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PTB3121 Teknomega 1 Pole 4 Way connector Power Terminals
Teknomega PTB3121 is a 1-pole, 4-way power terminal block for 2.5–35 mm² copper or aluminium conductors, rated at 1000 V AC / 1500 V DC for industrial electrical panel and power distribution applications.
£4.09
Why Choose the Teknomega PTB3121 Power Terminal Block?
The Teknomega PTB3121 is a compact and robust 1-pole, 4-way power terminal block designed for secure high-current conductor connections and power distribution within industrial switchboards, electrical cabinets and control panels. As part of the Teknomega PTB power terminal block series, it provides four conductor connection points while maintaining a compact footprint for professional panel building and electrical distribution applications.
This power terminal supports both copper and aluminium conductors from 2.5–35 mm². It features a tinned aluminium conductive block, galvanised steel screws and a self-extinguishing PA66 UL 94-V0 insulating body, providing a durable connection system for demanding electrical installations.
With a rated insulation voltage of 1000 V AC / 1500 V DC, an 8 kV impulse withstand voltage and thermal current ratings of up to 135 A for copper and 120 A for aluminium, the PTB3121 is suitable for industrial power distribution and high-current cable termination. Its IP20 construction and compact grey housing make it ideal for installation within appropriately protected electrical panels and switchboards.
Key Advantages
- Compact 1-pole, 4-way power terminal block for industrial electrical installations.
- Four conductor connection points provide convenient power distribution within control panels.
- Accepts 2.5–35 mm² copper and aluminium conductors.
- 1000 V AC / 1500 V DC rated insulation voltage for demanding electrical systems.
- High thermal current capability of 135 A Cu / 120 A Al.
- Self-extinguishing PA66 UL 94-V0 insulating body.
- IP20 protection rating for installation within electrical enclosures.
- Suitable for both aluminium and copper power conductors.
Key Features
- Teknomega PTB power terminal block series.
- 1 pole with 4 conductor connection points.
- 2.5–35 mm² conductor capacity for copper and aluminium cable.
- 135 A thermal current rating with copper conductors.
- 120 A thermal current rating with aluminium conductors.
- 1000 V AC / 1500 V DC rated insulation voltage.
- 8 kV rated impulse withstand voltage.
- Tinned aluminium conductive block for reliable electrical contact.
- Galvanised steel screws for secure cable termination.
- Self-extinguishing insulating body for professional industrial installations.
- Grey housing suitable for phase and general circuit identification.
Reliable Power Connections for Electrical Panels
Power terminal blocks such as the Teknomega PTB3121 provide a secure interface for connecting and distributing higher-current conductors inside electrical panels. Its four-way configuration allows multiple copper or aluminium conductors to be connected to a common single-pole terminal, helping panel builders create organised and dependable power distribution systems.
The PTB3121 combines high insulation performance with strong short-circuit withstand characteristics and a flame-retardant insulating body. Its compatibility with copper and aluminium conductors makes it a versatile solution for switchboards, industrial machinery, automation cabinets and other professional electrical distribution assemblies.
Typical Applications
- Industrial electrical control panels.
- Switchboards and power distribution assemblies.
- Machinery and automation control cabinets.
- Copper and aluminium conductor termination.
- Single-pole power distribution within industrial equipment.
- High-current cable connection and distribution.
Technical Specifications
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| Product Series | Teknomega PTB | |
|---|---|---|
| Mounting Type | DIN rail | |
| Number of Outgoing Ways | 4 | |
| Conductor Size | 2.5–35 mm² | |
| Number of Connection Points | 4 | |
| Terminal Type | Power / Distribution | |
| Poles | 1-pole | |
| Colour | Grey | |
| HS Code | 85369095 | |
| Manufacturer | Teknomega | |
| Series | PTB Power Terminal Blocks | |
| Model | PTB3121 | |
| Reference | PTB-2-35-G | |
| Product type | Power terminal block | |
| Poles | 1 pole | |
| Connections | 4 way | |
| Copper conductor size | 2.5–35 mm² | |
| Aluminium conductor size | 2.5–35 mm² | |
| Thermal current, copper | 135 A | |
| Thermal current, aluminium | 120 A | |
| Rated insulation voltage | 1000 V AC / 1500 V DC | |
| Rated impulse withstand voltage | 8 kV | |
| Short-time withstand current (Icw) | 4.2 kA at 1 s | |
| Peak withstand current (Ipk) | 6.2 kA | |
| Pollution degree | PD 3 | |
| Comparative tracking index | 600 V | |
| Protection rating | IP20 | |
| Insulating body | PA66 UL 94-V0 | |
| Conductor material | Tinned aluminium | |
| Screw material | Galvanised steel | |
| Colour | Grey | |
| Maximum continuous operating temperature | +85 °C | |
| Dimensions (H × W × D) | approx. 40.3 × 27.3 × 47.4 mm | |
| Weight | approx. 0.043 kg | |
| Pack quantity | 5 | |
| Standards | EN 60947-7-1 and EN 61238-1-1 |
Frequently Asked Questions
What is the Teknomega PTB3121 used for?
The PTB3121 is a 1-pole, 4-way power terminal block used to connect and distribute copper or aluminium power conductors inside industrial electrical panels, switchboards and machinery control cabinets.
What conductor sizes does the PTB3121 accept?
The terminal supports both copper and aluminium conductors from 2.5–35 mm².
What voltage is the PTB3121 rated for?
The PTB3121 has a rated insulation voltage of 1000 V AC / 1500 V DC and a rated impulse withstand voltage of 8 kV.
What current can the PTB3121 carry?
The terminal has a thermal current rating of up to 135 A with copper conductors and 120 A with aluminium conductors.
How many connections does the Teknomega PTB3121 provide?
The PTB3121 is a single-pole terminal with four conductor connection points, allowing multiple conductors to be connected within a compact power distribution arrangement.
Trusted by Electrical Panel Builders
Teknomega PTB power terminal blocks provide panel builders, machine builders and electrical engineers with compact, reliable and versatile connections for copper and aluminium power conductors in industrial electrical distribution systems.
