Introduction to the Haydon HAY-PSU12V3ABBL and its key features
The Haydon HAY-PSU12V3ABBL is a compact boxed 12 V DC power supply with integrated battery backup designed for CCTV and security applications. Offering a single regulated 12 V DC output rated to 3.0 A (36 W) and a universal switch‑mode mains input, this unit suits small to medium surveillance and access-control installations that require uninterrupted power and basic tamper monitoring. Key features include an integrated battery charger for a single 12 V lead‑acid battery (supporting 7 Ah or 17 Ah sizes), lid and rear tamper volt‑free contacts, LED status indicators, and built‑in protections against overloads, short circuits and mains transients.
- Single regulated 12 V DC output:13.8 V nominal (13.4–14.2 V on mains), rated to 3.0 A (36 W).
- Universal mains input:90–264 VAC, 50–60 Hz with transient protection.
- Battery backup:Supports one 12 V lead‑acid battery (1×7 Ah or 1×17 Ah) with integrated charger and a battery charge fuse (3.0 A).
- Safety and signalling:Overload/short‑circuit protection, load output fuse, green mains and red fault LEDs, lid & rear tamper volt‑free contacts.
- Enclosed boxed design:Indoor installation with removable clam lid for battery access.
Detailed specifications and benefits
Understanding the technical specifications helps installers and system designers decide if the HAY-PSU12V3ABBL is the right fit. Below is a breakdown of the main specification categories and the practical benefits they provide.
- Voltage: 90–264 VAC; Frequency: 50–60 Hz.
- Max input current / fuse: 3 A (mains fuse 3.0 A, 250 V).
Benefit: The wide input range makes the unit suitable for international use and resilient to mains fluctuations. Built‑in transient protection helps protect downstream equipment from spikes on the AC supply.
- Nominal output: 13.8 V DC (13.4–14.2 V on mains); Battery standby output: 10.0–12.3 V DC.
- Rated load current: 3.0 A (36 W); Ripple: ≤150 mV p‑p; Load output fuse: 3 A.
Benefit: A regulated 13.8 V nominal output is ideal for most 12 V CCTV cameras and security devices, providing stable voltage under load. Low ripple reduces noise in sensitive camera electronics. The dedicated load fuse and electronic protections increase reliability and safety during fault conditions.
- Battery type supported: 12 V lead‑acid (1×7 Ah or 1×17 Ah); Battery charge fuse: 3.0 A.
Benefit: Integrated charging simplifies installations where uninterrupted operation is critical. Support for both 7 Ah and 17 Ah batteries offers flexibility: 7 Ah for compact installations or short hold‑up times, 17 Ah where longer backup duration is needed. Note: Follow the manufacturer datasheet for charging limits and battery selection guidance.
- LED indicators: Green = mains present; Red = fault.
- Tamper contacts: Lid & rear tamper, N/O volt‑free (closed when secured).
Benefit: Simple, local diagnostic LEDs make commissioning and basic troubleshooting quick. Volt‑free tamper contacts enable connection to alarm panels or security controllers so the PSU enclosure can be monitored for unauthorized access.
- Protections: Overload, electronic short‑circuit shutdown, mains transient protection.
- Box size: 360 × 330 × 90 mm (W×H×D); Removable clam lid for battery fit; Operating temperature −10 °C to +40 °C.
Benefit: The combination of electronic shutdown and fused outputs helps prevent damage to both the PSU and connected devices. The enclosed boxed design keeps wiring neat and secure indoors, and the size accommodates commonly used standby batteries while remaining compact for cabinets or cupboards.
Use cases and scenarios where the product excels
The Haydon HAY-PSU12V3ABBL is tailored to installations that require a straightforward, reliable 12 V supply with battery backup and tamper monitoring. Typical scenarios include:
- Small retail and office CCTV systems:A single 3 A output is sufficient for several analog cameras or a couple of higher-draw cameras depending on their power consumption. The integrated battery keeps critical cameras running during short power outages.
- Standalone intruder alarm panels and sensors:Alarm systems that require a stable 12 V source and local battery charging benefit from the built‑in charger and tamper inputs for enclosure monitoring.
- Access control units:Electromagnetic locks, readers and controllers often require a dedicated 12 V supply and reliable backup; the HAY-PSU12V3ABBL provides a tidy single‑box solution.
- Remote or small branch sites:Where space is limited but uptime is important, the compact boxed design with a single supported battery offers a neat, maintainable power solution.
Note: For large camera arrays, PoE cameras or installations with higher current demands, a multi-output PSU or a higher‑current supply may be more appropriate.
Comparisons with similar products on the market
When comparing the HAY-PSU12V3ABBL to alternatives, consider several axes: output current, battery support, tamper/signalling features, form factor and price. Broadly, the market divides into three categories:
- Small boxed PSUs with battery backup (1–3 A):These are direct competitors. The Haydon unit stands out for its universal input range, clear LED status, tamper contacts and ability to accept a 17 Ah battery despite its modest external dimensions.
- Higher-current or multi-output PSUs (5–20 A):Larger installations typically use these. They offer multiple fused outputs and greater headroom but occupy more space and cost significantly more. The Haydon model is better for compact, simpler systems where only one output is needed.
- Dedicated chargers and separate power supplies:Some installers choose a separate PSU and battery charger to tailor hold‑up times or to support multiple batteries. That approach offers more flexibility but increases wiring complexity and footprint compared with an integrated boxed solution like the HAY-PSU12V3ABBL.
Price-wise, with a suggested price near £53.99 (cost price £44.68 as provided), the Haydon unit is positioned as a cost‑effective, entry to mid‑range boxed PSU with useful features for installers who need a reliable, no‑frills solution.
Customer feedback and reviews
There are no specific customer testimonials provided here. However, typical installer feedback for units of this type highlights a few recurring points: reliability of switch‑mode designs across different mains conditions, convenience of integrated battery charging, usefulness of tamper contacts for alarm integration, and the simplicity of LED status indicators during commissioning. Common cautions include verifying battery type and capacity against the installation's backup duration requirements and ensuring correct fuse sizes and wiring practices are followed as per the manufacturer datasheet.
If you need verified customer reviews, consult reseller pages, trade forums or the manufacturer for case studies and user feedback before purchase.
Conclusion — Why choose the Haydon HAY-PSU12V3ABBL?
The Haydon HAY-PSU12V3ABBL offers a well‑balanced mix of features for small to medium CCTV and security installations: a regulated 13.8 V output at 3.0 A, integrated battery backup for a single 12 V lead‑acid battery, lid and rear tamper contacts for enclosure monitoring, and basic fault indication via LEDs. Its universal mains input and protective circuitry make it suitable for a variety of indoor environments while keeping installation straightforward.
For installers and system integrators seeking a compact, affordable boxed power supply with essential backup and signalling features, the HAY-PSU12V3ABBL is a practical choice. Check the manufacturer datasheet for full installation guidance, battery selection and certification details (CE/UKCA information is not specified here), and ensure the selected battery and fuse configuration meet your required backup time and safety standards.
Summary:A dependable, compact boxed PSU choice for smaller CCTV, alarm and access control systems where an integrated charger, tamper monitoring and a regulated 12 V output are required without the expense or complexity of larger multi‑output supplies.
