Phoenix Contact Terminal Blocks NZ | UT 2,5 UT 4 UT 6 CLIPLINE

Phoenix Contact Terminal Blocks

The UT range with confirmed order numbers, the colour and function suffixes, and why the rated size is not the conductor range.

Terminal blocks are the highest-volume item in any panel build and the most common thing to run short of. Phoenix Contact CLIPLINE is the range most New Zealand panel builders work with.

The rated size is not the conductor range

Worth understanding before you size a terminal, because the two figures are different and the range is wider than people assume.

Type	Rated cross section	Actual conductor range	Current
UT 2,5	2.5 mm sq	0.14 to 4 mm sq	24 A
UT 4	4 mm sq	0.14 to 6 mm sq	32 A
UT 6	6 mm sq	0.2 to 10 mm sq	41 A

A UT 6 accepts up to 10 mm sq even though it is a 6 mm sq terminal. Phoenix notes the large wiring space takes solid and stranded conductors without ferrules, even above the nominal cross section.

So if you have a 10 mm sq conductor you may not need to step up a frame size. Worth checking before specifying larger and more expensive terminals than the job needs.

The current rating follows the rated size, not the conductor you happen to fit, so size on the load as well.

The suffix tells you colour and function

Same terminal, different suffix, different order number. This is where orders go wrong.

Suffix	Meaning	Colour
None	Standard feed-through	Grey
BU	Feed-through, neutral convention	Blue
PE	Protective conductor, earth	Green-yellow
TWIN	Two conductors per side	Varies
QUATTRO	Four conductors, two per side	Varies
TB, TTB	Double-level terminal block	Varies
D- prefix	End cover or partition plate	Varies

A PE terminal is not just a green-yellow feed-through. It connects to the DIN rail through a snap-on PE foot, so the earth path is through the rail rather than a wire. Fitting a standard terminal in its place breaks that path.

UT range, confirmed order numbers

Order number	Type	Colour	Rating	Conductor range
3044076	UT 2,5	Grey	1000 V, 24 A	0.14 to 4 mm sq
3044089	UT 2,5 BU	Blue	1000 V, 24 A	0.14 to 4 mm sq
3044102	UT 4	Grey	1000 V, 32 A	0.14 to 6 mm sq
3044131	UT 6	Grey	1000 V, 41 A	0.2 to 10 mm sq
3044144	UT 6 BU	Blue	1000 V, 41 A	0.2 to 10 mm sq
3044157	UT 6-PE	Green-yellow	Protective conductor	0.2 to 10 mm sq

All mount on NS 35/7,5 or NS 35/15 DIN rail. Screw connection, M4 on the UT 6-PE.

The UT 4 is 6.2 mm wide, which is the figure to use when calculating rail length for a terminal strip.

A note on published specifications

You will find different figures for the same part on reseller sites. We work from the manufacturer data, and where a reseller and the manufacturer disagree we go with the manufacturer.

If a specification matters for your application, tell us and we will confirm it against the Phoenix Contact datasheet rather than a catalogue listing.

The UT sub-families

Family	What it is
UT	Standard feed-through, screw connection
UTN	Larger cross sections
UTI	Low profile, for restricted panel depth
UTTB	Double-level
UT-PE	Protective conductor
UK	Earlier screw generation, still widely installed

UTI is the one to know about for shallow panels

The UTI series has a low vertical profile, only 58 mm high on standard TS35 DIN rail, and supports conductor cross sections up to 35 mm sq at 110 A.

If you are fitting into a shallow enclosure or a door, that height difference is often what decides whether the job fits. UTI also offers a quick-install busbar option that cuts assembly time, and standard phase wiring colours.

Material is UL94-V2 rated polyamide.

Confirmed UTN and UTI numbers

Order number	Type	Specification
3245053	UTN 16, blue	Single level, screw, 400 V, 76 A, 6 to 25 mm sq
3073827	UTI 16, grey	Single level, screw, low profile

Note the UTN 16 is rated 400 V where the UT range is 1000 V. Larger cross section does not mean higher voltage rating. Check both figures against your application.

