77 Series - Overview
Explosion Proof & Intrinsically Safe Proximity/Limit Switches
The 77 Series Proximity Switch (UNF Threads) has extended thread length for use where the 75 Series is not sufficient. Utilising proven magnetic technology enables them to sense ferrous material, such as carbon steel at up to 2.5mm. Available with volt free SPCO/SPDT or DPCO/DPDT contact forms.
The 77 Series is available either hardwired or with one of three wireable options (W, WL, WLR) which utilises our pioneering integrated junction box/connection head design. Wireable proximity switches alleviate add on components and allow installation where space is at a premium.
The 77 Series is covered by the following hazardous area certifications.
Explosion Proof: | Zone 1, IECEx & ATEX Exd (Zone 1 & Zone 21) ¦ UL/CSA (Class I, Div1) | |
Intrinsically Safe: | Zone 0, IECEx & ATEX Exia (Zone 0 & Zone 20) ¦ UL/CSA (Zone 0) | |
Other Regional Approvals Include: |
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Suitable for use in the design of safety functions up to SIL2 or SIL3.
77 Series Datasheets
Follow this link to the full list of 77 Series Datasheets
- Body Shape
- Rectangular
- Body Material
- Stainless Steel
- Contact Arrangement
- SPCO / SPDT (Form C)
- Max Current
- 4A
- Certification
- ATEX Ex d/db/tb, ATEX Ex ia, EAC / TR CU Ex d/db/tb, EAC / TR CU Ex ia, ECAS Ex, IECEx Ex d/db/tb, IECEx Ex ia, INMETRO Ex d/db/tb, INMETRO Ex ia, Kosha Ex d, Kosha Ex ia, NEPSI / CQST, PESO-CCOE Ex d/db/tb, PESO-CCOE Ex ia, UL / CSA Class I/II Div 1 & 2 Groups A-G
- Temperature Class (T Rating)
- T6/T4 (Can also be used in T5, T3)
- Operating Temperature
- -60°C to +204°C
- Safety Rating
- SIL 3
- Actuation
- Ferrous Actuated (Magnet Optional)
- Mounting
- 3/4"-16 UNF x 2.81"(71mm)