Eaton CAP320 Addressable Optical Smoke Sensor | Fastest Smoke Response, 360° LED Visibility
£27.61 (inc VAT: £33.13)
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Key features
- Integral short circuit isolator – no separate isolator base needed
- Auto (soft) addressing for fast loop commissioning
- Drift compensation maintains sensitivity as the chamber collects dust
Downloads
Summary
The Eaton CAP320 is an optical smoke sensor built to give the fastest response to slow burning or smouldering fires, the type that produce large visible smoke particles rather than fast flame. If you’re specifying detection for open-plan offices, corridors or general commercial areas, this is the workhorse sensor you’ll reach for on most jobs.
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For you as the installer, it means less time troubleshooting nuisance alarms and a straightforward add to any Eaton Cooper addressable loop. Auto addressing takes the guesswork out of commissioning, while the integral short circuit isolator protects the rest of the loop without needing a separate isolator base, saving you a component and a bit of labour on every point.
It’s third-party approved to EN54 Part 7 (smoke detectors) and EN54 Part 17 (short circuit isolators), so you can specify it into systems that need to meet BS 5839-1 design requirements with confidence. Drift compensation keeps the sensor performing consistently over its service life, reducing false alarm callbacks that eat into your margin.
Features
- Optical (photoelectric) detection – fastest response to smouldering, slow burning fires with visible smoke particles
- Integral short circuit isolator – protects the loop from a single point of failure without an extra isolator base
- Auto (soft) addressing – no manual dip switches, quicker commissioning on larger loops
- Drift compensation – automatically maintains detection sensitivity as the chamber gathers dust over time
- 360° visibility LED – light pipe technology gives a clear status indication from any viewing angle
- Common mounting base – uses the CAB300 base shared across the CAP320, CAPT340 and CAH330 range, simplifying stock
- EN54 Pt7 and Pt17 approved – third-party certified for use in EN54 compliant addressable systems
- Low standby current – 220μA max standby draw helps with loop power budgeting on larger installations
Specifications
| Description | Optical smoke sensor |
|---|---|
| Standards | EN54 Pt7 2000 + A1:2002, EN54 Pt17 |
| Operating Voltage | 18V dc to 30V dc |
| Standby Current | 220μA (max) |
| Alarm Current | 5mA (max) |
| Addressing Mode | Auto address |
| Mounting Position | Ceiling in open areas |
| Mounting Options | Surface mount with CAB300 base |
| Area Coverage | 100m² (subject to local standard) |
| System Wiring | Min. 1.5mm, 2 core loop or spur |
| Indication | 360° visibility light pipe |
| Operating Temperature | -10°C to +60°C |
| Humidity | 0 to 95% RH (non condensing) |
| Construction | PC/ABS |
| Colour | White – RAL 9003 |
| Dimensions Excluding Base (Dia x D) | 101mm x 33mm |
| Dimensions Including Base (Dia x D) | 104mm x 45mm |
| Weight (Without Base) | 76g |
| IP Rating | IP30 |
| Suitable For Use With | Eaton: Cooper addressable fire systems |
| Catalogue Code | 400002FIRE-0002X |
FAQ
Will the CAP320 work with my existing Eaton Cooper panel?
Yes, the CAP320 is designed for use with Eaton Cooper intelligent addressable fire systems and uses auto addressing, so it will integrate onto a compatible loop without manual address setting. If you’re working on a mixed-vendor system, confirm compatibility with Eaton before ordering.
What base do I need for the CAP320?
It’s a surface mount detector that uses the CAB300 base. The same base is shared across the CAP320, CAPT340 and CAH330 range, which is handy if you’re stocking a mix of sensor types for a job.
Can I fit this into ductwork?
Not directly on its own, but Eaton offers the MDP201 duct probe, which is designed to be used with a detector and base, including the CAP320. Check the duct probe’s own installation guidance for airflow and positioning requirements.
What does the LED tell me on site?
A slow flash roughly every 30 seconds means the detector is in its normal quiescent state with global flash enabled. A fast flash (around 25 times a minute) indicates more than 24 detectors are in a fire state on the system, and a constantly illuminated LED means that individual detector is in alarm. The quiescent flash can be disabled from the control panel menu if required.
What area does one CAP320 cover?
Eaton quotes a nominal 100m² coverage, but this is subject to the local design standard, so you’ll still need to apply BS 5839-1 spacing rules (or the relevant standard for the project) when laying out detector positions rather than relying on the nominal figure alone.
Does the sensor need field calibration during commissioning?
The datasheet doesn’t specify a field calibration procedure, drift compensation is described as an automatic feature that maintains sensitivity over time. For any commissioning steps beyond standard loop addressing and testing, check the full installation manual or confirm with Eaton.
Downloads
- Datasheet (Adobe PDF)
