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Terminal block buying guide

Updated: October 2026

You are holding a bag of connectors, and every amazon.co.uk title says terminal block. Some are cuttable screw strips, some are barrier strips, and two are lever splices. This terminal block buying guide is the order to use before the price: type, the current on this piece, the conductor the listing names, then the enclosure you still have to add. The twelve-row table, from about £3.19 to about £11.99, stays on the [terminal block comparison](/hub/diy-supplies/terminal-block). Peter F. checked those listings on 16 October 2026. Nothing here was laboratory tested. A CE cell is not a BS EN 60998 declaration. Links to amazon.co.uk from that comparison are affiliate links.

You are holding a bag of connectors, and every amazon.co.uk title says terminal block. Some are cuttable screw strips, some are barrier strips, and two are lever splices.

Our top picks

GTSE GTSE 3 A and 15 A strip pack

Best overall

GTSE GTSE 3 A and 15 A strip pack
8.7/10about £7.99
View offer
ZFYQ ZFYQ 35-piece lever splice set

Alternative

ZFYQ ZFYQ 35-piece lever splice set
7.4/10about £5.99
View offer
Blackspur Blackspur BB-CT110 3 A and 15 A

Preis-Tipp

Blackspur Blackspur BB-CT110 3 A and 15 A
7.2/10about £3.60
View offer
On this page
  1. 1.Three different products share this name
  2. 2.The current on this piece, not every number in the title
  3. 3.Conductor size is often missing
  4. 4.The strip is not the box
  5. 5.Price comes after the screws

Three different products share this name

A screw choc strip is a row of brass tunnels you cut between the ways. In this set that is SDFIXINGS, GTSE, LTMMC, Brackit, Blackspur, XINXINGDINGSHENG and Funver. A barrier strip is JZK at about £6.99 or HSEAMALL at about £11.99, with combs or jumpers. A lever splice has no screw: ZFYQ is 35 pieces at about £5.99, and flintronic is the clip-together pack at about £7.98. Those three do not stand in for one another because the search used one phrase. A model-railway jumper is not the connector for a ceiling rose. If you already know you want a screw or a lever, the terminal block versus lever connector page takes that split further.

The current on this piece, not every number in the title

Read the current cell and the package line. A bullet that lists every amp rating is a catalogue paste. The SDFIXINGS cells say 3 A (about £3.86) or 5 A (about £3.92), while the shared bullets mention 3 A through 60 A. One bullet says a spring clamp and the connector cell says Screw. The same image and part A58 sit on both listings. GTSE’s package line is two 3 A strips and two 15 A strips, and the current cell says 15 A only. A common UK socket ring protected at 32 A is a rule of thumb, and a 3 A strip is not that joint. The terminal block for lighting page is the small end of the set.
GTSE GTSE 3 A and 15 A strip pack

Testsieger

GTSE GTSE 3 A and 15 A strip pack
8.7/10about £7.99
View offer

Conductor size is often missing

Most of these screw strips leave the conductor cell blank. That is not any lighting flex. One conductor per hole unless the maker says otherwise. These packs do not include ferrules. The IET’s Wiring Matters mythbuster, on regulation 526, says the joint has to suit the conductor, and that tape is not the enclosure. ZFYQ states solid and stranded 0.08–2.5 mm² and flexible 0.08–4 mm², with a 250 V cell and no current cell. flintronic’s title, bullet and 0.08 mm cell disagree, and a reviewer’s 32 A figure is not printed. None of these captures shows a BS EN 60998 declaration.

The strip is not the box

No capture prints an IP rating. A review that mentions garden lights does not create an outdoor rating, and a joint you bury is off the table for the same reason. HSE says not to repair a cable with tape or an unsuitable connector. A CE cell is not a BS EN 60998 declaration and not a BS 7671 certificate. GOV.UK still recognises CE marking in Great Britain alongside UKCA, and that recognition does not approve the joint. The strip does not replace a junction box. The rose or the box is the enclosure. Price is the last check, once the screw or the lever will hold.

Price comes after the screws

The captures run from about £3.19 to about £11.99, and the cheap end is where the complaints cluster. XINXINGDINGSHENG at about £3.19, 4.1 from 19 reviews, has UK texts that describe split brass. Blackspur at about £3.60, 4.5 from 1,043 reviews, has screws that strip and housings that crack. The SDFIXINGS 3 A file has a review in which screws were missing and the rest stripped on the first turn. LTMMC, 3.9 from 30 reviews, has cross-threaded screws. A low price fits only if you will reject a damaged piece. Funver at about £4.99 has no review line, so it cannot be judged on screws. The best terminal block page names a conditional top pick and a best value with those complaints attached.

Common questions

What should you check on a terminal block before the price?
Check the type first, because a screw strip, a barrier strip and a lever splice are not interchangeable. Then read the current cell for this piece, not every amp figure in a shared bullet. Then see whether a conductor size in mm² is printed. None of these captures prints an IP rating, and the strip is not the box.
Is a strip marked 3 A to 60 A in the title one 60 A block?
No. On the SDFIXINGS listings the current cell says 3 A or 5 A, while the shared bullets list 3 A through to 60 A. GTSE’s cell says 15 A and the package line is two 3 A strips and two 15 A strips. Use the cell, and the pack line if it names more than one size.
How many conductors go in one hole?
One, unless the maker says otherwise. These packs do not include ferrules. ZFYQ states a millimetre range, and it is a lever rather than a screw hole. The screw strips mostly leave the conductor cell empty. Doubling two wires under one screw is a mistake to avoid. Cutting and tightening sit on the how-to page, not in this buying order.
Is a CE cell the same as a BS EN 60998 declaration?
It is not, and the strip does not replace the box either. Some listings print CE. None shows a BS EN 60998 declaration. GOV.UK still recognises CE marking in Great Britain alongside UKCA, and that does not mean the joint complies with BS 7671. No listing prints an IP rating, so tape is not an outdoor enclosure. XINXINGDINGSHENG’s specification-met cell says Energy Rating, which is not an electrical standard name.
When is a 3 A strip the wrong piece?
It is the wrong piece on a socket ring. A common UK ring is protected at 32 A, and that figure is a rule of thumb, not a number from these listings. A 3 A cell, such as SDFIXINGS at about £3.86, is the small end of this set. It is also the wrong piece if you only believed the shared bullet that mentions 60 A.

Related pages

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Best terminal block: who it suits, who should skip

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Terminal block vs lever connector for one UK joint

Sources

Public UK sources on electrical safety and household connecting devices. Listings checked 16 October 2026. Prices on amazon.co.uk move.

  1. Approved Document P (2013) (retrieved 16 October 2026)
  2. Building Regulations 2010, Schedule 1, Part P (retrieved 16 October 2026)
  3. Planning Portal, electrics and building regulations (retrieved 16 October 2026)
  4. HSE, electrical equipment (retrieved 16 October 2026)
  5. BS EN 60998-1, household connecting devices (retrieved 16 October 2026)
  6. BS EN 60998-2-1, screw-type clamping units (retrieved 16 October 2026)
  7. GOV.UK, UKCA and CE marking in Great Britain (retrieved 16 October 2026)
  8. IET, BS 7671 18th Edition (retrieved 16 October 2026)