FEATURES:

• UL & CSA listed
• Encased in epoxy, hence 100% resistant to hostile, humid
  and dusty environments
• Full-Factory calibrated
• Easy to install
• A full 2-year warranty
• The 3-phase monitor model fits all motor size
• No nuisance tripping !
• Visual alarm indicator

SPECIFICATIONS:

• Operating voltage:
  600V, 480V, 240V, 208V
  
  
• Response time:
  2-3 seconds for opening and closing mode
  
  
• Contact rating:
  DSP-1L : (TRIAC) 24 VAC-240VAC, 4A
  DSP-1LS : (Relay Contact) 30 VDC / 120 VAC, 200mA

  
See: Application notes (PDF document) on the use of the 3-Phase Monitor DSP-1L in various industrial environments.