Thermal Components

Thermostats – Precision

Bi-metallic, snap-action, SPST thermostats, Hermetic/nonhermetic devices available. Enhanced reliability versions meet stringent requirements of military and aerospace industries for dielectric strength, moisture, resistance, vibration, and shock. Available in low profile, logic level, and automatic reset.

Commercial Thermostats

Series	2455RBV Overmolded Automatic Reset Thermostate	2450R/2450RCH/ 2455R/2455RC/ 2467RC/2467RCH “One-shot” 1/2 in Thermostate	2450R Annualar Ring Cap Automatic Reset Thermostate	2450R/2455R Protected Thermostate	2450R Fully Sealed Thermostate
Reset Type	automatic	none	automatic	automatic	automatic
Amperage	15 A resistive max.	15 A resistive max.	15 A resistive, 12 Vdc	15 A resistive, 12 Vdc	15 A resistive, 12 Vdc
Housing Material	ceramic or phenolic, epoxy overmold	ceramic or phenolic, with or without epoxy-sealed cap and terminal	phenolic, can be partially or totally sealed against water ingress	brass, aluminium, stainless steel and epoxy	phenolic housing, aluminium cap totally encapsulated in water-resistant epoxy
Operating Temperature Range	-12 °C to 105 °C [10 °F to 221 °F]	52 °C to 260 °C (ceramic) [125 °F to 500 °F] 52 °C to 150 °C (phenolic) [125 °F to 302 °F]	-10 °C to 55 °C [14 °F to 131 °F]	15 °C to 130 °C [59 °F to 266 °F]	-10 °C to 55 °C [14 °F to 131 °F]
Environmental Exposure Range	-18 °C to 121 °C [0 °F to 250 °F]	-18 °C to 316 °C (ceramic) [0 °F to 600 °F] -18 °C to 150 °C (phenolic) [0 °F to 302 °F]	-40 °C to 130 °C [-40 °F to 266 °F]	-40 °C to 155 °C [-40 °F to 311 °F]	-40 °C to 130 °C [-40 °F to 266 °F]
Life Cycle Cabability	–	–	300k at 12 Vdc, 10 A	–	300 K at 12 Vdc, 10 A
Low Temperature Differential	–	–	down to 8 °C [46 °F]	–	down to 8 °C [46 °F]

