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2455RA 05380003
Overview
2455A Series Heat Detection Thermostats.
The 2450A Series are designed for use in both photoelectric and ionization type smoke detectors. The gold alloy contacts open or close on a temperature rise of 47 °C to 107 °C [117 °F to 225 °F]. They are epoxy sealed for long life and are available with or without heat collectors.
The 2450A Series are designed for use in both photoelectric and ionization type smoke detectors. The gold alloy contacts open or close on a temperature rise of 47 °C to 107 °C [117 °F to 225 °F]. They are epoxy sealed for long life and are available with or without heat collectors.
Technical Specifications
| Functional Properties | Close on rise |
| Reset Type | Automatic |
| Operating Temperature | 47 °C to 107 °C [117 °F to 225 °F] |
| Amperage | 3.0 A |
| Voltage | 120 Vac |
| Open Temperature | 32.2 °C [90 °F] min. |
| Open Tolerance | N/A |
| Close Temperature | 55.8 °C [132.5 °F] |
| Close Tolerance | 4.2 °C [7.5 °F] |
| Environmental Exposure Range | 0 °C to 150 °C [32 °F to 302 °F] |
| Dielectric Strength | MIL-STD-202, Method 301; 2000 Vac 60 Hz - Terminal to Case |
| Insulation Resistance | MIL-STD-202, Method 302; Cond. B - 500 MOhm - 500 Vdc applied |
| Contact Resistance | MIL-STD-202, Method 307; 0.050 Ohm |
| Housing Material | Phenolic, epoxy seal cap and terminals |
| Contact Material | WE -1 gold alloy cross point |
| Mounting | B247 1.5 in collector |
| Agency Approvals and Standards | UL |
| Comments | Heat detection |
| Series Name | 2455RA |
Technical Specifications
| Functional Properties | Close on rise |
| Reset Type | Automatic |
| Operating Temperature | 47 °C to 107 °C [117 °F to 225 °F] |
| Amperage | 3.0 A |
| Voltage | 120 Vac |
| Open Temperature | 32.2 °C [90 °F] min. |
| Open Tolerance | N/A |
| Close Temperature | 55.8 °C [132.5 °F] |
| Close Tolerance | 4.2 °C [7.5 °F] |
| Environmental Exposure Range | 0 °C to 150 °C [32 °F to 302 °F] |
| Dielectric Strength | MIL-STD-202, Method 301; 2000 Vac 60 Hz - Terminal to Case |
| Insulation Resistance | MIL-STD-202, Method 302; Cond. B - 500 MOhm - 500 Vdc applied |
| Contact Resistance | MIL-STD-202, Method 307; 0.050 Ohm |
| Housing Material | Phenolic, epoxy seal cap and terminals |
| Contact Material | WE -1 gold alloy cross point |
| Mounting | B247 1.5 in collector |
| Agency Approvals and Standards | UL |
| Comments | Heat detection |
| Series Name | 2455RA |
Documents
| TITLE | DOCUMENT TYPE | LANGUAGE | SIZE |
| Commercial Thermostats | Datasheet | English | 756KB |
|---|---|---|---|
| Thermostats Line Guide | Product Line Guide | English | 444KB |
| Thermal Sensors | Product Range Guide | English | 12MB |
Product Features
- Gold alloy contacts
- Epoxy-sealed cap
- Epoxy-sealed terminals
Applications
- Fire alarms
- Smoke detectors
- Security devices