Introduction to the Haydon HAY-DC24V1ABBLPSU and its key features
Haydon HAY-DC24V1ABBLPSU — Boxed 24 V DC PSU with Battery Backup
The Haydon HAY-DC24V1ABBLPSU is a compact, boxed 24 V DC power supply engineered specifically for security and access-control installations. Combining a regulated 24 V DC output with an integrated battery charging and standby capability, this unit provides a reliable primary power source and a ready-to-go backup solution for low-power systems. Key features include a nominal 27.6 V output when mains is present, up to 1.0 A continuous output (24 W), space for two 12 V sealed lead-acid batteries (recommended 2 × 7 Ah), volt-free tamper and mains-fail relay outputs, multiple status LEDs and robust protection mechanisms to keep equipment safe and operational.
Detailed description of specifications and benefits
The HAY-DC24V1ABBLPSU is designed to meet the practical needs of security integrators and system designers. Below is a breakdown of its major specifications and what they mean in real-world deployments.
- Input Voltage:90–264 VAC, 50–60 Hz — a universal mains input that accommodates different regional power systems and reduces SKU complexity for installers.
- Nominal Output:27.6 V DC when mains is present — provides a stable elevated nominal voltage to account for battery charging and voltage drop across wiring, ensuring connected devices receive adequate voltage under load.
- Output Current and Power:Up to 1.0 A continuous (24 W) — suitable for low-power control panels, sensors, or ancillary CCTV devices. The unit includes a model-fitted 1 A load fuse for additional protection.
- Ripple:≤ 150 mV pk–pk — low ripple helps prevent interference and ensures sensitive electronics operate without excess noise.
- Protection:Electronic overload/short-circuit protection with shutdown under mains, plus load fuse — protects both the unit and connected equipment from damage due to faults.
- Battery Type:Supports 2 × 12 V sealed lead-acid batteries, recommended capacity 2 × 7 Ah — provides dependable standby power for planned autonomy times in small systems.
- Charge Current:≈ 0.5 A max — an integral, current-limited charger suitable for maintaining the recommended batteries without over-stressing them.
- Battery Terminals:B+ / B- terminals for secure connections; enclosure sized to accept two 7 Ah batteries (W360 × H330 × D90 mm).
- Tamper Contacts:Volt-free lid and rear tamper outputs that integrate with alarm systems to alert on enclosure access or removal.
- Mains-Fail Relay:Volt-free COM / N.O. / N.C. outputs provide a simple dry contact to signal mains loss to monitoring panels.
- LEDs:Mains, battery (charge/charged/discharge), and fault LEDs give quick visual status for maintenance and troubleshooting.
- Enclosure:Robust clam-lid steel case sized to fit two 7 Ah batteries. The enclosure is practical for wall-mount fixed installations and provides secure battery mounting and cable access.
- Operating Temperature:−10°C to +40°C — suitable for typical indoor equipment rooms or sheltered areas.
- Humidity:Up to 95% RH non‑condensing — tolerant of many real-world indoor environments.
- Installation and Compliance:Designed for fixed installation by qualified personnel. Check the manufacturer datasheet for current approvals such as CE / UKCA and detailed installation instructions.
Use cases and scenarios where the unit excels
The HAY-DC24V1ABBLPSU is optimized for small to medium security applications where compactness, integrated battery backup and simple signalling are valued. Typical uses include:
- Intruder alarm panels:Many alarm control panels and peripheral devices require a stable 24 V supply and a standby battery. This PSU supplies both in a single, mountable enclosure.
- Access control systems:Electric strike releases, readers and control boards often need a continuous DC supply and a battery-backed fail-safe to ensure doors remain controllable during power outages.
- CCTV ancillary devices:Low-power cameras, junction boxes, or network switches can be powered where a central UPS isn’t available. The tamper and mains-fail outputs help integrate these devices into a monitored setup.
- Remote or distributed installations:In installations with distributed controllers (e.g., multiple doors, remote sensor boxes), a small local PSU with a battery avoids long runs from a central power source and provides localized resilience.
- Maintenance and monitoring:The unit’s LEDs and volt-free outputs make it straightforward to integrate with remote monitoring systems or to provide local diagnostic feedback for service technicians.
Comparisons with similar products in the market
There are many boxed power supplies with battery backup available. The Haydon HAY-DC24V1ABBLPSU stands out in a few key areas:
- Integrated charging and space for two batteries:Many low-cost PSUs either omit a charger or only accommodate a single backup cell. The HAY-DC24V1ABBLPSU’s space for two 12 V batteries (recommended 7 Ah) and a current-limited charger offers a compact, ready-to-install backup solution.
- Universal mains input:The 90–264 VAC input suits global deployments. Some competitors offer only limited input ranges, requiring country-specific SKUs.
- Signalling features:Volt-free tamper and mains-fail relay contacts are professional features that some entry-level units lack; they simplify integration with alarm panels and building management systems.
- Protection and reliability:Electronic overload with shutdown and a model-fitted load fuse keep installations safer. Some cheaper units rely solely on thermal fuses or limited protection circuitry.
That said, if a project requires higher current (several amps), larger battery capacity, or 24 V systems with tight ripple/noise tolerances for sensitive electronics, installers may consider higher-spec or larger-format PSUs and dedicated UPS systems. The HAY-DC24V1ABBLPSU is positioned squarely for low-power, cost-effective, and reliable security applications rather than for high-current industrial uses.
Customer feedback and typical installer impressions
While specific customer testimonials may vary by reseller and project, common installer feedback for products of this type typically highlights reliability, ease of installation and value. Representative comments you might expect include:
- "Compact and practical — fits neatly in the equipment cupboard and saves us running separate battery enclosures."
- "The tamper contacts and mains-fail relay make integration into alarm systems straightforward — a real time-saver on site."
- "Good build quality for the price point; the universal mains input is handy for multi-region projects."
If you require verified testimonials for marketing or procurement, request customer case studies or references from your supplier or distributor, or check reseller product pages and industry forums for real-world reviews of the HAY-DC24V series.
Conclusion — why this product is a great choice
The Haydon HAY-DC24V1ABBLPSU is a well-rounded, practical power solution for low-power security and access-control systems. Its combination of a regulated 24 V output, integrated battery charging, space for two 7 Ah batteries, and professional signalling (tamper and mains-fail relay) makes it an efficient single-box solution for installers who need dependable standby power without adding complexity. With universal mains compatibility, robust protections and clear status indicators, it balances cost-effectiveness with the features expected in modern security installations.
Choose the HAY-DC24V1ABBLPSU when you need a compact, installer-friendly PSU that provides both everyday power and reliable backup capability for intruder panels, access control, CCTV ancillaries and other low-power security equipment. For full technical details, performance curves, and installation guidance, consult the Haydon HAY-DC24V series datasheet and your supplier’s documentation before installation.
