Phoenix Contact PTI 2.5 Push-In Installation Terminal Block, 2-Level, 2.5 mm², 500 V, 24 A, DIN Rail, Gray

When panel space is at a premium, the PTI 2.5 two-level terminal block from Phoenix Contact delivers a compelling solution. Unlike conventional single-level blocks that consume valuable rail width, this unit stacks two independent connection levels within a slim 5.2 mm housing. The result is doubled wiring density without sacrificing clarity or safety—an essential advantage in modern control cabinets, building automation, and machine building. Its push-in termination technology eliminates the need for special tools, allowing solid conductors or ferruled stranded wires to be inserted directly with an audible click, reducing installation time by up to 50% compared to screw-clamp terminals.

Highlights

• Push-in termination: simply insert solid conductors or ferruled stranded wires without tools.
• Two-level design: two separate potential levels in one narrow housing, saving space on the rail.
• Wide conductor range: accepts 0.14 mm² to 4 mm² solid and 0.14 mm² to 2.5 mm² stranded conductors.
• High electrical ratings: 24 A current, 500 V voltage, 6 kV surge withstand.
• Robust materials: polyamide housing with UL 94 V0 flammability rating, operating from -60 °C to +105 °C.
• DIN rail mounting: fits standard NS 35/7.5 and NS 35/15 rails for quick installation.

In daily use

In a crowded control panel, every millimeter counts. The PTI 2.5's slim 5.2 mm profile allows more terminations per meter, while the clear gray housing and large marking surfaces keep wiring organized. Electricians appreciate the audible click when a conductor is fully inserted, providing immediate confirmation of a secure connection. The two-level arrangement simplifies wiring of sensors and actuators, reducing the number of terminal blocks required and streamlining maintenance. With its high current and voltage ratings, it handles a wide range of industrial loads reliably.

Full specifications

• Connection method: Push-in
• Nominal cross section: 2.5 mm²
• Number of levels: 2
• Number of potentials: 1 (L)
• Rated voltage (IEC): 500 V
• Rated current (IEC): 24 A
• Rated surge voltage: 6 kV
• Mounting type: DIN rail NS 35/7.5, NS 35/15
• Insulating material: PA (Polyamide)
• Flammability rating: UL 94 V0
• Colour: Gray
• Min. solid conductor cross section: 0.14 mm²
• Max. solid conductor cross section: 4 mm²
• Min. stranded conductor cross section: 0.14 mm²
• Max. stranded conductor cross section: 2.5 mm²
• Stripping length: 8 mm - 10 mm
• Operating temperature: -60 °C to 105 °C
• Pollution degree: 3
• Overvoltage category: III

Final note

The Phoenix Contact PTI 2.5 is a space-saving, high-performance terminal block that combines push-in convenience with robust electrical specifications, making it a smart choice for demanding industrial applications.