Introduction: Haydon HAY-PSU12V2ABB at a glance
Haydon HAY-PSU12V2ABBis a metal‑boxed 12 VDC switch‑mode power supply designed specifically for CCTV, intruder alarm and access‑control installations. What sets this unit apart is its integrated battery backup and charger, compact lockable enclosure, universal mains input and installer‑friendly features such as tamper contacts, status LEDs and protective fusing. With a nominal output of 13.8 VDC and up to 2.0 A continuous current (24 W), it provides a reliable power source for small to medium surveillance and security systems where uninterrupted operation is important.
Key features summary
- 12 VDC output— nominal 13.8 V on mains (13.4–14.2 V range).
- 2.0 A continuous current— supports up to 24 W of load with low ripple (≤150 mV pk‑pk).
- Integrated battery backup— internal charger for a 12 V lead‑acid standby battery (recommended 7 Ah).
- Universal mains input— 90–264 VAC, 50–60 Hz, mains fuse 3.0 A (250 V).
- Metal lockable box— hinged lid with tamper contacts (lid & rear), green MAINS and red FAULT LEDs for quick status checks.
- Safety and protection— overload/short‑circuit protection and shrouded high‑voltage parts to improve installer safety.
Detailed specifications and benefits
This section expands on the technical specifications and what they mean in practice for installers and system owners.
The HAY-PSU12V2ABB accepts a universal mains range of 90–264 VAC at 50–60 Hz, which makes it suitable for installations across different regions without the need for voltage conversion. A 3.0 A, 250 V mains fuse provides primary protection against overcurrent events at the supply side. The wide input range offers resilience against mains fluctuations and simplifies stock‑holding for integrators who service multiple territories.
On mains the unit provides a regulated 13.4–14.2 V DC output (13.8 V nominal). This slightly elevated nominal voltage is typical for CCTV and security supplies because it keeps camera and peripheral voltages within specification even when a battery is being charged or when wiring voltage drop occurs. With up to 2.0 A continuous current (24 W) and low ripple (≤150 mV peak‑to‑peak), the PSU will reliably power most analog and many low‑power IP camera accessories and access‑control devices. An output fuse (1.0 A) protects downstream circuits and makes fault isolation easier for installers.
An internal charger supports a 12 V lead‑acid standby battery (the manufacturer recommends a 7 Ah battery). The unit is designed to maintain a float charge when mains is present and to switch to battery power automatically on mains failure. Battery fusing (1.0 A family specification) and dedicated terminals (B+, B−) make battery connection straightforward. For sites where continuity of operation is important — such as retail stores, small business premises, or sensitive access control points — having an integrated backup removes the need for separate external battery enclosures and simplifies installation.
The metal lockable box (approx. 200 × 240 × 75 mm) is sized to house the PSU and a recommended 7 Ah battery while offering a secure, tamper‑resistant enclosure. Lid and rear tamper contacts are provided and are volt‑free (closed when fixed and lid closed), ideal for integration with alarm panels. The green MAINS and red FAULT LEDs allow quick visual verification of system status. Electronic overload and short‑circuit protection reduce the risk of damage to the PSU and connected equipment. The unit is intended for indoor, permanently wired installations and includes shrouding for high‑voltage components to enhance installer safety.
Designed to operate between −10 °C and +40 °C with storage from −20 °C to +60 °C and up to 95% RH non‑condensing, this PSU is suitable for typical indoor environments. The product meets applicable directives referenced in the manufacturer datasheet (LVD, EMC, WEEE, RoHS); however, installations should follow local wiring regulations and be carried out by a qualified electrician. Always isolate mains before servicing.
Use cases and scenarios where the HAY-PSU12V2ABB excels
The integrated features make this unit well suited to several common security and monitoring scenarios:
- Small CCTV systems— powering up to several analog cameras or a combination of cameras and accessories where total draw remains within 2 A. The backup battery maintains operation during short power interruptions, useful for recording key events.
- Intruder alarm panels— many alarm control panels and peripherals accept 12 VDC; the built‑in battery charging and tamper contacts simplify neat and secure installations.
- Access control points— electric strikes, magnetic locks and readers that draw modest current but require uninterrupted power benefit from the regulated output and battery backup.
- Small retail or office sites— where a compact, secure boxed supply is preferred over multiple loose components. The metal enclosure provides a tidy, lockable installation that installers and site managers appreciate.
How it compares with similar products on the market
When evaluating small boxed power supplies with battery backup, there are several dimensions to consider: output current, integration of battery charging, enclosure quality, safety features and price.
Basic 12 V power supplies (wall‑wart or DIN‑rail mounted) may be cheaper but lack integrated battery charging and a secure enclosure. The HAY-PSU12V2ABB provides a compact, all‑in‑one solution that reduces the number of components on site and simplifies wiring and servicing. For systems that must remain operational when mains fails, the Haydon unit is a clear advantage.
Some installers prefer separate PSUs and battery boxes to size batteries independently. While this approach offers flexibility for larger battery capacities, it increases installation complexity and the physical footprint. The Haydon boxed PSU is optimized for small installations where a recommended 7 Ah battery is sufficient; it offers a neat, preconfigured solution that lowers installation time and reduces cable runs.
There are boxed supplies available with higher current ratings (5 A, 10 A etc.). Those products suit larger camera arrays or higher current access control systems but come at greater cost, size and sometimes complexity. The Haydon HAY-PSU12V2ABB fills the gap for small to medium systems where 2.0 A is adequate—offering a cost‑effective balance between capability and price.
At a suggested retail price of approximately 39.99 (cost price 32.42), the HAY-PSU12V2ABB provides a competitively priced boxed power solution with integrated backup. For projects with modest power demands that require secure mounting and tamper detection, the Haydon offers a stronger feature set than basic supplies and simpler installation than multi-component systems.
Customer feedback and installer observations
Direct published customer testimonials for this specific model may be limited. However, common installer and end‑user observations for products of this class—and from feedback on similar Haydon units—typically include:
- Ease of installation in small retail and office environments thanks to the compact metal enclosure and labelled terminals (V+, V-, B+, B-).
- Appreciation for the integrated charger and tamper contacts which reduce the need for additional components and wiring complexity.
- Positive remarks about the clear MAINS and FAULT LEDs that simplify troubleshooting and status checks on site.
- Requests to carefully size the battery: while a 7 Ah battery is recommended and convenient, some installations needing longer autonomy will require a larger external battery solution.
Because warranty information for this product lists no additional manufacturer warranty beyond statutory rights, installers often recommend confirming terms at point of purchase and ensuring professional installation to avoid avoidable faults.
Conclusion: Why choose the Haydon HAY-PSU12V2ABB?
The Haydon HAY-PSU12V2ABB is a practical, value‑focused solution for anyone specifying power for small CCTV, alarm or access control systems. Its principal strengths are the integration of a regulated 13.8 V nominal output with an internal battery charger, a secure metal lockable enclosure with tamper contacts, and a universal mains input that simplifies deployment across regions. Protection features such as electronic overload/short‑circuit shutdown, fusing and shrouded live parts improve safety for both the system and the installer.
For projects requiring a compact, tidy and reliable 12 VDC supply with battery backup, the HAY-PSU12V2ABB offers a balanced mix of features, safety and affordability. It is especially well suited to small commercial sites, retail outlets, offices and residential security installations where continuity of power and tamper detection are priorities. As always, match battery capacity to required autonomy and engage a qualified electrician for permanent mains wiring and commissioning to get the best performance and compliance from the product.
