 55 to 10 Hz, 0.5-mm single amplitude
(1.0-mm double amplitude)
Shock
resistance
Destruction
1,000 m/s
2
Malfunction
200 m/s
2
Endurance
Mechanical
50,000,000 operations (5,000,000 operations
*
4
) min.
(operating frequency: 18,000 operations/h)
Electrical
*
5
100,000 operations (50,000 operations
*
4
) min. rated
load, switching frequency: 1,800 operations/h)
Failure rate P value
(reference value)
*
6
Single contacts: 100
μ
A at 1 VDC
Bifurcated contacts: 100
μ
A at 100 mVDC
Weight
Approx. 50 g
Maximum Switching Capacity Endurance Curve
MY4(Z)H MY4H
Note: The durability of bifurcated contacts is one-half that of single contacts.
DC inductive load
(L/R = 7 ms)
DC resistive load
AC resistive load
AC inductive load
(cos φ = 0.4)
0.1
0.5
1
5
5 10 50 100 500
Contact voltage (V)
Contact current (A)
110 VAC resistive load
24 VDC resistive load
10
50
100
500
012 3
Contact current (A)
24 VDC inductive load (L/R = 7 ms)
110 VAC inductive load
(cos φ = 0.4)
Number of operations (×10
4
operations)
MY(S)
22
Dimensions (Unit: mm)
Safety Precautions
Applicable Sockets
Use only combinations of OMRON Relays and Sockets.
Application Environment for Hermetically Sealed
Relays
Humid environments can cause insulation problems, which may result in short-
circuiting or unintended operation.
Solution
Do not use these Relays in any environment where the Relay will come into
contact with water vapor, condensation, or water droplets. This can reduce the
surface tension of the insulating beads and cause short-circuiting or unintended
operation due to poor insulation.
Relay Replacement
To replace the Relay, turn OFF the power supply to the load and Relay coil
sides to prevent unintended operation and possible electrical shock.
28.5 max.
2.6
Fourteen, 1.2-dia. × 3 oval holes
35 max. 6.4
22 max.
0.5
Relays with Plug-in Terminals or Soldered Terminals
MY4(Z)H
Terminal Arrangement/
Internal Connections
(Bottom View)
(The coil has no polarity.)