Introduction to the Haydon HAY-PSU12V1ABB and its key features
Haydon HAY-PSU12V1ABB — 12V DC boxed power supply with integrated battery backupis a compact, metal‑enclosed switch‑mode power supply designed specifically for low‑current security applications. With a universal 90–264 VAC mains input, a nominal 13.8 V DC output on mains and automatic switchover to a connected 12 V lead‑acid standby battery (recommended 7 Ah) when mains fails, this unit provides a reliable and affordable power solution for CCTV cameras, intruder alarms, access control systems and other 12 V security devices.
- Universal 90–264 VAC mains input for global compatibility.
- 13.4–14.2 V DC output on mains (13.8 V nominal) with automatic battery switchover.
- Accepts one 12 V lead‑acid battery (up to 7 Ah) for local backup.
- Compact metal enclosure with tamper contacts, LEDs and fused outputs for increased safety.
- Designed for permanent indoor installation by qualified installers.
Detailed specifications and their practical benefits
The HAY-PSU12V1ABB combines a straightforward spec sheet with practical protections and installer‑friendly features. Below we break down the key specification areas and explain why they matter in day‑to‑day installations.
- Model:HAY-PSU12V1ABB — a dedicated boxed 12 V DC unit built for security installations.
- Product Type:Boxed 12 V DC power supply with battery backup — a single, all‑in‑one enclosure that keeps wiring tidy and secure.
- Enclosure:Metal removable hinged lid — durable, tamper resistant and provides a clean mounting point for a 7 Ah battery.
- Mains Input:90–264 VAC, 50–60 Hz. Benefit: works with a wide range of mains voltages, useful for installers who work across international sites or in facilities with variable supplies.
- Mains Fuse:3.0 A, 250 V. Benefit: protects the unit and installation against upstream faults.
- Output Voltage (mains):13.4–14.2 V DC (13.8 V nominal). Benefit: provides the correct float/charge voltage for most 12 V lead‑acid batteries and keeps CCTV and access control devices within their designed voltage range.
- Output Voltage (battery standby):10.0–12.3 V DC. Benefit: ensures connected devices remain powered during mains failure; voltage will naturally be lower when on battery alone.
- Max Load:1.0 A (12 W). Benefit: sufficient for many low‑current cameras, alarm panels and access control peripherals; keeps the unit compact and economical.
- Ripple:≤150 mV p‑p. Benefit: low ripple helps avoid interference and keeps sensitive electronics stable.
- Battery Type:12 V lead‑acid (sealed preferred). Benefit: common battery format provides predictable backup behaviour and easy sourcing.
- Recommended Battery:1 × 7 Ah. Benefit: fits neatly inside the enclosure and offers a reasonable runtime for low‑current loads.
- Battery Charge Current:Max ≈0.5 A (battery charging fuse 1 A). Benefit: gentle charging extends battery life and keeps heat generation low inside the metal box.
- Battery Space:Accepts up to 7 Ah. Benefit: installers can choose a standard 7 Ah sealed lead‑acid battery for simple in‑box backup.
- Overload Protection:Electronic shut‑down (under mains only). Benefit: protects the PSU and connected devices from sustained overloads.
- Short‑circuit:Electronic protection plus fused outputs. Benefit: rapid fault isolation minimises risk and helps installers diagnose faults quickly.
- Indicators:MAINS (green) and FAULT (red) LEDs. Benefit: instant visual status for commissioning and routine checks.
- Tamper Contacts:Lid & rear N/O volt‑free (closed when lid fitted). Benefit: allows integration with alarm panels to detect enclosure opening—useful for security and maintenance logging.
- Dimensions:200 × 240 × 75 mm. Benefit: compact footprint that fits easily into cupboards, small plant rooms and equipment racks.
- Battery Capacity Fit:1 × 7 Ah. Benefit: tidy single battery solution without bulky external enclosures.
- Operating Temperature:−10°C to +40°C; Storage −20°C to +60°C; Humidity up to 95% RH non‑condensing. Benefit: typical conditions for indoor security installations—avoid outdoor exposure unless in a weatherproof cabinet.
- Directives:Low Voltage, EMC, RoHS, WEEE (see datasheet). Benefit: conforms with common regulatory requirements—install in accordance with local wiring regulations and the manufacturer datasheet.
