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PWR-125W-AC
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Cisco PWR-125W-AC 125W AC Power Supply for ISR 1100
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Name:
PWR-125W-AC
- Description:
- Cisco PWR-125W-AC 125W AC Power Supply for ISR 1100
- Rating:
- (0)
Added to cart times recently
- Availability:
Ready to Ship
- Brand:
- Cisco
- GTIN:
- 5704174459071
- Condition:
Certified Refurbished
Professionally inspected, bench-tested, and firmware-verified, with configurations wiped. Restored to full working order and backed by our warranty.
- Warranty:
upto3Years Warranty- Price:
$91.86
Quantity:
1
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External PoE Power for ISR Routers
PWR-125W-AC is a 125W AC external power supply for ISR 1100 routers with PoE-capable C111x power input. The Cisco ISR 1100 power supply feeds the router through a locking 4-pin DC connector and supplies 12V system power plus -53.5V PoE power. It fits Cisco 1100 Series ISR chassis that take the 125W AC Power Adapter. The PoE4 build supports 4 PoE ports or 2 PoE+ ports on 1100-8P routers. The adapter is not a plug-in switch power supply and has no chassis airflow direction to match. Current 1100-8P PoE builds moved to PWR-150W-AC after May 2018; that unit adds higher 12V output for newer builds.
PWR-125W-AC price is $91.86. PWR-125W-AC is in stock and available for free next-day delivery. (terms applied)
Request bulk order quote for PWR-125W-AC for additional pricing. Browse the full Cisco ISR 1000 Power Supplies series or explore all Cisco products.
Technical Details
100-240 VAC input at 2A and 50-60 Hz lets the adapter run from standard branch circuits without a low-line wattage reduction. 12VDC at 3.5A feeds the router system rail, and -53.5VDC at 1.55A feeds the PoE rail for the internal PoE module. PWR-125W-AC uses the ISR 1100 external AC-to-DC adapter format, not an internal module bay. The router-side 4-pin connector is rated for 5A and has a latch that prevents accidental disengagement. The 0°C to 40°C operating range matches the ISR 1100 chassis range, so rack spacing and ambient room temperature matter more than airflow direction. The host must be turned off and disconnected before internal module or cover work.
Ordering
Order PWR-125W-AC as new sealed or certified refurbished for a failed 125W ISR 1100 adapter or a post-support PoE4 spare. Certified refurbished units are inspected and bench-tested in a compatible host or on a load tester, with output voltage verified at the output connector. Cisco service ended on 31 October 2024. New units carry up to a 3-year extended warranty, and certified refurbished units carry up to 1 year. Returns are 30 days on every condition; terms apply. UK, EU, US and MEA stock supports RMA with advance replacement, PO accepted and Net-30 for government.
Key Specs
| Key Specs | Key Spec Values |
|---|---|
Rated Output | 125W; 12V and -53.5V outputs |
Input | AC, 100-240V, 50-60Hz |
Fits | ISR 1100 |
Lifecycle Status | End of support was 31 October 2024 |
Replacement PID | PWR-150W-AC for current PoE builds |
PWR-125W-AC Specifications
- Manufacturer Part Number
- PWR-125W-AC
- Brand
- Cisco
- Form Factor
- External Unit
- Product Line
- ISR
- Compatible With
- ISR 1100
- Wattage
- 125W
- Input Type
- AC
- Input Voltage Range
- 100-240V AC
- Input Frequency
- 50-60 Hz
- Max Input Current
- 2A
- Output Rating
- 12VDC at 3.5A; -53.5VDC at 1.55A
- PoE Support
- PoE
- Redundancy Support
- Non-Redundant
- Operating Temperature
- 0°C to 40°C
- Manufacturer Warranty
- Cisco service ended 31 October 2024
Best For
Post-Support Spares
Your ISR 1100 PoE4 estate is past the adapter support date, and the failed hardware label reads PWR-125W-AC or PWR-125W-AC=. Specify certified refurbished for like-for-like sparing, and match the 125W AC adapter to the 4-pin ISR 1100 power input before the PO.
PoE4 Adapter Replacement
A 1100-8P router with the PoE4 option needs the dual-output adapter that feeds 12V system power and -53.5V PoE power. Order this supply for older 125W PoE4 builds, and check the chassis history if the site moved to 150W adapters after May 2018.
Branch Spare Pool
A mixed branch pool with older ISR 1100 routers needs spares separated by adapter wattage. Keep the 125W unit for PoE4 replacements, keep PWR-66W-AC-V2 for non-PoE units, and label each spare by output voltage before it goes to the field.
Not Suitable If
C1101-4P power replacement
C1101-4P and C1101-4PLTEPWx routers use a 30W AC power supply; order PWR-30W-AC for that requirement.
Current 1100-8P PoE builds
Newer 1100-8P PoE builds moved from the 125W supply after May 2018; order PWR-150W-AC for that build.
Non-PoE 1100 units
Non-PoE ISR 1100 units use a single-output 66W 12V supply; order PWR-66W-AC-V2 for that replacement.
