Description
THORN SECURITY LTD.
850H
HEAT DETECTOR HEAD
516.850.053
EN 54-5 P
EN 54-17:2005
B2713DD3B
0786-CPD-21118
MANUFACTURED IN CZ
The Thorn Security 850H (516.850.053) is a heat detector head for a vessel’s fire alarm system. It responds to heat at its installed position and reports an alarm to the fire detection panel, covering spaces where a heat-based detector is chosen over smoke detection. The head is marked to EN 54-5 P and EN 54-17:2005, carries the references 0786-CPD-21118 and B2713DD3B, and was manufactured in the Czech Republic. It is supplied in Used condition.
Key Features
✓ 850H heat detector head, 516.850.053
✓ EN 54-5 P
✓ EN 54-17:2005
✓ Reference 0786-CPD-21118
✓ Manufactured in CZ
Marine Applications
✓ Galley and pantry heat detection
✓ Laundry and drying rooms
✓ Engine room workshop spaces
✓ Boiler and incinerator flats
Technical Support
Prota Marine provides technical support, repair and onboard installation for the 850H heat detector head and the wider fire alarm system. Our engineers assist with fault diagnosis on detector heads and their bases, and give commissioning support once the head is reinstated on the system.




