SAGEMCOM 252720938AB – AC/DC Power Adapter for Broadband Gateways and CPE

The SAGEMCOM 252720938AB is an OEM-grade external power adapter typically supplied with Sagemcom F@ST-series gateways, modems, and similar CPE. From my experience, this unit focuses on stable 12 V DC output, low ripple, and the usual multi-protection design you want when equipment uptime actually matters. If you maintain mixed fleets of Sagemcom gateways, this is the safe, straightforward replacement that keeps swaps under five minutes with no configuration required.

Our Order Placement Process and Guarantees

• – Warranty period: 365 days

• – Delivery time: 1 week for in-stock items; no more than one month at the latest

• – Payment: 50% advance payment; full payment prior to delivery

– Express delivery options: FedEx, UPS, DHL

Key Features

• OEM compatibility – Designed for Sagemcom CPE; minimizes connector/polarity mismatches and fits typical gateway power specs.
• Stable 12 V DC output – Regulated supply helps reduce reboot loops and packet loss caused by undervoltage, especially under peak Wi‑Fi load.
• Multi-protection design – Over‑voltage, over‑current, and short‑circuit protections to protect both the adapter and the gateway.
• Global input range – 100–240 V AC, 50/60 Hz; easy to deploy across sites without changing the PSU model.
• Low noise, indoor-rated – Suited for office/network cabinets where thermal and electrical noise can be a problem.
• Field-friendly form factor – Quick swap in racks and small cabinets; no firmware or settings involved.
• Accessory support – We can supply matching IEC C7 power cords and DC plug adapters (5.5×2.1 to 5.5×2.5) when needed.

Technical Specifications

You might notice slight variations across regional revisions. If you’re replacing a failed unit, match the output voltage/current and connector listed on your device label. Reach out if you’d like us to double‑check by model/serial photo.

Application Fields

• Broadband CPE: Sagemcom F@ST series gateways for GPON/EPON/xDSL and DOCSIS environments.
• Service provider field maintenance and RMA stock; quick restore for customer sites.
• Enterprise edge labs and PoC test benches that standardize on Sagemcom CPE.
• MDU/MTU wiring closets where compact, reliable PSUs reduce truck rolls.

Advantages & Value

• Reliability – Clean, regulated output that, in many cases, stops random reboots during Wi‑Fi spikes or USB device draws.
• Compatibility – Connector and polarity match typical Sagemcom gateways, so swaps are fast and predictable.
• Cost control – Extends equipment life; cheaper than replacing the entire gateway for a power fault.
• Supported logistics – Clear lead times, proper export HS code, and multiple courier options simplify rollouts.

Installation & Maintenance

• Environment – Install indoors, in a ventilated space. Avoid enclosed, unventilated boxes; leave a few centimeters around the adapter for heat dissipation.
• Power and wiring – Confirm the device label for 12 V DC and required current. Ensure center‑positive barrel polarity before powering. Keep cable runs tidy to prevent strain on the jack.
• Safety – Connect the AC side to a surge‑protected outlet when possible. Do not cover the adapter during operation. Unplug before servicing the gateway.
• Routine checks – Inspect connectors quarterly for looseness, discoloration, or heat marks. Light dust cleaning goes a long way. Replace the adapter if audible buzzing or excessive heat appears.

Quality & Certifications

• Safety and compliance: CE, UL, RoHS (typical for this adapter class; specific marks vary by batch/region).
• Manufacturer quality system: ISO 9001 for production processes.
• Warranty: 365 days from shipment.

One thing I appreciate is how forgiving this adapter seems to be with line power fluctuations. A network integrator told me they replaced around 30 units at a hostel upgrade—no DOA, and the intermittent reboot complaints dropped to zero. If you’d like, share a photo of your gateway’s rating label and we’ll confirm the exact connector and current rating before shipping.