Altronix TP1640 16VAC 40VA Plugin Transformer
The Altronix TP1640 is a plugin transformer engineered to supply 16VAC at 40VA output capacity, filling a specific role in modular security power distribution. Unlike standalone enclosure-mounted transformers, the TP1640 plugs directly into compatible Altronix equipment—eliminating bulk, simplifying wiring, and reducing the part count in your power infrastructure. This approach is practical when you need auxiliary power for access control systems, door strikes, or supplemental low-voltage circuits within an existing modular installation.
Key Features
- 16.5VAC nominal output: Delivers the standard voltage for security-grade solenoids, mag locks, and low-voltage relays. This voltage sits in the sweet spot for reliable relay operation without over-stressing coils rated for 16VAC nominal.
- 40VA rated capacity: Sufficient to power a single mag lock door strike (typically 20–28VA) or two to three standard access control solenoids simultaneously. Know your load—if a single device draws more than 40VA, this unit will not meet your requirement.
- Plugin form factor: Integrates directly into Altronix AL624 and compatible modular enclosures. No separate housing, no surface-mount brackets, no additional panel real estate consumed—the transformer becomes part of the cabinet architecture.
- Compact integration: Reduces clutter and wiring runs compared to standalone transformer installations. Fewer external connections mean fewer points of failure and easier troubleshooting in modular power systems.
- Lifetime Limited Warranty: Altronix backs the unit for the life of the equipment under normal use. Standard manufacturer coverage applies—verify your distributor's terms on defects and field replacements.
- Designed for security infrastructure: Purpose-built for access control, door locks, and auxiliary power applications. Not a general-purpose transformer—it's optimized for the voltage and load profiles security systems actually demand.
Integration & Compatibility
The TP1640 is engineered as a plugin module for Altronix power distribution products, specifically listed for use with the AL624 and similar modular equipment. Verify your enclosure model supports the TP1640 plugin design before ordering—physical fitment and electrical connections are specific to compatible units. If you're upgrading or expanding an existing modular power system, confirm the TP1640 slot is available and your control logic accounts for the additional auxiliary circuit.
Typical Deployment Scenarios
The TP1640 is commonly deployed in distributed access control architectures where each building zone or floor requires independent auxiliary power for door hardware without a separate power supply. It also serves as a redundant or supplemental transformer in larger security installations where modular expandability is a design requirement. If you're integrating access control systems into a cabinet-based power architecture, this transformer handles the auxiliary power load cleanly.
Limitations and Sizing Considerations
At 40VA, the TP1640 has a defined ceiling. A single high-current mag lock or multiple simultaneous loads will exceed capacity and cause nuisance shutdown or underperformance. Calculate your exact load—measure or sum the VA ratings of every connected device—and confirm the TP1640 leaves 20–30% overhead for inrush current. If your load is consistently above 32VA, consider a higher-capacity transformer or a secondary unit. Plugin transformers also depend on enclosure ventilation; ensure the AL624 or compatible host has adequate airflow to prevent thermal stress over extended runtime.
Why Choose Plugin Architecture
Plugin transformers simplify modular power design. You add capacity only where needed, keep panel density low, and avoid the cost and space overhead of multiple standalone units. For integrators building repeatable, scalable access control or building automation power solutions, this modular approach reduces engineering time and standardizes parts inventory.
Frequently Asked Questions
Q: Is the TP1640 compatible with all Altronix enclosures?
A: No. The TP1640 is a plugin unit designed for specific Altronix modular equipment, notably the AL624. Verify your enclosure supports the TP1640 plugin slot before purchase. Check your enclosure documentation or contact the manufacturer for compatibility confirmation.
Q: Can I use the TP1640 as a standalone transformer outside an enclosure?
A: The TP1640 is purpose-designed as a plugin module. Standalone installation is not recommended and may void the warranty. Use it only as intended within a compatible host enclosure.
Q: What happens if I exceed the 40VA rating?
A: Exceeding the rated output will cause voltage sag, potential thermal shutdown, or damage to the transformer. Calculate your total connected load (in VA) and ensure it does not exceed 32VA sustained, leaving 20–30% overhead for inrush current. If your load is higher, select a higher-capacity transformer or use a second unit.
Q: Does the TP1640 require any special installation steps?
A: Installation is straightforward—plug the unit into the designated slot on your compatible Altronix enclosure. Verify the slot is clear, the enclosure is powered down during installation, and all connections are secure. Follow the host enclosure's wiring diagram to route the 16VAC output to your auxiliary circuits.
Q: What is the warranty on the Altronix TP1640?
A: The TP1640 includes a Lifetime Limited Warranty under normal use and operating conditions. Verify your distributor's terms on coverage, defects, and field replacement procedures.
Q: Can the TP1640 be used in outdoor enclosures?
A: The TP1640 itself is not rated for outdoor exposure. It is designed for use within an enclosure. If you require outdoor power distribution, ensure the host enclosure (e.g., AL624) is rated for the intended environment (IP rating, temperature range, etc.).
Ted PerryPerspective based on aggregated IP Security Depot and affiliated engineering team experience.
The Altronix TP1640 is a workhorse for integrators building modular access control power systems. The 40VA capacity at 16VAC nominal is precisely calibrated for the solenoid and relay loads you encounter in door hardware and low-voltage switching circuits. The plugin architecture eliminates the bulk and wiring complexity of standalone transformers—you gain density and simplicity by building power distribution into the enclosure structure itself.
Technical Highlights:
- 16.5VAC nominal output: Matches the design voltage of security-grade solenoids and mag locks. This prevents coil stress and extends device life compared to over- or under-voltage conditions.
- 40VA rated capacity: Covers a single mag lock (20–28VA) or two to three standard access control solenoids running simultaneously. Load pooling across multiple circuits requires strict power budgeting—measure actual draw before deployment.
- Plugin integration: Reduces panel real estate, eliminates external transformer housings, and cuts wiring runs. For repeatable, scalable access control builds across multiple sites, this modular approach standardizes parts and cuts engineering overhead.
Deployment Considerations:
- Verify slot availability on your specific Altronix host enclosure (AL624 is explicitly supported; confirm others). Physical fitment is not universal across the Altronix product line.
- Load calculation is non-negotiable. Exceeding 40VA sustained will trigger voltage sag or thermal shutdown. Size your circuits conservatively—aim for 32VA sustained maximum to leave headroom for inrush current.
- Enclosure ventilation matters. Plugin transformers dissipate heat directly into the host cabinet. Ensure the AL624 or compatible enclosure has adequate airflow for 24/7 operation, especially in enclosed or recessed mounting scenarios.
Position the TP1640 in distributed access control architectures where each zone or floor requires independent auxiliary power for door hardware within an existing modular power cabinet. It is not a general-purpose transformer—it is purpose-engineered for security infrastructure power distribution. Choose it for scalability and density; avoid it if you need higher VA capacity or standalone flexibility.
