• A large selection of models including various contact forms,
DC-switching models, and open models.
• Mechanical life: 5,000,000 operations; electrical life
(under rated load): 500,000 operations.
• Models also available with built-in diodes and for use as
auxiliary power relays.
Refer to
Safety Precautions for All Relays.
Ordering Information
Type
Contact form
Open structure
Solder terminals
Standard
DPDT
3PDT
4PDT
DC-switching
DPDT
3PDT
4PDT
With built-in diode
DC-switching with built-in diode
With operation indicator
DPDT
4PDT
DPDT
4PDT
DPDT
3PDT
4PDT
DC-switching with operation indicator
DPDT
3PDT
4PDT
Conforming to auxiliary power relay speci-
4PDT
fications
MM2
MM3
MM4
MM2X
MM3X
MM4X
---
---
---
---
---
---
---
---
---
---
---
---
Screw terminals
MM2B
MM3B
MM4B
MM2XB
MM3XB
MM4XB
---
---
---
---
---
---
---
---
---
---
---
---
Cased
Plug-in (octal pins)
terminals
MM2P
MM3P
MM4P
MM2XP
MM3XP
MM4XP
MM2P-D
MM4P-D
MM2XP-D
MM4XP-D
MM2PN
MM3PN
MM4PN
MM2XPN
MM3XPN
MM4XPN
MM4P-JD
MM4XP-JD
■
Available Models
Open Coils (with Solder Terminals)
Type
Standard
DP
3P
4P
DC-switching
DP
3P
4P
Contact form
MM2
MM3
MM4
MM2X
MM3X
MM4X
Relay model
Available rated voltage
6, 12, 24, 50, 100/(110), 200/(220) VAC
6, 12, 24, 48, 100/110, 200/220 VDC
100/(110), 200/(220) VAC
6, 12, 24, 48, 200/220 VDC
24, 100/(110), 200/(220) VAC
6, 12, 24, 48, 100/110, 200/220 VDC
100/(110), 200/(220) VAC
6, 12, 24, 48, 100/110, 200/220 VDC
100/(110), 200/(220) VAC
12, 24, 100/110 VDC
100/(110), 200/(220) VAC
12, 24, 48, 100/110 VDC
1
MM
Open Coils (with Screw Terminals)
Type
Standard
DP
3P
4P
DC-switching
DP
3P
4P
Contact form
Relay model
MM2B
MM3B
MM4B
MM2XB
MM3XB
MM4XB
Available rated voltage
6, 12, 24, 50, 100/(110), 200/(220) VAC
12, 24, 48, 100/110, 125, 200/220 VDC
6, 100/(110), 200/(220) VAC
12, 24, 100/110 VDC
6, 100/(110), 200/(220) VAC
12, 24, 48, 100/110 VDC
24, 100/(110), 200/(220) VAC
12, 24, 48, 100/110, 125, 200/220 VDC
100/(110), 200/(220) VAC
12, 24, 48, 100/110, 125, 200/220 VDC
12, 24, 100/(110), 200/(220) VAC
6, 12, 24, 48, 100/110, 200/220 VDC
Cased Coils (Plug-in Terminals)
Type
Standard
DP
3P
4P
DC-switching
DP
3P
4P
With built-in diode
DC-switching with built-in diode
With operation indicator
DP
DP
DP
3P
4P
DC-switching with operation indicator
DP
3P
4P
Conforming to auxiliary power relay
specifications
Conforming to auxiliary power relay
specifications for DC-switching
4P
4P
Contact form
Relay model
MM2P
MM3P
MM4P
MM2XP
MM3XP
MM4XP
MM2P-D
MM4P-D
MM2XP-D
MM4XP-D
MM2PN
MM3PN
MM4PN
MM2XPN
MM3XPN
MM4XPN
MM4P-JD
MM4XP-JD
Available rated voltage
6, 12, 24, 50, 100/(110), 200/(220) VAC
6, 12, 24, 48, 100/110, 125, 200/220 VDC
6, 24, 100/(110), 200/(220) VAC
6, 12, 24, 48, 100/110, 125, 200/220 VDC
6, 24, 50, 100/(110), 200/(220) VAC
12, 24, 48, 100/110, 125, 200/220 VDC
6, 24, 100/(110), 125, 200/(220) VAC
6, 12, 24, 48, 100/110, 125, 200/220 VDC
24, 50, 100/(110), 200/(220) VAC
12, 24, 48, 100/110, 125, 200/220 VDC
12, 24, 50, 100/(110), 200/(220) VAC
6, 12, 24, 48, 100/110, 125, 200/220 VDC
12, 24, 48, 100/110, 200/220 VDC
12, 24, 48, 100/110, 125, 200/220 VDC
12, 24, 48, 100/110, 125, 200/220 VDC
12, 24, 48, 100/110, 125, 200/220 VDC
6, 24, 100/(110), 200/(220) VAC
6, 12, 24, 48, 100/110, 125, 200/220 VDC
100/(110), 200/(220) VAC
6, 12, 24, 48, 100/110, 200/220 VDC
24, 100/(110), 200/(220) VAC
24, 48, 100/110, 125, 200/220 VDC
100/(110), 200/(220) VAC
12, 24, 48, 100/110, 125, 200/220 VDC
100/(110), 200/(220) VAC
24, 48, 100/110, 200/220 VDC
100/(110), 200/(220) VAC
12, 24, 48, 100/110, 125, 200/220 VDC
100/(110), 110, 115, 200/(220), 220 VAC
24, 100/110, 125, 200/220 VDC
100/(110), 110, 115, 200/(220) VAC
24, 48, 100/110, 125, 200/220 VDC
Models Conforming to Auxiliary Power Relay Specifications
The MM4P-JD and MM4XP-JD satisfy the ratings of auxiliary relays provided in JEC-2500 (1987) standards for power protective relays specified
by the Japan Electromechanical Commission. Furthermore, the MM4P-JD and MM4XP-JD satisfy the ratings of multi-contact relays provided in
JEC-174D (1979) standards for power auxiliary relays.
