DIGITUS Dome Fiber Splice Closure — up to 48 fibres, IP68
Outdoor IP68Up to 48 fibresDome typeAerial · duct · buried
The DIGITUS DN-941091 is a dome-shaped fiber optic splice closure for up to 48 fibres, sealed to IP68 for outdoor use. It is used by installers and operators to splice, distribute and store optical cables entering and leaving at one end of the closure — on poles (aerial), in manholes and ducts, or buried directly.
Inside, the splice trays swing open like the pages of a booklet with room to coil fibre overlength, and the closure accepts both standard and ribbon cables. The housing is engineering plastic, resistant to acid, alkali and salt and to ageing; sealing rings and an air valve keep it tight, and it can be re-opened for maintenance.
Before you order: Cable entries are 4 small round ports of 16 mm. Check the outer diameter and number of your cables (configuration 1:3 or 2:2) before ordering.
What's in the Box
- 1x fiber optic splice closure
- 1x fibre protective tube, 1x heat-shrink sleeve
- 1x sealing rubber strip, 1x insulating tape
- 4x plastic plugs, 3x cable ties
- 1x sand paper, 1x silver paper, 1x cleaning tissue, 1x tag paper
What It Means in Practice
- Typical use: joints in FTTH and campus fiber routes, at pole tops, in manholes or along buried ducts.
- Entry/exit is 1:3 or 2:2 — e.g. one feeder in and three drops out.
- Tensile strength ≥ 1000 N; operating range −40 °C to +60 °C.
- A fusion splicer and splice protection are needed for the joints themselves.
What Will Not Work
- Cables thicker than the 16 mm round ports will not seal properly.
- It does not include splice protection sleeves for each fibre or any fiber cable.
- Not a distribution box with patch connectors — it is a sealed splice enclosure.
- Not for indoor rack mounting.
Key Features
IP68 sealed
Sealing rings and air valve for outdoor, buried and manhole use.
Booklet trays
Hinged splice trays with space for fibre overlength.
Durable plastic
Resists acid, alkali and salt, anti-ageing.
Re-enterable
Can be opened repeatedly for maintenance.
Technical Specifications
| Identification |
| Part Number |
DN-941091 |
| EAN / GTIN |
4016032486794 |
| MPN |
DN-941091 |
| Brand |
DIGITUS (ASSMANN Electronic) |
| Closure |
| Max. capacity |
48 fibres |
| Cable entry/exit |
1:3 or 2:2 |
| Ports |
4 small round ports (16 mm) |
| Protection |
IP68 |
| Dimensions (D × H) |
300 × 190 mm |
| Tensile force |
≥ 1000 N |
| Installation |
Aerial, manhole, duct, buried |
| Environment |
| Operating temperature |
−40 °C to +60 °C |
| Humidity |
≤ 95 % at 40 °C |
| Air pressure |
70–106 kPa |
| Design lifetime |
25 years |
| Warranty |
| Warranty |
1-Year Warranty (Singular) |
| Manufacturer Term |
Manufacturer warranty term not published by DIGITUS — any warranty claim is handled through Singular |
Frequently Asked Questions
Can it be buried directly?
Yes — DIGITUS lists aerial, manhole, pipeline and buried installation, with IP68 sealing.
Does it take ribbon cable?
Yes, it is suitable for both ribbon and standard optical cables.
Singular Expert Insight · Buyer's Guide
For an outdoor joint the sealing is what fails first, so prepare cable jackets carefully with the supplied abrasive and sealing strip and use one plug per unused port. Indoors, at the end of the route, terminate in a splice box from our
rack accessories range.
✓ Buy it if you need a sealed outdoor joint for up to 48 fibres with up to 4 cable entries.
✕ Skip it if you need an indoor termination with connectors, or your cables exceed 16 mm.
→ Also consider a pre-equipped 1U DIGITUS splice box for the indoor end of the route.
Send us your cable diameters and fibre count and we will confirm the closure before you order.