K7SR Series Safety Relay

Key Features

  • Various contact configurations
  • Forcibly guided contact type (IEC 61810-3)
  • 6A switching capacity, Low power consumption
  • Terminal layout for easy wiring of PWB patterns
  • High insulation capacity (UL Insulation Class F)
 
Safety Relay Part Number Contact Form Socket Part Number Number of Terminals
K7SR-3A1B-24VDC 3NO + 1NC K7SC-10FL-24VDC 10FL : 10 Terminal(4P Relay)
K7SR-2A2B-24VDC 2NO + 2NC
K7SR-5A1B-24VDC 5NO + 1NC K7SC-14FL-24VDC 14FL : 14 Terminal (6P Relay)
K7SR-4A2B-24VDC 4NO + 2NC
K7SR-3A3B-24VDC 3NO + 3NC
1. Specifications
Contact Ratings Contact Form 4P 6P
2NO + 2NC, 3NO + 1NC 5NO + 1NC, 4NO + 2NC, 3NO + 3NC
Forcibly Guided Contact Type (Based on IEC 61810-3) Type A
Material AgSnO2
Rating 6A 250VAC / 30VDC (1circuit)
Max Switching voltage 400VAC / 30VDC
Max Switching current 6A
Max Switching power 1500VA / 180W
Mechanical Life* 10,000,000
Electrical Life* 100,000 (1NO : 6A 30VDC, resistance load, 1sec ON 1sec OFF)
100,000 (1NO : 6A 250VAC, resistance load, 1sec ON 1sec OFF)
Contact resistance 100mΩ max. (at 1A 6VDC)
Coil Ratings Coil Consumption Approx. 360mW Approx. 500mW
General voltage 24VDC
Min Operating voltage 18.0VDC
Maximum Drop-out Voltage 2.4VDC
Minimum Pick Up Voltage** 31.2VDC 26.4VDC
Coil resistance (Ω) 1600 x (1±10%) 1152 x (1±10%)
Safety Relay General Ratings Insulation Resistance 1000MΩ at 500VDC (It was measured at the same locations as the dielectric strength was measured.)
Grade of insulation Class F
Withstand voltage*** Between Coil & Contacts : 4000VAC 1 min
Between Open Contacts : 1500VAC 1 min
Between Contact sets : 2500VAC 1 min (34-33/44-43) 4000VAC 1 min (Other) Between Contact sets : 2500VAC 1 min (54-53/64-63) 4000VAC 1 min (Other)
Surge voltage Between Coil & Contacts : 10kV (1.2 / 50μs)
Between Contact sets : 5kV (1.2 / 50μs)
Operating time (at rated voltage) 20ms max. (The ambient temperature was 23 ° C. Contact bounce time is not included.)
Breaking time (at rated voltage) 20ms max. (The ambient temperature was 23 ° C. Contact bounce time is not included.)
Vibration resistance NO/NC : 10Hz to 55Hz 1.5mm DA NO : 55Hz to 200Hz, 98m/s² NC : 55Hz to 200Hz, 49m/s²
Shock Resistant Malfunction : 980m/s² Destruction : 100m/s²
Ambient temperature**** -40° C to 85° C
Ambient Humidity 5% to 85% RH
Wiring PCB board / Dedicated socket
Weight Approx. 20g Approx. 23g
Socket General Ratings Rated voltage 250VAC
Rated Current 6A
Applicable relay coil voltage 6 ~ 24 VDC
Ambient temperature -25° C to 55° C
Specification Torque 1.0N . m
Wire thickness 1.5mm 16AWG
Stripping Length 7mm²
Remarks With LED
Caution: The above figures are the initial values. Specifications and materials are subject to change without prior notice for quality improvement. *The Life is for an ambient temperature of 15 to 35°C and an ambient humidity of 25% to 75%. **This is the maximum voltage of the relay coil that can be stably operated. ***When using Socket, the dielectric strength between coil contacts/different poles is 2,500VAC, for 1 min. ****When operating at a temperature between 50 and 70°C, reduce the rated carry current by 0.3A/°C.
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