Omron MK-SX DATASHEET

New Product

Power Relays

MK-S(X)

MK-S-series Relays with DC-switching
Models That Can Switch 220 VDC, 10 A
(Resistive Load).

• Switch a DC load of 220 VDC, 10 A (resistive load).

• Models for AC Loads can switch 250 VAC, 15 A (resistive load).

• Lineup includes models with SPST-NO and SPST-NO/SPST­NC contact forms.

• Using a SPST-NO/SPST-NC contact form enables detecting
contact welding. (When the NO contacts become welded, the
NC contacts will maintain a minimum distance of 0.5 mm.)

• Models available with operation indicators and built-in test
buttons.

• RoHS compliant.

• Standards: UL, IEC (TÜV certification)
(Application for the above standards has been made using the
P7MF-06 and P7MF-06-D Sockets (sold separately).)

Ordering Information

General-purpose Relays

Models for DC Loads

Contact form SPST-NO SPST-NO/SPST-NC

Type Rated coil voltage (V) Model Rated coil voltage (V) Model

Standard Models

Models with Built-in
Operation Indicators

Models with Test Button

Models with Test Button and
Built-in Operation Indicators

AC: 24, 100, 110, 120, 200, 220, 230, 240
DC: 12, 24, 48, 110, 220 DC: 12, 24, 48, 110, 220
AC: 24, 100, 110, 120, 200, 220, 230, 240
DC: 12, 24, 48, 110, 220 DC: 12, 24, 48, 110, 220
AC: 24, 100, 110, 120, 200, 220, 230, 240
DC: 12, 24, 48, 110, 220 DC: 12, 24, 48, 110, 220
AC: 24, 100, 110, 120, 200, 220, 230, 240
DC: 12, 24, 48, 110, 220 DC: 12, 24, 48, 110, 220

MKS1XT-10

MKS1XTN-10

MKS1XTI-10

MKS1XTIN-10

Models for AC Loads

Contact form SPST-NO SPST-NO/SPST-NC

Type Rated coil voltage (V) Model Rated coil voltage (V) Model

Standard Models

Models with Built-in
Operation Indicators

Models with Test Button

Models with Test Button and
Built-in Operation Indicators

AC: 24, 100, 110, 120, 200, 220, 230, 240
DC: 12, 24, 48, 110, 220 DC: 12, 24, 48, 110, 220
AC: 24, 100, 110, 120, 200, 220, 230, 240
DC: 12, 24, 48, 110, 220 DC: 12, 24, 48, 110, 220
AC: 24, 100, 110, 120, 200, 220, 230, 240
DC: 12, 24, 48, 110, 220 DC: 12, 24, 48, 110, 220
AC: 24, 100, 110, 120, 200, 220, 230, 240
DC: 12, 24, 48, 110, 220 DC: 12, 24, 48, 110, 220

MKS1T-10

MKS1TN-10

MKS1TI-10

MKS1TIN-10

AC: 24, 100, 110, 120, 200, 220, 230, 240

AC: 24, 100, 110, 120, 200, 220, 230, 240

AC: 24, 100, 110, 120, 200, 220, 230, 240

AC: 24, 100, 110, 120, 200, 220, 230, 240

AC: 24, 100, 110, 120, 200, 220, 230, 240

AC: 24, 100, 110, 120, 200, 220, 230, 240

AC: 24, 100, 110, 120, 200, 220, 230, 240

AC: 24, 100, 110, 120, 200, 220, 230, 240

MKS2XT-11

MKS2XTN-11

MKS2XTI-11

MKS2XTIN-11

MKS2T-11

MKS2TN-11

MKS2TI-11

MKS2TIN-11

Accessory (Order Separately)

Connecting Socket

Classifications Built-in diode Model

Back-connecting Socket PCB Terminals No P7M-06P

Front-connecting Socket

Mounts to DIN Track or via
screws

No P7MF-06

Yes P7MF-06-D

1

MK-S(X)

Specifications

Ratings

Operating Coil

Item Rated current (mA)

Rated voltage (V) 50 Hz 60 Hz Percentage of rated voltage

24 110 96.3 48.4
100 26.6 23.1 760
110 24.2 21.0 932

AC

DC

120 22.2 19.3 1,130
200 13.3 11.6 3,160
220 12.1 10.5 3,550
230 11.5 10.0 4,250
240 11.0 9.6 4,480

12 126 95

24 63.2 380

48 32.0 1,500
110 13.6 8,060
220 6.8 32,200

Coil

resistance

(Ω)

Must

operate

voltage (V)

80% max.

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 maximum allowable voltage is the maximum value of the allowable voltage range for the operating power supply for the relay coil.

There is no continuous allowance.

4. The rated current is approximately 5 mA higher for Models with Built-in Operation Indicators (DC operating coils).

Must

release

voltage (V)

30% min. at

60 Hz

25% min. at

50 Hz

15% min. Approx. 1.5 W

Maximum

voltage

allowable (V)

110%

Power

consumption

(VA, W)

Approx. 2.3 VA

at 60 Hz

Approx. 2.7 VA

at 50 Hz

2

MK-S(X)

Contact Ratings for Models for DC Loads

Contact form SPST-NO SPST-NO/SPST-NC

Model MKS1XT(I)(N)-10 MKS2XT(I)(N)-11

Load

Item L/R = 7 ms DC13 class L/R = 7 ms DC13 class

Contact configuration

Contact material AgSnIn AgSnIn

Rated load

Rated carry current

Max. switching voltage

Max. switching current

Max. switching capacity
(reference value)

NO Double-break Double-break
NC --- Single-break

NO 10 A, 220 VDC 5 A, 220 VDC 0.4 A, 220 VDC 5 A, 220 VDC 3 A, 220 VDC 0.2 A, 220 VDC
NC --- 2 A, 220 VDC 0.3 A, 220 VDC 0.1 A, 220 VDC
NO 10 A 5 A
NC --- 2 A
NO 220 VDC
NC --­NO 10 A 5 A
NC --- 2 A
NO 2,200 W --- --- 1,100 W --- --­NC --- 440 W --- ---

Resistive load

Note: If the L/R of an inductive load exceeds 7 ms with a Model for a DC Load, the arc interruption time must be less than approximately 50 ms

to use the Relay. Design the circuit so that the arc interruption time is 50 ms or less.

