SPST-NC Temperature Switches

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44 Products

Fixed-Setpoint Threaded Temperature Switches

Set to actuate at a specific temperature, these switches are easy to setup and prevent changes to the setpoint. They have a threaded probe, so they install directly into tanks, pipelines, and other process components to turn equipment on and off at a set temperature. All switches are NEMA 4 and 13 rated to seal out dirt, oil, and water from washdowns.

Narrow Differential Range Sensitivity—Narrow differential switches reset after a small temperature change in the opposite direction of your switch's actuation. For example, in a rising-actuation switch, they reset after the temperature falls 3° below the setpoint. Use them in systems where temperature changes slowly and where you need precision.

Wide Differential Range Sensitivity—Wide differential switches reset after the temperature significantly decreases (approximately 15%) below the setpoint. Use them in systems that cannot handle frequent power cycling.

Rising Actuation—Rising actuation switches activate when the temperature rises to the setpoint and then reset when the temperature falls below the setpoint. Choose rising actuation SPST-NO switches to power a cooler or trigger an alarm. Choose rising actuation SPST-NC switches to turn off a heater or other equipment when the temperature rises to the setpoint.

Falling Actuation—Falling actuation switches activate when the temperature falls to the setpoint and then reset when the temperature rises above the setpoint. Choose falling actuation SPST-NO switches to power a heater or activate an alarm. Choose falling actuation SPST-NC switches to turn off a cooler or other equipment when the temperature falls to the setpoint.

IP67 Enclosure Rating—IP67 rated switches stand up to temporary submersion.

UL Recognized Component—UL and C-UL listed switches meet U.S. and Canadian safety standards.

								Probe					SPST-NC
	Actuation Point, ° F	Temp. Accuracy	No. of Actuation Points	Actuation Tolerance, ° F	No. of Circuits Controlled	Approx. Difference Between Set Point and Reset Point, ° F	Max. Switching Current @ Voltage (Electrical Phase)	Dia.	Lg.	Max. Pressure, psi	Enclosure Rating	Certification		Each
Threaded Brass Probe—1/2 NPT Male







				Narrow Differential Range Sensitivity—Rising Actuation

				40	±5° F	1	-5 to 5	1	3	6 amp @ 120V AC (Single) 4 amp @ 24V DC (Single)	3/8"	1/2"	5,000	NEMA 4, NEMA 13	UL Recognized Component, C-UL Recognized Component	4692N26	000000


				60	±5° F	1	-5 to 5	1	3	6 amp @ 120V AC (Single) 4 amp @ 24V DC (Single)	3/8"	1/2"	5,000	NEMA 4, NEMA 13	UL Recognized Component, C-UL Recognized Component	4692N27	00000
				80	±5° F	1	-5 to 5	1	3	6 amp @ 120V AC (Single) 4 amp @ 24V DC (Single)	3/8"	1/2"	5,000	NEMA 4, NEMA 13	UL Recognized Component, C-UL Recognized Component	4692N28	00000
				100	±5° F	1	-5 to 5	1	3	6 amp @ 120V AC (Single) 4 amp @ 24V DC (Single)	3/8"	1/2"	5,000	NEMA 4, NEMA 13	UL Recognized Component, C-UL Recognized Component	4692N29	00000
				120	±5° F	1	-5 to 5	1	3	6 amp @ 120V AC (Single) 4 amp @ 24V DC (Single)	3/8"	1/2"	5,000	NEMA 4, NEMA 13	UL Recognized Component, C-UL Recognized Component	4692N31	00000
				140	±5° F	1	-5 to 5	1	3	6 amp @ 120V AC (Single) 4 amp @ 24V DC (Single)	3/8"	1/2"	5,000	NEMA 4, NEMA 13	UL Recognized Component, C-UL Recognized Component	4692N32	00000
				160	±5° F	1	-5 to 5	1	3	6 amp @ 120V AC (Single) 4 amp @ 24V DC (Single)	3/8"	1/2"	5,000	NEMA 4, NEMA 13	UL Recognized Component, C-UL Recognized Component	4692N33	00000
				180	±5° F	1	-5 to 5	1	3	6 amp @ 120V AC (Single) 4 amp @ 24V DC (Single)	3/8"	1/2"	5,000	NEMA 4, NEMA 13	UL Recognized Component, C-UL Recognized Component	4692N34	00000
				200	±5° F	1	-5 to 5	1	3	6 amp @ 120V AC (Single) 4 amp @ 24V DC (Single)	3/8"	1/2"	5,000	NEMA 4, NEMA 13	UL Recognized Component, C-UL Recognized Component	4692N35	00000
				220	±5° F	1	-5 to 5	1	3	6 amp @ 120V AC (Single) 4 amp @ 24V DC (Single)	3/8"	1/2"	5,000	NEMA 4, NEMA 13	UL Recognized Component, C-UL Recognized Component	4692N36	00000
				240	±5° F	1	-5 to 5	1	3	6 amp @ 120V AC (Single) 4 amp @ 24V DC (Single)	3/8"	1/2"	5,000	NEMA 4, NEMA 13	UL Recognized Component, C-UL Recognized Component	4692N37	00000


