Thermotech 302-194 Heat Detector - Rate Compensation, Interior Vertical Surface Mount FM Ul - 194 Degrees
The Thermotech 302-194 is a 194°F rate compensation heat detector for interior, vertical surface mounting with terminal-screw connections. A high-expansion aluminum shell surrounds two struts carrying normally open silver contacts: on a slow temperature rise the contacts close at the rated temperature, and on a rapid rise the shell expands ahead of the struts so the detector operates slightly early, compensating for thermal lag. It resets itself when the air temperature falls back below the rating. Thermotech lists the 194°F rating for locations where the ceiling temperature can reach up to 150°F.
Key Features
- Rate compensation heat detector, normally open contacts
- Self-restoring: resets automatically when the temperature drops below its rating
- Hermetically sealed, shock and corrosion resistant, tamper-proof
- High-expansion aluminum sensing shell with silver contact points
- Interior model with terminal screw connections, vertical mounting
- UL Certified and FM Approved
- Mounts to a 3 in outlet box or 4 in octagon box with the optional AP-P adaptor plate
Specifications
| Temperature rating |
194°F |
| Maximum ceiling temperature |
150°F |
| Minimum ambient temperature |
-40°F |
| Contacts |
Normally open |
| UL certified spacing |
50 ft x 50 ft (smooth ceiling up to 10 ft) |
| FM spacing (194°F) |
30 ft x 30 ft |
| RTI classification (194°F) |
V Fast |
| Electrical rating |
6-125 VAC, 5 A; 6-25 VDC, 1 A; 125 VDC, 0.5 A |
| Warranty |
1 year |
Compatible With
- Fire alarm control panel initiating device circuits (normally open contact device)
- AP-P adaptor plate
