Phoenix Contact UK 5-MTK Knife-Disconnect Terminal Block

Technical Overview

500V/16A knife-disconnect terminal block for DIN rail mounting, featuring screw connections and supporting 0.2-6mm² conductors. Ideal for circuit isolation.

Key Features

Knife-disconnect function for safe circuit isolation
Screw connection method for secure and reliable wiring
Wide conductor cross-section range from 0.2 mm² to 6 mm²
Compatible with multiple DIN rail types (NS 35/7.5, NS 35/15, NS 32)
Single-level design
Gray housing (RAL 7042)
Flammability rating V0 according to UL 94

Technical Specification Matrix

Parameter	Value
Nominal Voltage	500 V
Nominal Current (Ith)	16 A
Connection Method	Screw connection
Number of Levels	1
Number of Connections	2
Rated Cross Section	4 mm²
Conductor Cross Section Range	0.2 mm² - 6 mm²
Maximum Flexible Conductor Cross Section	4 mm²
Maximum Inflexible Conductor Cross Section	6 mm²
Stripping Length	8 mm
Mounting Type	DIN rail mount (NS 35/7.5, NS 35/15, NS 32)
Color	Gray (RAL 7042)
Flammability Rating (UL 94)	V0
Insulation Material	PA
Rated Surge Voltage	6 kV
Surge Voltage Test Setpoint	7.3 kV
Maximum Power Dissipation	1.02 W
Ambient Temperature (Operation)	-60 °C to 110 °C
Physical Weight (kg)	0.01
Dimensions L x W x H (cm)	5.85 x 0.62 x 5.1

Industrial Applications

1. Industrial Control Panel Maintenance and Troubleshooting

This knife-disconnect terminal block is ideal for safely isolating individual circuits within industrial control panels during maintenance, troubleshooting, or system upgrades without affecting other operational circuits. Its 500V/16A rating ensures it can handle typical control voltages and currents.

Problem Solved

Prevents accidental energization and allows for safe, localized power interruption for specific equipment or components, enhancing worker safety and minimizing downtime for the overall system.

Circuit isolationindustrial controlmaintenance safetytroubleshooting500V16A

2. Machine Emergency Stop Circuit Break

In machine safety systems, this terminal block can be employed to provide a clear, physical disconnect point for emergency stop circuits. The knife-disconnect feature offers visual confirmation of circuit interruption, crucial for safety interlocks and lockout/tagout procedures.

Problem Solved

Provides a highly reliable and visually verifiable means of breaking critical safety circuits, meeting stringent industrial safety requirements for immediate and secure machine shutdown.

Emergency stopsafety circuitphysical disconnectlockout/tagoutvisual confirmationindustrial safety

3. Test and Measurement Points in Automation Systems

The UK 5-MTK can serve as convenient, robust test and measurement points in complex automation systems. Its screw connection allows for easy and secure connection of test leads, while the disconnect function facilitates the isolation of a circuit for in-line current or voltage measurements without unwiring the entire circuit.

Problem Solved

Enables efficient and safe diagnostic testing of operational circuits by providing accessible, reliable connection points and the ability to temporarily interrupt a circuit for measurement, reducing diagnostic time and potential for errors.

Test pointmeasurementautomation diagnosticscircuit isolationscrew connection0.2-6mm² wire