Phoenix 3210301 PT 1,5/S-MT Knife Disconnect Terminal Block, Push-in, 1.5 mm², Grey

In control cabinets and distribution boxes, safe isolation of circuits is essential for maintenance and troubleshooting. The Phoenix 3210301 PT 1,5/S-MT knife disconnect terminal block provides a compact, tool-free solution for disconnecting signal and power lines without rewiring. Its push-in connection technology allows solid or stranded conductors to be inserted directly, reducing installation time and ensuring vibration-resistant connections.

Who is it for

This terminal block is ideal for panel builders, machine manufacturers, and maintenance technicians who need reliable circuit isolation in industrial control systems, building automation, or process technology. It suits applications where space is limited but performance cannot be compromised.

Main features

• Knife disconnect function enables quick circuit separation with a standard screwdriver
• Push-in connection for tool-free wiring of solid and stranded conductors
• Rated for 500 V and 17.5 A, suitable for a wide range of signal and low-power circuits
• Compact design with 1.5 mm² nominal cross section, ideal for dense DIN rail assemblies
• Grey polyamide housing, halogen-free and flame-retardant (UL 94 V0)
• Mounts on standard NS 35/7.5 or NS 35/15 DIN rails

Specifications

• Type: Knife disconnect terminal block
• Connection method: Push-in
• Number of positions: 2
• Number of levels: 1
• Nominal cross section: 1.5 mm²
• Nominal voltage (IEC): 500 V
• Nominal current (IEC): 17.5 A
• Rated surge voltage: 6 kV
• Insulating material: Polyamide (PA)
• Colour: Grey
• Mounting type: DIN rail NS 35/7.5, NS 35/15
• Conductor cross section solid: 0.14 – 1.5 mm²
• Conductor cross section stranded: 0.14 – 1.5 mm²
• AWG size: 26 – 16
• Stripping length: 8 – 10 mm
• Operating temperature: -60 °C to 105 °C
• Flammability rating: UL 94 V0
• Pollution degree: 3

Tips

For reliable push-in connections, use conductors with ferrules or ensure stranded wires are twisted tightly before insertion. To disconnect the circuit, insert a screwdriver into the designated slot and lever the knife contact open. Always verify that the circuit is de-energized before operating the disconnect function.