MY(S)
Plastic Sealed Relays: MYQ
Ratings and Specifications
Ratings
Contact Ratings
Type
Resistive load
Inductive load
(cos φ = 0.4, L/R = 7 ms)
Item
Rated load
1 A at 220 VAC, 1 A at 24 VDC
0.5 A at 220 VAC, 0.5 A at 24 VDC
Rated carry current
Maximum contact voltage
Maximum contact current
1 A
250 VAC, 125 VDC
1 A
Maximum switching capacity
(reference value)
220 VAC, 24 W
110 VAC, 12 W
Failure rate P value
(reference value)
Single contacts: 1 mA at 1 VDC, Bifurcated contacts: 100 µA at 1 VDC
Contact structure
Contact materials
Single/bifurcated
Au plating + Ag
* This value was measured at a switching frequency of 120 operations per minute.
Ambient operating temperature
Ambient operating humidity
* With no icing or condensation.
−55 to 60° C*
5% to 85%
Characteristics
Contact resistance*1
Operation time*2
Release time*2
50 mΩ max.
20 ms max.
20 ms max.
Maximum
operating
frequency
Mechanical
Rated load
18,000 operations/h
1,800 operations/h
Between coil and contacts
1,500 VAC at 50/60 Hz for 1 min.
1,500 VAC at 50/60 Hz for 1 min.
Dielectric
strength
Between contacts of different polarity
Note: The values at the left are initial
values.
*1. Measurement conditions: 1 A at 5
VDC using the voltage drop
method
Between contacts of the same polarity 1,000 VAC at 50/60 Hz for 1 min.
Insulation resistance*3
100 M
Ω min.
Destruction
10 to 55 to 10 Hz, 0.5-mm single amplitude (1.0-mm double amplitude)
Vibration
*2. Measurement conditions: With
rated operating power applied, not
including contact bounce.
Ambient temperature condition:
23° C
resistance
Malfunction
Destruction
Malfunction
10 to 55 to 10 Hz, 0.5-mm single amplitude (1.0-mm double amplitude)
1,000 m/s2
200 m/s2
Shock
resistance
*3. Measurement conditions: For 500
VDC applied to the same location
as for dielectric strength
measurement.
AC: 50,000,000 operations (5,000,000*4) min., DC: 100,000,000 operations
Mechanical
Electrical*5
(5,000,000*4) min. (switching frequency: 18,000 operations/h)
Endurance
Weight
200,000 operations min. (100,000 operations*4) (rated load, switching
frequency: 1,800 operations/h)
*4. This value is for bifurcated
contacts.
*5. Ambient temperature condition:
23° C
Approx. 35 g
Engineering Data
Engineering Data
Maximum Switching Capacity Endurance Curve
H2S Gas Data
Malfunctioning Shock
MYQ4(Z)
MYQ4
MYQ4
Y
Energized
550
10
1,000
80
N=10
7
700
Not energized
5
500
Measurements: Temperature: 40° C, Humidity: 60% to 70%,
70
60
50
40
400
Z’
700
2
H S concentration: 5 3 ppm
600
AC resistive load
X
3
300
600
The change in contact resistance was measured after
leaving the Relay in the above environment for a fixed
amount of time, then removing it to a constant-temperature
and constant-humidity environment for at least 30 minutes.
AC inductive load
(cos φ = 0.4)
220 VAC resistive load
24 VDC resistive load
300
1
0.7
0.5
100
70
50
250
0.3
30
DC resistive load
550
600
X’
220 VAC inductive load (cos φ = 0.4)
24 VDC inductive load (L/R = 7 ms)
30
20
600
DC inductive load
(L/R = 7 ms)
Z
400
600
0.1
10
7
5
max.
min.
0.07
Unit: m/s2
0.05
0.03
0.01
3
10
1
Y’
N = 20
Shock
direction
Measurement: Shock was applied
3 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.
1
0
1
3
5
10
30 50 100
300 500 1,000
Standing time (h)
1
3
5
10
30 50 100
300 500 1,000
0.2
0.4
0.6
0.8
1.0
1.2
Contact voltage (V)
Contact current (A)
Note: The durability of bifurcated
contacts is one-half that of
single contacts.
Criteria: Non-energized: 200 m/s2
Energized: 200 m/s2
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