Professional cable manufacturer
DIN 46234 · DIN 46235 · electro-tin plated
Tinned Copper Cable Ring Terminal, 10–630 mm²
Ring-palm compression terminals in 99.9% electrolytic copper, fully tin-plated, for bolted connections in panels, switchgear and EV charging equipment — 14 sizes from 10 to 630 mm².
10–630 mm²
Conductor Range
14
Sizes
E-Cu 99.9%
Copper
M6–M20
Bolt Sizes
DIN 46234 / 46235 Full tin plating Free samples for qualified projects ISO 9001
DIN 46234 RING TERMINALS
DIN 46234ring terminal standard
DIN 46235tubular barrel
E-Cu 99.9%electrolytic copper
Tincorrosion protection
10–630 mm²14 sizes
Key Specifications
The essentials, at a glance
What matters on a bolted ring connection: barrel, plating, hole size and crimp.
14
sizes, 10–630 mm²
99.9%
electrolytic copper
Tin
full plating
M6–M20
bolt holes
1 kV
low-voltage service
Seamless
tube barrel
Product Overview
A bolted joint that stays at the same temperature
The ring terminal is the short-barrel version of the compression lug: a seamless copper tube with a ring palm, crimped onto the conductor and bolted through the equipment terminal. It is the standard termination for panel wiring, control gear and equipment connections up to 1 kV.
The body is electrolytic copper at 99.9% purity with full tin plating. Plating is what makes a bolted joint stable: bare copper oxidises, the oxide raises contact resistance, and the joint runs hotter each year. The tin layer also keeps the terminal from seizing in aluminium or plated terminals.
Fourteen sizes cover 10 mm² to 630 mm², with bolt holes from M6 to M20 and several hole options per cross-section so the palm matches the equipment drilling rather than being adapted to it. The barrel is seamless and crimped with DIN 48083-4 hex dies.
Typical service is low-voltage power distribution and control — distribution boards, motor control centres, EV charging equipment and industrial panels — where a repeatable, inspectable crimp matters more than the cost of the part.
More about the manufacturer: About SORIVO →
Key Features
Eight things that decide the connection
Electrolytic Copper 99.9%
High-purity E-Cu for maximum conductivity and a consistent crimp through the barrel.
Full Tin Plating
Corrosion protection over the whole terminal, keeping contact resistance stable in humid and industrial air.
DIN 46234 Dimensions
Ring palm and barrel dimensioned to DIN 46234, with the tubular barrel to DIN 46235 practice.
Seamless Barrel
One-piece tube: no seam to open under compression, so the crimp is uniform around the conductor.
14 Sizes
10 mm² to 630 mm², covering control wiring through to main feeder terminations.
Multiple Hole Options
M6 to M20 bolt holes, with several options per cross-section to match the equipment drilling.
Hex Crimp
Crimped with DIN 48083-4 dies on hydraulic or manual tools — the same tooling used for tubular lugs.
Free Samples
Qualified projects and OEM customers can evaluate the terminal on their own conductor before ordering.
Applications
Where ring terminals are used
Bolted terminations in panels, equipment and charging infrastructure — anywhere a stud is the connection point.
01
Distribution Boards
Feeder and outgoing terminations on MCB and MCCB busbars.
02
Motor Control Centres
Contactor and overload terminals, where several sizes share one palm pattern.
03
EV Charging Equipment
High-current terminations inside AC and DC chargers, on copper busbars and blocks.
04
Control Panels
Instrument and control wiring where a bolted, inspectable joint is preferred to a screw clamp.
05
Transformer & Bushing Taps
Small power taps and earth connections on bushings and terminal blocks.
06
Earthing Systems
Earth conductor terminations to studs and earth bars.
07
Machine & Equipment Wiring
Motor terminal boxes and equipment feeds on packaged plant.
08
Test & Laboratory Set-ups
Temporary and semi-permanent high-current connections where a repeatable crimp is needed.
Technical Specifications
Full specification sheet
Dimension table for all fourteen sizes, plus material, crimping and order data.
Table 1 Barrel, bolt hole and length by cross-section
| Cross-section mm² | Barrel ID mm | Bolt hole | Length mm |
|---|---|---|---|
| 10 | 4.5 | M6 / M8 | 38 |
| 16 | 5.5 | M6 / M8 / M10 | 45 |
| 25 | 7.0 | M8 / M10 | 52 |
| 35 | 8.5 | M8 / M10 / M12 | 58 |
| 50 | 10.0 | M10 / M12 | 66 |
| 70 | 11.5 | M10 / M12 | 74 |
| 95 | 13.5 | M12 | 82 |
| 120 | 15.5 | M12 / M16 | 88 |
| 150 | 17.0 | M12 / M16 | 96 |
| 185 | 19.0 | M16 | 104 |
| 240 | 21.5 | M16 / M20 | 112 |
| 300 | 24.0 | M16 / M20 | 124 |
| 400 | 27.5 | M20 | 138 |
| 630 | 35.0 | M20 | 168 |
The 50 mm² row is highlighted as a common panel size. Barrel bore must match the conductor; length is overall including the ring palm. Hole options shown are the standard set per size — if the equipment terminal needs a different drilling, send the drawing and we will confirm availability.
