Introduction to the HAY-PSU12V5ABBL and its key features
The HAY-PSU12V5ABBL is a compact boxed power supply designed for professional security and access control installations. Offering a single 12V DC output at 5 A (60 W) with an integrated battery backup function, this unit is aimed at CCTV, intruder alarm and access control systems that require uninterrupted power within a secure enclosure. Key features include a nominal 13.8V DC mains output with automatic battery standby on mains failure, support for either a 7 Ah or 17 Ah sealed lead‑acid battery, universal mains input (90–264 V AC), electronic overload and short‑circuit protection with auto shutdown, and volt‑free tamper contacts for both the lid and rear of the enclosure.
Detailed description of specifications and benefits
The HAY-PSU12V5ABBL combines essential power distribution, battery charging and protection features in a single installer-friendly enclosure. Below is a breakdown of the principal specifications and the practical benefits they deliver.
- Voltage:90–264 V AC. The universal mains input makes the unit suitable for installations worldwide, coping with local mains variations and enabling flexible deployment without needing local transformers or additional power conditioning.
- Frequency:50–60 Hz. Compatible with standard mains frequencies.
- Nominal output:13.8 V DC. The raised output on mains ensures reliable charging of sealed lead‑acid batteries while maintaining correct voltage for connected security devices.
- Mains output range:13.4–14.2 V DC when mains present. This range supports battery maintenance and provides stable supply to cameras and control panels that expect slightly higher-than-nominal voltages for proper charging behaviour.
- Battery standby voltage:10.0–12.3 V DC during battery operation. The unit switches to battery automatically when mains fails, sustaining connected loads within a safe operating window.
- Rated load current:5.0 A (60 W). Sufficient for multiple low-to-medium current cameras, alarm panels and accessories in small to medium installations.
- Ripple:≤150 mV p‑p. Low ripple helps protect sensitive electronics and image sensors, reducing noise that can affect camera performance.
- Protections:Electronic overload and short‑circuit protection with auto shutdown. These protections safeguard both the supply and connected devices from fault conditions and simplify troubleshooting.
- Battery type:12 V sealed lead‑acid (SLA). SLA batteries are cost-effective, widely available and easy to replace.
- Supported capacities:7 Ah or 17 Ah. Choice of battery capacity lets installers balance backup time against space and cost—7 Ah for compact sites and 17 Ah where longer runtime is required.
- Mains LED:Green LED indicates mains present, providing quick visual confirmation of AC supply.
- Fault LED:Red LED indicates output or battery fuse fault, simplifying diagnostics when a system fault occurs.
- Tamper:Volt‑free N/O contacts for lid and rear tamper. These contacts integrate directly with alarm panels to detect unauthorized access to the enclosure.
- Enclosure dimensions:360 × 330 × 90 mm (W × H × D). A compact boxed format that accommodates a single battery while remaining straightforward to mount in cupboards, plant rooms or security cabinets.
- Battery fit:Fits one 7 Ah or one 17 Ah battery depending on runtime requirements.
- Operating temperature:−10°C to +40°C, with storage from −20°C to +60°C and up to 95% relative humidity non‑condensing.
- Installer safety:Fully shrouded high voltage areas reduce the risk of accidental contact during installation and servicing.
- Output terminals:V+, V− (load) provide the main power feed to CCTV cameras, control panels and accessories.
- Battery terminals:B+, B− for secure battery connection.
- Tamper terminals:Two volt‑free tamper contacts (lid & rear) to feed intrusion detection systems or central monitoring equipment.
Safety & compliance:Installations should follow local regulations and the product datasheet for certification and marking (UKCA/CE) details. Observe sealed lead‑acid battery handling and disposal guidelines. The boxed design with voltage shrouding and fault indicators simplifies compliance and safe servicing.
Use cases and scenarios where the product excels
The HAY-PSU12V5ABBL is purpose-built for security and access applications where a reliable 12V supply and battery backup are essential. Typical scenarios include:
- Small to medium CCTV systems:A cluster of dome or bullet cameras and a small NVR can be powered directly from the 5 A output, with the battery providing hours of standby depending on battery size and load.
