Altronix SMP7PMP8CB220 12/24VDC 8-Output Supervised Power Supply Charger
The Altronix SMP7PMP8CB220 is a 220VAC-input, regulated power supply and battery charger designed for international and export security installations that require supervised, multi-output 12VDC or 24VDC power in a single wall-mount enclosure. With 6A of continuous output current distributed across eight PTC-protected outputs and onboard Form C supervision contacts for both AC fail and low battery, this unit is built for commercial-grade power supply applications where accountability and uptime matter. If you are deploying IP cameras, access control readers, or alarm panels on a 220VAC mains circuit — particularly outside North America — the SMP7PMP8CB220 is sized for the job.
Key Features
- 220VAC Input with Wide Working Range: Accepts 198VAC to 256VAC at 50/60Hz, so it handles grid fluctuations common in international installations without nuisance trips. Input draw is 1.5A, requiring only a 330VA AC source.
- Selectable 12VDC or 24VDC Output: A single output voltage selector covers both common security device voltages, letting you standardize on one power supply SKU across access control and analog camera retrofits instead of stocking two separate units.
- 6A Continuous Output: Total 6A budget across the eight outputs supports a mix of cameras, readers, and sensors simultaneously. Individual outputs are rated at 2.5A each — adequate for most cameras and single-door access hardware.
- Eight PTC-Protected Outputs (Auto-Resettable): PTC (positive temperature coefficient) fuses reset automatically after an overcurrent event clears. That means a shorted camera run won't require a field visit to swap a fuse — the output recovers on its own once the fault is removed.
- Built-In Battery Charger (0.7A): The integrated charger supports sealed lead acid or gel-cell batteries up to 12VDC/7AH (two batteries fit inside the BC300 enclosure). Switchover to battery backup is zero-voltage-drop, so connected devices see no interruption during a mains failure.
- Form C Supervision Contacts — AC Fail and Low Battery: Both AC loss and low battery conditions report via dry Form C contacts. Wire these to a panel or monitoring input and you get real-time alerts without polling — critical for UL-listed alarm system integrations.
- Short Circuit and Thermal Overload Protection: Electronic protection on the output stage guards against wiring faults during commissioning — useful when pulling cable through conduit where accidental shorts are common.
- LED Indicators for AC Input and DC Output: On-board status LEDs confirm live AC and DC output at a glance, cutting troubleshooting time during installation and service calls.
Enclosure and Installation
The SMP7PMP8CB220 ships pre-installed in the BC300 wall-mount enclosure (13"W x 13.5"H x 3.25"D). The cabinet is sized for indoor use and includes 1/2" and 3/4" combination knockouts for conduit entry. It accommodates two 12VDC/7AH batteries internally — batteries sold separately. At 8.3 lbs. product weight, a single installer can mount and dress the unit comfortably. Operating range is 0°C to 49°C (32°F to 120°F), which covers most indoor mechanical room and IDF closet environments. Explore the full Altronix power solutions catalog for companion distribution modules and enclosure accessories, or pair this unit with an access control system that requires supervised power input.
Frequently Asked Questions
Q: Can the SMP7PMP8CB220 be used on a 110VAC circuit?
A: No. The SMP7PMP8CB220 is designed for 220VAC input (working range 198–256VAC, 50/60Hz). It is not compatible with standard 110VAC North American circuits. For 115VAC applications, Altronix offers separate models in the SMP series.
Q: What battery types and sizes does the enclosure support?
A: The BC300 enclosure accommodates up to two 12VDC/7AH sealed lead acid or gel-type batteries. Batteries are sold separately. Maximum charge current is 0.7A.
Q: What does Form C supervision mean in practice?
A: Form C contacts are dry relay contacts that provide both a normally-open and normally-closed signal. For the SMP7PMP8CB220, separate Form C outputs report AC fail and low battery conditions — allowing direct wiring to a fire or burglar alarm panel's supervised input zone without additional relay hardware.
Q: Are the outputs fused, and do I need to replace fuses after a fault?
A: All eight outputs use PTC (auto-resettable) protection. After an overcurrent or short clears, the output resets automatically — no fuse replacement required.
Q: What is the output voltage tolerance and regulation?
A: Outputs are filtered and electronically regulated at either 12VDC or 24VDC (user-selectable). The unit also includes short circuit and thermal overload protection on the output stage.
Q: What is the warranty on the SMP7PMP8CB220?
A: Altronix provides a lifetime warranty on the SMP7PMP8CB220 per manufacturer documentation.
The SMP7PMP8CB220 is the unit I reach for on international site builds where the local mains runs 220VAC and the project spec calls for supervised power with battery backup in a single enclosure. The 198–256VAC working range handles the kind of voltage sag you encounter in older commercial buildings abroad without nuisance dropout, and the onboard Form C contacts mean I can wire AC fail and low battery straight to a panel zone rather than adding a relay board.
Technical Highlights:
- Zero-Voltage-Drop Battery Switchover: Connected devices see no interruption when mains fails — critical for access control readers and alarm panels where a momentary drop can trigger false events or door releases.
- 8 PTC Auto-Resettable Outputs @ 2.5A each: A shorted run self-clears once the fault is removed. On a multi-output distribution board, that means one bad cable run doesn't kill a service call — the other seven outputs stay live.
- Dual Battery Capacity (2× 12VDC/7AH internal): The BC300 enclosure holds two batteries side-by-side, doubling standby runtime without external battery cabinets — a space and cost advantage in tight IDF closets.
Deployment Considerations:
- Plan the 330VA AC source requirement before rough-in — a dedicated 220VAC 15A circuit is standard, but verify the panel capacity if this unit shares a leg with HVAC or lighting loads.
- The 49°C (120°F) operating ceiling is the watch-out for unconditioned mechanical rooms in warm climates — if the room sees summer peaks above that, add ventilation or choose a unit with a higher thermal rating.
This unit is well-suited to export access control projects — hotel key-card deployments in the Middle East, campus camera retrofits in Latin America, or any site where 220VAC mains and panel-supervised power are both required in a single indoor wall-mount package.
