1. Introduction
This manual provides detailed instructions for the installation, operation, and maintenance of the Seco-Larm Enforcer PH-A1612-PUQ Rack Mount CCTV Power Supply. This unit is designed to provide reliable power for CCTV systems, featuring field-selectable output voltage and robust protection mechanisms. Please read this manual thoroughly before installation and operation to ensure proper functionality and safety.
2. Safety Information
Always observe the following safety precautions to prevent damage to the unit or injury to personnel:
- Ensure the power supply is disconnected from the main power source before performing any installation, wiring, or maintenance.
- Installation should be performed by qualified personnel in accordance with all local and national electrical codes.
- Do not expose the unit to moisture or extreme temperatures.
- Verify correct voltage selection (24VAC or 28VAC) before connecting devices to avoid damage.
- Do not overload the power supply beyond its specified maximum current ratings.
3. Key Features
The Seco-Larm Enforcer PH-A1612-PUQ Power Supply offers the following features:
- Compact 1U height, compatible with standard 19-inch equipment racks.
- Field-selectable power output: 24VAC or 28VAC.
- Individual status LEDs to indicate tripped fuses for each output.
- Flexible mounting options: rack, wall, and desk.
- Integrated cable management options for organized wiring.
- Removable screw terminal blocks for easy installation.
- Overheat-protected power transformer(s) with thermal fuses.
- PTC (Positive Temperature Coefficient) fuses for self-resetting overcurrent protection.
4. Package Contents
Please verify that all items are present and undamaged:
- Seco-Larm Enforcer PH-A1612-PUQ Power Supply Unit
- Mounting hardware (screws, rack ears if applicable)
- User Manual
- Power Cord
5. Setup and Installation
5.1 Mounting Options
The PH-A1612-PUQ offers versatile mounting:
- Rack Mount: Install the unit into a standard 19-inch equipment rack using the provided rack ears and screws. Ensure adequate ventilation around the unit.
- Wall Mount: The unit can be mounted to a wall using appropriate fasteners (not included) through designated mounting holes.
- Desk Mount: The unit can be placed on a flat, stable surface.
5.2 Power Output Selection
Before connecting any devices, select the desired output voltage:
- Ensure the power supply is disconnected from the AC power source.
- Locate the voltage selection switch on the unit (refer to the diagram below).
- Set the switch to either 24VAC or 28VAC according to the requirements of your CCTV cameras or other connected devices. Incorrect voltage can damage equipment.
5.3 Wiring Connections
Connect your CCTV devices to the removable screw terminal blocks. Each output channel is individually protected by a PTC fuse.
- Connect the AC input power cord to a grounded 120VAC outlet.
- Connect the positive (+) and negative (-) terminals of your CCTV devices to the corresponding output terminals on the power supply.
- Utilize the cable management brackets to maintain organized and secure wiring.

This image displays the front panel of the Seco-Larm Enforcer PH-A1612-PUQ CCTV Power Supply. It is designed for rack mounting, featuring a silver-colored front panel with numerous ventilation holes and a row of small indicator LEDs. The overall design is compact and industrial, suitable for integration into standard 19-inch equipment racks.
6. Operation
6.1 Powering On
Once all connections are secure and the voltage is selected, connect the power supply to the 120VAC power source. The unit will power on, and the status LEDs will illuminate.
6.2 Status LEDs
Each output channel has a dedicated status LED. These LEDs indicate the operational status of the respective output:
- LED ON: The output channel is functioning normally.
- LED OFF: The output channel is not receiving power, or its PTC fuse has tripped due to an overcurrent condition.
7. Maintenance
7.1 General Cleaning
Keep the unit clean and free from dust. Use a soft, dry cloth to wipe the exterior. Do not use liquid cleaners or solvents.
7.2 PTC Fuses
The PH-A1612-PUQ uses PTC (Positive Temperature Coefficient) fuses, which are self-resetting. If an output LED is off, indicating a tripped fuse, disconnect the device from that output and allow a few minutes for the fuse to cool down and reset. If the problem persists, check the connected device for faults.
8. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| No power to the unit | Power cord disconnected; no AC power from outlet; internal fault. | Check power cord connection; test outlet with another device; contact customer support if problem persists. |
| Individual output LED is OFF | Overcurrent on the channel; short circuit in connected device; PTC fuse tripped. | Disconnect device from output; wait for PTC fuse to reset (a few minutes); check connected device for faults; reconnect device. |
| Incorrect output voltage | Voltage selection switch set incorrectly. | Disconnect power; verify and adjust the voltage selection switch to the correct setting (24VAC or 28VAC). |
9. Specifications
| Feature | Specification |
|---|---|
| Model Number | PH-A1612-PUQ |
| Input Voltage | 120 VAC |
| Output Voltage | Field-selectable 24 VAC or 28 VAC |
| Number of Outputs | 16 |
| Total Supply Current (Max) | 12A @ 24VAC; 10A @ 28VAC |
| Max. Amps per Channel | 3A @ 24VAC |
| Fuse Type | PTC (Positive Temperature Coefficient) |
| Rack Size | 1U 19" (44.5 x 483 mm) |
| Dimensions (H x W x D) | 1-3/4" x 17-1/2" x 11-13/32" (45 x 445 x 290 mm) |
| Item Weight | 16.55 pounds (7.5 kg) |
| UPC | 676544010449 |
10. Warranty Information
This Seco-Larm product is warranted against defects in material and workmanship for a period of one (1) year from the date of original purchase. This warranty does not cover damage caused by misuse, abuse, accident, unauthorized modification, improper installation, or acts of nature. For warranty service, please contact your original place of purchase or Seco-Larm customer support.
11. Customer Support
If you have any questions, require technical assistance, or need to report a problem with your Seco-Larm Enforcer PH-A1612-PUQ Power Supply, please contact your dealer or visit the official Seco-Larm website for support resources and contact information.
Website: www.seco-larm.com





