Teknomega PTB3512 heavy-duty single-pole blue power terminal block for aluminium and copper conductors from 35 to 240 mm², rated at 425 A for copper and 380 A for aluminium.
£17.23
The Teknomega PTB3512 is a heavy-duty single-pole power terminal block engineered for the secure termination of very large aluminium and copper conductors in industrial switchboards, electrical distribution panels and automation cabinets. Designed with a 1 input / 1 output configuration, it provides a dependable connection point for high-capacity feeder cables and demanding industrial power distribution systems.
Manufactured using a robust PA66 UL94-V0 self-extinguishing insulating body, a tinned aluminium conductor block and galvanised steel clamping screws, the PTB3512 offers excellent electrical conductivity, corrosion resistance and long-term mechanical reliability. The conductor block is supplied pre-greased, helping minimise oxidation whilst improving electrical contact for both aluminium and copper conductors.
Supporting conductor sizes from 35 to 240 mm², the PTB3512 delivers an impressive continuous thermal current rating of 425 A for copper and 380 A for aluminium. Its blue housing is ideal for neutral conductor identification, while the versatile mounting system allows installation on a standard 35 mm DIN rail or directly onto a mounting panel.
The Teknomega PTB3512 is specifically engineered for terminating large neutral conductors where dependable electrical performance is essential. Its heavy-duty conductor block and robust clamping system provide secure cable retention even under demanding operating conditions, making it ideal for incoming neutral supplies and high-current distribution systems.
Suitable for both aluminium and copper conductors, the PTB3512 helps simplify panel design by allowing the same terminal block to be used across mixed-conductor installations. The pre-greased conductor block reduces installation time whilst helping maintain excellent long-term electrical performance.
| Current | 380 A |
|---|---|
| Phase | Single Phase |
| IP Rating | IP20 |
| Manufacturer | Teknomega |
| Series | PTB Power Terminal Blocks |
| Model | PTB3512 |
| Reference | PTB-1-240-B |
| Product type | Power terminal block |
| Number of poles | 1 |
| Connections | 1 input / 1 output |
| Copper conductor range | 35–240 mm² |
| Aluminium conductor range | 35–240 mm² |
| Rated thermal current (Cu) | 425 A |
| Rated thermal current (Al) | 380 A |
| Short-time withstand current | 28.8 kA for 1 second |
| Peak withstand current | 60.5 kA |
| Rated insulation voltage | 1000 V AC / 1500 V DC |
| Impulse withstand voltage | 8 kV |
| Protection rating | IP20 |
| Pollution degree | 3 |
| Comparative tracking index | 600 V |
| Insulating body | PA66 UL94-V0 |
| Conductor material | Tinned aluminium |
| Screw material | Galvanised steel |
| Housing colour | Blue |
| Mounting type | 35 mm DIN rail or panel mounting |
| Maximum operating temperature | +85 °C |
| Dimensions (L × W × H) | 122.5 × 38.1 × 71.4 mm |
| Weight | 0.350 kg |
| Pack quantity | 1 |
| Standards | EN 60947-7-1 and EN 61238-1-1 |
| HS Code | 85369095 |
The PTB3512 is used to terminate large aluminium and copper conductors inside industrial switchboards, distribution panels and electrical control cabinets, particularly for neutral conductor circuits.
The terminal accepts both aluminium and copper conductors from 35 to 240 mm².
The PTB3512 is rated for 425 A with copper conductors and 380 A with aluminium conductors.
Yes. The PTB3512 can be installed on a standard 35 mm DIN rail or mounted directly onto a panel.
The blue housing is commonly used for identifying neutral conductor connections within industrial electrical installations.
Teknomega PTB power terminal blocks are trusted by panel builders, OEM manufacturers and industrial electricians for dependable high-current conductor termination and reliable industrial power distribution.
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LED Controls is a specialist distributor of factory automation and industrial controls, supplying OEMs, machine builders, panel builders and end users throughout the UK and worldwide. As a trusted UK distributor for many of the world’s leading automation manufacturers, we provide industrial control products, technical expertise and bespoke automation solutions backed by outstanding customer service.
2025 has been a big year for LED Controls, and our blog has expanded accordingly. We've covered a wide range of topics across industrial control and factory automation this year. From core technology explainers and new product releases to panel building best practice...
2025 has been a big year for LED Controls, and our blog has expanded accordingly. We've covered a wide range of topics across industrial control and factory automation this year. From core technology explainers and new product releases to panel building best practice...