OMRON MMKRelays/ General Purpose Relays/For Control Panel

OMRON MMK Relays

MMK Latching Relay/Lineup
MMK Latching Relay/Dimensions
MMK Latching Relay/Catalog
MMK Latching Relay/Specifications
Purchase the OMRON MMK For Control Panel

OMRON MMK Dimensions

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last update: December 19, 2013

• 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.

last update: December 19, 2013

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OMRON MMK lineup
MMK Latching Relay/Lineup
last update: October 21, 2015
Available Models

When your order, specify the rated voltage.

Open Coils (with Solder Terminals)

Type Contact form Relay model Available rated voltage
Standard DPDT MM2K 100/(110), 200/(220) VAC
12, 24, 48, 100/110, 200/220 VDC
3PDT MM3K 100/(110), 200/(220) VAC
48, 100/110 VDC
4PDT MM4K 200/(220) VAC
12, 24, 48, 100/110, 200/220 VDC
DC-switching DPDT MM2XK 24, 100/110 VDC
3PDT MM3XK 200/(220) VAC
100/110 VDC
4PDT MM4XK 100/(110) VAC
100/110 VDC

Open Coils (with Screw Terminals)

Type Contact form Relay model Available rated voltage
Standard DPDT MM2KB 100/(110), 200/(220) VAC
12, 24, 48, 100/110 VDC
3PDT MM3KB 100/(110), 200/(220) VAC
12, 48, 100/110 VDC
4PDT MM4KB 24, 100/(110), 200/(220) VAC
100/110 VDC
DC-switching DPDT MM2XKB 100/(110), 200/(220) VAC
12, 24, 48, 100/110, 200/220 VDC
3PDT MM3XKB 200/(220) VAC
24, 100/110 VDC
4PDT MM4XKB 24, 48, 100/110, 125, 200/220 VDC

Cased Coils (Plug-in Terminals)

Type Contact form Relay model Available rated voltage
Standard DP MM2KP 6, 12, 24, 100/(110), 200/(220) VAC
12, 24, 48, 100/110, 125, 200/220 VDC
3P MM3KP 24, 100/(110), 200/(220) VAC
6, 12, 24, 48, 100/110, 125, 200/220 VDC
4P MM4KP 24, 100/(110), 200/(220) VAC
6, 12, 24, 48, 100/110, 125, 200/220 VDC
DC-switching DP MM2XKP 24, 100/(110), 200/(220) VAC
12, 24, 48, 100/110, 125, 200/220 VDC
3P MM3XKP 100/(110), 200/(220) VAC
24, 48, 100/110, 125, 200/220 VDC
4P MM4XKP 100/(110), 200/(220) VAC
6, 12, 24, 48, 100/110, 125, 200/220 VDC
Conforming to auxiliary power relay
specifications 4P MM4KP-JD 24, 100/(110), 115, 200/(220) VAC
24, 100/110, 125, 200/220 VDC
Conforming to auxiliary power relay
specifications for DC-switching 4P MM4XKP-JD 100/(110), 115, 200/(220) VAC
24, 48, 100/110, 125, 200/220 VDC

Accessories (Order Separately)
Sockets

Relay DIN Track/Front-connecting Socket Back-connecting Socket
Screw terminals Solder terminals
MM2(X)KP 11PFA
PL11
MM3(X)KP
MM4(X)KP 14PFA PL15
MM4(X)KP-JD 14PFA ---

Mounting Brackets

Contact form Model
DPDT R99-03 (S KANAGU) FOR MM2K.611K
3PDT R99-03 (S KANAGU) FOR MM3K.612K
4PDT R99-03 (S KANAGU) FOR MM4K.613K

last update: October 21, 2015

OMRON MMK dimension
MMK Latching Relay/Dimensions
last update: April 2, 2018

(Unit: mm)

Open Relays with Solder Terminals
MM2(X)K, MM3(X)K, MM4(X)K

Note: Connect the common (C) of MM[]XK to positive (+).

Open Relays with Screw Terminals
MM2(X)KB, MM3(X)KB, MM4(X)KB

Note: Connect the common (C) of MM[]XKB to positive (+).

Mounting Holes (Direct Mounting)

Note: The tolerance is ±0.2.

Mounting Bracket (S Bracket)
R99-03 (S KANAGU) FOR MM[]

Cased Relays with Plug-in Terminal
MM2(X)KP

Note: It is recommended that 55 mm min. is allowed for this side because the MM2XKP has a curved protective plate on
the side.

MM3(X)KP, MM4(X)KP

Note: It is recommended that 73 mm min. is allowed for this side because the MM3XKP and MM4XKP have a curved
protective plate on the side.

MM4KP-JD

MM4XKP-JD

last update: April 2, 2018

OMRON MMK catalog
MMK Latching Relay/Catalog

Catalog

Manual

CAD

English
Global Edition

For ordering in Singapore, please note some product models not sold in Singapore may be included in the following catalog(s) for our global customers.
*It is recommended to select “Save” from the right-click due to large size of catalog PDF data.

