Pluggable
The plug holds the wires and pulls off the PCB header, so you can swap a board without rewiring. Specify plug and header separately.
UNITECH range139 part numbers
Terminal Blocks & Connectors
PluggablePCB screwScrew-freeBarrier
Pluggable, screw, screw-free and barrier terminal blocks in pitches from 2.50 to 13.0 mm, rated up to 600 V and 40 A, and tested at AC 1500 V for 1 minute.
Type—
Pitch—
Rated—
In range—
Simplified cutaways of each terminal type, not to scale. Ratings are from the UNITECH catalogue.
- 139part numbers
- 4terminal types
- 2.50 – 13.0 mmpitch
- 600 V · 40 Ahighest rating
- 2 – 24poles
Four types
Pick how the wire meets the board.
Choose the type for your assembly, then narrow down by pitch, current and wire size.
Choose by pitch
Every pitch in the range, to scale.
Pitch is the centre-to-centre distance between poles. Tap one to see the part numbers that use it.
Part finder
All 139 part numbers, filtered your way.
Specifications as printed in the UNITECH catalogue. Tell us the number of poles when you add a part to your list.
Values marked † are being confirmed with the UNITECH technical team.
Know the terms
Plug, screw, spring or barrier?
What each type is for, in one line each.
PCB screw
Soldered to the board, with a screw clamp per wire. The torque value for each part is in its specifications.
Screw-free
The wire is held without a screw, which speeds up assembly and copes with vibration. Listed as “screw free” in the catalogue.
Barrier
Larger pitches and raised walls between poles for higher voltage and current, up to 600 V and 40 A. Listed as “palisade” in the catalogue.
AC 1500 V / 1 minWithstanding voltage on the range
−40 °C to +105 °CTemperature range on most part numbers
2 to 24 polesMost part numbers, by order
17 pitch sizesFrom 2.50 mm to 13.0 mm
Where they fit
On the board, in the cabinet, at the power feed.
Pluggable & PCB screw
Electronics & PCBs
Field wiring onto control boards, power supplies and electronic equipment.
Screw-free
Panels & machines
Fast, screwless connections in control panels and on machines.
Barrier
Power & distribution
Higher-current connections at 300 V and 600 V, with a wall between every pole.
Complete the installation
Wire it, sense it, seal it.
Order the rest of the job on the same quote.
Terminal block FAQ
Good to know before you order.
UNITECHTerminal Blocks
Catalogue · 12 pages
Full catalogue
All 139 part numbers with photos and ratings. Each part in the finder shows its catalogue page.
Download PDF PDF · 0.8 MB · All downloadsWhat should I include in my enquiry?
The part number, the number of poles you need and the quantity. Most part numbers come in 2 to 24 poles; some pluggable parts go up to 22. For pluggable blocks, list the plug and the matching header as separate lines.
What is pitch, and why does it matter?
Pitch is the centre-to-centre distance between poles, in mm. It must match the hole spacing on your PCB, and it sets how large the terminal and its ratings can be. Some parts list two pitches, such as 5.00 / 5.08 mm.
What does a pole count like “2P–24P” mean?
It is the range of pole counts the part is offered in, from 2 positions to 24. “2*(2P–22P)” means a two-row part with 2 to 22 poles per row.
Some parts have no wire range or torque. Why?
Those are listed without a wire clamp, for example PCB headers that a pluggable plug fits onto. The wire range and tightening torque apply to the parts that clamp a wire.
What is a “palisade” terminal?
The UNITECH catalogue lists barrier terminal blocks as “palisade” terminals. On this site they are called barrier terminal blocks, the term most buyers search for.
How do I order?
Add parts to your enquiry list with the poles and quantity, then send the list on WhatsApp or email. We reply with price and availability, and deliver across India.
Gateway of India, MumbaiOur base: Lohar Chawl, Mumbai
Request a quote
Have a part number? Get a quote.
Send part numbers, quantities or a drawing. We come back with the matching part, price and availability.
- Part numbers, drawings or samples
- Single items or bulk quantities
- Delivery across India