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 PHSC-190-XCR Linear Heat Detector Cable (500 feet)
Sale price$1,174.20
Regular price$1,409.04
157 units in stock
Protectowire
Protectowire PHSC-190-EPC Linear Heat Detector Cable (500 feet)
Sale price$1,034.45
Regular price$1,241.34
7 units in stock
Protectowire
Protectowire PHSC-155-XCR Linear Heat Detector Cable, 155F Fixed Temperature, XCR Fluoropolymer Jacket (500 feet)
Sale price$1,226.95
Regular price$1,472.34
25 units in stock
Protectowire
Protectowire PHSC-135-XLT Linear Heat Detector Cable (500 feet)
Sale price$979.70
Regular price$1,175.64
Not in stock - available on backorder - lead time on request
Protectowire
Protectowire ZB-4-QC-MP Zone Box, Non-Metallic Moisture Proof Junction Box with Compression Terminals
Sale price$74.70
Regular price$89.64
14 units in stock
Protectowire
Protectowire PHSC-155-EPC Linear Heat Detector Cable, 155F Fixed Temperature, EPC Vinyl Jacket, 500 ft
Sale price$1,007.50
Regular price$1,209.00
Not in stock - available on backorder - lead time on request
Protectowire
Protectowire SR-502-N Non-Metallic
Sale price$19.20
Regular price$23.04
52 units in stock
Protectowire
Protectowire PWSC Splicing Connectors - 10 Units per Pack
Sale price$24.80
Regular price$29.76
3 units in stock
Protectowire
Protectowire PHSC-220-XCR Linear Heat Detector Cable (500 feet)
Sale price$1,094.70
Regular price$1,313.64
Not in stock - available on backorder - lead time on request
Protectowire
Protectowire ELR-HD-U End of Line FiberGlass
Sale price$431.35
Regular price$517.62
Not in stock - available on backorder - lead time on request
Protectowire
Protectowire CTI-155-EPC Linear Heat Detector Cable (500 Feet)
Sale price$1,117.25
Regular price$1,340.70
Sold Out
Protectowire
Protectowire PHSC-280-XCR Linear Heat Detector Cable (500 feet)
Sale price$881.05
Regular price$1,057.26
13 units in stock
Protectowire
Protectowire PHSC-155-EPC-M Linear Heat Detector Cable on Stainless Steel Messenger Wire, 155F, EPC Jacket, 500 ft
Sale price$1,072.30
Regular price$1,286.76
5 units in stock
Protectowire
Protectowire WAW-P Clip Corner Polypropyline
Sale price$0.65
Regular price$0.78
300+ units in stock
Protectowire
Protectowire JD-1 Mounting Clip 304 Stainless Steel
Sale price$2.25
Regular price$2.70
300+ units in stock
Protectowire
Protectowire PHSC-220-EPC Linear Heat Detector Cable (500 feet)
Sale price$1,050.00
Regular price$1,260.00
Not in stock - available on backorder - lead time on request
Protectowire
Protectowire WAW-SS Stainless Steel Cable Clamp
Sale price$4.05
Regular price$4.86
300+ units in stock
Protectowire
Protectowire PM-3A Double Loop Strap
Sale price$1.55
Regular price$1.86
300+ units in stock
Protectowire
Protectowire PHSC-190-EPC-M Linear Heat Detector Cable (500 feet)
Sale price$1,077.45
Regular price$1,292.94
6 units in stock
Protectowire
Protectowire PHSC-155-XCR-M Linear Heat Detector Cable (500 feet)
Sale price$1,142.25
Regular price$1,370.70
Not in stock - available on backorder - lead time on request
Protectowire
Protectowire PM-3B Double Loop Strap
Sale price$2.70
Regular price$3.24
300+ units in stock
Protectowire
Protectowire ELR-4-QC-MP Non-Metallic Moisture
Sale price$43.85
Regular price$52.62
Sold Out
Protectowire
Protectowire ZB-HD-4-QC Fiberglass NEMA-4X (IP66) Junction Box
Sale price$396.95
Regular price$476.34
1 unit in stock
Protectowire
Protectowire OHS-1 Galvanized Steel Clip
Sale price$1.10
Regular price$1.32
175 units in stock