Connection technologies

Family	Connection	Wiring
UT, UK	Screw	Torque to spec, no retightening needed
ST	Spring-cage	Screwdriver opens the clamp
PT	Push-in	Ferruled conductor pushes straight in, no tool
QT	Quick connection	Insulation displacement

Push-in is the fastest by a wide margin on a large terminal strip, because a conductor with a ferrule goes in without a tool. That matters on a panel build with several hundred terminations.

Spring-cage and push-in both avoid the retorque question entirely, which is why they are common in vibration-prone applications.

Confirmed PT and ST numbers

Order number	Type
3209549	PT 2,5-TWIN
3208197	PT 1,5/S-QUATTRO
3211797	PT 4-QUATTRO
3210583	PTTB 2,5-PV
3030417	D-ST 2,5
3036563	ST 4-HESILA 250, 5x20

Fuse terminals

The HESILED and HESILA families are fuse terminal blocks with an LED indicator that lights when the fuse blows. That turns a blown fuse from a hunt into a glance.

Order number	Type
3000540	UK 5-HESILED24 N
3246434	TB 4-HESILED 24, 5x20
3036563	ST 4-HESILA 250, 5x20

Reading these: the number after HESILED is the LED voltage, so HESILED**24** carries a 24 V LED. The bracketed figure such as 5x20 is the glass fuse dimension in millimetres.

Fuses are ordered separately. The terminal does not come with one.

Disconnect and double-level terminals

Order number	Type	Function
2715966	DIK 1,5	Disconnect terminal
3003020	D-UK 4/10	End cover
3030417	D-ST 2,5	End cover
3210583	PTTB 2,5-PV	Double-level, push-in

Double-level terminals halve the rail length for the same number of terminations. Useful when a panel is already full and someone wants to add circuits.

Disconnect terminals have a blade or lever that isolates the circuit without removing wires, which makes commissioning and fault finding much faster.

The accessories that get forgotten

A terminal strip is not just terminals. These are the items most often left off an order.

Item	Purpose
End covers, D- prefix	Close the last terminal in a run. One per run
End clamps, CLIPFIX and E/UK	Stop the strip sliding along the rail
Partition plates, ATP	Separate groups or voltage levels
Bridges and jumpers, FBS	Link adjacent terminals. Standardised across the range
Markers, ZB and UC	Terminal identification
DIN rail, NS 35/7,5 and NS 35/15	The rail itself

Every run of terminals needs an end cover and two end clamps. They are cheap, they are always forgotten, and a panel without them looks unfinished and does not stay put.

Send us the terminal schedule and we will include all of it.

The Reakdyn screw locking principle

Phoenix Contact states that on UT terminal blocks it is not necessary to retighten the terminal screws, because they are prevented from loosening by the Reakdyn principle.

If your maintenance schedule includes a periodic retorque of every terminal in the panel, that step is not required on UT blocks. Worth knowing if you are writing or following a maintenance plan.

Other UT design features

Conductors connect with or without ferrules at the nominal cross section
The cable entry funnel accepts ferrules with plastic collars
Closed screw shafts guide the screwdriver, which speeds up wiring and reduces slips
Snap-on PE foot and standardised bridges save time building a strip
Cross sections up to 240 mm sq wire gas-tight with long-term stability

What we can supply

Current production. The full CLIPLINE range in UT, UTN, UTI, UK, ST, PT and QT, plus fuse terminals, disconnect terminals, end covers, clamps, bridges, markers and DIN rail. Quoted with a delivered lead time.

Panel build quantities. Terminal blocks are normally supplied in packs of 50 or 100 depending on type. Send us the schedule and we will quote the lot.

Discontinued. Older UK generation parts. Surplus where available.

Send us your order numbers

The seven-digit number is definitive, especially where colour variants exist. Or send the type and colour and we will find it. For a panel build, send the schedule and we will include the accessories. Quotes in NZD including GST.

Request a quote

Industech is an independent supplier of new, surplus and used industrial automation equipment. We are not an authorised distributor of, approved by, sanctioned by, or affiliated with Phoenix Contact GmbH & Co. KG. Phoenix Contact, CLIPLINE, CLIPFIX and Reakdyn are trademarks of Phoenix Contact. All trademarks, brand names and order numbers are the property of their respective owners and are used here for identification purposes only.