Vertiv · Power Systems & Batteries

Vertiv NetSure DC power systems and rectifier modules

Vertiv (formerly Emerson Network Power) rectifier platforms sit behind a large share of the DC power installed at telecom sites across the Gulf and East Africa, usually specified alongside whichever radio vendor built the site but sourced independently once the warranty runs out. The enquiries we see are almost always a failed rectifier module needing a matching replacement, or a system controller that has stopped reporting. This page lists the NetSure 701, 731, 801 and 502 systems and their R48 rectifier modules and controllers.

How to read these part numbers

NetSure model numbers identify the system class — 701 and 801 are large-capacity systems for bigger sites, 731 is a compact 4U shelf, 502 is a smaller integrated system. Rectifier modules are coded R48-<wattage><suffix>, so R48-3500e3 is a 48V, 3500W module; a trailing e or E denotes the higher-efficiency eSure line, and the numeric suffix (2, 3, 4) marks the generation — later generations are not always physically interchangeable with earlier ones in the same shelf, so match generation as well as wattage.

Equipment reference

13 of 13 items

M221S

Also: M830B

Model
NetSure 731 A41 controller (standard)
Compatibility
Vertiv NetSure 731
Band / Interface
Standard control unit; M830B is the advanced variant
Condition
On enquiry
Lead Time
On enquiry

M830D

Model
NetSure system controller
Compatibility
Vertiv NetSure 701 / 801
Band / Interface
System controller module, 320x240 TFT colour LCD
Condition
On enquiry
Lead Time
On enquiry

NetSure 502 power system

Model
On enquiry
Compatibility
Vertiv NetSure 502
Band / Interface
48V DC power system, 85-300VAC input, up to 600A distribution, R48-2000e rectifier at 96.5% efficiency
Condition
On enquiry
Lead Time
On enquiry

NetSure 701 A02/A03 power system

Model
On enquiry
Compatibility
Vertiv NetSure 701
Band / Interface
48V DC power system, -42 to -58V output, up to 84kW max, 2350x600x600mm cabinet
Condition
On enquiry
Lead Time
On enquiry

NetSure 731 A41 power system

Model
On enquiry
Compatibility
Vertiv NetSure 731
Band / Interface
48V DC power system, up to 240A output, 4 rectifier slots, 19-inch 4U
Condition
On enquiry
Lead Time
On enquiry

NetSure 801 AG1-T1 power system

Model
On enquiry
Compatibility
Vertiv NetSure 801
Band / Interface
48V large-capacity DC power system, 260-530VAC 3-phase input, up to 278.4kW system capacity
Condition
On enquiry
Lead Time
On enquiry

R48-2900U

Model
NetSure 701 rectifier module
Compatibility
Vertiv NetSure 701
Band / Interface
48V rectifier, 2900W, 60A max, 92% efficiency
Condition
On enquiry
Lead Time
On enquiry

R48-3000e3

Model
NetSure 731 A41 rectifier module
Compatibility
Vertiv NetSure 731
Band / Interface
48V, 3000W, 62.5A output, 95.5% efficiency
Condition
On enquiry
Lead Time
On enquiry

R48-3500e

Model
NetSure 701 rectifier module (eSure)
Compatibility
Vertiv NetSure 701
Band / Interface
48V rectifier, 3500W, 73A max, 96.3% efficiency
Condition
On enquiry
Lead Time
On enquiry

R48-3500e3

Model
NetSure 731 A41 rectifier module
Compatibility
Vertiv NetSure 731
Band / Interface
48V, 3500W, 72.9A output, 96.3% efficiency
Condition
On enquiry
Lead Time
On enquiry

R48-3500E4

Model
NetSure 731 A41 rectifier module
Compatibility
Vertiv NetSure 731
Band / Interface
48V, 3500W, 72.9A output, 98% efficiency
Condition
On enquiry
Lead Time
On enquiry

R48-5800A

Model
NetSure 801 rectifier module
Compatibility
Vertiv NetSure 801
Band / Interface
48V, 5.8kW, 120A max, 92% efficiency
Condition
On enquiry
Lead Time
On enquiry

R48-5800e

Model
NetSure 801 rectifier module (eSure)
Compatibility
Vertiv NetSure 801
Band / Interface
48V, 5.8kW, 120A max, 96% efficiency
Condition
On enquiry
Lead Time
On enquiry

Cannot find a part number? Send us the number and we will identify and price it.

Ordering notes

Give the exact NetSure system model and shelf generation, not just '48V rectifier', since Vertiv has revised the R48 module family several times and older shelves do not always accept the newest module generation. State the output wattage you need and whether a controller (M221S, M830B, M830D) is included or required separately. Condition is stated per quotation — new, new-surplus or refurbished — and where a destination does not admit used network equipment (Algeria is the usual example) we quote new. Hardware only: software licensing remains between the buyer and the manufacturer. Destination type approval and import permits (CST/SABER, TDRA, ICASA, CA, CMC, ARPCE) are the buyer's responsibility and we will say so on the quotation.

Lifecycle and availability

The NetSure 731 A41 and 801 AG1 platforms remain current production; older 701 A02/A03 systems and early-generation R48 modules are supplied new-surplus or refurbished. Vertiv's eSure-suffixed modules are the current high-efficiency generation and are the ones we source new; earlier non-e modules are surplus stock only.

Equipment condition

New — factory-sealed, supplied through the manufacturer's authorised channel or an authorised distributor, with full manufacturer warranty.

New surplus — unused factory stock, original packaging where available, sourced from decommissioned projects or distributor inventory. Manufacturer warranty may have lapsed; CRS PLUS warranty applies.

Refurbished / tested — previously deployed equipment, cleaned, firmware-checked and functionally tested against the manufacturer's specification before shipment. CRS PLUS warranty applies.

Condition is confirmed in writing on every quotation before you commit to an order.

Warranty

Warranty terms vary by item, by condition and by the supplier the equipment is sourced from. They are stated in writing on the quotation, per line item, before you commit to an order.

Where equipment is supplied new through an authorised channel, the manufacturer's warranty applies and is passed to you.

Send us the part numbers you need and we will confirm warranty terms alongside availability, condition, lead time and price.

Frequently asked questions

Usually yes within the same shelf generation, since Vertiv keeps the physical form factor consistent within a NetSure family — but confirm your shelf model and controller firmware with us before ordering, since older controllers sometimes cap the module wattage they will report correctly.

Related pages

Manufacturer names, product names and part numbers are the property of their respective owners and are used here for identification purposes only. CRS PLUS sources these products through its verified supplier network and is not an authorised distributor or agent for any manufacturer listed.

This catalogue is compiled from our supplier network's available inventory and from manufacturer product documentation, and is reviewed monthly. Listing does not indicate stock held by CRS PLUS — availability, condition and lead time are confirmed per enquiry. Last reviewed: 22 August 2026.

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