Cisco N9K-PAC-1200W Full Official Product Description
1. Part Number & Naming Definition
Official Full Name
Cisco Nexus 9000 Series 1200W AC Hot-Swappable Power Supply, Port-Side Intake (PI)
SKU:N9K-PAC-1200W
Airflow Variant Reference:
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N9K-PAC-1200W: Port-Side Intake (PI, burgundy label)
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N9K-PAC-1200W-B: Port-Side Exhaust (PE, blue label)
Naming Breakdown
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N9K: Cisco Nexus 9000 data center switch platform
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PAC: Alternating Current Power Supply
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1200W: Maximum 1200-watt output capacity
Core Product Positioning
The Cisco N9K-PAC-1200W is a hot-swappable 1200-watt AC power supply module designed for fixed-form-factor Cisco Nexus 9300 Series leaf/spine switches operating in NX-OS or ACI fabric mode. This port-side intake (PI) power unit delivers high-efficiency stable DC power to switch ASICs, optics, fan trays and onboard circuits. It supports redundant power deployment for non-stop data center operation and matches cold/hot aisle rack airflow design standards.
2. Hardware Compatibility
Supported Chassis
N9K-C9332PQ, N9K-C9336PQ, N9K-C93120TX, N9K-C93128TX and other compatible 2RU / 3RU Nexus 9300 fixed switches
Critical requirement: Power supply airflow direction must match installed fan tray airflow to avoid thermal airflow conflict
Supported Operating System
Cisco NX-OS and ACI APIC firmware for Nexus 9000 platform
Unsupported Hardware
Nexus 9500 modular chassis, Nexus 3000 series, Catalyst switches, NXA-series newer generation power supplies
3. Electrical & Physical Specifications
Form Factor
Hot-swappable pluggable power supply module; front-load chassis insertion with integrated extraction latch
Airflow Direction
Port-Side Intake (PI): Air enters port side, exhausts rear of chassis (burgundy color marking)
AC Input Parameters
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Input Voltage: 100–240 VAC universal
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Input Frequency: 50 / 60 Hz
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Power Factor Correction: Active PFC
Output Specifications
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Rated Output Power: 1200W maximum
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Main Output: 12 VDC
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Efficiency: 80 PLUS Platinum certified high efficiency
Built-In Functions
Overvoltage protection, overcurrent protection, overtemperature shutdown, short-circuit protection
Real-time power monitoring, fault alarm and status LED indicator
Typical Weight
Approx. 1.4 kg (3.08 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 – 167°F)
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Relative Humidity: 5% – 90%, non-condensing
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Maximum operating altitude: 4,000 m (13,123 ft)
4. Supported Functional Capabilities
High Availability Operation
Hot-swappable design; power supply replacement without switch power cycle or traffic interruption
Supports 1+1 redundant power configuration for chassis power fault tolerance
Power Monitoring & Management
Continuous telemetry reporting via NX-OSshow environmentcommand
Status LED visual indication; fault notifications via Syslog, SNMP v2c/v3 traps
Supports asset inventory with readable electronic serial number
Energy Optimization
Platinum high efficiency reduces power consumption and heat generation under normal load
Adaptive internal fan speed control based on module internal temperature
5. Typical Enterprise Deployment Scenarios
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Primary or redundant power source for Nexus 9300 leaf and spine switches in enterprise data centers
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Cold aisle / hot aisle rack infrastructure requiring Port-Side Intake airflow power modules
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Spare inventory for hardware lifecycle maintenance of Nexus 9300 switching fleets
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ACI data center fabric deployment for leaf/spine switch power redundancy
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Colocation and cloud edge switching infrastructure requiring resilient AC power delivery
6. Regulatory & Compliance Certifications
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Safety: UL 60950-1, IEC/EN 60950-1, CSA C22.2 No.60950-1
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EMC: 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 N9K-PAC-1200W 1200W AC Port-Side Intake Power Supply Module
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Hardware installation guide
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Safety and regulatory documentation
AC power cord sold separately
End-of-Life Status
Depends on corresponding Nexus 9300 switch lifecycle. Many early Nexus 9300 hardware platforms have reached Cisco End-of-Sale. Spare power supplies are available via authorized spare channels and second-hand markets. Migration option: newer NXA-series power modules for latest Nexus 9300-GX platforms.
UNSPSC Classification Code
43222617 – Cisco N9K-PAC-1200W 1200W hot-swappable AC power supply (port-side intake) for Nexus 9300 Series data center switches, providing platinum-grade efficient power delivery, redundant power support and in-service replacement for enterprise and ACI fabric switching infrastructure.
Hardware Warranty
Original Cisco factory spare units carry limited manufacturer warranty. Refurbished modules follow reseller commercial warranty agreements.
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