Power Relay
MM
CSM_MM_DS_E_2_1
Stable Contact Reliability and Long Life
• Easy to mount, wire, and use.
• 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
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Screw terminals
MM2B
MM3B
MM4B
MM2XB
MM3XB
MM4XB
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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
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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
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.
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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.
3.
This value is measured at 60 operations/min.
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