Table 2 Material, crimping and order data
| Product Identification | |
| Product type | Tinned copper cable ring terminal, crimping type |
| Standards | DIN 46234 (ring type), DIN 46235 (tubular barrel practice) |
| Certification | CE, RoHS, ISO 9001 |
| Material & Finish | |
| Base material | Electrolytic copper (E-Cu), 99.9% purity |
| Surface finish | Electro-tin plated over the whole terminal |
| Construction | Seamless tubular barrel with ring palm |
| Conductor & Crimping | |
| Conductor classes | Class 2 stranded and Class 5 fine stranded to IEC 60228 |
| Cross-sections | 10 mm² to 630 mm² |
| Voltage rating | Up to 1 kV low voltage; higher with appropriate insulation |
| Crimping | Hydraulic or manual tool with DIN 48083-4 hexagonal dies |
| Pull-out force | Exceeds IEC 61238-1 requirements |
| Packaging & Logistics | |
| Packaging | Polybag, box or bulk pack |
| Samples | Free samples for qualified projects |
| MOQ | Negotiable per size |
| Lead time | 7–15 working days; stock sizes 3–5 days |
Ring terminals are selected by conductor cross-section and by the stud size of the equipment terminal — a correct crimp on the wrong hole size still will not assemble. Plating thickness and barrel bore are the two values to confirm on the drawing for a specification job.
Certificates & Standards
Verify before you buy — we make it easy
DIN 46234
The dimensional standard for ring-type compression terminals: palm shape, hole pattern and barrel dimensions. Checked per batch.
Request dimension report →IEC 61238-1
Mechanical and electrical acceptance for compression connectors — pull-out force and resistance, verified on the specified conductor class.
Request test report →CE, RoHS & ISO 9001
Declaration of conformity, RoHS statement and quality-management certificate issued with the quotation.
Request declaration →
Transparency note: certification status and exact scope should always be confirmed against the certificate for the selected product configuration. We provide the certificate and test reports with every quotation — no blank promises.
Quality & Factory
Checked before the carton is sealed
Bore, plating and crimp performance decide whether a ring terminal stays cool for twenty years.
- 1Incoming material control — Copper grade and plating thickness checked before forming.
- 2Dimensional check — Barrel bore, palm dimensions and hole spacing gauged to DIN 46234.
- 3Crimp verification — Sample terminals crimped on the matching conductor and pull-tested.
- 4Batch documentation — Material and test records issued with the order on request.
19+
countries served
60+
industrial & panel projects
100%
batch inspection before shipment
How to Order
From inquiry to loaded carton in 5 steps
Send Inquiry
Tell us the thread size, cable outer diameter and quantity — a photo of the enclosure entry helps.
Confirm Size
We confirm the gland size, sealing material and quotation within one working day.
Sample Evaluation
Samples for fit and sealing checks; stocked sizes ship in a few working days.
Bulk Production
5–15 working days depending on size and finish; stock items in 3–5 days.
Delivery & Support
Polybag or box packing, shipping documents and support on installation questions.
FAQ
Questions buyers ask before ordering
These are ring-type terminals to DIN 46234, with a short seamless tubular barrel following DIN 46235 practice for the compression section. DIN 46235 proper describes the long-barrel DT lug; the ring palm and overall length are what distinguish the two.
Yes — DIN 48083-4 hexagonal dies on a hydraulic or manual crimping tool. The die is selected by conductor cross-section and class, not by the terminal family, so one tool set covers both ring terminals and tubular lugs.
Yes, for qualified projects and OEM customers. Send the cross-section, conductor class and stud size, and we will supply samples so the crimp can be proved on your own cable before the volume order.
Between one and four, depending on cross-section — from M6/M8 at 10 mm² up to M20 at 240 mm² and above. If the equipment needs a non-standard drilling, send the terminal drawing and we will confirm.
Yes. The higher cross-sections are used for busbar and charger terminations where a bolted, inspectable joint is required. Confirm the stud size and the current, and specify if the joint has to pass a temperature-rise test as part of the charger certification.
The terminal is a bare copper part rated for low-voltage service up to 1 kV; above that the joint depends on the cable insulation and termination kit. State the system voltage when ordering so the correct insulation accessory can be quoted.
The range is bare tinned copper. Pre-insulated terminals with a colour-coded nylon sleeve are a different product family; if the panel specification calls for insulated ferrules or insulated ring terminals, say so at inquiry and we will quote the matching family rather than substitute these.
Full electro-tin plating over the terminal. The tin layer is what keeps copper oxide from forming at the bolted interface — oxide is the reason bolted joints heat up and loosen over time. For coastal or chemical sites, say so: plating thickness can be specified.
Need free samples to prove the crimp?
Tell us the cross-section, conductor class and stud size — we reply within one working day.
Get a Free Quote
Send your ring terminal requirement
The more detail you give, the faster and more accurate our quotation. Our engineers reply within one working day.
- Conductor cross-section and class (2 or 5)
- Stud / bolt size of the equipment terminal
- System voltage and whether a temperature-rise test applies
- Quantity per size
- Whether free samples are required for evaluation
Inquiry received
Thanks — our engineers will reply within one working day.
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