				260	±5° F	1	-5 to 5	1	3	6 amp @ 120V AC (Single) 4 amp @ 24V DC (Single)	3/8"	1/2"	5,000	NEMA 4, NEMA 13	UL Recognized Component, C-UL Recognized Component	4692N38	00000
				280	±5° F	1	-5 to 5	1	3	6 amp @ 120V AC (Single) 4 amp @ 24V DC (Single)	3/8"	1/2"	5,000	NEMA 4, NEMA 13	UL Recognized Component, C-UL Recognized Component	4692N39	00000
				300	±5° F	1	-5 to 5	1	3	6 amp @ 120V AC (Single) 4 amp @ 24V DC (Single)	3/8"	1/2"	5,000	NEMA 4, NEMA 13	UL Recognized Component, C-UL Recognized Component	4692N41	00000




						Narrow Differential Range Sensitivity—Falling Actuation

						40	±5° F	1	-5 to 5	1	3	6 amp @ 120V AC (Single) 4 amp @ 24V DC (Single)	3/8"	1/2"	5,000	NEMA 4, NEMA 13	UL Recognized Component, C-UL Recognized Component	4692N57	00000


						60	±5° F	1	-5 to 5	1	3	6 amp @ 120V AC (Single) 4 amp @ 24V DC (Single)	3/8"	1/2"	5,000	NEMA 4, NEMA 13	UL Recognized Component, C-UL Recognized Component	4692N58	00000
						80	±5° F	1	-5 to 5	1	3	6 amp @ 120V AC (Single) 4 amp @ 24V DC (Single)	3/8"	1/2"	5,000	NEMA 4, NEMA 13	UL Recognized Component, C-UL Recognized Component	4692N59	00000
						100	±5° F	1	-5 to 5	1	3	6 amp @ 120V AC (Single) 4 amp @ 24V DC (Single)	3/8"	1/2"	5,000	NEMA 4, NEMA 13	UL Recognized Component, C-UL Recognized Component	4692N61	00000
						120	±5° F	1	-5 to 5	1	3	6 amp @ 120V AC (Single) 4 amp @ 24V DC (Single)	3/8"	1/2"	5,000	NEMA 4, NEMA 13	UL Recognized Component, C-UL Recognized Component	4692N62	00000
						140	±5° F	1	-5 to 5	1	3	6 amp @ 120V AC (Single) 4 amp @ 24V DC (Single)	3/8"	1/2"	5,000	NEMA 4, NEMA 13	UL Recognized Component, C-UL Recognized Component	4692N63	00000
						160	±5° F	1	-5 to 5	1	3	6 amp @ 120V AC (Single) 4 amp @ 24V DC (Single)	3/8"	1/2"	5,000	NEMA 4, NEMA 13	UL Recognized Component, C-UL Recognized Component	4692N64	00000
						180	±5° F	1	-5 to 5	1	3	6 amp @ 120V AC (Single) 4 amp @ 24V DC (Single)	3/8"	1/2"	5,000	NEMA 4, NEMA 13	UL Recognized Component, C-UL Recognized Component	4692N65	00000
						200	±5° F	1	-5 to 5	1	3	6 amp @ 120V AC (Single) 4 amp @ 24V DC (Single)	3/8"	1/2"	5,000	NEMA 4, NEMA 13	UL Recognized Component, C-UL Recognized Component	4692N66	00000
						220	±5° F	1	-5 to 5	1	3	6 amp @ 120V AC (Single) 4 amp @ 24V DC (Single)	3/8"	1/2"	5,000	NEMA 4, NEMA 13	UL Recognized Component, C-UL Recognized Component	4692N67	00000
						240	±5° F	1	-5 to 5	1	3	6 amp @ 120V AC (Single) 4 amp @ 24V DC (Single)	3/8"	1/2"	5,000	NEMA 4, NEMA 13	UL Recognized Component, C-UL Recognized Component	4692N68	00000


						260	±5° F	1	-5 to 5	1	3	6 amp @ 120V AC (Single) 4 amp @ 24V DC (Single)	3/8"	1/2"	5,000	NEMA 4, NEMA 13	UL Recognized Component, C-UL Recognized Component	4692N69	00000
						280	±5° F	1	-5 to 5	1	3	6 amp @ 120V AC (Single) 4 amp @ 24V DC (Single)	3/8"	1/2"	5,000	NEMA 4, NEMA 13	UL Recognized Component, C-UL Recognized Component	4692N71	00000
						300	±5° F	1	-5 to 5	1	3	6 amp @ 120V AC (Single) 4 amp @ 24V DC (Single)	3/8"	1/2"	5,000	NEMA 4, NEMA 13	UL Recognized Component, C-UL Recognized Component	4692N72	00000




								Wide Differential Range Sensitivity—Rising Actuation

								50	±7° F	1	-7 to 7	1	8	15 amp @ 125V AC (Single) 10 amp @ 250V AC (Single)	11/16"	1/2"	1,000	IP67, NEMA 4, NEMA 13	—	4692N84	00000