Catalog Name Catalog Number
[size] Last Update

MMK Data Sheet -
[2115KB] Apr 02, 201820180402 MMK Data Sheet

OMRON MMK specification
MMK Latching Relay/Specifications
last update: September 07, 2016
Coil Ratings
Set Coil

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

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 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

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
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

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

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

DC-switching Relays

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

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.
*1. Refer to Switching an Switching an AC Load with a DC-switching Model ("X" Model) on Data Sheet.

Contacts (Conforming to Auxiliary Power Relay Specifications)

Item MM4KP-JD MM4XKP-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 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

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

Item Open or bifurcated-contact 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/s²
Malfunction: 50 m/s²
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
DC-switching 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

*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 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/s²
Malfunction: 30 m/s²
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 MM4KP-JD: Approx. 570 g
MM4XKP-JD: Approx. 580 g

*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.

last update: September 07, 2016

NO. MMK

TYPE:General Purpose Relays For Control Panel Copyright Statement

DATE:2021-06-16

Associated products:
MM Power Relay/Features G4Q Ratchet Relay/Features

Type	Contact form	Relay model	Available rated voltage
Standard	DPDT	MM2K	100/(110), 200/(220) VAC 12, 24, 48, 100/110, 200/220 VDC
3PDT	MM3K	100/(110), 200/(220) VAC 48, 100/110 VDC
4PDT	MM4K	200/(220) VAC 12, 24, 48, 100/110, 200/220 VDC
DC-switching	DPDT	MM2XK	24, 100/110 VDC
3PDT	MM3XK	200/(220) VAC 100/110 VDC
4PDT	MM4XK	100/(110) VAC 100/110 VDC

Type	Contact form	Relay model	Available rated voltage
Standard	DPDT	MM2KB	100/(110), 200/(220) VAC 12, 24, 48, 100/110 VDC
3PDT	MM3KB	100/(110), 200/(220) VAC 12, 48, 100/110 VDC
4PDT	MM4KB	24, 100/(110), 200/(220) VAC 100/110 VDC
DC-switching	DPDT	MM2XKB	100/(110), 200/(220) VAC 12, 24, 48, 100/110, 200/220 VDC
3PDT	MM3XKB	200/(220) VAC 24, 100/110 VDC
4PDT	MM4XKB	24, 48, 100/110, 125, 200/220 VDC

Type	Contact form	Relay model	Available rated voltage
Standard	DP	MM2KP	6, 12, 24, 100/(110), 200/(220) VAC 12, 24, 48, 100/110, 125, 200/220 VDC
3P	MM3KP	24, 100/(110), 200/(220) VAC 6, 12, 24, 48, 100/110, 125, 200/220 VDC
4P	MM4KP	24, 100/(110), 200/(220) VAC 6, 12, 24, 48, 100/110, 125, 200/220 VDC
DC-switching	DP	MM2XKP	24, 100/(110), 200/(220) VAC 12, 24, 48, 100/110, 125, 200/220 VDC
3P	MM3XKP	100/(110), 200/(220) VAC 24, 48, 100/110, 125, 200/220 VDC
4P	MM4XKP	100/(110), 200/(220) VAC 6, 12, 24, 48, 100/110, 125, 200/220 VDC
Conforming to auxiliary power relay specifications	4P	MM4KP-JD	24, 100/(110), 115, 200/(220) VAC 24, 100/110, 125, 200/220 VDC
Conforming to auxiliary power relay specifications for DC-switching	4P	MM4XKP-JD	100/(110), 115, 200/(220) VAC 24, 48, 100/110, 125, 200/220 VDC

Relay	DIN Track/Front-connecting Socket	Back-connecting Socket
Screw terminals	Solder terminals
MM2(X)KP	11PFA	PL11
MM3(X)KP MM4(X)KP	14PFA	PL15
MM4(X)KP-JD	14PFA	---

Contact form	Model
DPDT	R99-03 (S KANAGU) FOR MM2K.611K
3PDT	R99-03 (S KANAGU) FOR MM3K.612K
4PDT	R99-03 (S KANAGU) FOR MM4K.613K

For ordering in Singapore, please note some product models not sold in Singapore may be included in the following catalog(s) for our global customers.
*It is recommended to select “Save” from the right-click due to large size of catalog PDF data.
Catalog Name	Catalog Number [size]	Last Update
MMK Data Sheet	- [2115KB]	Apr 02, 201820180402	MMK Data Sheet

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	MM4KP-JD	MM4XKP-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 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 bifurcated-contact 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/s² Malfunction: 50 m/s²
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 DC-switching 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/s² Malfunction: 30 m/s²
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	MM4KP-JD: Approx. 570 g MM4XKP-JD: Approx. 580 g

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