Cisco FPR4K-PWR-AC Full Official Product Description
1. Part Number & Naming Definition
Market Reference Name
Cisco Firepower 4100 Series 1100W Hot-Swappable AC Power Supply Module
Market SKU:FPR4K-PWR-AC
Official Cisco Spare Part:FPR4K-PWR-AC-1100=
Naming Breakdown
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FPR4K: Cisco Firepower 4100 security appliance platform
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PWR: Field-replaceable power supply unit
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AC: Alternating current mains input variant
Core Product Positioning
The Cisco FPR4K-PWR-AC is a high-efficiency hot-swappable 1100W AC power supply engineered exclusively for Cisco Firepower 4100 Series next-generation firewalls. It converts universal AC mains power into regulated stable DC power for security processors, interface ports, storage drives, fan assemblies and internal control subsystems. Designed for enterprise and data center security deployments, this power unit supports load sharing and 1+1 redundant power architecture to eliminate single-point power failure risks for mission-critical firewall, IPS and threat defense services.
2. Hardware Compatibility
Supported Security Appliances
Cisco Firepower 4110, FPR4112, FPR4115, FPR4125, FPR4145
Supported Software
Cisco Firepower Threat Defense (FTD), ASA Firepower OS
Important Deployment Restriction
Donotmix AC and DC power supply modules within the same chassis. All installed power supplies must share identical input type.
Unsupported Platforms
Firepower 2100, Firepower 4200, Firepower 9300, Catalyst switches, ISR/ASR routers
3. Electrical & Physical Specifications
Form Factor
Rear-mounted hot-swappable FRU with mechanical eject latch; supports OIR (Online Insertion and Removal) without appliance power interruption
Airflow Direction
Front-to-back airflow (port-side intake, rear exhaust), matching Firepower 4100 native thermal design for hot/cold aisle data center rack layouts
AC Input Parameters
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Input Voltage: 100–240 VAC universal auto-ranging
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Input Frequency: 50 / 60 Hz
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Max Input Current: 13 A @ 100 VAC
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Active power factor correction
Output Specifications
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Rated Continuous Output Power: 1100W
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Energy Efficiency: ≥92% efficiency at 50% load
Built-In Protection Circuits
Overvoltage protection, overcurrent protection, short-circuit protection, reverse current protection, overtemperature automatic shutdown
Bi-color front-panel LED indicator for normal operation and fault status
Typical Weight
Approx. 1.35 kg (2.98 lbs)
Environmental Operating Parameters
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Operating Temperature: 0°C to 40°C (32°F – 104°F)
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Storage Temperature: -40°C to 70°C (-40°F – 158°F)
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Relative Humidity: 5% – 90%, non-condensing
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Maximum operating altitude: 3,000 meters (9,842 ft)
4. Supported Functional Capabilities
High Availability Operation
Full OIR support; defective power supply replacement without firewall service outage
Supports dual power load-sharing and 1+1 redundant configuration for maximum uptime
Power Monitoring & Management
Real-time voltage, current and temperature telemetry accessible via appliance CLI and Firepower Management Center (FMC)
Fault notifications via console logs, Syslog and SNMP v2c/v3 traps
Electronic serial number readable for asset lifecycle inventory tracking
Intelligent Thermal Control
Internal variable-speed cooling fan dynamically adjusts rotational speed based on internal module temperature to balance cooling performance and acoustic noise levels
5. Typical Enterprise Deployment Scenarios
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Primary or redundant AC power source for Firepower 4100 next-generation firewalls deployed in enterprise data centers
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Internet edge and data center security boundary running FTD threat prevention, IPS and VPN workloads
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Spare inventory for hardware lifecycle maintenance and emergency replacement of Firepower 4100 security fleets
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Colocation and multi-tenant data center security infrastructure with standard AC power distribution
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Branch and regional headquarters high-performance firewall deployments requiring power redundancy
6. Regulatory & Compliance Certifications
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Safety Standards: UL 60950-1, IEC/EN 60950-1, CSA C22.2 No.60950-1
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EMC Compliance: CE Mark, FCC Part 15 Class A, ICES-003 Class A, VCCI Class A
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Environmental: RoHS 2.0 compliant, WEEE directive compliant
7. Standard Factory Package Contents
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Cisco FPR4K-PWR-AC (FPR4K-PWR-AC-1100=) 1100W AC Power Supply Module
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Hardware installation instruction sheet
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Safety and regulatory documentation
AC power cord sold separately
End-of-Life Status
Firepower 4100 series appliances have reached Cisco End-of-Sale. Spare power supply modules remain available via authorized spare channels and second-hand markets. Recommended migration platform: Cisco Secure Firewall 4200 Series.
UNSPSC Classification Code
43222617 – Cisco FPR4K-PWR-AC hot-swappable 1100W high-efficiency AC power supply for Firepower 4100 next-generation security appliances, supporting OIR and 1+1 redundant power deployment for data center and enterprise network security infrastructure.
Hardware Warranty
Original Cisco factory spare units carry limited manufacturer warranty. Refurbished hardware follows reseller commercial warranty agreements.
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