PWR-2921-51-DC= Cisco 60V Internal Power Supply at discount

PWR‑2921‑51‑DC Specifications

Cisco DC Power Supply Module for ISR 2900 Series (2921 / 2951)

Manufacturer: Cisco
Manufacturer Model: PWR‑2921‑51‑DC
Product Line: Cisco Router Power Supplies
Product Series: DC Input, Internal Module
Product Type: Internal DC Power Supply Module
Product Name: Cisco DC Power Supply for ISR 2921/2951

KEY FEATURES:
Input Voltage Range: 24 – 60 V DC (negative or positive autoranging)
Designed for compatibility with Cisco ISR 2921 and Cisco ISR 2951 routers
High‑efficiency DC power conversion (~88%)
Hot‑swap support: Yes (field‑replaceable internal module)
Form Factor: Internal rack/chassis power supply module

PERFORMANCE:
Typical Input Current: ~6 A at 24 V input, ~3 A at 60 V input
Power Capacity: ~250 W output
Efficiency: Approx. 85%

ENVIRONMENTAL & RELIABILITY:
Operating Temperature: 0 °C to 40 °C (32 °F to 104 °F)
Storage Temperature: –40 °C to 70 °C (–40 °F to 158 °F)
MTBF: ~300,000 hours
Designed for continuous (24×7) enterprise/industrial use

PHYSICAL:
Form Factor: Internal, rack/chassis module for Cisco ISR 2921/2951
Dimensions: ~1.6 in × 8.6 in × 8.9 in (H×W×D) approx.
Weight: ~1.2 kg (~2.6 lbs)