Altronix T2PXK78D 2-Channel 8-Output Power Controller

The Altronix T2PXK78D is a 2-channel, 8-output power distribution controller purpose-built for coordinated load management in security and access control installations. This unit combines dual-channel switching capability with eight independent output terminals, enabling flexible power routing and redundancy in mission-critical applications where distributed power control and circuit protection are non-negotiable.

Overview

The T2PXK78D addresses a specific deployment gap: integrators need per-circuit power control without stringing together multiple single-channel modules. The dual-channel architecture means you can segregate loads (e.g., solenoid locks on channel 1, camera auxiliary power on channel 2) and manage them independently — or configure both channels in parallel for high-current scenarios. Each of the eight output terminals draws from one of the two channels, so you're not limited to two outputs total; instead, you get flexible distribution across eight discrete points.

The 10A per-channel capacity covers most access control and distributed CCTV scenarios — solenoid lock circuits (typically 1–3A per lock), camera power supplies, and auxiliary devices like door sensors or relay modules all fit comfortably within this envelope. If you're powering a single large load, 10A is substantial; if you're splitting across multiple outputs, the per-channel limit still provides predictable current budgeting per branch.

Key Features

• 2-Channel Independent Switching: Manage two separate loads or circuits with one device, reducing cabinet real estate and wiring complexity — particularly valuable in retrofit installations where panel space is constrained.
• 8 Isolated Output Terminals: Distribute power across eight discrete outputs instead of daisy-chaining devices; each terminal is independently accessible for simpler troubleshooting and load balancing.
• 10A Per-Channel Current Capacity: Sufficient headroom for typical solenoid locks (1–3A), camera PoE injectors, and auxiliary power devices without oversizing or power-budget surprises on installation day.
• Integrated PTC (Positive Temperature Coefficient) Protection: Replaces fuses on every output — no field-swappable fuses means fewer service callbacks, faster MTTR (mean time to restore), and automatic recovery once an overload clears. PTC devices degrade gracefully; they don't catastrophically fail.
• UL Listed Construction: Meets North American electrical safety standards; required for insurance and code compliance in commercial and institutional deployments — non-negotiable if your integrator or end-customer requires documented compliance.
• DIN-Rail Mountable Form Factor: Installs directly into standard control enclosures alongside breakers, terminal blocks, and relays — no custom brackets or panel fabrication needed, reducing assembly time and assembly error.
• Lifetime Limited Warranty: Covers defects in materials and workmanship, standard Altronix terms — confirm specific exclusions and claim process with your distributor at purchase.
• Designed for Altronix Power Management Ecosystems: Integrates with Altronix redundant power supplies, UPS modules, and supervision circuits — common in large multi-site deployments where centralized power intelligence is required.

Typical Applications

• Access Control with Redundancy: Deploy multiple solenoid lock circuits on independent channels; if one channel fails or trips, the other circuit remains live.
• Distributed CCTV Power: Route main camera power through one channel, auxiliary devices (IR illuminators, heaters, PTZ motors) through the other — allows you to isolate and manage thermal load separately.
• Integrated Security Panels: Combine access, video, and alarm subsystems in a single enclosure with coordinated power distribution — reduces interconnect complexity and improves diagnostics.
• Building Automation: Centralized power distribution with individual circuit protection for door holders, electronic strikes, and auxiliary sensors across multiple zones or floors.

Integration and Compatibility

The T2PXK78D is vendor-agnostic on the load side — it delivers 12VDC or 24VDC (as configured at the input) to any compliant solenoid, camera power supply, or relay-driven device. On the supervision and control side, it integrates with Altronix power management products and standard power infrastructure ecosystems. Input voltage is determined by your upstream power supply; output voltage mirrors the input, so the unit itself is not a buck/boost converter — it's a distribution and protection layer.

Frequently Asked Questions

Q: What's the difference between the T2PXK78D and a standard 8-output power supply?

A: A standard power supply provides eight outputs from a single power channel. The T2PXK78D provides eight outputs from two independent channels, enabling separate load management, independent current budgeting, and redundancy. If one channel overloads and trips, the other channel remains operational — critical in mission-critical access control.

Q: Can I daisy-chain multiple T2PXK78D units?

A: Yes. You can cascade multiple T2PXK78D controllers if your power supply and wiring support the aggregate current draw. Each unit requires its own input connection to a power source; outputs can be distributed across multiple devices to expand your terminal count beyond eight.

Q: What happens when a PTC protection device trips?

A: The PTC automatically opens when overcurrent is detected, cutting power to that output. Once the fault clears and the circuit cools, the PTC resets itself — no manual fuse replacement required. This reduces downtime and field service calls.

Q: Is the T2PXK78D suitable for 24VDC systems?

A: Yes. The T2PXK78D is voltage-agnostic — it passes through whatever voltage your upstream power supply delivers (typically 12VDC or 24VDC). Check your input power supply specifications to confirm.

Q: What UL listing does the T2PXK78D hold?

A: The T2PXK78D is UL Listed for safety; consult the product datasheet or your distributor for specific UL component recognition details and any regional code limitations.

Q: Can I use the T2PXK78D in an IP-based (network) access control system?

A: The T2PXK78D is a hardwired DC power distribution device — it is not networked. It integrates with IP-based access control systems as a downstream power layer that energizes solenoid locks, door sensors, and other 12/24VDC peripherals.

Ted Perry

Perspective based on aggregated IP Security Depot and affiliated engineering team experience.

The T2PXK78D is a niche product, but if you're designing a hardwired access control or distributed power architecture, it closes a real gap. Most single-device power distributors give you one channel and multiple outputs; the T2PXK78D flips that — two channels, eight outputs. That dual-channel topology is the whole point, and it matters when you're running solenoid circuits and auxiliary loads that need independent supervision.

Technical Highlights:

• 10A Per-Channel Capacity: Enough for a quad-lock access point (4 × 2.5A solenoids) on one channel, leaving the second channel free for camera IR heaters, sensor power, or future expansion — clean current budgeting without oversizing a single monolithic supply.
• PTC Protection (Not Fuses): Every output is protected by a polymeric fuse that resets automatically once the fault clears. Eliminates field calls to replace blown fuses, cuts MTTR by 50–70% in typical deployments, and reduces inventory overhead (no fuse stock).
• UL Listed, DIN-Rail Mount: Passes code inspection out of the box, installs in 2–3 minutes alongside existing breakers and terminal blocks — no custom panel work, no delay to project closeout.

Deployment Considerations:

• The T2PXK78D is a pass-through device — it doesn't regulate or condition voltage. Input voltage determines output voltage. If your power supply drifts from 12VDC to 11V under load, the T2PXK78D will pass that degradation downstream. Spec your upstream supply accordingly.
• Eight terminals sounds like flexibility, but both channels are shared — if you connect four outputs to channel 1 and four to channel 2, each channel still sees 10A total, not 10A per output. Plan your load distribution at design time; last-minute rebalancing on-site is friction.
• This is not a networked device. If you need remote power cycling, circuit monitoring, or alert reporting, you'll need a separate networked power management controller upstream — plan your architecture early.

Deploy the T2PXK78D when you need hardwired, redundant power distribution with no network overhead — classic multi-lock access control, legacy alarm panel auxiliary power, or campus-wide distributed solenoid systems where a single-channel supply would force awkward load-sharing or oversizing.