Johnson Controls 5951J Addressable Thermal Heat Detector

The Johnson Controls 5951J is a commercial fixed heat detector designed for compatible Johnson Controls fire alarm systems. It provides dependable fixed-temperature thermal detection for commercial, industrial, educational, healthcare, and institutional facilities.

The detector features a low-profile housing, rotary decimal addressing, dual status LEDs, magnetic functional testing, and plug-in installation for simplified maintenance. This product is intended exclusively for commercial fire alarm installations.

Product Functions

• Detects fixed-temperature heat conditions
• Reports alarm conditions to a compatible fire alarm control panel
• Supports automatic device supervision
• Plug-in detector installation
• Magnetic functional testing
• LED status indication
• Commercial fire alarm application

Electrical & System Information

The 5951J connects to compatible Johnson Controls two-wire signaling line circuits and occupies one device address. Rotary decimal switches provide device addressing, while the detector communicates alarm and maintenance status to the connected fire alarm control panel. The detector installs on a compatible plug-in base for simplified service and replacement.

Features

• Fixed-temperature heat detection
• 135°F (57°C) thermal rating
• Low-profile housing
• Rotary decimal addressing
• Dual bi-color LED indicators
• Magnetic functional test
• Plug-in detector head
• Tamper-resistant feature
• Remote LED support
• Commercial fire alarm application

Mounting & Design

The 5951J installs on compatible Johnson Controls detector bases, including the B210LPJ and B501J bases. Optional relay, sounder, isolator, recessed, and surface-mount accessories are available for compatible system configurations.

Protection & Applications

Suitable for:

• Office Buildings
• Schools
• Hospitals
• Hotels
• Warehouses
• Industrial Facilities
• Government Buildings
• Commercial Properties

Compatibility

Compatible with:

• Johnson Controls Fire Alarm Control Panels
• FlashScan® Signaling Line Circuits
• CLIP Signaling Line Circuits
• B210LPJ Detector Base
• B501J Detector Base
• RA400Z Remote LED Annunciator
• Compatible Relay, Isolator, and Sounder Bases

Always verify compatibility with the installed fire alarm control panel and detector base before installation.

Technical Specifications

Manufacturer: Johnson Controls

Model: 5951J

Product Type: Commercial Fixed Heat Detector

Detection Method: Fixed Temperature Thermal Detection

Fixed Temperature Rating: 135°F (57°C)

Operating Temperature: -4°F to 100°F (-20°C to 38°C)

Operating Humidity: 10% to 93% RH Non-Condensing

Addressing: Rotary Decimal Switches

Circuit Type: Two-Wire Signaling Line Circuit

Status Indicator: Dual Bi-Color LEDs

Magnetic Test: Yes

Remote LED Support: Yes (RA400Z)

Mounting: Compatible B210LPJ or B501J Detector Base

Application: Indoor Commercial Fire Alarm Systems

Listings: UL 521, FM Approved, CSFM Listed, MEA Approved (application dependent)

Applications

The Johnson Controls 5951J is designed for commercial fire alarm systems requiring dependable fixed-temperature heat detection. It is commonly installed in offices, schools, hospitals, warehouses, industrial facilities, retail buildings, and other commercial occupancies where thermal detection is required as part of a compatible fire alarm system.

5951J Datasheet