Why Buyers Look for Phoenix UK Series Equivalents
The Phoenix Contact UK series is the original modular screw-type DIN rail terminal block — the design that defined the industry standard for decades. Its part numbering (UK 1,5 N, UK 2,5 B, UK 10 N … UK 35 N) became the universal language of screw terminal blocks: control cabinets, PLC panels, distribution boxes and machinery worldwide are specified around it.
That popularity is exactly why buyers look for equivalents: original Phoenix pricing is high, distributor lead times stretch, and OEMs need a qualified second source to de-risk supply. But swapping a screw terminal is not only about the block itself — the end plates, bridges, end stops and mounting rail must all match the system, or the row will not assemble cleanly.
This guide cross-references the complete UK system: feed-through terminals, test terminals, accessories and rails — with the specs you need to verify before substituting.
Quick Answer
Our UK series uses identical part numbering (UK 1,5 N → UK1.5N, UK 10 N → UK10N …), snaps onto the same NS35 / TH35 35 mm DIN rail, and accepts the same system accessories — D-UK end plates, bridging bars, EW-35 end stops. Full datasheets and free samples available: send your Phoenix part list here.
Terminal Cross-Reference Table: UK 1,5 N to UK 35 N
| Phoenix Model | Wire Range | Rated Current | Rated Voltage | Our Equivalent |
|---|---|---|---|---|
| UK 1,5 N | 0.2–1.5 mm² | 17.5 A | 660 V | UK1.5N |
| UK 2,5 B | 0.2–2.5 mm² | 32 A | 660 V | UK2.5B |
| UK 3 N | 0.2–2.5 mm² | 32 A | 660 V | UK3N |
| UK 5 N | 0.2–4 mm² | 41 A | 660 V | UK5N |
| UK 6 N | 0.2–6 mm² | 57 A | 660 V | UK6N |
| UK 10 N | 2.5–10 mm² | 76 A | 660 V | UK10N |
| UK 16 N | 2.5–16 mm² | 101 A | 660 V | UK16N |
| UK 35 N | up to 35 mm² | 125 A | 660 V | UK35N |
Ratings follow the industry-standard UK-series specification (IEC 60947-7-1 / GB 14048). Note that Phoenix’s own catalog lists some values more conservatively under different test conditions (e.g. 500 V for the UK 1,5 N) — always confirm the datasheet against your application standard. All models: PA66 UL94 V-0 flame-retardant housing, screw clamp connection, 35 mm DIN rail mounting. See the full UK series product page →
Complete System Cross-Reference (Terminals + Accessories)
A UK terminal row is a system, not a single part. This is where incomplete suppliers fail — and where a full-system source saves you assembly time:
| Function | Phoenix Type Reference | Our Equivalent | Details |
|---|---|---|---|
| Feed-through terminals | UK 1,5 N … UK 35 N | UK series | UK1.5N – UK35N, bridgeable |
| CT test / disconnect terminals | URTK/S | URTK-S | 400 V / 41 A, current transformer testing |
| End plates (insulation baffles) | D-UK series | D-UK series | D-UK1.5 / D-UK2.5B / D-UK3/10 / D-UK16 etc. |
| Rail end stops | E/UK, EW-35 | EW-35 / E-UK | For DIN35 / C45 rails |
| Mounting rails | NS35 / TH35 | C45 / TH35 U-type | 35 mm standard, slotted / unslotted |
| High-current distribution | UKK-style distribution blocks | UKK series | 80–500 A, single-in multiple-out, 690 V |
New to the UK series overall? Start with our overview: UK Series DIN Rail Terminal Block — types, mounting and applications.
Screw (UK) or Cage Clamp (260 Series)?
Both technologies live on the same 35 mm rail — many panels deliberately mix them. The quick logic:
- Choose UK screw terminals when you want the most proven, lowest-cost connection, full wire compatibility and simple visual inspection — the classic for control cabinets.
- Choose cage clamp (spring) terminals for vibration-heavy or maintenance-sensitive installations, tool-free wiring speed, and stranded wire without ferrules. See our WAGO 260 series cross-reference guide for the spring-connection family, or the full comparison: Push-in vs Screw vs Spring Terminal Blocks.
For sizing guidance (current, pitch, wire cross-section), see DIN Rail Terminal Block Sizing: How to Calculate Current & Pitch.
Before You Substitute: 5-Point Verification Checklist
- Wire range — both ends. Check the minimum too: a UK10N is specified from 2.5 mm², so a 0.75 mm² signal wire belongs in a UK1.5N / UK2.5B instead.
- Current & voltage rating. Match or exceed the original under the same standard (IEC 60947-7-1 vs UL are different systems).
- Torque spec and blade size. The UK family tightens at roughly 0.5–1.5 N·m depending on model — confirm per datasheet and use the correct screwdriver blade to avoid cam-out damage.
- Rail profile. NS35/7.5 vs NS35/15 depths matter for accessory alignment; all models above snap onto standard 35 mm rails.
- Accessories fit. End plates (D-UK), bridges and end stops should come from the same series for a flush, tool-free assembly. Certifications to request: CE, RoHS, CQC, IEC 60947-7-1, GB 14048.
Frequently Asked Questions
Are UK-series terminal blocks from different brands interchangeable on the same rail?
Yes — the UK geometry is standardized: same per-model width, same NS35/TH35 rail. Blocks from different brands can share a rail. For the cleanest fit, keep end plates, bridges and end stops from the same series as the neighboring terminals.
Do UK screw terminals accept stranded wire?
Yes, solid and stranded both. For high-vibration environments we recommend ferrules (bootlace crimp ends) on stranded wire — see our cord end ferrules for the matching sizes.
What is the working temperature range?
PA66 UL94 V-0 housing supports continuous operation from −40 °C to +105 °C (per model datasheet) — suitable for outdoor enclosures and heated cabinet interiors.
Which certifications are available?
CE, RoHS, CQC with performance to IEC 60947-7-1 and GB 14048. Certificates are supplied per model on request — ask here.
Can you supply the complete UK system in one shipment?
Yes — terminals, D-UK end plates, EW-35 end stops, C45/TH35 rails, URTK-S test terminals and UKK distribution blocks, so your terminal row arrives assembly-ready. Custom colors (grey / blue / yellow-green) and OEM marking available.
Get a Cross-Reference for Your BOM
Send us the Phoenix Contact (or other brand) part numbers from your BOM and we will return a completed cross-reference sheet with datasheets, certificates and a quotation — usually within one business day. Contact our team here or browse the UK series terminal blocks directly.
Download the Complete Catalog
All pitch options, current ratings, wire ranges and ordering codes in one printable PDF: get the free GS series catalog here.