CK Miniature General-purpose Plug-in Relays and Sockets

CKE-2CS Two-changeover Plug-in Relay
CKE-4CS Four-changeover Plug-in Relay
CKL-2CS 10A Two-changeover Plug-in Relay

Description

CK miniature general-purpose relays combine plug-in mounting with mechanical indication and indicator-equipped configurations. CKE-2CS, CKE-4CS and CKL-2CS have separate contact ratings; AC and DC coil codes select the supply independently of the switched circuit. Match the contact form, load type, coil supply and socket before selecting a relay.

Rated Contact Models

ModelChangeover contactsResistive loadMotor loadListed resistive switching powerInitial contact resistanceBetween-pole initial dielectric strength
CKE-2CS2C5A at 250VAC or 30VDC1/6HP at 240VAC1750VA; 210W50mΩ1000VAC for 1 minute; leakage current 1mA
CKE-4CS4C3A at 250VAC or 30VDC750VA; 90W≤100mΩ
CKL-2CS2C10A at 250VAC or 30VDC1/3HP at 240VAC2500VA; 300W1500VAC for 1 minute; leakage current 1mA

Contact current, motor load and listed switching power are separate selection limits. The switching-power figure does not increase the stated contact-current rating.

Operating Characteristics

The following characteristics apply to the three rated models above. Voltage percentages refer to the rated coil voltage, Un.

ParameterValue and condition
Contact materialSilver alloy
Electrical endurance≥100,000 operations; 1s ON and 1s OFF, 1800 operations/h
Mechanical endurance≥10,000,000 operations; 300 operations/min, 18,000 operations/h
Pick-up voltage at 23°CDC ≤75%Un; AC ≤80%Un
Drop-out voltage at 23°CDC ≥10%Un; AC ≥30%Un
Maximum coil voltage at 23°C110%Un
Insulation resistance≥500MΩ at 500VDC
DC coil powerApproximately 0.9W
AC coil powerApproximately 1.2VA
Operate time at rated voltage≤20ms
Release time at rated voltage
Initial dielectric strength between open contacts1000VAC for 1 minute; leakage current 1mA
Initial dielectric strength between contacts and coil1500VAC for 1 minute; leakage current 1mA
Ambient temperature-25–55°C
Ambient humidity35–85%RH
Air pressure86–106kPa
Shock resistance10G; sinusoidal half-wave pulse, 11ms
Vibration resistance10–55Hz; 1.0mm double amplitude
MountingPlug-in

Coil Codes at 23°C

Voltage codeCoil supplyNominal voltageCoil resistanceStandard code
009DC9VDC90ΩNo standard mark
01212VDC180ΩYes
02424VDC640Ω
03636VDC1500ΩNo standard mark
04848VDC2600ΩYes
110110VDC13,000ΩNo standard mark
220220VDC42,000Ω
712AC12VAC40ΩNo standard mark
72424VAC180ΩYes
73636VAC370ΩNo standard mark
74848VAC640ΩYes
710110VAC4430ΩNo standard mark
730230VAC16,500ΩYes
780380VAC42,000ΩNo standard mark

The standard-code column corresponds to the starred coil selections. Other listed codes remain available selections; the star is not part of the ordering code.

Model Fields

FieldCodeMeaning
Resistive current familyE3A or 5A, according to contact configuration
L10A
Contact form2CTwo changeover groups
4CFour changeover groups
MountingSPlug-in
PSoldered
Coil voltageSee coil-code tableSelect the full AC or DC voltage code
Option13Function unspecified

The illustrated 3CS and LT models below have their own outline references. Separate electrical ratings for those variants and the meaning of LT are unspecified here.

CK relay ordering field positions
CK family prefix and five model-field positions: current family, contact form, mounting, coil voltage and option.

Outline Dimensions

Dimensions are in mm. The body envelope is 27max×21max×36max; pin projection is stated separately.

ModelBody envelopePin projectionPin widthPin thickness
CKE-2CS27max×21max×36max6.02.50.5
CKE-3CS
CKE-4CS
CKL-2CS6.84.8
CKE-2CS-LT6.02.5
CKE-3CS-LT
CKE-4CS-LT
CKL-2CS-LT6.84.8
CKE 2CS 3CS and 4CS outline drawings
CKE-2CS, CKE-3CS and CKE-4CS body outlines and terminal dimensions.
CKL 2CS and CKE LT variant outlines
CKL-2CS followed by CKE-2CS-LT, CKE-3CS-LT and CKE-4CS-LT.
CKL 2CS LT outline drawing
CKL-2CS-LT has a 6.8mm terminal projection and 4.8mm pin width.

Wiring and Terminal Layouts

CKE and CKL AC DC wiring and terminal layouts
Separate AC and DC circuits and terminal layouts for CKE-2CS, CKE-4CS and CKL-2CS. Use the drawing for the exact model and supply type.

Relay Sockets and Retaining Clips

Socket modelLoad currentLoad voltageDielectric withstandRetaining accessory
CYF08A-E7A300V2500VAC for 1sCRS-E
CYF08A-KCRS-K
CYF14A-E5ACRS-E
CYF14A-KCRS-K
CTF08A-E10ACRS-E
CTF08A-KCRS-K
CK relay sockets and retaining clips
Six socket structures with their CRS-E or CRS-K retaining accessories; socket load ratings remain separate from relay contact ratings.

Application Conditions

These relays are intended for industrial control. Applications requiring exceptional reliability or safety, including gas and power systems, railways, elevators, medical and security equipment, require a specially designed product and written application approval. The same requirement applies to harsh outdoor, chemically contaminated, electromagnetic, vibration or impact environments; fire or explosion hazards involving flammable gases, strong acids or alkalis; military uses and large engineering projects.

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