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MK-S(X)

Power Relays

MK-S(X)

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

Ratings

Operating Coil

Item Rated current
(mA)
Coil
resistance
(Ω)
Must
operate
voltage (V)
Must
release
voltage (V)
Maximum
voltage
allowable (V)
Power
consumption
(VA, W)
Rated voltage (V) 50 Hz 60 Hz Percentage of rated voltage
AC 24 110 96.3 48.4 80% max. 30% min. at 60 Hz
25% min. at 50 Hz
110% Approx. 2.3 VA
at 60 Hz
Approx. 2.7 VA
at 50 Hz
100 26.6 23.1 760
110 24.2 21.0 932
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
DC 12 126 95 15% min. Approx. 1.5 W
24 63.2 380
48 32.0 1,500
110 13.6 8,060
220 6.8 32,200

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).

Contact Ratings for Models for DC Loads

Load Resistive
load
Inductive load Resistive
load
Inductive load
L/R = 7 ms DC13 class L/R = 7 ms DC13 class
Contact configuration NO Double-break Double-break
NC --- Single-break
Contact material AgSnIn AgSnIn
Rated load 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
Rated carry current NO 10 A 5 A
NC --- 2 A
Max. switching voltage NO 220 VDC 220 VDC
NC ---
Max. switching current NO 10 A 5 A 0.4 A 5 A 3 A 0.2 A
NC --- 2 A 0.3 A 0.1 A
Max. switching capacity
(reference value)
NO 2,200 W --- --- 1,100 W --- ---
NC --- 440 W --- ---

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.

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 Resistive load Resistive load
Contact configuration NO Double-break Double-break
NC --- Single-break
Contact material AgSnIn AgSnIn
Rated load NO 15 A, 250 VAC 15 A, 250 VAC
NC --- 5 A, 250 VAC
Rated carry current NO 15 A 15 A
NC --- 5 A
Max. switching voltage NO 250 VAC 250 VAC
NC ---
Max. switching current NO 15 A 15 A
NC --- 5 A
Max. switching capacity (reference value) NO 3,750 VA 3,750 VA
NC --- 1,250 VA

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

Characteristics

Contact resistance *1 100 mΩ max.
Operate time *2 AC: 20 ms max.
DC: 30 ms max.
Release time *2 20 ms max.
Max.
operating
frequency
Mechanical 18,000 operations/h
Rated load Models for DC loads: 1,800 times/hour
Models for AC loads: 1,200 times/hour
Insulation resistance *3 100 MΩ min.
Dielectric
strength
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
Vibration
resistance
Destruction 10 to 55 to 10 Hz, 0.75-mm single amplitude (1.5-mm double amplitude)
Malfunction 10 to 55 to 10 Hz, 0.50-mm single amplitude (1.0-mm double amplitude)
Shock
resistance
Destruction Back-connecting Socket (P7M-06P) mounting: 1,000 m/s2
Front-connecting Socket (P7MF-06(-D)) mounting:500m/s2
Malfunction 100 m/s2
Endurance Mechanical 1,000,000 operations min. (at 18,000 operations/hr)
Electrical *4 100,000 operations min. (at rated load and maximum switching frequency)
Failure rate P level (reference value) 10 mA at 24 VDC
Ambient operating temperature -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.
Ambient operating humidity 5% to 85%
Weight SPST-NO: Approx. 73 g, SPST-NO/SPST-NC: Approx. 82 g

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.

Approved Standards

UL508 (File No. E41515)

Model Coil ratings Contact ratings Operations
MKS1XT[]-[] 12 to 220 VDC
24 to 240 VAC
NO contacts 10 A, 220 VDC (Resistive)
5 A, 220 VDC L/R (T0.632) = 7 ms
0.4 A, 220 VDC L/R (T0.95) = 300 ms
6,000
MKS2XT[]-[] NO contacts 5 A, 220 VDC (Resistive)
3 A, 220 VDC L/R (T0.632) = 7 ms
0.2 A, 220 VDC L/R (T0.95) = 300 ms
NC contacts 2 A, 220 VDC (Resistive)
0.3 A, 220 VDC L/R (T0.632) = 7 ms
0.1 A, 220 VDC L/R (T0.95) = 300 ms
MKS1T[]-[] NO contacts 15 A, 250 VAC (Resistive)
MKS2T[]-[] NO contacts 15 A, 250 VAC (Resistive)
NC contacts 5 A, 250 VAC (Resistive)

CSA Standard: CSA Certification by : CSA C22.2 No.14
IEC Standard/TÜV Certification: IEC61810-1 (Certification No. R50104853)

Model Coil ratings Contact ratings Operations
MKS1XT[]-[] 12, 24, 48, 110, 220 VDC
24, 100, 110, 120, 200, 220,
230, 240 VAC
NO contacts DC-1: 10 A, 220 VDC
5 A, 220 VDC L/R (T0.632) = 7 ms
DC-13: 0.4 A, 220 VDC
100,000
MKS2XT[]-[] NO contacts DC-1: 5 A, 220 VDC
3 A, 220 VDC L/R (T0.632) = 7 ms
DC-13: 0.2 A, 220 VDC
NC contacts DC-1: 2 A, 220 VDC
0.3 A, 220 VDC L/R (T0.632) = 7 ms
DC-13: 0.1 A, 220 VDC
MKS1T[]-[] NO contacts AC-1: 15 A, 250 VAC 50/60 Hz
MKS2T[]-[] NO contacts AC-1: 15 A, 250 VAC 50/60 Hz
NC contacts AC-1: 5 A, 250 VAC 50/60 Hz