L Series Control

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 L Series LO
  • Auto or manual reset
  • Fail-safe (cut-out to safety) 16(3)A 400V~. For LM8 ratings apply to each pole.
  • Variety of settings and capillary options
  • Narrow profile to fit applications where space is limited
  • Versions available for Class I and Class II appliances
  • Versions for millivolt circuits (L7/LM7 only) available
  • Simple mounting

The L Series, L7, LM7 and LM8, is a family of fixed setting temperature limit controls whose design is failsafe. The L7 is auto reset, whilst LM7 and LM8 are manual reset. The operating temperatures are factory set and non-adjustable by the customer. Settings are available between 50 and 160ºC with capillary lengths from 450 - 2000 mm (1000 mm standard). The L7/LM7 are SPST (single pole single throw) and LM8 is DPST (double pole single throw).

 

Technical

  • 'Boil dry' protection for water heaters, washing machines, dishwashers, vending machines (protection of heating elements)
  • high temperature cut-out on central heating boilers
  • blocked flue sensor on boilers with natural draft (on operation the gas supply to the burner is switched off)
  • protection against overheating in panel/convector heaters
  • overheat safety for AC cassette units equipped with an electric boost heater
  • overheat safety on compressor discharge pipes

 

 

Electrical RatingL7/LM7: 16A 400V~ resistive
3A 400V~ inductive
LM8: ratings apply to each pole
SwitchSPST break on rise of temperature
DPST (LM8) break on rise oftemperature
(note: for millivolt applications L7/LM7 can be supplied with gold plated contacts)
Terminals

Tab 6,3 mm

Terminal Configuration

earth terminals available if required
Download PDF for more information

ApprovalsApproved throughout Europe
Special versions approved for North America
Download PDF for more information
Maximum Head Temperature      At least 15ºC below sensed temperature, max. 90ºC