These models work at operation level B specified by JEC-174D (1979) standards and the hot start of the relays is possible after the coils radiate
heat.
In accordance with JEC-2500 (1987) standards, the coil of each model withstands a 130% DC load or 115% AC load.
Note:
1. When ordering, add the rated coil voltage to the model number. Rated coil voltages are given in the coil ratings table.
Example: MM2, 6 VAC
Rated coil voltage
2. Latching Relays based on the MM Series are also available. Refer to the MMK.
3. Models with built-in varistors (AC operation) are also available in addition to those with built-in diodes. Ask your OMRON repre-
sentative for details.
2
MM
Model Number Legend
MM@@@@-@
1
2
3 4
5
1. Contact Form
2:
DPDT
3:
3PDT
4:
4PDT
2. Type (See Note.)
None: Standard
X:
DC-switching
3. Terminal Shape
None: Solder
B:
Screw
P:
Plug-in
4. Operation Indicator
None: Not provided
N:
Provided
5. Built-in Diode
None: Not provided
D:
Provided
Note:
The suffix “JD” indicates models conforming to auxiliary power
relay specifications.
■
Accessories (Order Separately)
Mounting Brackets
Mounting Bracket (S bracket)
R99-03MM
Sockets
Relay model
MM2(X)P(-D)
MM3P
DIN Track/Front-connecting Socket
(screw terminals)
8PFA
PL08
Back-connecting Socket
(solder terminals)
11PFA
PL11
MM3XP, MM4(X)P(-D)
MM4(X)P-JD
14PFA
14PFA
PL15
---
3
MM
Specifications
■
Coil Ratings
Open Coils (with Solder or Screw Terminals)
Rated voltage
(V)
50 Hz
AC
6
12
24
50
100/(110)
200/(220)
DC
6
12
24
48
100/110
200/220
790
395
195
94
47
23.5
340
176
87
41
17/19
8.6/9.5
Rated current (mA)
DP
60 Hz
655
325
160
78
39/45
3P or 4P
50 Hz
1,120
560
280
134
67
450
220
94
52
22/24.5
11/12
60 Hz
950
480
240
114
57/66
28.5/33
1.1
4.7
19
82
340
1,540
17.5
68
275
1,180
5,750
23,200
0.5
2.0
8.5
36
150
620
13.4
54
255
930
4,500
18,000
70% max. 10% min.
Approx. 2.1 (DP)
Approx. 2.7 (3P or
4P)
Coil resistance (Ω)
DP
3P or 4P
Must-
operate
voltage
Must-
release
voltage
Max.
voltage
Power consumption
(VA or W)
Initial
Approx.
4.1 (DP)
Approx.
6.3 (3P or
4P)
Rated
Approx.
3.5 (DP)
Approx.
5.1 (3P or
4P)
% of rated voltage
80% max. 30% min. 110%
(60 Hz)
25% min.
(50 Hz)
19.5/ 22.5 33.5
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 values are reference values.
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.
Cased Coils (Plug-in Terminals)
The rated current may vary if the Relay has a built-in operating indicator (See note 4.).
Rated voltage
(V)
Rated current (mA)
DP
50 Hz
AC
6
12
24
50
690
345
170
82
60 Hz
590
295
145
70
35/40
17.5/
20
3P or 4P
50 Hz
975
490
245
117
58.5
29
450
220
94
52
22/24.5
11/12
60 Hz
850
430
210
102
51/58
25.5/
29
1.1
4.7
19
82
340
1,540
17.5
68
275
1,180
5,750
Coil resistance
(Ω)
DP
3P or
4P
0.5
2.0
8.5
36
150
620
13.4
54
255
930
4,500
Coil inductance (H)
DP
3P or 4P
Must- Must-
Max.
operate release voltage
voltage voltage
% of rated voltage
80%
max.