Use cases and scenarios where the Haydon PSU excels
This PSU is tailored to small‑to‑medium security installations where compactness, a neat in‑box battery and essential protections are more important than high current output. Common scenarios include:
- Single or small CCTV camera deployments:Ideal for analog or low‑power 12 V cameras that draw less than 1 A combined. The in‑box battery provides short‑term backup during mains outages.
- Intruder alarm systems:Many alarm control panels and ancillary devices need a 12 V supply and battery backup; the tamper contacts add an extra layer of security monitoring.
- Access control peripherals:Strikes, maglocks and controllers with low standby current requirements can be powered and kept secure with this PSU (verify load requirements first).
- Small retail or office installations:Neat, contained power with local backup for critical sensors or cameras in small premises.
- Installer or integrator stock item:Affordable, simple to spec for common low‑current security jobs where cost and reliability matter.
Note: it is not intended for high‑draw PoE cameras, motorised PTZ heads or systems with combined loads exceeding 1 A. For higher demands choose a unit with larger continuous current capability or separate battery systems.
Comparisons with similar products on the market
Within the boxed PSU category, several options exist. Here’s how the Haydon HAY-PSU12V1ABB compares to common alternatives:
- Pros of PCB units: lower cost and smaller size. Cons: typically lack metal enclosure, tamper contacts, in‑box battery space and are less suitable for permanent installations.
- Haydon advantage: metal box, tamper contacts and space for a 7 Ah battery make it far more secure and installer friendly for permanent wiring.
- Pros of higher current units: can run more cameras or power-hungry devices and provide longer backup runtimes with larger batteries.
- Haydon advantage: lower cost, smaller footprint and adequate for the many low‑draw use cases; ideal when 1 A is sufficient. However, if your system needs more than 1 A continuous, choose a higher‑rated PSU.
- Pros of multi‑output/rack systems: centralised power distribution and larger battery banks. Cons: higher cost, larger footprint and overkill for small jobs.
- Haydon advantage: simple, localised power with tamper monitoring—better for discrete installations or where a single box at the device location is preferred.
Overall, the HAY-PSU12V1ABB sits in the sweet spot for installers who need a dependable, economical boxed PSU with in‑box battery support and basic security features. It is not intended to replace higher‑capacity power systems where multiple high‑draw devices are present.
Customer testimonials and installer feedback
No official customer testimonials were supplied with the product brief. Below are typical, anonymised points of feedback commonly reported by installers and system integrators for similar boxed PSUs with battery backup—these reflect likely strengths and considerations rather than verbatim customer quotes.
- "Easy to install and tidy—enclosure fits a 7 Ah battery and keeps wiring neat." — installers appreciate the compact metal box and internal battery space.
- "Automatic switchover works reliably in short mains tests." — the automatic backup transition and visual LEDs make commissioning quick.
- "Good value for small jobs." — at a suggested price of £24.99 (cost price £20.32), the unit is perceived as economical for common security tasks.
- "Limited to 1 A—plan accordingly." — some installers note the need to verify total current draw before specifying this unit to avoid overloading.
Installation tips and safety notes
Although straightforward, this product should be installed by a suitably qualified person in line with local wiring regulations and the manufacturer datasheet. Key points:
- Observe polarity and ensure battery terminals are connected correctly.
- Use the recommended 7 Ah sealed lead‑acid battery for neat fit and safe operation.
- Confirm total device current draw does not exceed 1.0 A continuous.
- Keep the enclosure in a ventilated indoor location within the stated temperature and humidity limits.
- Dispose of batteries and the unit according to WEEE and local hazardous waste guidance.
Conclusion: why the Haydon HAY-PSU12V1ABB is a great choice
The Haydon HAY-PSU12V1ABB is an economical, compact and practical boxed 12 V DC power supply with built‑in battery backup aimed squarely at the needs of CCTV, alarm and access control installations. Its universal mains input, in‑box capacity for a 7 Ah battery, tamper contacts and clear status LEDs deliver the essentials that installers expect for small‑scale security projects. While the 1 A maximum output limits use to low‑current devices, the unit's affordable price point and metal enclosure make it an excellent choice when a neat, secure and reliable local power solution is required.
If your installation requires higher continuous current or multi‑device centralised power, consider stepping up to a higher‑rated boxed PSU or a rack‑mount power system. For single cameras, alarm panels and access control peripherals where tidy installation and on‑site backup are priorities, the HAY-PSU12V1ABB offers a balanced mix of functionality, safety features and value.
