• Low power consumption due to mechanical latch for economic operation.
• Relays with mixed coil specifications can be produced (e.g., AC set coil and DC reset coil).
• Operational response fast enough to enable pulse signal power applications.
• Ambient operating temperature: –10°C to 55°C.
Rated voltage (V) 
Rated current (mA)  Coil resistance (Ω) 
Set volt. 
Max volt. 
Power con sump tion (VA or W) 


DP  3P, 4P  DP  3P, 4P 

Open Relays 
Cased  Open Relays 
Cased  Open Relays 
Cased  Open Relays 
Cased  
50 Hz  60 Hz  50 Hz  60 Hz  50 Hz  60 Hz  50 Hz  60 Hz  % of rated voltage 

AC  6  790  655  690  590  1,285  1,100  1,165  1,000  1.1  0.46  80% max. 
110 % 
Initial: DP: Approx. 6.2 3P, 4P: Approx. 12 Rated: DP: Approx. 3.5 (3.9) 3P, 4P: Approx. 6 (6.6) * 
12  395  325  345  295  640  550  580  500  4.7  1.9  
24  195  160  170  145  320  275  290  250  19  8.2  
100/ (110) 
47  39/45  41  35/40  77  66/76  70  60/68  340  141  
200/ (220) 
23.5  19.5/ 22.5 
20.5  17.5/ 20 
38.5  33/38  35  30/34  1,540  563  
DC  6  340  450  17.5  13.4  DP: Approx. 2.1 3P, 4P: Approx. 2.7 

12  176  220  68  54  
24  87  94  275  255  
48  41  52  1,180  930  
100/ 110 
17/19  22/24.5  5,750  4,500  
200/ 220 
8.6/9.5  11/12  23,200  18,000 
Rated voltage (V) 
Rated current (mA)  Coil resistance (Ω) 
Reset voltage  Maximum voltage  Power consumption (VA or W) 


50 Hz  60 Hz  % of rated voltage  
AC  6  770  690  2.3  80% max.  110%  Initial: Approx. 6.5 Rated: Approx. 4.1 
12  385  345  9.2  
24  191  170  35  
100/(110)  46  41/46  739  
200/(220)  23  20/23  3,030  
DC  6  422  14.2  Approx. 2.8  
12  215  56  
24  109  220  
48  58  832  
100/110  25/27  4,040  
200/220  12.2/13.5  16,330 
Rated voltage (V) 
Rated current (mA) 
Coil resistance (Ω) 
Set volt age 
Reset volt age 
Max. volt age 
Op era tion level (JEC 174D) 
Power consumption (VA or W) 


Set coil 
Reset coil 
Set coil 
Reset coil 
Set coil  Reset coil  
50 Hz 
60 Hz 
50 Hz 
60 Hz 
% of rated voltage  Initial  Rated  Initial  Rated  
AC  24  245  210  191  170  8.5  35  80% max. 
80% max. 
110%  A  Approx. 6.3 
Approx. 5.1 
Approx. 6.5 
Approx. 4.1 
100/ (110) 
58.5  51/ 58 
46  41/ 46 
150  739  
110  53  46  42  37.3  182  835  
115  51  44  40  35.7  210  885  
200/ (220) 
29  25.5 /29 
23  20.5 /23 
620  3,030  
220  26.5  23  21  18.6  780  3,420  
DC  24  94  109  255  220  Approx. 2.7  Approx. 2.8  
48  52  58  930  832  
100/ 110 
22/24.5  25/27  4,500  4,040  
125  22  23.5  5,800  5,330  
200/ 220 
11/12  12.2/13.5  18,000  16,330 
Item  Open 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 mechanism  Single  
Contact material  Ag  
Rated load  10 A at 220 VAC 7 A at 24 VDC 
5 A at 220 VAC 4 A at 24 VDC 

Rated carry current  10 A  5 A  
Max. switching voltage  250 VAC, 250 VDC  250 VAC, 250 VDC  
Max. switching current  10 A  5 A  
Max. switching power (reference value) 
2,200 VA, 168 W  1,100 VA, 96W 
Item  Open 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 mechanism  Single  
Contact material  Ag  
Rated load  7 A at 110 VDC  6 A at 110 VDC  5 A at 110 VDC  
Rated current flow  10 A  5 A  
Max. switching voltage  250 VAC, 250 VDC  250 VAC, 250 VDC  
Max. switching current  10 A  5 A  
Max. switching power (reference value) 
800 W, 20 VA *1  660 W, 20 VA *1  700 W, 20 VA *1  600 W, 20 VA *1 
Item  MM4KPJD  MM4XKPJD  

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 mechanism  Single  
Contact material  Ag  
Rated load  5 A at 220 VAC, 4 A at 24 VDC  5 A at 110 VDC  
Rated carry current  5 A  
Max. switching voltage  250 VAC, 250 VDC  
Max. switching current  5 A 
Item  Open or bifurcatedcontact Relays 

Contact resistance *2  50 mΩ max. 
Set time *3  AC: 30 ms max.; DC: 60 ms max. (minimum pulse width for AC and DC: 100 ms) 
Reset time *3  30 ms max. (minimum pulse width for AC and DC: 100 ms) 
Max. operating frequency  Mechanical: 1,800 operations/hr Electrical: 1,800 operations/hr (under rated load) 
Insulation resistance *4  100 MΩ min. (at 500 VDC) 
Dielectric strength  1,500 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 resistance  Destruction: 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 resistance  Destruction: 500 m/s^{2} Malfunction: 50 m/s^{2} 
Endurance  Mechanical: 2,500,000 operations min. (at 1,800 operations/hr) Electrical: 500,000 operations min. (at 1,800 operations/hr under rated load) *5 
Error rate (level P) (Reference value) *6 
10 mA at 5 VDC 
Ambient temperature  Operating: 10°C to 55°C (with no icing or condensation) 
Ambient humidity  Operating: 5% to 85% 
Weight  Standard Relays MM2K: Approx. 255 g MM3K: Approx. 390 g MM4K: Approx. 420 g MM2KP: Approx. 375 g MM3KP: Approx. 550 g MM4KP: Approx. 570 g DCswitching Relays MM2XK: Approx. 260 g MM2XK: Approx. 395 g MM4XK: Approx. 430 g MM2XKP: Approx. 380 g MM3XKP: Approx. 555 g MM4XKP: Approx. 580 g 
Vibration resistance  Destruction: 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 resistance  Destruction: 300 m/s^{2} Malfunction: 30 m/s^{2} 
Endurance  Mechanical: 2,500,000 operations min. (at 1,800 operations/hr) Electrical: 500,000 operations min. (at 1,800 operations/hr under rated load) *2 
Error rate (level P) (Reference value) *3 
10 mA at 5 VDC 
Ambient temperature  Operating: 10°C to 40°C (with no icing or condensation) 
Ambient humidity  Operating: 5% to 85% 
Weight  MM4KPJD: Approx. 570 g MM4XKPJD: Approx. 580 g 