- Intruder alarm panels:Alarm control panels, PIRs and signaling devices often require continuous 12V power and benefit from the built‑in battery charger and tamper contacts.
- Access control installations:Electric locks, readers and controllers requiring a stable 12V supply and secure enclosure protection.
- Remote sites and temporary installations:Sites where reliable mains are intermittent or where tamper protection is required, such as temporary CCTV on construction sites or remote kiosks.
- Replacement/upgrades:Installations where an old transformer+battery setup is being modernized—this boxed PSU consolidates power, charging and protection into a neat package.
Choosing between the 7 Ah and 17 Ah battery depends on the required runtime. A 7 Ah battery is compact and suitable for short buffer periods or low-load setups; a 17 Ah battery extends backup time significantly for higher duty cycles or longer expected mains outages.
Comparisons with similar products on the market
In the crowded market of CCTV power supplies, several design variations exist: multi-output supplies, DIN‑rail modules, pure power supplies without backup, and networked or monitored units. The HAY-PSU12V5ABBL occupies a practical niche by offering a single-output boxed design with integrated battery backup and tamper detection.
- Vs multi-output PSUs:Multi-output units provide separate fused outputs for multiple devices but are often larger and more complex. The HAY-PSU12V5ABBL’s single 5 A feed is simpler to wire and suits installations where a single fused feed is acceptable.
- Vs DIN-rail power modules:DIN-rail supplies are great for control panels and distribution boards but usually require a separate enclosure for the battery and tamper monitoring. The HAY boxed unit includes the battery space and tamper contacts in one secure package.
- Vs non‑backup supplies:A standard switching PSU without battery backup is less expensive but leaves critical security equipment vulnerable during mains outages. The integrated charging and auto‑failover of the HAY-PSU12V5ABBL provides continuous operation—often a requirement for alarm and CCTV systems.
- Vs networked/monitored PSUs:Some premium units offer remote health monitoring or programmable outputs. The HAY model prioritises robust, simple functionality over advanced telemetry—this reduces cost and complexity while still delivering core reliability. For sites needing remote monitoring, additional supervisory modules can be added if desired.
Tradeoffs to consider: the 5 A rating limits very large camera farms or high-power devices on a single unit. Also, warranty and advanced monitoring options vary by manufacturer—check supplier terms and any optional accessory support when comparing.
Customer testimonials and typical installer feedback
At the time of writing there are no specific public customer testimonials provided with the product metadata. However, typical feedback from installers for products of this type generally highlights the following points:
- "Ease of installation" — compact boxed form factor with clear terminals and shrouded high-voltage areas speeds up site work.
- "Reliable battery switchover" — automatic transition to battery on mains failure is often praised for preventing false alarms and maintaining camera uptime.
- "Useful tamper contacts" — built‑in lid and rear tamper contacts simplify alarm integration without extra hardware.
- "Good value for the feature set" — having battery space, charger and indicators in one unit is appreciated over needing separate components.
When shopping, look for reseller reviews or ask installers who have used the unit in similar environments for real-world confirmation of runtime and installation experience.
Conclusion: why the HAY-PSU12V5ABBL is a great choice
The HAY-PSU12V5ABBL delivers a balanced mix of capability, safety and practicality for security-focused installations. Its single 12V, 5 A output with integrated battery backup addresses the most common needs of CCTV, alarm and access control systems, while the tamper contacts and fault/mains indicators make integration and maintenance straightforward. The universal mains input and compact enclosure make it adaptable across a wide range of sites.
For installers and contractors seeking a reliable boxed power supply that reduces component count and simplifies wiring, this unit is a smart, cost-effective option. Consider the battery capacity that best matches your expected runtime and confirm any warranty or support terms with your supplier. With the right battery and proper installation, the HAY-PSU12V5ABBL will provide dependable, uninterrupted 12V power for many security applications.
