DC 12V 3A Access Control Power Supply | NO/NC Relay Output
DC 12V 3A Access Control Power Supply | NO/NC Relay Output
DC 12V 3A Access Control Power Supply with NO/NC Relay Output
Power your electric lock or door access control system with confidence using this reliable DC 12V 3A switching power supply. Featuring both Normally Open (NO) and Normally Closed (NC) relay outputs, this compact unit is engineered for seamless integration with electric strikes, magnetic locks, and access control panels. Its wide AC input range (110–240V) makes it suitable for use in virtually any country, and built-in overload and short-circuit protection keeps your equipment safe at all times.
Key Features
- Universal AC Input: Accepts 110–240V AC at 50–60Hz — compatible with power standards worldwide
- Stable DC Output: 12V DC at 3A (36W) with a ±10%–15% adjustable trim range for fine-tuned voltage control
- NO/NC Relay Output: Supports both Normally Open and Normally Closed configurations for maximum wiring flexibility
- Short-Circuit & Overload Protection: All outputs are fully protected; 0–15 second delay lock on power output safeguards connected devices
- High Insulation Voltage: Primary/secondary inter-polar: 1500V AC; primary/shell: 1500V AC; secondary/shell: 500V AC
- Wide Operating Temperature: -20°C to +35°C for reliable performance in varied environments
- Compact Form Factor: Approx. 103 × 66 × 33mm (L × W × H) — fits neatly inside access control enclosures
- Full-Load Hold Time: Typically 20ms, ensuring momentary power interruptions don't disrupt lock operation
Specifications
| Model | K80 |
| Input Voltage | 110–240V AC |
| Input Frequency | 50–60Hz |
| Output Voltage | DC 12V |
| Output Current | 3A |
| Output Power | 36W |
| Voltage Trim Range | ±10%–15% |
| Hold Time | Typically 20ms at full load |
| Operating Temperature | -20°C to +35°C |
| Insulation Voltage | 1500V AC (primary/secondary); 500V AC (secondary/shell) |
| Overload Protection | Yes — 0–15 second delay lock on output |
| Dimensions | 103 × 66 × 33mm |
| Country of Origin | Made in Mainland China |
What's in the Box
- 1 × DC 12V 3A Access Control Power Supply (Model K80)
Helpful Resource
For guidance on safe electrical installation and wiring practices, refer to the OSHA Electrical Safety Standards.
Frequently Asked Questions
Q: What types of electric locks is this DC 12V 3A power supply compatible with?
A: This power supply is compatible with a wide range of 12V DC-powered access control hardware, including electric strike locks, magnetic door locks (maglocks), and electric bolt locks. The NO/NC relay output makes it flexible for both fail-secure and fail-safe lock configurations.
Q: Can I use this power supply in the US and internationally?
A: Yes. The unit accepts a universal AC input of 110–240V at 50–60Hz, making it suitable for use in North America, Europe, Asia, and most other regions. You may need a plug adapter for different outlet types, but no voltage converter is required.
Q: What does the overload protection feature do?
A: If a short circuit or overload condition is detected on any output, the power supply automatically protects itself and connected devices. The 0–15 second output delay lock prevents damage during startup or fault conditions, adding an extra layer of security for your access control system.
Q: How do I adjust the output voltage?
A: The unit includes a built-in trim adjustment allowing ±10%–15% fine-tuning of the output voltage around the 12V nominal value. This is useful for compensating for cable voltage drop in longer wiring runs or for matching the precise requirements of specific lock hardware.