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Contact elements for emergency stop buttons

Contact elements for emergency stop buttons

  • Preassembled contact elements
  • Positively driven safety contacts for switching the emergency-stop function
  • Signal contact (N.O. contact) for external diagnosis, e.g. display on the machine control unit
  • Failure protection module checks permanent connection of push button and contact element
  • Illumination module for push buttons, with LED illumination integrated in the snti-obstruction protective collar

Matching contact element for every emergency-stop application: The various functions are combined into the contact elements. The functions can be assigned to the corresponding module which is identifiable by its colour.

Technical drawing

1/10
KE10-01
1/10
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2/10
KE20-01
2/10
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3/10
KE20SF-01
3/10
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4/10
KE20SFB-01
4/10
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5/10: KE contact element with 2 N.C. contacts / 1 N.O. contact
KE21-01
5/10: KE contact element with 2 N.C. contacts / 1 N.O. contact
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6/10: KE contact element with 2 N.C. contacts / 1 N.O. contact / failure protection
KE21SF-01
6/10: KE contact element with 2 N.C. contacts / 1 N.O. contact / failure protection
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7/10: KE contact element with 2 N.C. contacts / 1 N.O. contact / failure protection / illumination
KE21SFB-01
7/10: KE contact element with 2 N.C. contacts / 1 N.O. contact / failure protection / illumination
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8/10: KE contact element with 3 N.C. contacts / failure protection
KE21SF-01
8/10: KE contact element with 3 N.C. contacts / failure protection
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9/10: KE contact element with 3 N.C. contacts / 1 N.O. contact
KE31_KE40-01
9/10: KE contact element with 3 N.C. contacts / 1 N.O. contact
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10/10: KE contact element with 4 N.C. contacts
KE31_KE40-01
10/10: KE contact element with 4 N.C. contacts
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Article characteristics

