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Control Type	Temp. Range °F	Ampacity at Line Voltage				Bulb Dia. in	Bulb Length in	Capillary Length in	Thermostat Part Number	Optional
		Ampacity at Line Voltage								Knob	Bezel	Pilot Lamp
		120V	240V	277V	480V					Knob	Bezel	Pilot Lamp
Single Pole Single Throw (SPST)	20-120	25	25	-	-	.260	4-1/8	24	TST-101-109	TST-104-105	n/a	n/a
	60-250	30	30	305	20	.265	67	12	TST-101-112	TST-104-106	n/a	n/a
	47-107	25	25	25	-	.322	2-3/4	8	TST-101-106	TST-104-102	n/a	n/a
	150-560	30	30	30	20	.326	3-5/8	12	TST-101-113	TST-104-109	n/a	n/a
Double Pole Single Throw (DPST)	30-110	30	30	30	10	.375	6-1/4	36	TST-110-101	TST-104-110	TST-111-101	EHD-109-103
	60-250	30	30	30	10	.380	4	60	TST-110-102	TST-104-103	TST-111-101	EHD-109-103
	100-550	30	30	30	10	.380	4	48	TST-110-103	TST-104-104	TST-111-101	EHD-109-103
Hi-Limit (DPST)	60-250	30	30	30	-	.375	4	48	TST-110-113	TST-104-103	TST-111-102	EHD-109-103
*Note:* Knobs, bezels, pilot lamps and enclosures are optional and they should be ordered separately.



Single-Pole Thermostat	Double-Pole Thermostat Shown with optional Pilot Lamp and Bezel Accessory	Double-Pole Thermostat With Built-in High Limit Reset The high limit is calibrated to track 25°F above the thermostat's setpoint.	NEMA 1 Enclosure For Single-Pole Thermostats Size: 4-1/4"H×3"W×2"D with a 5/8" knockout Part Number: HSGR-1003	NEMA 1 Enclosure For Double-Pole Thermostats Size: 5-3/4"H×3"W×2"D with a 5/8" knockout Part Number: HSGR-1004

Thermowells
Thermowells provide protection for bulb and capillary sensors.
They are supplied with a 1/2 NPT male thread for mounting and a 3/8 NPT internal thread that can be used with the Stuffing Box Assembly to secure the capillary to the well.

Immersed Length		Part Number		Price US Dollars
in	mm	Steel	Stainless Steel	Price US Dollars
12	305	MPT-120-101	MPT-121-101
18	457	MPT-120-102	MPT-121-102
24	610	MPT-120-103	MPT-121-103
36	914	MPT-120-104	MPT-121-104

Stuffing Box Assembly
The Stuffing Box Assembly is used to seal the thermostat capillary when the sensing bulb is immersed directly in a liquid rather than in a thermowell. The Stuffing Box consists of six slotted washers used to compress a graphite packing into a 3/8" NPT male pipe thread fitting.
Assembly Instructions
Feed Sensing Bulb through hole in upper and lower fitting. Insert Washers and packing into top cavity of lower fitting. Upper fitting then screws into lower fitting creating the seal.
Part Number: TST-109-101

How To Order

Stock Thermostats and Accessories

Choose the Part Number of the item that best suits the needs of your application.

Please contact Tempco for further assistance.

Toll Free (888) 268-6396

*Thermostat Description and Selection*
This type of control operates by expansion and contraction of a liquid in response to temperature change. Liquid contained within the sensing bulb and capillary flexes a diaphragm causing the opening and closing of a snap action switch. For heating applications the contacts are normally closed and open on temperature rise.		Do not use the thermostat as a power switch. Use some other means of disconnecting power to the heater for servicing. Thermostats are not a fail safe device. Use an approved high temperature limit control and/or pressure limit control for safe operation.