Protectowire - The Global Leader In Linear Heat Detection Systems
Since 1938, we have manufactured the highest-quality linear heat detectors for the special hazard industry. Protectowire began with the invention of linear heat detection in 1938, marking a pivotal moment in the realm of fire detection technology.
Protectowire pioneered advancements in linear heat detection, setting new standards for reliability and efficiency. The company’s unwavering focus on research and development allowed it to adapt to evolving industry needs, staying ahead of the curve in addressing the unique challenges posed by special hazard environments.
As a result, Protectowire’s linear heat detectors became synonymous with cutting-edge solutions that provided early fire detection, crucial for preventing catastrophic events

Protectowire
Protectowire SG-42SK2 Single Action Pull Station
Sale price$86.90
Regular price$104.28
3 units in stock
Protectowire
Protectowire SR-502 Junction Box Sealed Strain Relief Connector
Sale price$20.70
Regular price$24.84
147 units in stock
Protectowire
Protectowire PHSC-190-XCR-M Linear Heat Detector Cable (500 feet)
Sale price$1,299.90
Regular price$1,559.88
39 units in stock
Protectowire
Protectowire DRTB-T-2 Terminal Block with Integrated Test Jack
Sale price$100.20
Regular price$120.24
30 units in stock
Protectowire
Protectowire ZB-5-QC Non-Metallic Moisture Proof
Sale price$217.55
Regular price$261.06
Not in stock - available on backorder - lead time on request
Protectowire
Protectowire WAW-N Clip, Corner, white Nylon (501359)
Sale price$1.05
Regular price$1.26
30 units in stock
Protectowire
Protectowire ZB-5-QC-NT FiberGlass NEMA-4X (IP66)
Sale price$115.20
Regular price$138.24
19 units in stock
Protectowire
Protectowire PHSC-280-EPC Linear Heat Detector Cable (500 feet)
Sale price$841.50
Regular price$1,009.80
Not in stock - available on backorder - lead time on request
Protectowire
Protectowire CTIC Splicing Terminals
Sale price$32.20
Regular price$38.64
28 units in stock
Protectowire
Protectowire PHSC-356-EPC Linear Heat Detector Cable (500 feet)
Sale price$1,063.65
Regular price$1,276.38
6 units in stock
Protectowire
Protectowire PHSC-135-XLT-M Msg. Wire Linear Heat Detection (500 Feets)
Sale price$1,106.20
Regular price$1,327.44
Not in stock - available on backorder - lead time on request
Protectowire
Protectowire CTI-CAL-KIT Calibration Kit for CTI Linear Heat Detection, Test Probe and Thermocouple Jumper
Sale price$360.95
Regular price$433.14
Not in stock - available on backorder - lead time on request
Protectowire
Protectowire PHSC-356-XCR-M Linear Heat Detector Cable (500 feet)
Sale price$1,051.45
Regular price$1,261.74
3 units in stock
Protectowire
Protectowire PHSC-356-XCR Linear Heat Detector Cable (500 feet)
Sale price$1,028.35
Regular price$1,234.02
33 units in stock
Protectowire
Protectowire PHSC-220-EPC-M Linear Heat Detector Cable (500 feet)
Sale price$999.05
Regular price$1,198.86
Not in stock - available on backorder - lead time on request
Protectowire
Protectowire CTI-155-EPC-M Protectowire, Type CTI on Msg. Wire
Sale price$1,130.75
Regular price$1,356.90
Sold Out
Protectowire
Protectowire PIM-530 Interface Module (PHSC)
Sale price$1,710.40
Regular price$2,052.48
Not in stock - available on backorder - lead time on request
Protectowire
Protectowire SGX-32SK2 Single Action Explosion Proof Pull Station
Sale price$868.70
Regular price$1,042.44
1 unit in stock
Protectowire
Protectowire PM-3C Mounting Strap
Sale price$11.40
Regular price$13.68
300+ units in stock
Protectowire
Protectowire RMC-3 L Bracket
Sale price$13.50
Regular price$16.20
Not in stock - available on backorder - lead time on request
Protectowire
Protectowire ZB-HD-5-QC Fiberglass NEMA-4X (IP66) Junction Box
Sale price$506.55
Regular price$607.86
Not in stock - available on backorder - lead time on request
Protectowire
Protectowire PHSC-356-EPC-M Linear Heat Detector Cable (500 feet)
Sale price$997.95
Regular price$1,197.54
8 units in stock
Protectowire
Protectowire PHSC-280-XCR-M Linear Heat Detector Cable (500 feet)
Sale price$1,141.35
Regular price$1,369.62
9 units in stock
Protectowire
Protectowire CTM-530E Interface Module (CTI)
Sale price$1,463.45
Regular price$1,756.14
Not in stock - available on backorder - lead time on request