Phoenix Contact URTK_S Test Disconnect Terminal Block

Technical Overview

400V, 41A test disconnect terminal block with 4mm test sockets for CT secondary circuits. Operates from -60°C to 110°C, UL 94 V0, DIN EN 45545-2 compliant.

Key Features

Test sockets on both sides of the disconnect point enable circuit measurement without interruption.
4 mm test sockets can also bridge across to adjacent terminal blocks for flexible test configurations.
Wide -60°C to 110°C operating range suits demanding industrial and process environments.
UL 94 V0 rated PA insulation with DIN EN 45545-2 compliance for railway and rolling stock applications.
Screw connection ensures secure and reliable wiring.
Accommodates conductor cross-sections from 0.5 mm² to 10 mm² rigid (AWG 20-8).
Universal foot allows easy snapping onto NS 35/7.5, NS 35/15, or NS 32 DIN rail profiles.

Technical Specification Matrix

Parameter	Value
Nominal Voltage	400 V
Nominal Current	41 A
Maximum Load Current	57 A (with 10 mm² conductor cross-section)
Rated Surge Voltage	6 kV
Overvoltage Category	III
Degree of Pollution	3
Nominal Cross Section	6 mm²
Conductor Cross-Section Rigid	0.5 mm² - 10 mm² (AWG 20-8)
Conductor Cross-Section Flexible	0.5 mm² - 6 mm² (AWG 20-10)
Connection Method	Screw connection
Screw Thread	M4
Tightening Torque	1.2 - 1.5 Nm
Stripping Length	13 mm
Mounting Type	NS 35/7.5, NS 35/15, NS 32 (DIN rail)
Color	Gray (RAL 7042)
Insulating Material	PA (Polyamide)
Flammability Rating	UL 94 V0
Operating Temperature	-60°C to 110°C
Physical Weight (kg)	0.03
Dimensions L x W x H (cm)	5.9 x 0.82 x 7.2

Industrial Applications

1. Current Transformer Secondary Circuit Testing

This terminal block is ideally suited for safe and efficient testing in current transformer secondary circuits within electrical panels and switchgear. Its integrated test disconnect function and 4 mm test sockets allow for circuit measurement and verification without interrupting the main current path.

Problem Solved

Provides a secure and easily accessible method to disconnect and test current transformer secondary circuits, enhancing safety and reducing downtime during maintenance or commissioning.

Current TransformerSecondary CircuitTest Disconnect4mm Test PlugsElectrical TestingSwitchgear

2. Protection Relay Commissioning in Industrial Control Panels

The URTK/S is perfect for the commissioning and troubleshooting of protection relays in industrial control and power distribution panels. Its 400V/41A rating and disconnect feature facilitate safe injection of test currents/voltages and signal verification without impacting the primary operational circuit.

Problem Solved

Enables safe and isolated testing of protection relay circuits, preventing accidental tripping or damage to equipment during setup and diagnostic procedures.

Protection RelayCommissioningIndustrial ControlPower DistributionTest Access400V41A

3. Railway Rolling Stock Control and Signalling Panels

With its UL 94 V0 rated PA insulation and compliance with DIN EN 45545-2 for railway applications, this terminal block is highly suitable for control and signalling systems in trains and other rolling stock. The wide operating temperature range (-60°C to 110°C) ensures reliable performance in harsh railway environments.

Problem Solved

Offers a robust and safety-compliant connection solution for critical railway applications, enduring extreme temperatures and meeting stringent fire safety standards for passenger and operational safety.

Railway Rolling StockControl PanelsSignalling SystemsDIN EN 45545-2-60°C to 110°CUL 94 V0