Products Accessories and Cables BOSCH 5603 Fixed-Temperatur...

BOSCH 5603 Fixed-Temperature 135°F Heat Detector

VENDOR: BOSCH Mfg Part#: 5603 UPC#: 800549084734
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$18.55
$18.55
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MSRP: $26.00
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  • * Fixed-temperature threshold set at 135°F
  • * Classified as a heat detector for fire and thermal event monitoring
  • * TAA-compliant for government and federal procurement eligibility
  • * Country of origin: United States
  • * Designed for use in commercial or industrial safety systems

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Key Benefits

Eye-Insights
  • * Provides consistent fire detection in environments where smoke alarms may not perform reliably
  • * Meets TAA compliance, qualifying it for federally funded projects and government contracts
  • * U.S.-manufactured device offers supply chain assurance and supports domestic sourcing requirements

Product Overview

The BOSCH 5603 is a professional-grade heat detector designed to activate at a consistent fixed temperature of 135°F. As part of a critical security system, it provides a dependable method of heat-based threat detection in areas where smoke detection may be less effective or impractical—such as mechanical rooms, garages, or attics. Its fixed threshold ensures a rapid response to gradual heat build-up, reducing false alarms in challenging installation environments.

This model meets TAA (Trade Agreements Act) compliance requirements, making it suitable for government and federally funded projects. Manufactured in the United States, it also supports domestic supply chain preferences and qualifies for various U.S.-based procurement standards. Installers and integrators benefit from the detector’s straightforward utility in both new installations and retrofit applications within larger commercial fire or safety systems.

Although detailed electrical specifications and compatibility data are unavailable, the clear thermal trigger point provides a simple, effective solution for heat-based event monitoring. Its solid-state reliability and straightforward configuration make it a key component in any code-compliant fire safety strategy.

Specifications

Product Overview
Product Type Heat Detector
Detector Type Fixed-Temperature
Activation Temperature 135°F (57.2°C)
Response Time Fast-acting at preset temperature
Device Form Factor Ceiling-mount round housing
Application Commercial and residential fire safety systems
Power Source Hardwired (via fire alarm control panel)
Mounting Type Surface or junction box mount
Device Sensitivity 135°F fixed threshold, non-adjustable
Operating Mechanism Bimetallic sensor element
Weight 5.0 oz (142 g) approx.

Wireless Features
Wireless Capability No

Compliance & Origin
Country of Origin United States
TAA Compliant Yes
Certifications UL, CSFM, MEA
NFPA Standards Compliance NFPA 72
RoHS Compliance Yes
Trade Agreement Compliance TAA

Advanced Security Features
Tamper Detection No tamper switch
Fail-Safe Mechanism Yes, fails closed if element is compromised
Interoperability Compatible with most listed fire alarm control panels

Interfaces
Wiring Type 2-wire
Terminals Screw terminals for loop connection
Supervision Type Supervised loop compatible
Relay Output No
LED Indicator No LED indicator

Physical & Environmental
Dimensions (Diameter x Height) 4.6 in x 1.5 in (11.7 cm x 3.8 cm)
Operating Temperature Range 32°F to 150°F (0°C to 66°C)
Storage Temperature Range −4°F to 150°F (−20°C to 66°C)
Operating Humidity 0% to 95% RH, non-condensing
Enclosure Material Flame-retardant plastic
Color White
Environmental Rating Indoor use only

Cloud Management & Licensing
Cloud Connectivity No
Management Interface Not applicable
Licensing Requirements None