C-TEC C4403B 75C Fixed High Temperature Heat Detector
Overview
The C-TEC C4403B is a high-quality Type B high fixed temperature heat detector designed for conventional fire alarm systems requiring dependable response at elevated temperatures. Manufactured by C-TEC in the UK and third-party certified to EN54-5 by Intertek, it offers reliable heat detection performance at a very competitive price point.
Engineered for professional fire alarm applications, the detector is intended to generate an alarm condition when it detects a temperature between 69°C and 85°C. Its robust design, low current consumption and wide operating voltage range make it suitable for a broad range of monitored two-wire fire alarm installations.
Key Features
- 75°C fixed heat detection: Type B high fixed temperature detector for applications where elevated ambient conditions are expected.
- EN54-5 certified: third-party certified by Intertek for recognised compliance and dependable performance.
- Wide operating voltage: supports 9 to 33V DC system operation for flexible panel compatibility.
- 360° alarm indication: two 8 mm x 2 mm ultra-bright red LED indicating strips provide clear visual indication.
- Low quiescent current: only 30 µA at 24V DC for efficient standby operation.
- Base compatibility: compatible with ActiV C4408D diode, C4408 non-diode and C4408R relay bases.
Product Highlights
The C4403B is designed for environments where a higher fixed response temperature is more suitable than standard heat detection. With a static response temperature of 69°C typical and 85°C maximum, it provides dependable fixed-temperature alarm initiation while helping reduce nuisance operation in warmer areas.
The detector uses a 2-wire monitored, polarity-sensitive supply arrangement and supports remote LED indication via an ActiV base. Its compact white polycarbonate construction, practical installation dimensions and dependable electrical characteristics make it a solid option for professional conventional fire alarm projects.
Technical Specification
| Parameter | Specification |
| Part Number | C4403B |
| Detector Type | Type B High Fixed Temperature Heat Detector |
| Approval Certification | Certified to EN54-5 by Intertek (0359-CPR-00183) |
| Application | Generates an alarm condition when it detects a temperature of between 69°C and 85°C |
| Application Temperature | 40°C typical, 65°C max. |
| Static Response Temperature | 69°C typical, 85°C max. |
| Supply Wiring | 2-wire monitored, polarity sensitive |
| Supply Voltage | 9 - 33V DC |
| Quiescent Current | 30 µA @ 24V DC |
| Alarm Voltage | 6 - 33V DC |
| Alarm Current | 19mA @ 12-33V DC; 11mA @ 9V DC; 2.5mA @ 6V DC |
| Alarm Reset Voltage | Less than 1V DC (+0.5 seconds alarm reset time) |
| Expansion Connections | Remote LED output available via ActiV base. Current source to the negative line, short-circuit protected. Max voltage 2.7V DC |
| IP Rating | IP42 |
| Dimensions | 102.2 mm diameter x 37 mm deep (detector in base); 102.2 mm diameter x 57.5 mm deep |
| Weight | Detector: 99 g. Base: 55 g |
| Construction & Finish | White polycarbonate casing rated to UL94 V-2 with nylon parts |
For project pricing, compatible base options and system integration details, please contact our sales team.
