Wheelock® POWERPATH NAC Power Supply
Supervised Remote Power and Battery Charging for Expanded NAC Capability
The Wheelock® POWERPATH (PS-8-LP) is a supervised remote power supply and battery charger engineered for expanded power distribution and supervision of Notification Appliance Circuits (NACs) in fire and life safety systems.
Housed in a low-profile red steel cabinet, the PS-8-LP delivers 8 amps of regulated, filtered 24 VDC power across up to four Class B or two Class A NAC outputs — and can expand to eight Class B or four Class A circuits with the optional PS-EXP module. Designed for seamless integration with Kidde Fire Systems’ AEGIS-PHX™, ARIES™-SLX, and ARIES™-MLX control units, it ensures reliable notification appliance performance even in demanding commercial or industrial environments.
Key Advantages
- High-Capacity Power
Provides 8 amps of total alarm current distributed across up to four NAC circuits. - Flexible Output Configuration
Supports Class A or Class B circuits and can expand up to eight Class B with the PS-EXP module. - Integrated Supervision
Continuously monitors circuit integrity, AC power, battery status, and ground faults. - Built-In Synchronization
Includes Wheelock® sync output for strobes and horns — with audible silence capability.
- Filtered & Regulated Output
Maintains stable 24 VDC operation for connected appliances, improving reliability and signal quality. - Auxiliary Power Options
Offers a 2.5 A auxiliary output (resettable) or 240 mA constant output for ancillary devices. - Comprehensive Troubleshooting
Features 37 distinguishable diagnostic trouble conditions for faster maintenance and fault isolation.
Applications
The PS-8-LP is ideal for:
- Expanding NAC capacity on fire alarm systems
- Providing auxiliary power to system accessories
- Synchronizing horns and strobes across large facilities
- Meeting ADA/NFPA 72 requirements for audible and visual signaling
- Commercial, institutional, and industrial buildings requiring extended notification coverage
System Architecture
Construction & Design
Cabinet: Low-profile, red powder-coated steel enclosure
Dimensions: 17 in H × 13 in W × 3.5 in D (43 cm × 33 cm × 9 cm)
Weight: 9.4 lb (unit) / 11.5 lb (shipping)
Battery Compartment: Houses up to two 7 Ah sealed lead-acid or gel batteries
Mounting: Wall-mountable, lockable enclosure with internal charger and supervision LEDs
Input Control: Accepts activation from two NAC circuits or two dry contact inputs
Technical Specifications
| SPECIFICATION | DETAILS |
|---|---|
| Input Power | 120 VAC ±10%, 50/60 Hz, 4.25 A (Standby) / 5.32 A (Alarm) |
| Battery Backup | 24 VDC connection (sealed lead-acid or gel type) |
| NAC Output | Four Class B or Two Class A (3.0 A per circuit, 8 A total) |
| Optional Expansion | PS-EXP module – Eight Class B or Four Class A circuits |
| Output Voltage | 24 VDC regulated and filtered |
| Auxiliary Output | 2.5 A resettable / 0.24 A constant |
| Supervision | AC fail, battery presence, low battery, ground fault, circuit trouble |
| Operating Modes | Normal, Wheelock Sync, In>Out Sync, True Input Follower, Temporal (Code 3) |
| Trouble Diagnostics | 37 unique trouble codes via LED indicators |
| Temperature Range | 32°F to 120°F (0°C to 49°C) |
| Enclosure Rating | Indoor installation only |
Compliance & Certifications
- UL 864 (NAC Power Supply Applications)
- UL 1481 (Power Supplies for Fire Protective Signaling Systems)
- Factory Mutual (FM) Approved
- NFPA 70 & NFPA 72 Compliant
Resources
Data Sheet: Wheelock® POWERPATH NAC Power Supply (K-75-017)
Resource links coming soon!
Expand Your System with Confidence
The Wheelock® POWERPATH NAC Power Supply delivers dependable performance and flexible power distribution for today’s complex fire alarm and suppression systems. Whether used to extend NAC capacity, drive additional notification appliances, or synchronize system alerts, POWERPATH ensures your network stays reliable, responsive, and code-compliant, when every second matters.
