Potter PSN-1000 Intelligent Notification Power Expander

The Potter PSN-1000 is an intelligent 10-amp notification power expander for Potter fire alarm systems, providing six NAC outputs configurable as Class A or Class B and full PLink communication with the host fire alarm control panel. When the base panel's notification appliance circuit capacity is insufficient for a large commercial fire alarm notification appliance deployment, the PSN-1000 adds substantial additional NAC power without requiring a larger base panel or a separate standalone power supply.

The 10-amp total output supports a large number of fire alarm notification appliances — including horns, strobes, combination horn-strobe devices, and alarm bells like the PDC-624 — on up to six independently configurable nac fire alarm circuits. Each circuit can be set as Class A or Class B depending on the system design. The PLink communication interface means the PSN-1000 is not simply a dumb power booster — it communicates its operational status, NAC fault conditions, and circuit supervision data back to the fire alarm control panel for complete fire alarm signalling system visibility.

For fire alarm equipment supplies contractors managing large Potter fire alarm control panel installations — including the AFC-100 and other compatible panels — the PSN-1000 is the go-to expansion module when NAC capacity must grow to serve an entire building's fire alarm notification appliance network. Large commercial buildings, multi-story structures, schools, and healthcare facilities frequently exceed the base panel's NAC output, making the PSN-1000 one of the most commonly specified Potter add-on modules in the fire alarm supply store and fire alarm wholesale market. Annual NAC circuit testing is required per NFPA 72, with all results documented in the fire alarm inspection and test records and fire alarm inspection stickers updated after each test cycle.

NAC Circuit Configuration

Configure each of the six NAC outputs as Class A or Class B per the system design. Class A circuits provide fault-tolerant loop-back wiring that maintains fire alarm notification appliance operation even if one wire is cut. Class B circuits use end-of-line resistors for supervision. Verify each circuit configuration at the fire alarm control panel after programming and confirm the PSN-1000 communicates correctly via PLink. Fire alarm testing signage should be posted during commissioning tests to prevent occupant confusion.

Battery Backup Sizing

The PSN-1000 includes provisions for standby battery backup to maintain notification appliance circuit operation during primary power failure. Size batteries per NFPA 72 secondary power requirements for the total current draw of all fire alarm notification appliances on the six NAC circuits. Document battery installation and test dates in the fire alarm inspection and test records. Fire alarm testers should verify battery backup operation annually as part of the full system test.

Annual Testing

Test all six NAC circuits annually per NFPA 72. Activate the fire alarm control panel and verify all connected fire alarm notification appliances operate correctly on each circuit. Verify PLink communication status is correctly reported at the panel. Update fire alarm inspection stickers and fire alarm tags, and retain fire alarm inspection and test records for the AHJ-required retention period.

How many notification devices can the PSN-1000 support?

Total current capacity across all six nac fire alarm circuits is 10 amps. The number of fire alarm notification appliances supported depends on each device's current draw. Refer to the current draw specifications for each horn, strobe, or combination device and size circuit loads to stay within the 10-amp total. Never exceed circuit or total current ratings — this is a primary cause of nac fire alarm circuit faults and AHJ deficiencies during fire alarm inspection and test records reviews.

Is the PSN-1000 compatible with all Potter panels?

The PSN-1000 requires a Potter fire alarm control panel with PLink communication capability, such as the AFC-100. Verify compatibility with your specific panel model before specifying the PSN-1000. Not all Potter panels support PLink — consult the Potter product compatibility guide. For fire alarm stores and fire alarm wholesale distributors, communicating this compatibility requirement to customers is essential to prevent incorrect orders.

Can the PSN-1000 be used as a standalone power supply?

No. The PSN-1000 requires PLink communication with a compatible Potter host panel and cannot operate independently. For standalone auxiliary power supply applications, a dedicated fire alarm power supply booster is required. The PSN-1000 is an intelligent expander — not a standalone unit.