Phoenix Contact PTI 16/S BU Installation Terminal Block, Push-in, 16 mm², Blue

Electricians and panel builders often need a reliable, space-saving connection point for power distribution inside control cabinets. The Phoenix Contact PTI 16/S BU installation terminal block answers that need with a push-in connection system that accepts solid or stranded conductors up to 16 mm² without tools. Its blue housing clearly identifies the neutral conductor per IEC 60445, reducing wiring errors during assembly or maintenance. The block snaps onto standard 35 mm DIN rails (NS 35/7.5 or NS 35/15) and handles up to 76 A at 1000 V, making it suitable for industrial power circuits.

Key specifications

• Connection technology: Push-in (tool-free for solid conductors; stranded wires require a screwdriver to open the spring)
• Nominal cross section: 16 mm²
• Conductor range: 0.5–16 mm² solid or stranded; 20–6 AWG
• Rated voltage/current (IEC): 1000 V / 76 A
• Number of connections: 2 (one input, one output)
• Number of positions: 1
• Mounting: DIN rail NS 35/7.5 or NS 35/15
• Insulating material: Polyamide (PA), UL 94 V0 flammability rating
• Operating temperature: -60 °C to +105 °C
• Stripping length: 12 mm
• Pollution degree: 3; Overvoltage category: III
• Colour: Blue (neutral conductor marking)

Why choose it

The push-in termination saves time on every wire: solid conductors simply insert and lock, while stranded wires use a standard screwdriver to open the spring cage. The 16 mm² capacity covers most power distribution needs, and the 76 A rating handles high-current loads without derating. The blue colour follows international wiring standards, so your panel remains code-compliant and easy to audit. The compact one-position design keeps rail space free for other components.

Ideal use cases

• Neutral conductor distribution in industrial control panels and switchgear
• Power feed-through for motor starters, frequency drives, and PLC I/O modules
• Building installation distribution boards where high current and clear colour coding are required
• Retrofit or expansion of existing DIN rail assemblies

Good to know

The terminal block is part of Phoenix Contact's PTI series, known for robust spring connections and long service life. It is rated for pollution degree 3, meaning it can operate in environments with conductive pollution or occasional condensation. The polyamide housing is halogen-free and flame-retardant to UL 94 V0, contributing to fire safety in enclosures. For stranded conductors, always use a properly sized screwdriver to avoid damaging the spring mechanism.