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Technical Data Sheet
PartsTable / POWER_SUPPLY / 81Y8277
81Y8277 ✓ Verified by PartsTable
JUNIPER · POWER_SUPPLY · HOTPLUG_PSU
WHAT YOU NEED TO KNOW
Hotplug PSUs are very sturdy — rarely see warranty claims. Safe bet. Always make sure they're tested. Key checks: Make sure tested.
PRODUCT OVERVIEW

Juniper EX4500 1200W AC power supply back to front air. Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels. Verify compatibility with your specific system configuration before ordering.

WHERE IT FITS
POWER_SUPPLY→ HOTPLUG_PSU→ 81Y8277
SPECIFICATIONS
Part Number81Y8277
ManufacturerJUNIPER
Wattage1200W
COMPONENT DIAGRAM
PULL TAB AIRFLOW 1200W PLATINUM 100-240V~ 50/60Hz JUNIPER BACKPLANE CONN ~200 mm HOT-PLUG POWER SUPPLY | 1200W | Platinum AC input 100-240V | Redundant pair required | Match wattage in same chassis TITLE PSU 1200W PN 81Y8277 MFR JUNIPER Platinum
KEY FEATURES
•
1200W Power Rating
TYPICAL APPLICATIONS
  • Server power supply replacement (failed or degraded)
  • Redundant power upgrade for high-availability
  • Power capacity upgrade for GPU or expansion configurations
  • Hot-swap power maintenance in production environments
  • Spare inventory for break-fix operations
VERIFIED SUBSTITUTES & CROSS-REFERENCES 1
81Y8286Compatible
IBM Switch PSU 1200W AC Back to Front Airflow for Juniper EX4500 - Option
compatible
LIFECYCLE
StatusUNKNOWN
Availability—
RoHS CompliantEAR99ESD SensitiveNot HAZMAT
THIS PART SUBSTITUTES FOR 1
81Y8286SUBSTITUTE
IBM Switch PSU 1200W AC Back to Front Airflow for Juniper EX4500 - FRU
IBM
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FREQUENTLY ASKED QUESTIONS
What is 81Y8277?
81Y8277 is a Juniper EX4500 1200W AC power supply back to front air manufactured by JUNIPER. It is classified as a POWER_SUPPLY (HOTPLUG_PSU).
What parts can replace 81Y8277?
There is 1 known substitute for 81Y8277: 81Y8286. Substitute compatibility should be verified for your specific system.
Is 81Y8277 still available?
81Y8277 is currently Unknown.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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Last verified: July 2026