Teknomega PTB3621 heavy-duty single-pole 2 input / 2 output power terminal block for aluminium and copper conductors up to 300 mm², designed for industrial electrical distribution.
£44.98
The Teknomega PTB3621 is a heavy-duty single-pole power terminal block engineered for high-current electrical distribution in industrial switchboards, power distribution panels and automation cabinets. Also referenced as PTB-2-300-G, this grey terminal block features a 2 input / 2 output configuration, allowing efficient distribution of large aluminium and copper conductors from a single connection point.
Constructed with a durable PA66 UL94-V0 self-extinguishing insulating body and a tinned aluminium conductor block, the PTB3621 delivers excellent electrical conductivity and corrosion resistance. Pre-greased connection chambers help minimise oxidation when terminating aluminium conductors, ensuring dependable long-term performance in demanding industrial environments.
Supporting conductor sizes from 35 mm² to 300 mm², the PTB3621 is rated for 1000 V AC / 1500 V DC with an 8 kV impulse withstand voltage. Its robust design enables installation on DIN rail or directly onto mounting panels, making it an excellent choice for high-capacity electrical distribution systems.
The Teknomega PTB3621 provides a secure and organised method of distributing high-current conductors inside industrial electrical panels. Its dual connection design enables feeder cables to be split efficiently while maintaining low-resistance electrical connections for safe and reliable operation.
Designed for switchboards, machine control panels and OEM electrical equipment, the PTB3621 combines durable construction with high electrical performance. Compatibility with both aluminium and copper conductors makes it an excellent solution for modern industrial power distribution systems.
| Current | 440 A |
|---|---|
| Phase | Single Phase |
| IP Rating | IP20 |
| Manufacturer | Teknomega |
| Series | PTB Power Terminal Blocks |
| Model | PTB3621 |
| Reference | PTB-2-300-G |
| Product type | Power terminal block |
| Number of poles | 1 |
| Connections | 2 input / 2 output |
| Conductor size | 35 to 300 mm² (Al/Cu) |
| Current rating | 520 A (Cu), 440 A (Al) |
| Short-time withstand current (Icw) | 36 kA (1 s) |
| Peak withstand current (Ipk) | 75.6 kA |
| Rated insulation voltage (Ui) | 1000 V AC / 1500 V DC |
| Impulse withstand voltage (Uimp) | 8 kV |
| Pollution degree | PD3 |
| Comparative tracking index (CTI) | 600 V |
| Protection rating | IP20 |
| Insulating body | PA66 UL94-V0 |
| Conductor material | Tinned aluminium |
| Screw material | Galvanised steel |
| Maximum operating temperature | +85 °C |
| Colour | Grey |
| Mounting type | DIN rail or panel mounting |
| Dimensions (L × W × H) | approx. 132.3 × 71.7 × 77 mm |
| Weight | approx. 0.85 kg |
| Standards | EN 60947-7-1, EN 61238-1-1 |
| HS Code | 85369095 |
The PTB3621 is used for distributing and terminating large aluminium and copper conductors inside industrial switchboards, electrical distribution panels and automation systems.
The terminal supports aluminium and copper conductors ranging from 35 mm² to 300 mm².
Yes. The tinned aluminium conductor block is specifically designed to provide secure, reliable connections for both aluminium and copper conductors.
The PTB3621 has a rated insulation voltage of 1000 V AC / 1500 V DC and an impulse withstand voltage of 8 kV.
The terminal is designed for installation on a standard DIN rail or directly onto a mounting panel inside electrical enclosures.
Teknomega PTB power terminal blocks are trusted by panel builders, OEM manufacturers and electrical engineers for providing safe, organised and dependable high-current conductor connections in industrial power distribution systems.
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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...