  • Attribute
  • KE10
  • KE20
  • KE20SF
  • KE20SFB
  • KE21
  • KE21SF
  • KE21SFB
  • KE30SF
  • KE31
  • KE40
  • Attribute
  • Min. switching voltage
  • Min. switching voltage
  • Min. switching current
  • Conv. thermal continuous current Ith
  • Bounce time
  • Utilization category
  • Rated operating current (Ie)
  • Rated operating voltage (Ue)
  • Rated insulation voltage (Ui)
  • Rated voltage Ue
  • Rated current Ie (ohmic load)
  • Rated current Ie (inductive load)
  • Protection class
  • Operating voltage max.
  • Operating voltage max.
  • LED service life
  • Service life, electrical at nominal load (Cycles)
  • Illumination
  • Number of safety contacts (positively opening)
  • Number of signalling contacts (N.O.)
  • Failure protection
  • Actuation path
  • Max. switching current
  • Max. contact resistance
  • Operating voltage min.
  • Operating voltage min.
  • Max. switching voltage
  • Max. switching voltage
AttributeKE10KE20KE20SFKE20SFBKE21KE21SFKE21SFBKE30SFKE31KE40
Bestellung
Bestellung
Min. switching voltage 5 V DC 12 V DC 5 V DC 12 V DC 5 V DC
Min. switching voltage 5 V AC 12 V AC 5 V AC 12 V AC 5 V AC
Min. switching current 0.01 A 0.01 A
Conv. thermal continuous current Ith 16 A 16 A
Bounce time 10 ms 10 ms
Utilization category AC15 A600 / DC13 Q600 AC15 A600 / DC13 Q600
Rated operating current (Ie) 3000 / 1600 ; 120 / 200 / 400 / 2000 mA 3000 / 1600 ; 120 / 200 / 400 / 2000 mA 3000 / 1600 120 / 200 / 400 / 2000 mA 3000 / 1600 ; 120 / 200 / 400 / 2000 mA
Rated operating voltage (Ue) 240 / 440 ; 440 / 250 / 125 / 60 / 24 V 240 / 440 ; 440 / 250 / 125 / 60 / 24 V 240 / 440 440 / 250 / 125 / 60 / 24 V 240 / 440 ; 440 / 250 / 125 / 60 / 24 V
Rated insulation voltage (Ui) 600 V 600 V
Rated voltage Ue 250 VAC / 440 VAC 250 VAC / 440 VAC
Rated current Ie (ohmic load) 16 A / 10 A 16 A / 10 A
Rated current Ie (inductive load) 10 A / 6 A 10 A / 6 A
Protection class II II III II
Operating voltage max. 30 V DC 30 V DC
Operating voltage max. 30 V AC 30 V AC
LED service life 100000 (T=25°C, I=20mA)70000 (T=55°C, I=20mA) h 100000 (T=25°C, I=20mA)70000 (T=55°C, I=20mA) h
Service life, electrical at nominal load (Cycles) 1000000 1000000
Illumination No Yes No Yes No
Number of safety contacts (positively opening) 1 2 2 3 4
Number of signalling contacts (N.O.) 0 1 0 1 0
Failure protection no yes no yes no
Actuation path 6 mm 6 mm
Max. switching current 0.04 A 0.04 A
Max. contact resistance 0.02 Ohm 0.02 Ohm
Operating voltage min. 12 V DC 12 V DC
Operating voltage min. 12 V AC 12 V AC
Max. switching voltage 30 V DC 30 V DC
Max. switching voltage 30 V AC 30 V AC
  • Attribute
  • KE10
  • KE20
  • KE20SF
  • KE20SFB
  • KE21
  • KE21SF
  • KE21SFB
  • KE30SF
  • KE31
  • KE40
  • Attribute
  • Service life, mechanical (Cycles)
  • Dimensions
  • Positive opening path
AttributeKE10KE20KE20SFKE20SFBKE21KE21SFKE21SFBKE30SFKE31KE40
Bestellung
Bestellung
Service life, mechanical (Cycles) 1 x 10^6 1 x 10^6
Dimensions 43,6 x 50,8 x 27,3 mm (H/B/T) 43,6 x 50,8 x 45,4 mm (H/B/T) 43,6 x 50,8 x 27,3 mm (H/B/T) 43,6 x 50,8 x 45,4 mm (H/B/T)
Positive opening path 3 mm 3 mm
  • Attribute
  • KE10
  • KE20
  • KE20SF
  • KE20SFB
  • KE21
  • KE21SF
  • KE21SFB
  • KE30SF
  • KE31
  • KE40
  • Attribute
  • Contact material
AttributeKE10KE20KE20SFKE20SFBKE21KE21SFKE21SFBKE30SFKE31KE40
Bestellung
Bestellung
Contact material AgNi AgNi
  • Attribute
  • KE10
  • KE20
  • KE20SF
  • KE20SFB
  • KE21
  • KE21SF
  • KE21SFB
  • KE30SF
  • KE31
  • KE40
  • Attribute
  • Operating temperature min.
  • Max. operating temperature
  • Min. storage temperature
  • Max. storage temperature
AttributeKE10KE20KE20SFKE20SFBKE21KE21SFKE21SFBKE30SFKE31KE40
Bestellung
Bestellung
Operating temperature min. -30 °C -30 °C
Max. operating temperature 85 °C 65 °C 85 °C 65 °C 85 °C
Min. storage temperature -50 °C -50 °C
Max. storage temperature 85 °C 85 °C
  • Attribute
  • KE10
  • KE20
  • KE20SF
  • KE20SFB
  • KE21
  • KE21SF
  • KE21SFB
  • KE30SF
  • KE31
  • KE40
  • Attribute
  • Mounting type
  • Installation
AttributeKE10KE20KE20SFKE20SFBKE21KE21SFKE21SFBKE30SFKE31KE40
Bestellung
Bestellung
Mounting type inserted/latched inserted/latched
Installation from below from below
  • Attribute
  • KE10
  • KE20
  • KE20SF
  • KE20SFB
  • KE21
  • KE21SF
  • KE21SFB
  • KE30SF
  • KE31
  • KE40
  • Attribute
  • Connection type
  • Screw terminals
  • Max. connection cross section
  • Wire cross section
AttributeKE10KE20KE20SFKE20SFBKE21KE21SFKE21SFBKE30SFKE31KE40
Bestellung
Bestellung
Connection type 10cm Litze und Stecker für Beleuchtung 10cm Litze und Stecker für Beleuchtung
Screw terminals yes yes
Max. connection cross section 2.5 mm² 2.5 mm²
Wire cross section 0.25 mm² 0.25 mm²
  • Attribute
  • KE10
  • KE20
  • KE20SF
  • KE20SFB
  • KE21
  • KE21SF
  • KE21SFB
  • KE30SF
  • KE31
  • KE40
  • Attribute
  • Certified in accordance with
  • CE label
AttributeKE10KE20KE20SFKE20SFBKE21KE21SFKE21SFBKE30SFKE31KE40
Bestellung
Bestellung
Certified in accordance with EN 60947-5-5 EN 60947-5-1 EN ISO 13850 UL 508 / CSA 22.2 EN 60947-5-5 EN 60947-5-1 EN ISO 13850 UL 508 / CSA 22.2
CE label yes yes
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