MK3PT relay

MK3PT relay features 10A switching capacity, 3 pole changeover contacts, silver alloy contacts, plug-in mounting design, and optional LED indicator for reliable industrial control applications.

  • Contact form: 3Z,3H,3D
  • Contact load: 10A
  • Maximum switching voltage: 240VAC 10A/28VDC 10A
  • Contact material: Silver alloy
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Description

Product Features:

  1. Small size, light weight, high sensitivity, and long service life
  2. Available for 2- or 3-group (10A) contact switching
  3. Socket mounting
  4. Optional indicator lights and test button

Model Description

MK3PT relay (6)

Contact parameters

Contact form3Z,3H,3D
Contact load10A
Maximum switching voltage240VAC 10A
28VDC 10A
Contact materialSilver alloy

Contact Type Description

EE 30FA 2Z(8)

Transformational:In the middle is the moving contact. When the coil isn’t energized, the moving contact is disconnected from one of the stationary contacts and connected to the other. Once the coil is energized, the moving contact moves, causing the previously disconnected contacts to become connected and the previously connected contacts to become disconnected. This achieves the purpose of switching.

Normally Open Type:The contacts are open when the coil is not energized; the contacts close when energized.

Normally Closed Type:When the coil is not energized, the contacts are closed; when energized, the contacts open.

Operating Coils

Rated voltageDC12VDC24VDC48VDC110V
Rated current (+10%) mA1507516.38.1
Coil resistance (+10%) Ω80320674827160
Rated power consumption W2W
Pull-in voltage (maximum) VBelow 75%
Release voltage (minimum) VMore than 10%
Allowable Voltage (Maximum) VRated voltage x 110%
Rated voltageAC12VAC24VAC48VAC220V
Rated current (+10%) mA225112.524.512.3
Coil resistance (+10%) Ω18.774.715716260
Rated power consumption W3.5 VA
Pull-in voltage (maximum) VBelow 80%
Release voltage (minimum) VMore than 30%
Allowable Voltage (Maximum) VRated voltage x 110%

Product Technical Parameters

Contact resistance≤100mΩ
Electrical life5×10-5times
Mechanical life1×10-6times
Coil voltageDC:6-220V AC:6-380V.
Adsorption time≤20ms;
Release time≤15ms.
Between the same polarity contacts1000VAC/1min(Leakage current 1mA)
Between opposite polarity contacts1500VAC/1min(Leakage current 1mA)
Between contacts and coil2000VAC/1min(Leakage current 1mA)
Insulation resistance≥100MQ(500VDC)
Ambient temperature-25℃~+55℃
Ambient humidity35%~80%RH
Atmospheric pressure86~106KPa
Impact resistance10G(Sine wave half-pulse: 11ms)
Vibration resistance10-55HzDouble amplitude:1.5mm
Size35X35X55mm
WeightApproximately 75g

Product dimensions and installation method

MK3PT relay

Selection Guidelines

Unless otherwise specified, all load currents indicated on the relay housings refer to resistive loads. At the rated switching voltage, the allowable current for inductive loads should not exceed 30% of the rated resistive load current. For motor loads, the allowable current should not exceed 20% of the rated resistive load current. For lighting loads, it should not exceed 10%. For capacitive loads, it should not exceed 5%. To ensure reliable operation of the product, it is recommended that the contact load current not exceed 60%–70% of the steady-state current at the rated load.

Nature of the loadInrush current
Resistive load1 times the steady-state current
Sodium lamp load1-3 times the steady-state current
Mercury lamp load3 times the steady-state current
Inductive load3-5 times the steady-state current
Motor load3-5 times the steady-state current
Transformer load3-5 times the steady-state current
Incandescent lamp load3-5 times the steady-state current
Capacitive load3-5 times the steady-state current

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