3NT SERIES FIXED TEMPERATURE THERMOSTATS Introduction Automatic reset thermostat designed to meet your specific application requirements. Its patented and tamper proof snap action bi-metal disc provides reliable and repeatable switch actuation. The 3NT is suitable for electrical loads ranging from dry circuits to 10A 240 VAC. The core of the 3NT is the proven 1NT thermostat. Recognized by UL/CSA and KEMA/ENEC agencies, hundreds of millions of the 1NT device are in the field today used in a variety of HVAC, appliance, automotive and specialty applications. Manufactured at ISO 9001 certified manufacturing sites, its dry seal allows direct integration of the thermostat into a wire harness eliminating the need for extra connections. Features Automatic reset Small and easy to mount Fast thermal response Innovative dry seal design - protects from moisture and dust Reliable 100K cycle life High temperature - to 275F (135C) Applications HVAC Commercial Dehumidifiers Freezers Heat pumps Ice makers Refrigerators Condensing or moist environments SPECIFICATIONS Cycles Amps Agency Volts FLA LRA VA x1000 (resistive) UL 100 120 Vac 5.8 34.8 10 125 (USA, Canada) 100 240 Vac 2.9 17.4 10 125 Electrical Ratings 30 120 Vac 10.0 40.0 30 240 Vac 10.0 40.0 100 30 Vdc 1 ENEC (Europe) 30 240 Vac 16 Operating Temperature -20 to 135C (-4 to 275F) Ambient Temperature -40C to maximum wire lead insulation PVC - 105C XLP - 125C Temperature rating (Allow 15C de-rating below wire insulation rating at maximum 10A current) Minimum Nominal Temperature 8C (15F) Differential 750 Vrms Dielectric Strength 1500 Vrms terminals to case 18 AWG (1/32 or 1/16 wall thickness in either 105C PVC or 125C XLPE) Standard Wire Leads 16 AWG (1/32 wall thickness in 105C PVC) Page 1 www.sensata.com Copyright 2018 Sensata Technologies, Inc. 3NT DRY SEAL DESIGN HOUSING LOCKING CONNECTORS O-RING WIRE LEAD ASSEMBLY 1NT THERMOSTAT 3NT CUP Important Notice: The 3NT is not hermetically sealed, and should not be submerged in liquid. For such applications, please contact Sensata. STANDARD TEMPERATURES AND TOLERANCES Nominal Top Temperature Nominal Differential Open Temperature Close Temperature F C F C F C F C 32 to 80 0 to 27 20 - 29 11 - 16 5.5 3 7.5 4 30 - 38 17 - 21 5.5 3 8.5 4.5 39 - 60 22 - 33 5.5 3 10 5.5 81 to 167 28 to 75 20 - 23 11 -13 5.5 3 7.5 4 24 - 29 14 -16 5.5 3 8.5 4.5 30- 59 17 -33 5.5 3 10 5.5 (1) (1) 168 to 199 76 to 93 20 -23 11 -13 5.5 3 7.5 4 24 - 29 14 -16 5.5 3 8.5 4.5 30 - 59 17 -33 5.5 3 9 5 (1) (1) 200 to 249 94 to 121 20 - 29 11 - 16 6.5 3.5 8.5 4.5 30 - 38 17 - 21 6.5 3.5 10 5.5 39 - 59 22 - 33 6.5 3.5 12 6.5 60 - 99 34 - 55 10 5.5 20 11 250 to 275 122 to 135 24 - 38 14 - 21 7.5 4 10 5.5 39 - 59 22 - 33 7.5 4 14.5 8 60 - 99 34 - 55 10 5.5 20 11 (1) Minimum bottom temperature of 50C (122F) Page 2 www.sensata.com Copyright 2018 Sensata Technologies, Inc.