Thermotech 302-ET-135 Heat Detector
- Thermotech 302-ET-135 Heat Detector
Heat Detector, 135°F
The Thermotech 302-ET-135 is a 135°F all-weather, rate-anticipation heat detector designed for fire detection and alarm systems. Its hermetically sealed construction makes it suitable for moisture-proof or dust-proof applications.
- 135°F temperature rating
- All-weather construction
- Hermetically sealed design
- Rate-anticipation operation
- Self-restoring operation
- Shock and corrosion resistant
- Tamper-resistant construction
- Hexagonal grip bushing
- 1/2-inch conduit threads
- Vertical mounting with horizontal mounting capability
Product Overview
The Thermotech 302-ET-135 is a rate-anticipation heat detector with a 135°F temperature rating. It is designed specifically for fire detection and alarm systems.
The 302-ET model is hermetically sealed for moisture-proof or dust-proof installations. It uses a plastic hexagonal grip bushing with 1/2-inch conduit threads and does not require a special back box.
The detector is designed for indoor and outdoor use. Direct sunlight and adverse conditions should be avoided.
Product Highlights
- 135°F rated heat detector
- All-weather configuration
- Rate-anticipation technology
- Hermetically sealed housing
- Self-restoring operation
- Vertical mounting
- May be mounted horizontally
Technical Specifications
| General | |
|---|---|
| Model | 302-ET-135 |
| Ordering Part Number | 1430477 |
| Product Type | Rate-Anticipation Heat Detector |
| Temperature Rating | 135°F (57.2°C) |
| Construction | Hermetically Sealed |
| Environment | All-Weather |
| Mounting | |
| Primary Mounting | Vertical |
| Horizontal Mounting | Permitted for 302-ET |
| Bushing | Plastic Hexagonal Grip Bushing |
| Conduit Threads | 1/2-inch |
| Back Box | No Special Back Box Required |
| Environmental | |
| Indoor Use | Yes |
| Outdoor Use | Yes |
| Minimum Ambient Air Temperature | -40°F |
| Maximum Ceiling Temperature | 100°F |
| Electrical Ratings | |
| Voltage | 6–125 VDC |
| Current | 5 A |
| Voltage | 6–25 VDC |
| Current | 1 A |
| Voltage | 125 VDC |
| Current | 0.5 A |
| UL Smooth Ceiling Rating | 50 ft × 50 ft |
Always verify the latest manufacturer documentation, approved drawings and applicable fire alarm codes before installation.
Key Features
135°F Rating
Designed to activate at its preset 135°F protection temperature.
Rate Anticipation
Provides rapid response during a fast temperature rise while helping avoid response to minor temperature fluctuations.
Hermetically Sealed
Sealed construction supports moisture-proof and dust-proof applications.
All-Weather
Designed for indoor and outdoor applications when properly protected from sunlight and adverse conditions.
Self-Restoring
The detector automatically resets when the surrounding temperature drops below its protection level.
Flexible Mounting
Vertical mounting is standard and the 302-ET may also be mounted horizontally.
Applications
Fire Alarm Systems
Designed for conventional fire detection and alarm applications.
Outdoor Areas
All-weather construction allows use in suitable outdoor applications.
Moisture-Prone Areas
Hermetically sealed construction supports moisture-proof applications.
Dust-Prone Areas
Sealed construction can be used in suitable dust-prone environments.
Installation must be performed by qualified personnel in accordance with applicable national and local codes. Disconnect the power source before servicing. Protect the detector from direct sunlight and radiating heat sources.
Product Documents
Download the complete documentation for the Thermotech 302-ET-135 Heat Detector.
Product Data Sheet
Technical specifications, ordering information and installation details.
View / Download PDFNeed this for a project?
Send us your BOQ or project requirements and we'll prepare a quote.