Junction Boxes and Feed Cable

The Protectowire Linear Heat Detector portion of every initiating circuit shall terminate at each end in an approved zone box, end-of-line zone box, or other approved junction box provided as part of the system. We offer a complete range of end-of-line and zone boxes to accommodate many different types of applications.

ZB-4-QC-MP

Non-metallic, moisture-proof junction box with compression terminals.

  • Dimensions: H 4″ x W 4″ x D 2″
  • Compatible with all controls

Note: Use as end-of-line box for SRP-4×4 to mount 8.2K resistors supplied with panel.

Compatibility
C Compatibile with CTI "Confirmed Temperature Initiation" Linear Heat Detectors
F Compatibile with Fiber Optic Linear Heat Detectors
D Compatibile with PHSC and PLR "Digital Linear Heat Detectors
D
ELR-4-QC-MP (4.7K ELR)

Non-metallic, moisture-proof end-of-line box with compression terminals.

  • Dimensions: H 4″ x W 4″ x D 2″
  • Compatible with FS2000 and 2600HD and ZM-3224 modules
Compatibility
C Compatibile with CTI "Confirmed Temperature Initiation" Linear Heat Detectors
F Compatibile with Fiber Optic Linear Heat Detectors
D Compatibile with PHSC and PLR "Digital Linear Heat Detectors
D
ZB-5-QC

Non-metallic, moisture-proof junction box with the DRTB-T-2 terminal block.

  • Dimensions: H 4″ x W 4″ x D 2″

Note: Also used as an end-of-line box for mounting detection circuit resistors supplied with the interface module.

Compatibility
C Compatibile with CTI "Confirmed Temperature Initiation" Linear Heat Detectors
F Compatibile with Fiber Optic Linear Heat Detectors
D Compatibile with PHSC and PLR "Digital Linear Heat Detectors
C
ZB-HD-4-QC (N4X)

Fiberglass NEMA-4X junction box with compression terminals.

  • Dimensions: H 6″ x W 6″ x D 4″
  • Compatible with all controls
Compatibility
C Compatibile with CTI "Confirmed Temperature Initiation" Linear Heat Detectors
F Compatibile with Fiber Optic Linear Heat Detectors
D Compatibile with PHSC and PLR "Digital Linear Heat Detectors
D
ELR-HD-4-QC (N4X) (4.7k ELR)

Fiberglass NEMA-4X end-of-line box with test switch and compression terminals.

  • Dimensions: H 6″ x W 6″ x D 4″
  • Compatible with FS2000 and 2600HD and ZM-3224 modules
Compatibility
C Compatibile with CTI "Confirmed Temperature Initiation" Linear Heat Detectors
F Compatibile with Fiber Optic Linear Heat Detectors
D Compatibile with PHSC and PLR "Digital Linear Heat Detectors
D
ELR-HD-1A-QC (N4X) (8.2k ELR)

Fiberglass NEMA-4X end-of-line box with test switch and compression terminals.

  • Dimensions: H 6″ x W 6″ x D 4″
  • Compatible with SRP-4×4 and 2600HD and ZM-2 modules
Compatibility
C Compatibile with CTI "Confirmed Temperature Initiation" Linear Heat Detectors
F Compatibile with Fiber Optic Linear Heat Detectors
D Compatibile with PHSC and PLR "Digital Linear Heat Detectors
D
ZB-HD-5-QC

Non-metallic NEMA-4x (IP66) junction box with the DRTB-T-2 terminal block.

  • Dimensions: H 6″ x W 6″ x D 4″

Note: Also used as an end-of-line box for mounting detection circuit resistors supplied with the interface module.

Compatibility
C Compatibile with CTI "Confirmed Temperature Initiation" Linear Heat Detectors
F Compatibile with Fiber Optic Linear Heat Detectors
D Compatibile with PHSC and PLR "Digital Linear Heat Detectors
C
SR-502 Junction Box Sealed Strain Relief Connector

The SR-502 Series Junction Box Sealed Strain Relief Connector is used when the Protectowire Linear Heat Detector enters or exits the junction box.

  • Water and oil resistant
  • Material: Malleable iron/zinc plated, rubber seal and O-ring. 1/2″ NPT Thread
Compatibility
C Compatibile with CTI "Confirmed Temperature Initiation" Linear Heat Detectors
F Compatibile with Fiber Optic Linear Heat Detectors
D Compatibile with PHSC and PLR "Digital Linear Heat Detectors
C F D
SR-502N Junction Box Sealed Strain Relief Connector (Nylon)

The SR-502N is used when any Protectowire Linear Heat Detector penetrates junction and end-line boxes.