Hermetic Thermostats

Series	3001/3004 Non-Hermetic Thermostate	3100/3106 Hermetic Thermostate	3150/3156 Low Silouhette Hermetic Thermostate	3600/3601 TO-5 Thermal Switches	3000 Custom-packaged Thermostate	3800 Industrial-grade Thermostats for Severe Duty Applications
Amperage	1 A to 3 A (3100, 3100U Series) 2 A to 4 A (3400 series)	0.5 A resistive (3106 Series) 7 A resistive (3100 Series)	0.5 A resistive (3156 Series) 7 A resistive (3150 Series)	1 A resistive	7 A resistive	7 A resistive
Housing Material	phenolic base with metal closure	steel housing with glass-to-metal seal at terminal junktion	steel housing with glass-to-metal seal at terminal junktion	nickel	stainless steel or brass	steel housing with glass-to-metal seal at terminal junktion
Operating Temperature Range	-18 °C to 168 °C [0 °F to 335 °F]	-29 °C to 260 °C [-20 °F to 500 °F] (3100 Series) -29 °C to 204 °C [-20 °F to 400 °F] (3106 Series)	-29 °C to 177 °C [-20 °F to 350 °F]	40 °C to 120 °C [104 °F to 248 °F]	-29 °C to 260 °C [-20 °F to 500 °F]	-29 °C to 260 °C [-20 °F to 500 °F]
Environmental Exposure Range	-18 °C to 177 °C [0 °F to 350 °F]	-62 °C to 288 °C [-80 °F to 550 °F]	-62 °C to 260 °C [-80 °F to 500 °F]	-50 °C to 150 °C [-58 °F to 302 °F]	-62 °C to 288 °C [-80 °F to 550 °F]	-62 °C to 260 °C [-80 °F to 500 °F]
Dielectric Strength	MIL-STD-202, Method 301 1500 Vac 60 Hz terminal to case (2000 Vac 3400)	MIL-STD-202, Method 301 1250 Vac 60 Hz terminal to case (3100, 3100U, 3106 Series) 1500 Vac 60 Hz terminal to case (3100UX Series)	MIL-STD-202, Method 301 750 Vac 60 Hz terminal to case (3150, 3156 Series) 1250 Vac 60 Hz terminal to case (3150U, 3156U Series) 1500 Vac 60 Hz terminal to case (3150UX Series)	500 Vac 60 Hz for one second terminal to case	MIL-STD-202, Method 301 1250 Vac 60 Hz terminal to case	MIL-STD-202, Method 301 1250 Vac 60 Hz terminal to case
Insulation Resistance	MIL-STD-202, Method 302,Cond. B, 500 MΩ, 500 Vdc applied	MIL-STD-202, Method 302, Cond. B 50 MΩ 500 Vdc applied	MIL-STD-202, Method 302,Cond. B, 500 MΩ, 500 Vdc applied	20 mΩ at 500 Vdc	MIL-STD-202, Method 302, 50 MΩ to 500 MΩ	MIL-STD-202, Method 302,Cond. B, 50 MΩ terminal to case
Contact Resistance	MIL-STD-202, Method 307 50 mΩ	MIL-STD-202, Method 307 25 mΩ (3106 Series) 50 mΩ (3100 Series)	MIL-STD-202, Method 307 25 mΩ (3156 Series) 50 mΩ (3150 Series)	60 mΩ	MIL-STD-202, Method 307 50 mΩ max.	MIL-STD-202, Method 307 50 mΩ max.
Hermetic Seal	MIL-STD-202, Method 112,Cond. A, 1×10-5 atm cc/s	MIL-STD-202, Method 112,Cond. A, 1×10-5 atm cc/s	MIL-STD-202, Method 112,Cond. A, 1×10-5 atm cc/s	1×10-3 atm cc/s	MIL-STD-202, Method 112,Cond. A, 1×10-5 atm cc/s	MIL-STD-202, Method 112,Cond. A, 1×10-5 atm cc/s
Moisture Resistance	MIL-STD-202, Method 106	MIL-STD-202, Method 106	MIL-STD-202, Method 106	–	MIL-STD-202, Method 106	MIL-STD-202, Method 106

Precision Thermostats

Series	3450R/3450HR/ 3455R Phenolic Automatic Reset Thermostats	3450RC/3450RCH/ 3455RC Ceramic Automatic Reset Thermostats	3450CM/3455RM Ceramic and Phenolic Manual Reset Thermostats	3455RBV Overmolded Automatic Reset Thermostats	3450R/ 3450RC/ 3450RCH/ 3455R/3455RC “One-shot” 1/2 in Thermostate
Reset Type	automatic	automatic	manual	automatic	none
Amperage	15 A resistive max.	15 A resistive max.	15 A resistive max.	15 A resistive max.	15 A resistive max.
Housing Material	phenolic	ceramic	ceramic or phenolic	ceramic, epoxy overmold	ceramic or phenolic, with or without epoxy-sealed cap and terminals
Operating Temperature Range	0 °C to 150 °C [32 °F to 302 °F]	0 °C to 260 °C [32 °F to 500 °F]	52 °C to 232 °C [125 °F to 450 °F] (ceramic) 52 °C to 150 °C [125 °F to 302 °F] (phenolic)	-12 °C to 105 °C [10 °F to 221 °F] -18 °C to 121 °C [0 °F to 250 °F]	52 °C to 260 °C [125 °F to 500 °F] (ceramic) 52 °C to 150 °C [125 °F to 302 °F] (phenolic)
Environmental Exposure Range	0 °C to 150 °C [32 °F to 302 °F]	-20 °C to 287 °C [0 °F to 550 °F]	10 °C to 260 °C [50 °F to 500 °F] (ceramic) 10 °C to 150 °C [50 °F to 302 °F] (phenolic)	–	-18 °C to 287 °C [0 °F to 550 °F] (ceramic) -18 °C to 150 °C [0 °F to 302 °F] (phenolic)

Thermal Cutoffs

Series	D-Series	RD-Series
Housing	silver-plated brass	ceramic
Operating Temperature	72 °C to 240 °C [162 °F to 464 °F]	72 °C to 240 °C [162 °F to 464 °F]

We are looking forward to a good cooperation with you!

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