Phoenix Contact PT 2,5-MTB Knife Disconnect Terminal Block

The Phoenix Contact PT 2,5-MTB knife disconnect terminal block provides a compact push-in connection system for DIN rail mounting, enabling tool-free wiring and reliable circuit isolation in industrial control panels. Its knife disconnect mechanism allows quick and safe disconnection of circuits for testing and maintenance without removing conductors.

Advantages

The push-in technology reduces wiring time by up to 50% compared to screw connections, accepting solid and flexible conductors with ferrules. The knife disconnect offers clear visual status indication and can be operated with a standard screwdriver. The terminal block is made of flame-retardant polyamide (UL 94 V0) for enhanced safety, and its compact 5.2 mm width saves space on the DIN rail.

Suitable for

• Industrial control panels and switchgear
• Signal and control circuit isolation
• Test and measurement setups requiring frequent disconnection
• Applications with vibration where screw connections may loosen
• DIN rail assemblies in automation and process control

Key specifications

• Connection technology: Push-in
• Nominal cross section: 2.5 mm²
• Rated voltage (IEC): 500 V
• Rated current (IEC): 20 A
• Number of connections: 2
• Mounting type: DIN rail NS 35/7,5 or NS 35/15
• Disconnect type: Knife disconnect
• Colour: Grey
• Insulating material: Polyamide (PA)
• Stripping length: 10 mm
• Conductor cross section solid: 0.14–4 mm²
• Conductor cross section flexible: 0.14–2.5 mm²
• AWG range: 26–12
• Operating temperature: -60 °C to 105 °C
• Flammability rating: UL 94 V0
• Pollution degree: 3
• Overvoltage category: III

Recommendations

For optimal performance, use ferrules on flexible conductors to ensure reliable push-in connections. Verify that the DIN rail type matches NS 35/7,5 or NS 35/15. Always de-energize the circuit before operating the knife disconnect. Pair with Phoenix Contact end brackets and partition plates for a complete installation.