* These values apply to a switching frequency of 30 times per minute.

Inductive load

Resistive load

Inductive load

220 VDC

Contact Ratings for Models for AC Loads

Contact form SPST-NO SPST-NO/SPST-NC

Model MKS1T(I)(N)-10 MKS2T(I)(N)-11

Load

Item

Contact configuration

Contact material AgSnIn AgSnIn

Rated load

Rated carry current

Max. switching voltage

Max. switching current

Max. switching capacity
(reference value)

NO Double-break Double-break
NC --- Single-break

NO 15 A, 250 VAC 15 A, 250 VAC
NC --- 5 A, 250 VAC
NO 15 A 15 A
NC --- 5 A
NO 250 VAC
NC --­NO 15 A 15 A
NC --- 5 A
NO 3,750 VA 3,750 VA
NC --- 1,250 VA

* These values apply to a switching frequency of 20 times per minute.

Resistive load Resistive load

250 VAC

3

MK-S(X)

Characteristics

Contact resistance *1 100 mΩ max.

Operate time *2

Release time *2 20 ms max.

Max. operating
frequency

Insulation resistance *3 100 MΩ min.

Dielectric
strength

Vibration
resistance

Shock
resistance

Endurance

Failure rate P level (reference value) 10 mA at 24 VDC

Ambient operating temperature

Ambient operating humidity 5% to 85%
Weight SPST-NO: Approx. 73 g, SPST-NO/SPST-NC: Approx. 82 g

Mechanical 18,000 operations/h

Rated load

Between coil and contacts 2,500 VAC 50/60 Hz for 1 min between
Between contacts of different polarity 2,500 VAC 50/60 Hz for 1 min between
Between contacts of same polarity 1,000 VAC 50/60 Hz for 1 min
Destruction 10 to 55 to 10 Hz, 0.50-mm single amplitude (1.0-mm double amplitude)
Malfunction 10 to 55 to 10 Hz, 0.75-mm single amplitude (1.5-mm double amplitude)

Destruction

Malfunction 100 m/s
Mechanical 1,000,000 operations min. (at 18,000 operations/hr)
Electrical *4 100,000 operations min. (at rated load and maximum switching frequency)

Note: The values given above are initial values.

*1. The contact resistance was measured for 1 A at 5 VDC using the voltage drop method.
*2. The operate time was measured with the rated voltage imposed and any contact bounce ignored at an ambient temperature of 23°C.
*3. The insulation resistance was measured with a 500-VDC insulation resistance tester at the same places as those used for checking the

dielectric strength.

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

AC: 20 ms max.
DC: 30 ms max.

Models for DC loads: 1,800 times/hour
Models for AC loads: 1,200 times/hour

Back-connecting Socket (P7M-06P) mounting: 1,000 m/s
Front-connecting Socket (P7MF-06(-D)) mounting:500m/s

2

−40°C to 60°C (with no icing or condensation)
Note: The range is −25°C to 60°C for models with built-in operation indicators.

2

2

Approved Standards

UL508 (File No. E41515)

Model Coil ratings Contact ratings

MKS1XT@-@

MKS2XT@-@

MKS1T@-@ NO contacts 15 A, 250 VAC (Resistive)

MKS2T@-@

12 to 220 VDC
24 to 240 VAC

NO contacts

NO contacts

NC contacts

NO contacts 15 A, 250 VAC (Resistive)
NC contacts

10 A, 220 VDC (Resistive)
5 A, 220 VDC L/R (T

0.4 A, 220 VDC L/R (T
5 A, 220 VDC (Resistive)

3 A, 220 VDC L/R (T

0.2 A, 220 VDC L/R (T
2 A, 220 VDC (Resistive)

0.3 A, 220 VDC L/R (T

0.1 A, 220 VDC L/R (T

5 A, 250 VAC (Resistive)

0.632) = 7 ms

0.95) = 300 ms

0.632) = 7 ms

0.95) = 300 ms

0.632) = 7 ms

0.95) = 300 ms

CSA Standard: CSA Certification by : CSA C22.2 No.14

IEC Standard/TÜV Certification: IEC61810-1 (Certification No. R50104853)

Model Coil ratings Contact ratings

MKS1XT@-@

12, 24, 48, 110,

MKS2XT@-@

MKS1T@-@ NO contacts AC-1: 15 A, 250 VAC 50/60 Hz

MKS2T@-@

220 VDC
24, 100, 110, 120,
200, 220, 230,
240 VAC

NO contacts

NO contacts

NC contacts

NO contacts AC-1: 15 A, 250 VAC 50/60 Hz
NC contacts

DC-1: 10 A, 220 VDC
5 A, 220 VDC L/R (T
DC-13: 0.4 A, 220 VDC

DC-1: 5 A, 220 VDC
3 A, 220 VDC L/R (T
DC-13: 0.2 A, 220 VDC

DC-1: 2 A, 220 VDC

0.3 A, 220 VDC L/R (T
DC-13: 0.1 A, 220 VDC

AC-1: 5 A, 250 VAC 50/60 Hz

0.632) = 7 ms

0.632) = 7 ms

0.632) = 7 ms

Operations

6,000

Operations

100,000

*

4