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Related Products
Product Comparison Table 
| PWR-125W-AC |  PWR-115W-AC |  PWR-2811-AC |  PWR-4220-AC |  PWR-4330-AC | |
|---|---|---|---|---|---|
| Form Factor | External Unit | ATX | Internal Module | External Unit | Internal Module |
| Operating Temperature | 0°C to 40°C | 40°C | 0°C to 40°C | 0°C to 40°C | 0°C to 40°C |
Compliance & Warranty
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Every unit is authentic, sourced through trusted and authorised channels, and serial-verified on request. Genuine networking and IT hardware, guaranteed, or your money back.
Up to 3-Year Warranty Coverage
New products are backed by up to 3 years of extended warranty, and certified refurbished units by up to 90 days, for dependable protection on every order. The exact term is confirmed on your quote, order confirmation and invoice.
Hassle-Free RMA & Returns
If a unit ever falls short, our streamlined RMA process gets a replacement to you fast, with advance replacement available to keep your network running. No jargon, no runaround.
Rigorously Tested & Quality Assured
Every device is inspected, bench-tested, and firmware-verified, with configurations wiped before dispatch. Additional testing can be arranged to confirm full working condition on request.
Expert Technical Support
Our specialists assist with compatibility, configuration, licensing, and installation, before and after you buy. Real hardware expertise, whenever you need it.
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Questions & Answers
What is PWR-125W-AC?
PWR-125W-AC is the Power Supply 125 Watt AC for ISR 1100 external AC-to-DC service. The spare form is PWR-125W-AC=, described as Power Supply 125 Watt AC for POE4 Module. The unit has 100-240 VAC input and dual 12V and -53.5V outputs.
What routers fit PWR-125W-AC?
PWR-125W-AC fits ISR 1100 routers that take the 125W AC Power Adapter. The 4-pin connector is shared by C111x Series power input for 12V system power and -54V PoE power. C1101-4P and C1101-4PLTEPWx units use a 30W AC supply instead.
What power supply does a Cisco ISR 1100 use?
ISR 1100 routers use different external power supplies by PoE build. Non-PoE units use PWR-66W-AC-V2, lower PoE builds use PWR-115W-AC, and older 1100-8P PoE4 builds use PWR-125W-AC. Current 1100-8P PoE builds moved to PWR-150W-AC after May 2018.
What are PWR-125W-AC specs?
PWR-125W-AC is a 125W AC external power supply with 100-240 VAC input at 2A and 50-60 Hz. Output is 12VDC at 3.5A and -53.5VDC at 1.55A. Hold-up time, dimensions, weight, efficiency tier and BTU/hr are N/A for this page.
Does PWR-125W-AC support PoE?
Yes, PWR-125W-AC supports PoE on older ISR 1100 PoE4 builds. The adapter provides -53.5VDC at 1.55A for the PoE rail and supports 4 PoE ports or 2 PoE+ ports on 1100-8P PoE4 configurations. Match the PoE4 hardware before replacing the adapter.
Is PWR-125W-AC hot-swappable?
PWR-125W-AC is an external power adapter, not a hot-swap plug-in module. The ISR 1100 chassis must be turned off and disconnected from its power supply before cover removal, internal PoE module work or field replacement. Use this unit as an offline adapter replacement.
What is the difference between PWR-125W-AC and PWR-150W-AC?
PWR-150W-AC is the newer 150W adapter used for current ISR 1100 PoE builds after May 2018. PWR-125W-AC fits older 125W PoE4 builds with 12VDC at 3.5A and -53.5VDC at 1.55A output. Choose by the chassis build and failed adapter label.
What is the difference between PWR-125W-AC and PWR-115W-AC?
PWR-125W-AC is the 125W adapter tied to 1100-8P PoE4 builds, while PWR-115W-AC is the 115W adapter used for lower ISR 1100 PoE builds. PWR-115W-AC outputs 12V at 4.6A and -53.5V at 1.12A. Choose the adapter that matches the router's PoE option.
What is the difference between PWR-125W-AC and PWR-66W-AC-V2?
PWR-125W-AC has dual 12V and -53.5V output for ISR 1100 PoE use. PWR-66W-AC-V2 is a 66W single-output 12V adapter for non-PoE units. Order PWR-66W-AC-V2 for a non-PoE replacement, and keep the 125W unit for PoE4 builds.
What is the PWR-125W-AC end-of-sale status?
Cisco stopped selling PWR-125W-AC on 29 October 2019, and Cisco service ended on 31 October 2024. The affected spare form is PWR-125W-AC=. The end-of-sale product entry has no Cisco replacement available for the Cisco 3G and Power Accessories group.
What warranty does ORM Systems offer for PWR-125W-AC?
ORM Systems offers PWR-125W-AC as new sealed or certified refurbished. New units carry up to a 3-year extended warranty, and certified refurbished units carry up to 1 year. Cisco service ended on 31 October 2024, so ORM's warranty is the cover that applies. Returns are 30 days; terms apply.