A snap-action Belleville
spring assembly is used in most models to provide
vibration resistance and prolonged switch life. The 316 stainless steel
enclosure and hermetically sealed switch provide rugged protection from the
environment. Approved for use in hazardous locations worldwide, the 12 Series
is installed within applications ranging from offshore oil rigs to rotating equipment,
UE Controls 12 Series temperature switches Sensor Type R1-R4
12 Series Electrical Rating
L: 1 amp
H: 5 amp
12 Series Electrical Conduit
N: 1/2” NPT, male
M: M20 metric thread, male
TYPE R1 -Set Point Range: -130 to 120 °F / Max. Temperature: 170 °F/ Stem or Bulb Size: 3/8 O.D. x 4-7 ⁄ 8"
TYPE R2 -Set Point Range: 0 to 150 °F / Max. Temperature: 200 °F/ Stem or Bulb Size: 3/8 O.D. x 7-1 ⁄ 4"
TYPE R3 -Set Point Range: 50 to 300 °F / Max. Temperature: 350 °F/ Stem or Bulb Size: 3/8 O.D. x 4-7/8"
TYPE R4 -Set Point Range: 150 to 650 °F / Max. Temperature: 700 °F/ Stem or Bulb Size: 3/8 O.D. x 4"