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Coil Ratings

Set Coil

Rated
voltage (V)
Rated current (mA)Coil resistance
(Ω)
Set
volt.
Max
volt.
Power consumption
(VA or W)
DP3P, 4P
Open RelaysCasedOpen RelaysCased
50 Hz60 Hz50 Hz60 Hz50 Hz60 Hz50 Hz60 HzDP3P, 4P% of rated
voltage
AC679065569059012851100116510001.10.4680% max.110%Initial:
DP: Approx. 6.2
3P, 4P: Approx. 12
Rated:
DP: Approx. 3.5 (3.9)
3P, 4P: Approx. 6 (6.6)*
123953253452956405505805004.71.9
24195160170145320275290250198.2
50947882701541321401208234
100/
(110)
4739/
45
4135/
40
7766/
76
7060/
68
340141
200/
(220)
23.519.5/
22.5
20.517.5/
20
38.533/
38
3530/
34
1540563
DC634045017.513.4DP: Approx. 2.1
3P, 4P: Approx. 2.7
121762206854
248794275255
4841521180930
100/
110
17/1922/24.557504500
200/
220
8.6/9.511/122320018000

Note:

1. The rated current and coil resistance are measured at a coil temperature of 23°C with tolerances of +15% ⁄ -20% for AC rated current and ±15% for DC coil resistance.

2. Performance characteristic data are measured at a coil temperature of 23°C.

3. The AC coil resistance values are reference values.

4. The maximum voltage is one that is applicable instantaneously to the Relay coil at an ambient temperature of 23°C and not continuously.

*Values in parentheses are for open relays.

Reset Coil

Rated voltage (V)Rated current (mA)Coil resistance
(Ω)
Reset voltageMaximum voltagePower consumption
(VA or W)
50 Hz60 Hz% of rated voltage
AC67706902.380% max.110%Initial: Approx. 6.5
Rated:Approx. 4.1
123853459.2
2419117035
509282175
100/(110)4641/46739
200/(220)2320/233030
DC642214.2Approx. 2.8
1221556
24109220
4858832
100/11025/274040
200/22012.2/13.516330

Note:

1. The rated current and coil resistance are measured at a coil temperature of 23°C with tolerances of +15% ⁄ -20% for AC rated current and ±15% for DC coil resistance.

2. Performance characteristic data are measured at a coil temperature of 23°C.

3. The AC coil resistance values are reference values.

4. The maximum voltage is one that is applicable instantaneously to the Relay coil at an ambient temperature of 23°C and not continuously.

Coils (Conforming to Auxiliary Power Relay Specifications)

Rated
voltage (V)
Rated current (mA)Coil resistance
(Ω)
Set
voltage
Reset
voltage
Max.
voltage
Operation level (JEC-174D)Power consumption (VA or W)
Set coilReset coilSet
coil
Reset
coil
Set coilReset coil
50 Hz60 Hz50 Hz60 Hz% of rated voltageInitialRatedInitialRated
AC242452101911708.53580% max.80% max.110%AApprox. 6.3Approx. 5.1Approx. 6.5Approx. 4.1
50117102928236175
100/
(110)
58.551/584641/46150739
11053464237.3182835
11551444035.7210885
200/
(220)
2925.5/292320.5/236203030
22026.5232118.67803420
DC2494109255220Approx. 2.7Approx. 2.8
485258930832
100/
110
22/24.525/2745004040
1252223.558005330
200/
220
11/1212.2/13.51800016330

Note:

1. The rated current and coil resistance are measured at a coil temperature of 23°C with tolerances of +15% ⁄ -20% for AC rated current and ±15% for DC coil resistance.

2. The AC coil resistance and coil inductance values are for reference only.

3. Performance characteristic data are measured at a coil temperature of 23°C.

4. The maximum voltage is one that is applicable instantaneously to the Relay coil at an ambient temperature of 23°C and not continuously.

Contact Ratings

Standard Relays

ItemOpen Relays: MM2K(B), MM3K(B), MM4K(B)Cased Relays: MM2KP, MM3KP, MM4KP
Resistive load
(cosΦ = 1)
Inductive load
(cosΦ =0.4, L/R=7 ms)
Resistive load
(cosΦ = 1)
Inductive load
(cosΦ =0.4, L/R=7 ms)
Contact mechanismSingle
Contact materialAg
Rated load10 A at 220 VAC
7 A at 24 VDC
5 A at 220 VAC
4 A at 24 VDC
Rated carry current10 A5 A
Max. switching voltage250 VAC, 250 VDC250 VAC, 250 VDC
Max. switching current10 A5 A
Max. switching power
(reference value)
2,200 VA, 168 W1,100 VA, 96W

DC-switching Relays

ItemOpen Relays: MM2XK(B), MM3XK(B), MM4XK(B)Cased Relays: MM2XKP, MM3XKP, MM4XKP
Resistive load
(cosΦ = 1)
Inductive load
(cosΦ =0.4, L/R=7 ms)
Resistive load
(cosΦ = 1)
Inductive load
(cosΦ =0.4, L/R=7 ms)
Contact mechanismSingle
Contact materialAg
Rated load7 A at 110 VDC6 A at 110 VDC5 A at 110 VDC
Rated current flow10 A5 A
Max. switching voltage250 VAC, 250 VDC250 VAC, 250 VDC
Max. switching current10 A5 A
Max. switching power
(reference value)
800 W, 20 VA660 W, 20 VA700 W, 20 VA600 W, 20 VA

Note:

1. When switching DC inductive loads at 125 V or more, an unstable region exists for a switching current of between 0.5 and 2.5 A. The Relay will not turn OFF in this region. Use a switching current of 0.5 A or less when switching 125 VDC or more.

