Safe-T-Switch Overflow Shut-Off Switch SS500EP

Safe-T-Switch Model SS 500EP is an overflow shut-off switch designed to fit in the primary drain pan when plenum rating is needed. Its small size and slim profile makes it great for use on commercial rooftop downflow units.

  • Electronic probe sensor
  • 5-wire design
  • Onboard LED indicator
  • Plenum rated wire
  • Connect to either red or yellow wire

Install on primary drain pan when plenum rating is needed, Small size and slim profile great for use on commercial rooftop downflow units
More Information
Case Weight (lbs) : 6.75
Case Height (inch) : 9.88
Case Length (inch) : 12.25
Case Width (inch) : 15.88
Brand : Safe-T-Switch
UPC : 021449976930
Interleaved : 10021449976937
Color : WHITE
Application : Install on primary drain pan when plenum rating is needed, Small size and slim profile great for use on commercial rooftop downflow units
Fin/Blade Spacing : .000
Fin Degree : 0
Screw Holes : 0

Condensate overflow switches and cleanout devices

Rectorseal's Safe-T-Switch is a testament to our dedication to reliability and innovation. The patented offering is designed to ensure peak performance, earning the reputation for effectively managing overflow detection and helping contractors prevent water damage issues. As the first product of its kind, we have continued to refine and perfect the Safe-T-Switch over the years, offering a range of models designed for various applications. Tested to UL 508, this offering includes IMC code 307.2.3.4 & 307.2.5 compliant in-line cleanouts as well as plenum-rated options.



Detects water level via mechanical float, manually adjustable to the preferred sensitivity height inside the switch or pan

Breaks the circuit through the rising of the float

The most cost effective way to protect against condensate water damage


Electronically detects water overflow events through conductivity

Software logic of microcontroller determines when to break the circuit

Compact sensors are as durable and reliable, but are smaller than mechanical switches

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