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Juniper

Juniper JPSU-550-C-VDC-AFO | EX4400 550W VDC Power Supply, Front-to-Back Airflow

JPSU-550-C-VDC-AFO

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Description

This 550W variable DC power supply module is built for the Juniper EX4400-48F-S fibre access and aggregation switch. It suits sites that supply high-voltage DC, such as telecom and industrial DC-powered facilities, and it can be installed as a redundant pair for continuous operation.

The unit accepts a wide 120 to 310 VDC input at a 7 A rated current and delivers 550W of output power. It is the front-to-back airflow (AFO) version, identified by the AIR OUT label and orange handle, with its own internal fan for independent cooling. Fitting two modules gives fully redundant, load-sharing operation, and each is a hot-insertable, hot-removable field replaceable unit with an OUT.OK status LED.

It is supported only on the EX4400-48F-S model and should be used with front-to-back airflow fan modules. AC, standard DC and variable DC power supplies, or units with a different airflow direction, must not be mixed in the same chassis. No licence is needed for the power supply itself.

Enquire with XS Network Tech for new or used pricing and availability.

Features

- Dedicated power supply for the EX4400-48F-S switch model
- Wide-range 120 to 310 VDC input for high-voltage DC environments
- Fully redundant, load-sharing operation when two modules are installed
- Hot-swappable, so it can be replaced without powering off the switch
- Built-in fan provides independent internal cooling
- Front-to-back airflow, identified by the orange handle and AIR OUT label

Warranty

All products sold by XS Network Tech include a 12-month warranty on both new and used items. Our in-house technical team thoroughly tests used hardware prior to sale to ensure enterprise-grade reliability.

All technical data should be verified on the manufacturer data sheets.

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Technical Specifications

FAQs

Technical Specifications

- Model number: JPSU-550-C-VDC-AFO
- Power supply type: 550W variable DC (VDC) PSU
- Output power: 550W
- DC input voltage: 120 to 310 VDC rated operating range
- DC input current rating: 7 A
- Airflow direction: Front-to-back (AFO), AIR OUT label, orange handle
- Cooling: Built-in internal fan
- Status LED: OUT.OK
- Installed per chassis: 1 minimum, 2 maximum
- Redundancy: Fully redundant, load-sharing with a second PSU
- Serviceability: Hot-insertable and hot-removable FRU
- Weight: 1.65 lb (0.75 kg)
- Supported switch model: EX4400-48F-S
- Power cable: HVDC, 25 A, 400 V, 3 m plug to bare wire, e.g. CBL-EX-PWR-SDG-INT

FAQs

Q: Which switch does this power supply fit?
A: It is supported only on the Juniper EX4400-48F-S, which has 12 x 10GbE SFP+ and 36 x 1GbE SFP fibre ports.

Q: What input voltage does it need?
A: It runs from a 120 to 310 VDC variable DC supply at a 7 A rated input current and delivers 550W of output power. It is not an AC or -48 V DC unit.

Q: Can I mix it with AC or standard DC power supplies?
A: No. AC, DC and variable DC power supplies must not be mixed in the same chassis, and neither should units with different airflow directions.

Q: Which fan modules should I use with it?
A: Use front-to-back (AFO) airflow fan modules so the airflow direction matches this power supply.

Q: Does it need a licence?
A: No licence is needed for the power supply itself. Switch software features are licensed separately on the host EX4400 switch.

Q: Which power cable does it use?
A: Juniper specifies an HVDC cable rated 25 A, 400 V, 3 m, with a plug at one end and bare wire at the other, such as CBL-EX-PWR-SDG-INT. Country-specific models are available.

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