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R53 Series Bimetal Cutouts


Cantherm's R53 series equivalent to popular R20 line


Cantherm's R53 bimetal cutout is a direct replacement to its popular and long running R20 series. Much like its predecessor, the R53 series is a versatile and inexpensive solution for thermal control in a wide variety of applications. The CS7 1/2-inch disc thermostat line has been sourced in the USA as a replacement that is electrically equivalent to the R20 line. The R53 is UL, CSA, and VDE approved for 100,000 cycles at full resistive load.

Dimensionally, the CS7 is similar to the R20 except that it is 12mm high while the R20 was 9mm high. Additionally, the aluminum floating mounting flange (bracket) is slightly smaller but has the same bolt pattern as the old model, and the same terminal options are available. Datasheet
CS7 Series

Digi-Key P/N Manufacturer P/N Description Switching Temperature
317-1489-ND CS701515Y THERMOSTAT 15 DEG C NO FASTON 59°F (15°C)
317-1494-ND CS702015Z THERMOSTAT 20 DEG C N/O FASTON 68°F (20°C)
317-1499-ND CS703025Y THERMOSTAT 30 DEG C NC FASTON 86°F (30°C)
317-1504-ND CS703525Z THERMOSTAT 35 DEG C N/C FASTON 95°F (35°C)
317-1509-ND CS704525Y THERMOSTAT 45 DEG C NC FASTON 113°F (45°C)
317-1514-ND CS705025Z THERMOSTAT 50 DEG C N/C FASTON 122°F (50°C)
317-1519-ND CS706525Y THERMOSTAT 65 DEG C NC FASTON 149°F (65°C)
317-1524-ND CS707025Z THERMOSTAT 70 DEG C N/C FASTON 158°F (70°C)
317-1529-ND CS708025Y THERMOSTAT 80 DEG C NC FASTON 176°F (80°C)
317-1534-ND CS709015Z THERMOSTAT 90 DEG C N/O FASTON 194°F (90°C)
317-1539-ND CS710015Y THERMOSTAT 100 DEG C NO FASTON 212°F (100°C)
317-1544-ND CS711025Z THERMOSTAT 110 DEG C N/C FASTON 230°F (110°C)
317-1549-ND CS712525Z THERMOSTAT 125 DEG C N/C FASTON 257°F (125°C)
Complete listing of R53 Series