Original Factory Motor Overload Relay - Automotive relay-YS5128-1A – Yishen

Ordering Informati
1.Part number: 5128
Contact arrangement: 1A:1A; 1B:1 Form B, 1C:1C;
3 Coil rated voltage(V): DC:3,5,6,9,12,18,24
Contact Data

 Contact Arrangement 1A (1H) (SPSTNO) 1B (1D) (SPDT(B-M))
 Contact Material AgSNO2
 Contact Rating (resistive) 25A,35A,40A/14VDC20A/27VDC
Switching Power (Max.) 1000W
 Switching Voltage (Max.)  16VDC  (Max Switching Current: 40A)
 Contact Resistance or Voltage drop ≤50mV(10A)
 Life  Electrical  105      Item 4.30 of IEC 61810-7
 Life  Mechanical  107      Item 4.31 of IEC 61810-7

Operation condition

Insulation Resistance  100MΩ min (at 500VDC)  Item 7 of IEC 60255-5
Dielectric Strength
Between contacts
Between contact and coil
50Hz 500V
50Hz 750V
 Item 6 of IEC 60255-5
Item 6 of IEC 60255-5
 Shock resistance 11MS   200m/S2         ICE 68-2-27 Test Ea
Vibration resistance 10Hz~40Hz double amplitude 1.27mm 40Hz~70Hz 49m/s70Hz~100Hz double amplitude 0.5mm100Hz~500Hz 98m/s IEC 68-2-6 Test Fc
 Terminals strength  10N  ICE 68-2-21 Test Ua1
 Ambient Temperature  -40℃~125℃  
 Relative Humidity  95%(AT20℃)  ICE 68-2-3 Test Ca
 Mass  34g  

Coil Parameter

Coil voltage VDC

Coil resistance Ω±10%

Pickup voltage VDC(max) (75%of rated voltage )

Release voltage VDC(min)

(10% of rated voltage)

Coil power consumption W

Operate Time ms

Release Time ms











1. The use of any coil voltage less than the rated coil voltage will compromise the operation of the relay.
2. Pickup and release voltage are for test purposes only and to eased as design criteria.
YS5128-1C VF28 YS5128-1C

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