PHONEIX CONTACT MTK Knife Disconnect Terminal Block

Overview

The Phoenix Contact MTK Knife Disconnect Terminal Blocks are designed for safe and efficient circuit disconnection in electrical systems. With a unique knife-disconnect mechanism, these terminal blocks allow users to isolate individual circuits without interrupting the rest. The blocks feature tool-free wire connections, high current handling, and are compact, making them suitable for various industrial applications. They are built for reliability, with robust materials ensuring safety, fire protection, and compliance with international standards.

Technical Specifications:

Product Type: Disconnect terminal block
Number of Connections: 2
Number of Rows: 1
Potentials: 1
Article Revision: 08
Overvoltage Category: III
Degree of Pollution: 3
Rated Surge Voltage: 6 kV
Maximum Power Dissipation: 0.77 W

Electrical Characteristics:

Nominal Current: 16 A (with 4 mm² conductor cross-section)
Maximum Load Current: 16 A (with 4 mm² conductor cross-section)
Nominal Voltage: 400 V (up to 690 V for pollution degree II)
Nominal Cross Section: 2.5 mm²

Conductor and Wiring:

Screw Thread: M3
Tightening Torque: 0.5 – 0.6 Nm
Stripping Length: 7 mm
Conductor Cross-Section (Rigid): 0.2 mm² to 4 mm²
Conductor Cross-Section (Flexible): 0.2 mm² to 2.5 mm²
Connection Standard: IEC 60947-7-1

Physical Dimensions:

Width: 5.2 mm
Height: 46 mm
Depth (NS 32): 56.5 mm
Depth (NS 35/7.5): 51.5 mm
Depth (NS 35/15): 59 mm
Color: Gray (RAL 7042)
Flammability Rating: UL 94 V0

Thermal & Environmental Performance:

Static Insulating Material: -60 °C
Temperature Index (UL 746 B): 130 °C
Fire Protection: Meets DIN EN 45545-2 (R22 HL 1 – HL 3)
Surge Voltage Test: Passed at 7.3 kV
Temperature Rise Test: Passed (≤ 45 K)
Short-Time Withstand Current: 0.18 kA for 1.5 mm² conductor – passed

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