DIAMOND Fusion Box — Rigid 1U Splice Boxes
Permanently rack-mounted 1U splice boxes for fixed installations. Nine variants combining E-2000® Simplex (SX) and CompactRJ (Duplex) options, with or without factory-terminated pigtails. The Fusion Box is the right choice when the installation is set-and-forget and maximum port density matters more than service access.
Fixed or pull-out: three points to settle before ordering
A fixed box is cheaper in installation space and in handling — but it assumes that access from the front is enough.
Front access only
Where there is no space behind the rack, the box has to be operable from the front. That decides between fixed and pull-out.
Fixed also means: nothing shifts
A fixed tray has no moving parts. What has been laid once stays where it is — even after the tenth intervention in the rack.
E-2000® is a given
If the installation runs on E-2000, only the form factor and the port count are left to decide — the connector interface is already fixed.
What Sets the Fusion Box Apart
The Fusion Box sits rigidly in the rack — no sliding mechanism, no movable parts. That makes it lighter, less expensive and more space-efficient than the sliding Future Box. It pays off in environments where:
- Installation is permanent — set and not touched for years
- Rack density is critical — every U counts
- Splicing is done off-site — pigtails arrive pre-terminated and tested
- Budget pressure rules out the Future Box’s sliding mechanism
The Nine Variants
Fusion Box variants combine three connector options with three pigtail-termination states, giving nine configurations:
| Connector | Description | Typical Use |
|---|---|---|
| E-2000® SX (Simplex) | One coupling per slot, single-fibre | Standard FTTH, telecom backbones |
| E-2000® CompactRJ (Duplex) | Two couplings per slot, duplex pairs | Data centre patching, high-density |
| Mixed configurations | Combination of SX and CompactRJ in one chassis | Mixed-purpose distribution racks |
Each connector option is available in three states: empty (couplings only, customer pre-terminates), partially populated (some pigtails factory-terminated), or fully populated (all pigtails factory-terminated, ready to splice on incoming fibres).
Found your variant?
Request it with its article number (G7G1…) — we confirm the configuration and send you a quote.
Factory pre-terminated pigtails
The pigtails are terminated and measured in the factory, not on the building site.
Connector System: E-2000® Standard
All Fusion Box variants use DIAMOND E-2000® couplings in standard colour-coded geometry:
- Singlemode APC (green) — recommended default for FTTH and high-availability backbones
- Singlemode PC (blue) — for legacy infrastructure
- Multimode (OM3, OM4, 62.5 μm) — for campus and in-building networks
Active Core Alignment (ACA) technology delivers typical insertion loss ≤ 0.1 dB. The push-pull latch with spring-loaded shutter prevents end-face contamination — critical in dust-prone environments.
Factory-Terminated Pigtails
When ordered with factory-terminated pigtails, each fibre arrives ready to splice on the incoming cable side. The factory side is pre-mated to the E-2000® coupling, measured, and the test certificate is available on request.
This pre-termination approach is the typical workflow for high-volume installations: the installer’s onsite work reduces to splice-only — no field connectorisation, no field polishing, no field measurement.
Four reasons to source the Fusion Box from us
Authorised distribution partner of DIAMOND SA
Swiss precision from a single source — E-2000® with typ. ≤ 0.1 dB insertion loss and a spring-loaded laser protection shutter.
Nine versions in a single rack unit
The Fusion Box covers the common port counts in one U — the choice is made through the population, not through the height.
Data sheet and part number for every version
Every available version is documented. The enquiry goes out with the part number, not with a description.
One connector system across the entire line
The same E-2000® connection level in every form factor: consistent handling, one spare-parts profile, no system breaks in the installed base.
Calculate and configure first, then enquire
Three tools with real part numbers — check the optical budget and put your configuration together live in 3D.
Attenuation budget calculator
Add up connectors, splices and fibre lengths and check the total attenuation against the budget — before the OTDR acceptance test measures it.
DIAMOND configurator (3D)
Configure Future and Fusion Box with E-2000 live — with a real part number for each configuration, ready for your enquiry.
Subrack configurator
Populate a 19″ subrack slot by slot with splice and front modules — including the bill of materials for your quotation.
Quality Assurance
Every Fusion Box ships with individual pigtail measurement — not sample inspection. Per-pigtail documentation includes end-face quality, tilt angle (≤ 0.4°), concentricity (≤ 0.25 μm) and final inspection mark. Certificates on request.
Available Through Fiber Products
Following the DIAMOND press release of 27 April 2026, Fiber Products GmbH is the central supplier for the DIAMOND 19″ enclosure technology, including the Fusion Box. DIAMOND continues to manufacture all connector components in Losone; Fiber Products handles DACH supply, configuration and F4P-built custom alternatives.
- All nine Fusion Box variants (connector × termination state combinations)
- Complete E-2000® coupling, pigtail and adapter range
- F4P-built alternatives with custom configurations — Manufacturer warranty
- German logistics with fast DACH delivery
- Configuration advice via our request form
Datasheets for download
Everything on this page as a PDF — for tenders, planning and sharing within the project.
DIAMOND patch panels and boxes
Dimensions, configurations, order numbers and connection technology for the DIAMOND patch panels and boxes line.
DIAMOND compact modules
Dimensions, configurations, order numbers and connection technology for the DIAMOND compact modules line.
Full catalogue
The complete range at a glance — splice boxes, modules, subracks, cable management and the DIAMOND product line.
Your project starts with an enquiry
Project pricing and volume discounts on request. Lead time depends on the project — you receive the binding date with the quotation.
How to Choose Fusion Box vs Future Box
The same system technology, a different form factor and different fields of application.
- Choose Fusion Box when the installation will not be reconfigured during the lifecycle and density matters
- Choose Future Box when you anticipate maintenance, splicing access or expansion
- Both use the same E-2000® system — components are intermateable, training is identical
Configure your Fusion Box
Tell us your connector preference, port count and whether you want factory-terminated pigtails — we configure the right variant.