Leading Manufacturer of Safety Interlock Switches and Machine Guard Safety Switch Devices for Automation and Process Safety

Explosion Proof Non-Contact Safety Interlock Switch (CM3-Ex)

The CM3-Ex explosion proof safety interlock switch for use in hazardous environments are designed to interlock hinged, sliding or removable guard doors or hatches. All electrical components are fully encapsulated and encased with a stainless back plate to prevent tempering.

  • Housing Material: 316 Grade Stainless Steel, Mirror Polished
  • Contacts: 2NC + 1NO
  • Contact Rating: Up to 250V ac/dc 2.0A Max (Internally Fused)
  • Zones: 1, 21, 2, 22
  • Ex Marking: II 2G Ex mb IIC T6 Gb / II 2D Ex mb IIIC T80 Db IP67*
Part No.Part Description
903101CM3-Ex SS 5M ‘2NC 1NO’ 230Vac/24Vdcr
903102CM3-Ex SS 10M ‘2NC 1NO’ 230Vac/24Vdc
903200CM3-EX – Spare Actuator

Important Note
Installation of all non-contact Ex Safety Switches must be in accordance with your machines risk assessment.

Technical Data
Housing Material 316 Grade Stainless Steel
Recommended setting gap5mm
Tolerance to misalignment5mm in any direction from 5mm setting gap
Switching frequency1.0 Hz Maximum
Temperature rangeSee conditions of use
Enclosure protectionIP67 (Fully encapsulated)
Mechanical reliability (B10d)3.3 million operations at 100mA load
MTTFd470 years (Proof Test Interval 47 years)
Cable typePVC 7 core or 3 core 6.5mm O.D. Max.
Mounting boltsM4 Tightening torque 1.5 Nm

Ex Classification
II 2G Ex mb IIC T6 Gb
II 2D Ex mb IIIC T80C Db