Westlock 316SB-STM-020-AAA Datasheet
Westlock leverless limit switches use a hybrid technology to detect the position of a ferrous target via an electro-magnetic field. Westlock use all steel construction, flexible AC/DC, NP/NC, and SPDT/DPDT contact configurations, corrosion resistant, and global certifications for all hazardous areas.
Description
This Proximity Switch has a 316L Stainless Steel Cylindrical housing with SPCO / SPDT (Form C) , volt free Rhodium (Tungsten optional) contacts. It has a maximum switching current of 2.5A.
It requires the use of a magnetic target to operate. This versatile switch provides highly reliable continuous monitoring across a wide operating temperature range.
- Body Shape
- Cylindrical
- Body Material
- 316L Stainless Steel
- Contact Arrangement
- SPCO / SPDT (Form C)
- Contact Material
- Rhodium (Tungsten optional)
- Mounting Thread
- 5/8"-18 UNF (47.75mm / 1.88" long) c/w 2 x locknuts
- Max Current
- 2.5A
- Connection
- PVC Cable
- Conduit Entry
- M20 x 1.5
- Termination
- Cabled with Earth wire
- Certification & Approvals
- IECEx, ATEX, UKEx Ex d/db/tb | UL & CSA (Underwriters Laboratory & Canadian Standards Association)
- Hazardous Location
- Zone 1, 2, 21, 22 | Class I & II Div 1
- Gas Group
- IIC | A - D
- Dust Group
- IIIC | E - G
- Temperature Class (T Rating)
- T4A
- Operating Temperature
- Ex db: -20°C to +70°C / -4°F to +158°F ¦ UL: -40°C to +100°C / -40°F to +212°F
- Sensing Range with Magnet
- Up to the maximum in the magnet table
- Sensing Face Pressure Rating
- 2000psi / 138 bar
- Environmental Protection
- IP 66, 67 & 68 (24hrs at 30m)/ NEMA 4X & 6P
- Safety Rating
- SIL 2 / SC3
