Proximity Switch - Ferrous
ECAS EAC CCC KCS TS Hazardous Area Proximity Switch - FS-M Series
Certifications / Approvals
| Magnet Part No. | MA-1S | MA-2S | MA-3S | MA-4S | MA-7S |
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| Sensing Range in mm (") | |||||
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Documents to view/download
FS-M Series overview
The FS-M Series Proximity Switch (M18 Thread) is specifically designed for IECEx & ATEX Globally Certified, US, Brazil, UAE, Russia, India, China, Korea and Taiwan markets for hazardous environments where safety and accuracy are critical.
These switches utilise advanced magnetic technology to detect ferrous materials such as carbon steel or stainless steel (17/4 or 400 series) at distances up to 2.5mm (0.100"), ensuring reliable operation even in extreme conditions. The inclusion of volt-free SPCO/SPDT (Form C) contacts as standard enhances versatility and safety.
In hazardous environments where space is a concern, the FS-M Series offers a side-exiting lead option to minimise overall switch length, making it ideal for compact installations.
The FS-M Series is covered by the following hazardous area certifications.
| Explosion Proof: | IECEx & ATEX Exd (Zone 1 & Zone 21) |
| Intrinsically Safe: | IECEx & ATEX Exia (Zone 0 & Zone 20) ¦ UL/CSA IS (Zone 0) |
| Other Regional Approvals Include: | EAC/TRCU, INMETRO, KCs, CCOE/PESO, ECAS ex, NEPSI/CQST |
FS-M proximity switches are engineered to comply with IEC 61508:2010 Routes 1H & 1S, achieving Systematic Capability (SC3) as an element/subsystem. These switches are suitable for integration into safety-related systems performing critical safety functions up to SIL 2 with HFT=0 (1oo1) and SIL 3 with HFT=1 (1oo2), ensuring robust performance and compliance in hazardous applications.
- Body Shape
- Cylindrical
- Body Material
- 316L Stainless Steel
- Contact Arrangement
- SPCO / SPDT (Form C)
- Contact Material
- Palladium-Silver
- Max Current
- 4A
- Conduit Entry
- No Conduit Entry
- Temperature Class (T Rating)
- T3 / T4 / T6
- Operating Temperature Range
- -60°C to +204°C / -76°F to +400°F
- Sensing Face Pressure Rating
- 2000psi / 138 bar
- Environmental Protection
- IP 66, 67 & 68 (24hrs at 30m)/ NEMA 4X & 6P
- Safety Rating
- SIL 2 / SC3
- Actuation
- Ferrous Actuated (Magnet Optional)
- Mounting Thread
- M18x1.0 (68.60mm / 2.70" long) c/w 2 x locknuts
- Sensing Range with Magnet
- <12mm (0.47")
- Range (ferrous target)
- 2.5mm|0.10"
- Repeatability
- Approx. 0.05mm (0.002")
- Response Time
- 8 ms
- Differential / Hysteresis
- < 0.51mm (0.020")
All of our products are also available as Ordinary Location / General Industrial.
Please select your certification and protection concept for your specific requirement from the Part Number builder below
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