ATEX 440K Safety Interlock Switch, Fibreglass, 2NC

Technical Reference
Legislation and Compliance
RoHS Status: Not Applicable
Product Details

Allen Bradley Guardmaster Safety Interlock Switch

The Allen Bradley Guardmaster 440K series safety interlock switch has 2NC contacts. It has a maximum voltage rating of 240VAC/250VDC. It is an ex range of safety switches, specifically designed for potentially explosive atmospheres. These switches retain the safety features and operating principles of the conventional Guardmaster switches. They incorporate a sealed flameproof contact block, making them suitable for use in European zone 1 and zone 2 environments. In the US and Canada, these products can be used in areas classified as class 1, division 2 in groups A (acetylene), B (hydrogen), C (ethylene), and D (propane).

Features and Benefits

• Operating temperature ranging between -20°C and 80°C
• Positive mode action, flameproof contact block
• Suitable for use in European zone 1 and 2 environments


• IP66 rated
• EN50014
• EN50018

Interlock Switch

Attribute Value
Connection Type M20
Lock Style Key
Normal State Configuration 2NC
Housing Material Glass Filled PBT
Maximum AC Voltage 240V
Maximum DC Voltage 250V
Safety Contacts 2NC
Range Trojan 5-EX
Actuator Included Yes
Number of Head Directions 4
Series 440K
Maximum Operating Temperature +80°C
Hazardous Area Certification ATEX
Width 32mm
Length 95mm
Depth 52mm
Dimensions 95 x 32 x 52 mm
Maximum Current 2 A, 6 A
Minimum Operating Temperature -20°C
IP Rating IP67
8 In stock for delivery within 1 working days
Price Each
kr 2 651,82
(exc. VAT)
kr 3 314,78
(inc. VAT)
Per unit
1 +
kr 2 651,82