Altronix T2KK38D TROVE2 Power Supply and Enclosure Kit
Overview
The Altronix T2KK38D is a pre-assembled TROVE2 power distribution kit combining a 100VA transformer, a 6A linear power supply, and a UL-listed enclosure — purpose-built for commercial access control and surveillance installations where you need clean, supervised DC power with room to grow. At 27.25" x 21.5" x 6.5", the enclosure is large enough to house up to four 12VDC/12AH batteries alongside the power supply and distribution hardware, making it a practical single-cabinet solution for mid-size panel builds.
Output voltage is field-selectable between 12VDC and 24VDC, giving the T2KK38D flexibility across access control panels, door strikes, magnetic locks, and camera power distribution scenarios where the voltage requirement isn't always uniform across a project. The 6A continuous output rating is the real working number — not a burst figure — which matters when you're calculating load across multiple devices on the same panel.
Key Features
- 6A Continuous Output at 12VDC or 24VDC: Selectable output voltage means one SKU covers both 12V and 24V load environments. The 6A continuous ceiling gives you real headroom for multi-device panels without thermal derating at steady state.
- 100VA / 16VAC Transformer: The on-board 100VA transformer handles the AC-to-DC conversion internally — no external transformer to source, mount, or wire separately. Input is standard 115VAC/60Hz at up to 3.5A draw from the panel feed.
- Up to Four 12VDC/12AH Batteries: The enclosure is sized to hold four 12AH sealed lead-acid batteries, giving you meaningful standby runtime for access control or alarm loads. For life-safety applications where code requires calculated battery backup, four 12AH cells in this configuration deliver substantial reserve capacity.
- Form "C" AC Fail and Battery Fail Supervision: Both the AC fail and battery fail conditions produce Form C relay contacts — normally open and normally closed simultaneously — so you can wire supervision into virtually any panel or monitoring receiver without additional relays or converters. This is the correct architecture for UL-listed alarm installations.
- 2.5A PTC-Protected Outputs: Positive temperature coefficient (PTC) overcurrent protection on outputs self-resets after a fault clears, eliminating the nuisance fuse-replacement calls that plague fused power supplies in the field. The 2.5A PTC rating per output suits door hardware loads directly.
- 27.25" x 21.5" x 6.5" Steel Enclosure: The cabinet depth of 6.5" accommodates standard SLA battery dimensions alongside the power supply hardware — a common failure point on undersized enclosures. Conduit knockouts are provided for 2", 1", and 3/4" conduit entries, so field conduit routing isn't an afterthought.
- CE European Conformity Listed: CE listing is documented for the T2KK38D, confirming the assembly meets European electromagnetic compatibility and safety directives — relevant for projects with multinational compliance requirements or export.
- Operating Range 0°C to 49°C: The rated operating temperature covers standard interior mechanical room and electrical closet environments. Storage tolerance extends to -20°C to 70°C, so units can be warehoused or shipped without conditioning concerns.
- Relay Rating 28VAC or VDC @ 2.5A: Supervision relay contacts are rated for both AC and DC loads up to 28V at 2.5A — wide enough to interface with virtually any monitoring or control panel without relay buffering.
Integration and Compatibility
The T2KK38D is designed to integrate into Altronix's TROVE ecosystem, which pairs structured wiring enclosures with their power supply and access control product lines. The selectable 12VDC/24VDC output makes it compatible with the majority of commercial access control panels and door hardware on the market. Form C supervision contacts connect directly to monitoring inputs on DSC, Bosch, Honeywell, and comparable alarm panels without adapter boards.
When planning battery backup runtime, consult your power supply sizing guide — four 12AH cells at 24VDC output provide a meaningfully different runtime curve than at 12VDC, and the load profile of magnetic locks versus electric strikes affects the calculation significantly. For projects requiring PoE camera power distribution in the same cabinet, pair with a dedicated PoE switch rather than loading the T2KK38D's DC outputs with camera current draws that belong on a separate power plane.
Frequently Asked Questions
Q: Can the T2KK38D output both 12VDC and 24VDC simultaneously to power different devices?
A: No. The output voltage is selectable — either 12VDC or 24VDC — not both simultaneously. Choose the output voltage that matches your primary load requirement before commissioning. If a project requires both voltages, a second power supply is needed.
Q: How many batteries can the T2KK38D enclosure hold, and what size?
A: The enclosure supports up to four 12VDC/12AH sealed lead-acid batteries. Battery dimensions must be confirmed against the enclosure interior dimensions (27.25" x 21.5" x 6.5") to ensure physical fit with all four cells installed alongside the power supply hardware.
Q: What conduit sizes are supported on the T2KK38D enclosure?
A: The enclosure includes knockouts for three conduit sizes: 2" conduit (2.415" knockout), 1" conduit (1.362" knockout), and 3/4" conduit (1.115" knockout). Select the appropriate knockout for your conduit run during rough-in.
Q: What is the maximum continuous output current of the T2KK38D?
A: The rated continuous output is 6A at the selected voltage (12VDC or 24VDC). Size your connected load budget to stay within this ceiling under worst-case conditions — include door hardware inrush where applicable.
Q: How does the T2KK38D signal a power failure to a monitoring panel?
A: Both AC fail and battery fail conditions are supervised via Form C relay contacts, providing normally open and normally closed outputs simultaneously. These connect directly to standard zone inputs on commercial alarm and access control panels for remote monitoring.
Q: What is the input power requirement for the T2KK38D?
A: The unit requires 115VAC at 60Hz, drawing up to 3.5A at maximum load. Provide a dedicated circuit breaker-protected branch circuit sized appropriately for this draw, following local electrical code requirements.
The T2KK38D is the kit I recommend when an integrator wants to close out a mid-size access control panel build in a single cabinet purchase. The 6A continuous output at selectable 12VDC or 24VDC, combined with the 100VA transformer already mounted in the enclosure, removes two line items from the BOM and eliminates the field-wiring step of sourcing and mounting a separate transformer — that matters on a busy install day.
Technical Highlights:
- Form C Dual Supervision: Both AC fail and battery fail produce independent Form C contacts — normally open and normally closed simultaneously — at 28V/2.5A relay rating. You wire these directly to zone inputs on virtually any commercial panel without buffer relays.
- Quad Battery Capacity: Four 12VDC/12AH cells fit inside the 27.25" x 21.5" x 6.5" enclosure alongside the power supply. That's 48AH of reserve capacity at 12V — enough standby runtime to satisfy most AHJ battery backup calculations for access control on a single door cluster.
- Self-Resetting PTC Outputs at 2.5A: PTC protection on outputs eliminates fuse service calls. When a door hardware fault clears, the output recovers automatically — no truck roll to swap a blown fuse at 2:00 AM.
Deployment Considerations:
- Confirm your SLA battery physical dimensions fit four units in the enclosure before ordering batteries separately — 12AH cells vary by manufacturer and the 6.5" depth is the constraint to watch when all four are installed with wiring clearance.
- The 3.5A maximum AC input draw requires a properly sized branch circuit. On older panels with shared circuits, verify available capacity before commissioning — an undersized feed causes nuisance AC fail trips under full battery charge load.
The T2KK38D is the right choice for commercial office or light industrial access control installations with two to four controlled doors and a code-required battery backup runtime — specifically where consolidating transformer, power supply, battery, and supervision wiring into one UL-listed cabinet is the goal.
