Series ML1S

Barksdale_Temp Switch_ML1S Description
ML1S Series temperature switches are economic, bi-metallic, factory pre-set temperature switches that complement both our new and traditional temperature switch lines. The ML1S features a one-piece, brass thermowell design, which houses a bi-metallic, SPST snap switch. This one piece, brass housing comes standard with 1/2" process and conduit connections is rated NEMA 4 and IP65 and is UL and CSA recognized. Switching action is SPST, wired normally open or closed and rated for 15 amps @ 125 VAC, 10 amps @ 250 VAC. The one-piece design offers integrity against leaks vs. other welded two-piece designs. For low or high limit alarm, shut-off, or control, the ML1S is ideal for OEM applications when a compact, inexpensive temperature switch is required.



  • Bi-metallic sensor
  • Compact design
  • NEMA 4 & IP65
  • One piece design


  • Air compressors
  • Medical compressors
  • Process equipment
  • Water treatment
  • Mining
  • Machine tools and industrial equipment


Accuracy: See table in Barksdale Data Sheet
Switch: SPST-NO or SPST-NC
Wetted Parts: Brass
Electrical Connection: 18", 18 AWG PTFE free leads
Electrical Ratings: 15A @ 125 Vac; 10A @ 250 Vac
Enclosure/Housing NEMA 4, IP65
Process Connection: 1/2" NPT
Conduit Connection: 1/2" NPT
Proof Pressure: 500 psi
Cycle Life: 100,000 cycles
Approvals: CE qualified, UL and CSA
Temperature Range: 50°F - 300°F
Proof Temperature: 340°F
Warranty: 1 year
Weight: 0.15 lb.