Proximity Switch - Ferrous
High Temp IECEx / ATEX Hazardous Area Proximity Switch - FS-J 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-J Series overview
The FS-J Series Proximity Switch (5/8" UNF Thread) is designed for high-temperature environments of upto +400°F / 204°C and is certified to meet stringent safety and operational standards, such as IECEx and UL certifications, which ensure reliable performance in hazardous environments.
These switches use strong magnetic technology to detect ferrous materials, such as carbon steel or stainless steel (17/4 or 400 series), at distances of up to 2.5mm (0.1"). As standard, they have volt-free SPCO/SPDT (Form C) contacts for dependable signaling.
The FS-J 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 |
In order to maximize installation in compact spaces, the FS-J series features an optional side-exiting lead configuration that reduces switch length. These switches comply with IEC 61508:2010 Routes 1H & 1S with Systematic Capability (SC3) as an element/subsystem. Safety-related systems can use them up to SIL 2 with SIL 2 with HFT=0 (1oo1) and SIL 3 with HFT=1 (1oo2), making them ideal for applications requiring rigorous safety integrity and reliability in high-temperature and hazardous environments.
- 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
- 5/8"-18 UNF (47.60mm / 1.87" 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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