Phoenix UK 10 N BU Feed-Through Terminal Block, Blue, Screw Connection, 10 mm², 800 V, 57 A, DIN Rail Mount

In control cabinets and distribution boxes, electricians rely on the Phoenix UK 10 N BU feed-through terminal block for secure, space-efficient wiring of power circuits up to 10 mm². This blue terminal block features a robust screw connection that clamps solid or stranded conductors with a simple turn of an M4 screw, ensuring a vibration-resistant joint for long-term reliability. Mounted on a standard DIN rail (NS 35/7.5 or NS 35/15), it integrates seamlessly into industrial installations where clear color coding and high current capacity are essential.

Key specifications

• Connection method: Screw connection with M4 thread
• Number of positions: 1 (single-level feed-through)
• Nominal cross section: 10 mm²
• Rated voltage (IEC): 800 V
• Rated current (IEC): 57 A
• Conductor cross section solid: 0.5 – 16 mm²
• Conductor cross section stranded: 0.5 – 10 mm²
• AWG range: 20 – 6
• Stripping length: 10 mm
• Color: Blue
• Housing material: Polyamide (PA), UL 94 V0 flammability rating
• Mounting type: DIN rail NS 35/7.5 or NS 35/15
• Pollution degree: 3, Overvoltage category: III
• Approvals: UL, CSA, VDE, EAC, cULus Recognized

Why choose it

The UK 10 N BU stands out for its high current rating of 57 A and wide conductor acceptance, making it suitable for demanding power distribution tasks. The blue housing provides instant visual identification for neutral or specific circuit functions, reducing wiring errors. Its screw connection technology is proven in harsh industrial environments, offering excellent mechanical retention and resistance to vibration. The polyamide housing meets UL 94 V0 flammability standards, adding an extra layer of safety in control panels.

Ideal use cases

• Power distribution in industrial control cabinets
• Feed-through connections for motor control circuits
• Building automation systems requiring high-current terminals
• Panel building where DIN rail mounting and color coding are standard
• Retrofit and maintenance projects needing reliable, reusable terminals

Good to know

This terminal block is part of Phoenix Contact's UK series, known for their compact design and high density on the DIN rail. The screw connection requires a flat-blade screwdriver and the recommended torque is 1.2 – 1.5 Nm for optimal contact. The terminal is rated for ambient temperatures up to 105°C (depending on derating). It is compatible with standard end covers and partition plates from the same series. For larger conductor cross sections, consider the UK 16 N variant.