  • Water and oil resistant
  • Material: 6/6 nylon and Buna-N Seal 3/8″ NPT thread
Compatibility
C Compatibile with CTI "Confirmed Temperature Initiation" Linear Heat Detectors
F Compatibile with Fiber Optic Linear Heat Detectors
D Compatibile with PHSC and PLR "Digital Linear Heat Detectors
C F D
SR-505 Junction Box Sealed Strain Relief Connector

The SR-505 Series Junction Box Sealed Strain Relief Connector is used when MS-3091T Retractable Cable enters or exits the junction box. The SR-505 is 1/16” (1.59mm) longer than the SR-502.

  • Water and oil resistant
  • Material: Malleable iron/zinc-plated, rubber seal, and O-ring. 1/2″ NPT Thread
Compatibility
C Compatibile with CTI "Confirmed Temperature Initiation" Linear Heat Detectors
F Compatibile with Fiber Optic Linear Heat Detectors
D Compatibile with PHSC and PLR "Digital Linear Heat Detectors
C F D
PWTX

Type TX  thermocouple extension grade feed cable available in 200 ft. (60m) or 500 ft. (152m) spools. For information on thermocouple extension grade feed cable within classified hazards, contact the factory.

  • 20 AWG
  • FEP Teflon Jacket
  • Operating temperature -90F to +400F (-67C to +204C)
  • UL Listed
Compatibility
C Compatibile with CTI "Confirmed Temperature Initiation" Linear Heat Detectors
F Compatibile with Fiber Optic Linear Heat Detectors
D Compatibile with PHSC and PLR "Digital Linear Heat Detectors
C
MS-3091T Retractable Cable

MS-3091T Retractable cable compatible with PHSC and CTI Series Linear Heat Detector.

  • UV, corrosion, and weather-resistant
  • Material: 4 conductor 20 AWG stranded type “TX” thermocouple twisted pairs.
  • Fully extended cable length is 99′ (30m)
  • Used with strain relief connector model SR-505
Compatibility
C Compatibile with CTI "Confirmed Temperature Initiation" Linear Heat Detectors
F Compatibile with Fiber Optic Linear Heat Detectors
D Compatibile with PHSC and PLR "Digital Linear Heat Detectors
C D
SPL- 1L

Spare Installation Spool, 3,280 ft. (1,000 m).

Compatibility
C Compatibile with CTI "Confirmed Temperature Initiation" Linear Heat Detectors
F Compatibile with Fiber Optic Linear Heat Detectors
D Compatibile with PHSC and PLR "Digital Linear Heat Detectors
C D
SPL- 2M

Spare Installation Spool, 1,500 ft. (456 m).

Compatibility
C Compatibile with CTI "Confirmed Temperature Initiation" Linear Heat Detectors
F Compatibile with Fiber Optic Linear Heat Detectors
D Compatibile with PHSC and PLR "Digital Linear Heat Detectors
C D
SPL-1S

Spare Installation Spool, 500 ft. (152 m).

Compatibility
C Compatibile with CTI "Confirmed Temperature Initiation" Linear Heat Detectors
F Compatibile with Fiber Optic Linear Heat Detectors
D Compatibile with PHSC and PLR "Digital Linear Heat Detectors
C D
Applications in Action
Transportation
"Protectowire Linear Heat Detectors provide a rugged and versatile proximity fire detection option for the transportation industry. With a resistance to a variety of automotive fluids, solvents, and environmental elements, as well as a flexible design, Protectowire is an ideal choice for tight spaces and extended runs. The detector is both vibration and abrasion-resistant which allows it to be placed inside engine compartments. A long service life and easy annual testing means there is minimal downtime or disruptions. Our vast experience across a wide range of applications is why Protectowire is the preferred choice for smart transportation companies."
Applications in Action
Mining & Materials Processing
"When it comes to the complexities and hazardous requirements of the mining and material processing industries, few companies can match Protectowire’s knowledge and experience. With our unique product line and decades of successful installations, Protectowire Linear Heat Detection is the smart choice for production intensive operations associated with these industries."
Applications in Action
Warehousing & Cold Storage
"In rack protection and cold storage warehouses with sub-zero storage, temperatures are a few of the challenges found in the warehouse and storage industries. Protectowire Linear Heat Detectors offer innovative specialty products, single-source capabilities, and a total system solution to solve the fire detection challenges associated with this industry."