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  • Power relays are designed to withstand the current of the electrical circuit into they are inserted and to cut off the electrical circuit under load. Power relays are usually constructed in that the electromagnet with yoke, the contact system, and the arc extinguishing equipment, are built separately, and the relay as a whole is subsequently assembled from such subassemblies. A power relay may include a slide for operating a contact spring. The slide has an end edge lying parallel to the surface of the contact spring that contacts and pushes against the broad side of a contact spring for actuating the middle contact spring. Electromechanical relays comprise one or more electrical contacts having a mechanical movement, these being coupled to a moveable element of the magnetic circuit of an electromagnet. The development and ready availability of various solid state electronic devices has replaced the old reliable electromagnetic relay for controlling the flow of AC power while affording electrical isolation between the switching path and the actuating control elements.
Power relay

Name: JMX Small scale high-power magnetism-keeping Relay

Ordering Information
Power relay
power relay
Contact Contact form 1A 1B
Rated load 60A/250VAC(60F)100A/250VAC(100F)
Operating power(Resistive 15000(60F),2500VA(100F)
Contact resistance(Initial) ≤3mΩ
Material Ag alloy
Electrical life (1S,1S) ≥104 (1800 Ops/h)(60F),5×103 (1800 Ops/h)(100F)
Mechanical life (300/1) ≥105 cycles (18000 Ops/h)
Operate/release voltage 40%~75%Rated voltage
Pulse time >50
Insulation resistance ≥1000MΩ(500VDC)
 Coil power    consumption  DC(W) 1.2
Operate time(Rated voltage) ≤35ms
Release time(Rated voltage) ≤25ms


Dielectric   Strength Between contacts 1500VAC/1min(Leakage current 1 mA)
Between contacts(different pole)
Between contact and coil 3000VAC/1min(Leakage current 1 mA)
Ambient temperature -25~+55℃
Humidity 35%~85%RH
Atmospheric Pressure 86~106KPa
Shock resistance 10G (Half a wave of pulses of sine: 11ms)
Vibrtion resistance 10~50Hz Dual amplitude: 1.5mm
Install model PCB terminal
Weight 35g(60F),45g(100F)



Rated voltage V.DC 6 9 12 24
Coil resistanceΩ(±10%) 30 68 145 480

Power relay


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