110%
30%
min.
(60 Hz)
25%
min.
(50 Hz)
Power
consumption
(VA or W)
Initial
Ap-
prox.
4.1
(DP)
Ap-
prox.
6.3 (3P
or 4P)
Rated
Ap-
prox.
3.5
(DP)
Ap-
prox.
5.1 (3P
or 4P)
Contact Contact Contact Contact
release operate release operate
0.02
0.07
0.28
1.2
4.8
20
0.2
0.74
4.2
20.4
81.6
0.02
0.01
0.41
1.7
6.7
25.6
0.36
1.0
5.8
26
92.5
380
0.01
0.04
0.18
0.75
3
12
0.23
0.87
5.6
27.3
61.4
158
0.03
0.07
0.28
1.2
4.5
19
0.35
1.4
9.2
45.5
96.5
250
100/(110) 41
200/(220) 20.5
DC
6
12
24
48
100/110
200/220
340
176
87
41
17/19
8.6/9.5
70%
max.
10%
min.
Approx. 2.1 (DP)
Approx. 2.7 (3P
or 4P)
23,200 18,000 340
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.
5.
The rated current of a model with a built-in LED indicator at 6, 12, 24, or 50 VAC or 6, 12, 24, or 48 VDC increases by approx. 10 mA due
to the current consumption of the LED. The rated current of a model with a built-in neon lamp indicator at 100/(110) or 200/(220) VAC or
100/110 or 200/220 VDC increases by approx. 0.2 mA due to the current consumption of the neon lamp.
4
MM
Coils (Conforming to Auxiliary Power Relay Specifications)
Rated voltage
(V)
Rated current (mA)
Coil
Coil inductance (H)
resis-
tance (Ω)
Contact
release
8.5
36
150
182
210
620
780
255
930
4,500
5,800
18,000
0.18
0.75
3
3.6
4
12
15
5.6
27.3
61.4
90
158
Contact
operate
0.28
1.2
4.5
5.5
6.2
19
21
9.2
45.5
96.5
130
250
70% max. 10% min.
Approx. 2.7
Must-
operate
voltage
Must-
release
voltage
Max.
voltage
Opera- Power consumption
tion level
(VA or W)
(JEC-
174D)
Initial
Rated
B
Hot start
after coil
heated
Approx.
6.3
Approx.
5.1
50 Hz
AC
24
50
100/(110)
110
115
200/(220)
220
DC
24
48
100/110
125
200/220
245
117
58.5
53
51
29
26.5
94
52
22/24.5
22
11/12
60 Hz
210
102
51/58
46
44
25.5/29
23
% of rated voltage
80% max. 30% min. 110%
(60 Hz)
25% min.
(50 Hz)
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 23°C and not continuously.
■
Contact Ratings
Standard Relays
Item
Open Relays
MM2(B), MM3(B), MM4(B)
Resistive load
(cosφ = 1)
Contact type
Contact material
Rated load
Rated carry current
Max. switching voltage
Max. switching current
Max. switching power
(reference value)
Single
Ag
15 A at 220 VAC
10 A at 24 VDC
15 A
250 VAC, 250 VDC
15 A
3,300 VA at 240 W
7.5 A at 220 VAC
5 A at 24 VDC
7.5 A
250 VAC, 250 VDC
7.5 A
1,700 VA at 120 W
Inductive load
(cosφ=0.4, L/R=7 ms)
Cased Relays
MM2P(N, -D), MM3P(N), MM4P(N, -D)
Resistive load
(cosφ = 1)
Inductive load
(cosφ=0.4, L/R=7 ms)
Minimum permissible load
5 VDC 10 mA
(reference value) (See note.)
Note:
This value is measured at 60 operations/min.
DC-switching Relays/Built-in Diode Relays
Item
Open Relays
MM2X(B), MM3X(B), MM4X(B)
Resistive load
(cosφ = 1)
Contact type
Contact material
Rated load
Rated carry current
Max. switching voltage
Max. switching current
Max. switching power
(reference value)
Single
Ag
10 A at 110 VDC
15 A
250 VAC, 250 VDC
15 A
1,200 W at 20 VA
800 W at 20 VA
7 A at 110 VDC
7 A at 110 VDC
7.5 A
250 VAC, 250 VDC
7.5 A
800 W at 20 VA
660 W at 20 VA
6 A at 110 VDC
Inductive load
(L/R=7 ms)
Cased Relays
MM2XP(-D), MM3XP, MM4XP(-D)
Resistive load
(cosφ = 1)
Inductive load
(L/R=7 ms)
Minimum permissible load
5 VDC at 10 mA
(reference value) (See note 3.)
Note: 1.
When switching DC inductive loads at 125 V or more, an unstable region exists for a contact current of between 0.5 and 2.5 A. The Relay will not turn OFF
in this region. Use a contact 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.
