1660-13A12 Thermostat

The 1660-13A12 thermostat is an explosion proof and weatherproof temperature control in a lightweight die cast enclosure with a calibrated dial and an external knob adjustment for outdoor or indoor locations. The thermostat is approved for use in Class I, Groups B, C and D; Class II, Groups E, F, and G; and Class III hazardous locations. The liquid-filled thermal system, with its stainless steel bulb and capillary, provides a very dependable and accurate control system.

Enclosure: Die cast aluminum with gray aluminum lacquer. NEMA 4X, 7, 9; weatherproof, explosion proof Class I: Groups B, C, D; Class II: Groups E, F, G; Class III Connection: Screw terminals on switch through 3/4-NPT hub Switch: SPDT UL listed with external knob/dial adjustment and tamperproof adjustment. Rating: 22 amps at 480 VAC. Range: 25° - 325°F (-3° to 163°C) Sensor: 10 ft. 304 SS capillary with 3/8" SS bulb Approval: UL listed. Accuracy: ±1% of adjustment range.   Download PDF Spec Sheet

Wiring

For heater control, low alarm
(close on falling temperature)
use COM and NC. For high
alarm (close on rising
temperature) use COM and NO.