equip 25555407 — MTP to MTP Trunk Fiber Optic Patch Cable, OM4, Type B, 7 m
MTP ↔ MTPOM4 · 50/125 µmType B polarity7 m · aqua LSZH
The equip 25555407 is a 7 m MTP-to-MTP trunk cable with OM4 50/125 µm multi-mode fibre, wired for Type B (crossed) polarity. It carries a complete parallel-optic link — or a bundle of duplex links via cassettes — between racks, rows or a main and zone distribution area in data centres and enterprise backbones.
Heat-shrink tubing reinforces the connector transitions, and controlled fibre overcut on the MTP ferrules supports consistent optical mating. The aqua LSZH jacket identifies the cable as OM3/OM4 multi-mode and meets low-smoke zero-halogen requirements for indoor installations.
Before you order: Type B polarity is used for direct links between parallel-optic transceivers (e.g. 40G/100G SR4) and in Type B cassette systems; it is not interchangeable with Type A or Type C channels. equip does not publish the fibre count or the connector gender (pinned/unpinned) for this cable — confirm both against your transceivers or cassettes, or send us the models.
What's in the Box
- 1 × equip MTP/MTP trunk fiber optic patch cable, OM4, Type B, 7 m
What It Means in Practice
- Typical use: connecting two SR4 transceivers, or two MTP cassettes, across neighbouring racks.
- Type B flips fibre positions end to end, so transmit lanes arrive at receive lanes without a polarity adapter in a Type B system.
- OM4 gives the longest supported multi-mode distances for 40G/100G SR4 optics.
- One MTP trunk replaces several duplex patch cords, keeping cable trays and racks tidy.
What Will Not Work
- It will not suit Type A or Type C polarity plans without changes elsewhere in the channel.
- It will not work in single-mode systems.
- It does not break out to LC or SC — for that use an MTP fan-out or cassette.
- Two connectors of the same gender cannot mate; check pinned/unpinned compatibility first.
Key Features
MTP trunk
MTP to MTP for parallel-optic links and cassette-based systems.
Type B polarity
Crossed connection for direct transceiver-to-transceiver links.
OM4 fibre
50/125 µm multi-mode for high-speed short-reach optics.
Robust build
Heat-shrink strain relief, controlled overcut, aqua LSZH jacket, RoHS.
Technical Specifications
| Identification |
| Part Number |
25555407 |
| EAN / GTIN |
4015867192580 |
| Brand |
equip |
| Product type |
MTP to MTP trunk fiber optic patch cable |
| Optical |
| Connectors |
MTP to MTP |
| Polarity |
Type B (crossed) |
| Fibre |
OM4 multi-mode 50/125 µm |
| Fibre count |
Not published by equip |
| Cable |
| Length |
7 m |
| Jacket |
LSZH, aqua (turquoise) |
| Strain relief |
Heat-shrink tubing |
| Weight |
0.05 kg |
| Compliance |
RoHS |
| Warranty |
| Warranty |
1-Year Warranty (Singular) |
| Manufacturer Term |
Manufacturer warranty term not published by equip — claims handled through Singular |
Frequently Asked Questions
Can I connect two 100G SR4 transceivers directly?
Yes, that is what Type B trunks are commonly used for — provided the connector genders match (SR4 transceivers are usually pinned, so the trunk ends must be unpinned). Send us the transceiver models to confirm.
What is the difference between Type A and Type B?
Type A keeps fibre position 1 at position 1 end to end; Type B reverses the positions (1 to 12). The rest of the channel must follow the same method.
Can I use it with LC cassettes?
Yes, if the cassettes are designed for a Type B system. Mixing polarity methods leads to swapped transmit/receive lanes.
Singular Expert Insight · Buyer's Guide
With MTP trunks, the cable is rarely the issue — polarity and gender are. This equip trunk is Type B; match it to SR4 optics or Type B cassettes, confirm pinned/unpinned with your hardware, and route it neatly with suitable
rack accessories.
✓ Buy it if you are building a Type B MTP channel in OM4 and need a 7 m trunk between racks.
✕ Skip it if your system uses Type A or Type C polarity, single-mode fibre, or you need an LC/SC breakout.
→ Also consider equip 25557307 (MTP to SC fan-out, OM4, 8 fibres, 3 m) for breakouts to SC ports.
Send us the transceiver or cassette models at both ends and your polarity plan, and we will confirm the trunk before you order.