								75	±7° F	1	-7 to 7	1	12	15 amp @ 125V AC (Single) 10 amp @ 250V AC (Single)	11/16"	1/2"	1,000	IP67, NEMA 4, NEMA 13	—	4692N85	00000
								100	±7° F	1	-7 to 7	1	15	15 amp @ 125V AC (Single) 10 amp @ 250V AC (Single)	11/16"	1/2"	1,000	IP67, NEMA 4, NEMA 13	—	4692N86	00000
								125	±7° F	1	-7 to 7	1	19	15 amp @ 125V AC (Single) 10 amp @ 250V AC (Single)	11/16"	1/2"	1,000	IP67, NEMA 4, NEMA 13	—	4692N87	00000
								150	±7° F	1	-7 to 7	1	23	15 amp @ 125V AC (Single) 10 amp @ 250V AC (Single)	11/16"	1/2"	1,000	IP67, NEMA 4, NEMA 13	—	4692N88	00000
175								±7° F	1	-7 to 7	1	27	15 amp @ 125V AC (Single) 10 amp @ 250V AC (Single)	11/16"	1/2"	1,000	IP67, NEMA 4, NEMA 13	—	4692N89	00000
200	±7° F							1	-7 to 7	1	30	15 amp @ 125V AC (Single) 10 amp @ 250V AC (Single)	11/16"	1/2"	1,000	IP67, NEMA 4, NEMA 13	—	4692N91	00000
225	±7° F							1	-7 to 7	1	34	15 amp @ 125V AC (Single) 10 amp @ 250V AC (Single)	11/16"	1/2"	1,000	IP67, NEMA 4, NEMA 13	—	4692N92	00000
250	±7° F							1	-7 to 7	1	38	15 amp @ 125V AC (Single) 10 amp @ 250V AC (Single)	11/16"	1/2"	1,000	IP67, NEMA 4, NEMA 13	—	4692N93	00000
275	±7° F							1	-7 to 7	1	42	15 amp @ 125V AC (Single) 10 amp @ 250V AC (Single)	11/16"	1/2"	1,000	IP67, NEMA 4, NEMA 13	—	4692N94	00000

Compact Threaded Temperature Switches


NPT Male Threaded	NPT Male × NPT Male Threaded

Since these switches don’t have a housing above the probe, they are often used in tight spaces and low-clearance areas. The threaded probe installs directly into tanks, pipelines, and other process components to turn heating equipment on or off at a specified temperature. Use the adjustment screw to set the actuation point. All switches are SPST (single pole, single throw) and control one circuit.

1 On Switch Starting Position—Switches with 1 On Switch Starting Position turn the circuit from on to off.

					Probe				1 On Switch Starting Position
	Pipe Size	Temp. Range, ° F	Actuation Tolerance	Max. Switching Current @ Voltage (Electrical Phase)	Dia.	Lg.	Material	Insulation Material		Each
NPT Male Threaded



		3/8	-100 to 600	-2% to 2%	5 amp @ 120V AC (Single) 3 amp @ 240V AC (Single) 1 amp @ 120V DC (Single)	1/2"	2"	Stainless Steel	Fiberglass	7079K51	0000000


		1/2	-100 to 600	-2% to 2%	10 amp @ 120V AC (Single) 5 amp @ 240V AC (Single) 2 amp @ 120V DC (Single)	5/8"	3"	Stainless Steel	Fiberglass	7079K21	000000


		NPT Male × NPT Male Threaded



				3/8 × 3/8	-100 to 600	-2% to 2%	5 amp @ 120V AC (Single) 3 amp @ 240V AC (Single) 1 amp @ 120V DC (Single)	1/2"	2"	Stainless Steel	Fiberglass	7079K61	000000


				1/2 × 1/2	-100 to 600	-2% to 2%	10 amp @ 120V AC (Single) 5 amp @ 240V AC (Single) 2 amp @ 120V DC (Single)	5/8"	3"	Stainless Steel	Fiberglass	7079K16	000000

Insertion Temperature Switches

Install the probe directly into drilled and reamed holes to turn heating equipment on or off at a specified temperature. Use the adjustment screw to set the actuation point. All switches are SPST (single pole, single throw) and control one circuit.

1 On Switch Starting Position—Switches with 1 On Switch Starting Position turn the circuit from on to off.

Probe							1 On Switch Starting Position
Lg.	Dia.	Material	Temp. Range, ° F	Actuation Tolerance	Max. Switching Current @ Voltage (Electrical Phase)	Insulation Material		Each
2 1/2"	1/2"	Stainless Steel	-100 to 600	-2% to 2%	5 amp @ 120V AC (Single) 3 amp @ 240V AC (Single) 1 amp @ 120V DC (Single)	Fiberglass	7079K23	000000
3 5/8"	5/8"	Stainless Steel	-100 to 600	-2% to 2%	10 amp @ 120V AC (Single) 5 amp @ 240V AC (Single) 2 amp @ 120V DC (Single)	Fiberglass	7079K12	00000