Phoenix 3003350 UK 2,5 N BU Feed-Through Terminal Block, Blue, 2.5 mm², DIN Rail

For control cabinet builders and panel shops, the Phoenix 3003350 UK 2,5 N BU stands out as a feed-through terminal block that prioritises vibration-resistant screw clamping and a compact footprint without compromising on current capacity. Its blue housing provides instant visual identification for neutral or signal conductors, while the PA insulation meets UL 94 V0 flammability requirements—making it a reliable choice for industrial wiring where safety and long-term stability are non-negotiable.

Highlights

• Nominal cross section 2.5 mm² with rated current up to 24 A (IEC)
• Screw connection with M3 thread and defined tightening torque 0.5–0.6 Nm
• Accepts solid conductors from 0.2 to 4 mm² and stranded from 0.2 to 2.5 mm²
• Mounts on standard DIN rail NS 35/7,5 or NS 35/15
• Operating temperature range from -60 °C to +105 °C for harsh environments

In daily use

This terminal block is engineered for quick, tool-friendly installation. The 8 mm stripping length is clearly marked on the housing, reducing preparation errors. Once the conductor is inserted, the M3 screw provides a gas-tight connection that resists loosening under vibration. The blue colour coding helps electricians quickly distinguish neutral or control circuits, reducing wiring mistakes during commissioning or maintenance. With a width of just 5.2 mm, it allows high-density packing on the DIN rail, saving valuable cabinet space.

Full specifications

• Brand: Phoenix Contact
• Model: UK 2,5 N BU
• MPN: 3003350
• EAN: 4017918099282
• Type: Feed-through terminal block
• Connection method: Screw connection
• Number of connections: 2
• Number of positions: 1
• Nominal cross section: 2.5 mm²
• Colour: Blue
• Rated voltage (IEC): 500 V
• Rated current (IEC): 24 A
• Insulating material: PA (Polyamide)
• Flammability rating: UL 94 V0
• Mounting type: DIN rail NS 35/7,5, NS 35/15
• Stripping length: 8 mm
• Screw thread: M3
• Tightening torque: 0.5 - 0.6 Nm
• Conductor cross section solid: 0.2 mm² - 4 mm²
• Conductor cross section stranded: 0.2 mm² - 2.5 mm²
• Conductor cross section AWG: 24 - 12 AWG
• Operating temperature: -60 °C to 105 °C

Final note

A dependable feed-through terminal block that combines high current handling, robust screw clamping, and a compact blue housing—ideal for professional control cabinet wiring and industrial automation.