INCH-1 Safety Interlock Switch, Fibreglass, 2NC

  • RS Stock No. 826-3864
  • Mfr. Part No. 222001
  • Manufacturer IDEM
Technical data sheets
Legislation and Compliance
RoHS Certificate of Compliance
COO (Country of Origin): GB
Product Details

IDEM Kobra INCH Safety Interlock Switches

The Kobra INCH series from IDEM are tongue operated safety interlock switches that fit to the leading edge of sliding, hinged or lift off machine guards. These safety switches have positively operated switching contacts and a strong tamper resistant key mechanism designed to provide robust position interlock detection for moving guards.
Depending upon the risk assessment for the application, the Kobra INCH can be used independently to provide positively operated contacts to EN60947-5-1 or can be used in combination with any dual channel safety monitoring relays to provide up to Category 4 PLe ISO13849-1 or SIL3 EN62061. Two versions are available, the INCH-1 and INCH-3, which offer a choice of contact blocks and various actuators to aid installation and maintain durability.

Actuator profile designed to match a cam mechanism
Contact blocks can be replaced
8 actuator entry positions
Rotatable stainless steel 316 head
Plastic housing
IP67 protection

INCH-1 Safety Switch

2 pole contact blocks 2NC or 1NC / 1NO
1 conduit entry point
M16 or M12 (Quick Connect) 8 way
Miniature housing: 25mm wide, 55mm long, 17mm fixing

INCH-3 Safety Switch

3 pole contact blocks
3 conduit entry points
M16 or M12 (Quick Connect) 8 way
Housing: 25mm wide, 79mm long, 22mm fixing


Not supplied with an actuator. Standard, flat, and flexible actuators are available separately. The plastic flexible actuator is perfect for tight radius guards. A stainless steel guide is also available separately to assist with guard alignment.


EN1088, IEC 60947-5-1, EN60204-1, ISO 13849-1, EN62061, EN954-1, UL508.

Interlock Switch

Attribute Value
Connection Type M16
Lock Style Key
Normal State Configuration 2NC
Housing Material Glass Fibre Polyester
Safety Contacts 2NC
Range Kobra
Number of Head Directions 8
Series INCH-1
Maximum Operating Temperature +85°C
Maximum Current 5 A
IP Rating IP67
Length 79.5mm
Dimensions 79.5 x 25 x 29.5 mm
Minimum Operating Temperature -25°C
Depth 29.5mm
Width 25mm
7 In stock for delivery within 2 working days
Unit of sale: Each
(exc. VAT)
(inc. VAT)
Per unit
1 - 9
10 - 14
15 +
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