2. If L ⁄ R exceeds 7 ms when switching DC inductive loads, an arc-breaking time of up to 50 ms must be considered in application and the circuit must be designed to ensure that an arc-breaking time of 50 ms is not exceeded.

Contacts (Conforming to Auxiliary Power Relay Specifications)

ItemMM4KP-JDMM4XKP-JD
Resistive load
(cosΦ = 1)
Inductive load
(cosΦ = 0.4, L/R= 7 ms)
Resistive load
(cosΦ = 1)
Inductive load
(cosΦ = 0.4, L/R= 7 ms)
Contact mechanismSingle
Contact materialAg
Rated load5 A at 220 VAC, 4 A at 24 VDC5 A at 110 VDC
Rated carry current5 A
Max. switching voltage250 VAC, 250 VDC
Max. switching current5 A

Note:

1. When switching DC inductive loads at 125 V or more, an unstable region exists for a switching current of between 0.5 and 2.5 A. The Relay will not turn OFF in this region. Use a switching current of 0.5 A or less when switching 125 VDC or more.

2. If L ⁄ R exceeds 7 ms when switching DC inductive loads, an arc-breaking time of up to 50 ms must be considered in application and the circuit must be designed to ensure that an arc-breaking time of 50 ms is not exceeded.

Characteristics

ItemOpen or bifurcated-contact Relays
Contact resistance
(see note 2)
50 mΩ max.
Set time
(see note 3)
AC: 30 ms max.; DC: 60 ms max. (minimum pulse width for AC and DC: 100 ms)
Reset time
(see note 3)
30 ms max. (minimum pulse width for AC and DC: 100 ms)
Max. operating frequencyMechanical: 1,800 operations/hr
Electrical: 1,800 operations/hr (under rated load)
Insulation resistance
(see note 4)
100 MΩ min. (at 500 VDC)
Dielectric strength1,500 VAC, 50/60 Hz for 1 min between contacts of same polarity
2,000 VAC, 50/60 Hz for 1 min between contacts of different polarity, between contacts and coil, and
between set and reset coils
Vibration resistanceDestruction: 10 to 55 to 10 Hz, 0.375 mm single amplitude (0.75 mm double amplitude)
Malfunction: 10 to 35 to 10 Hz, 0.5 mm single amplitude (1.0 mm double amplitude)
Shock resistanceDestruction: 500 m/s2
Malfunction: 50 m/s2
EnduranceMechanical: 2,500,000 operations min. (at 1,800 operations/hr)
Electrical: 500,000 operations min. (at 1,800 operations/hr under rated load) (see note 5)
Error rate (level P)
(Reference value)
(see note 6)
10 mA at 5 VDC
Ambient temperatureOperating: -10°C to 55°C (with no icing or condensation)
Ambient humidityOperating: 5% to 85%
WeightStandard Relays DC-switching Relays
MM2K: Approx. 255 g MM2XK: Approx. 260 g
MM3K: Approx. 390 g MM2XK: Approx. 395 g
MM4K: Approx. 420 g MM4XK: Approx. 430 g
MM2KP: Approx. 375 g MM2XKP: Approx. 380 g
MM3KP: Approx. 550 g MM3XKP: Approx. 555 g
MM4KP: Approx. 570 g MM4XKP: Approx. 580 g

Note:

1. The data shown above are initial values.

2. The contact resistance was measured with 1 A at 5 VDC using the voltage drop method.

3. The set or reset time was measured with the rated voltage imposed with any contact bounce ignored at an ambient temperature of 23°C.

4. The insulation resistance was measured with a 500-VDC megger applied to the same places as those used for checking the dielectric strength.

5. The electrical endurance was measured at an ambient temperature of 23°C.

6. This value was measured at a switching frequency of 60 operations per minute.

Characteristics (Conforming to Auxiliary Power Relay Specifications)

Vibration resistanceDestruction: 10 to 55 to 10 Hz, 0.375 mm single amplitude (0.75 mm double amplitude)
Malfunction: 10 to 22 to 10 Hz, 0.5 mm single amplitude (1.0 mm double amplitude)
Shock resistanceDestruction: 300 m/s2
Malfunction: 30 m/s2
EnduranceMechanical: 2,500,000 operations min. (at 1,800 operations/hr)
Electrical: 500,000 operations min. (at 1,800 operations/hr under rated load) (see note 2)
Error rate (level P)
(Reference value)
(see note 3)
10 mA at 5 VDC
Ambient temperatureOperating: -10°C to 40°C (with no icing or condensation)
Ambient humidityOperating: 5% to 85%
WeightMM4KP-JD: Approx. 570 g
MM4XKP-JD: Approx. 580 g

Note:

1. The data shown above are initial values.

2. The electrical endurance was measured at an ambient temperature of 23°C.

3. This value was measured at a switching frequency of 60 operations per minute.

Caution: In the interenst of product improvement, specifications are subject to change without notice.