Phoenix Contact UIK 35 Installation Terminal Block

Technical Overview

800V, 125A screw terminal for 0.75-35mm² conductors. DIN rail mount, gray. Operates from -60°C to 110°C with 8kV surge protection. Ideal for flat distributors.

Key Features

Screw connection for reliable and secure wiring.
Suitable for conductor cross-sections from 0.75 mm² to 35 mm² (AWG 18-2).
Designed for DIN rail mounting (NS 35/7.5, NS 35/15, NS 32).
Low-profile design ideal for flat distributors.
Asymmetric arrangement allows neutral busbar routing past terminal blocks.
High rated surge voltage of 8 kV ensures electrical safety.
Operating temperature range from -60 °C to 110 °C.

Technical Specification Matrix

Parameter	Value
Nominal Voltage	800 V
Nominal Current	125 A
Rated Surge Voltage	8 kV
Connection Method	Screw Connection
Rated Cross Section	35 mm²
Conductor Cross-section rigid	0.75 mm² - 35 mm² (AWG 18-2)
Conductor Cross-section flexible	0.75 mm² - 35 mm² (AWG 18-2)
Mounting Type	DIN Rail (NS 35/7,5, NS 35/15, NS 32)
Color	Gray (RAL 7042)
Number of Connections	2
Number of Levels	1
Width	15.2 mm
Height	55 mm
Depth on NS 35/15	58.5 mm
Operating Temperature Range	-60 °C ... 110 °C
Degree of Pollution	3
Overvoltage Category	III
Insulating Material	Polyamide (PA)
Flammability Rating (UL 94)	V0
Tightening Torque	3.2 ... 3.7 Nm
Stripping Length	16 mm
Physical Weight (kg)	0.04
Dimensions L x W x H (cm)	5.85 x 1.52 x 5.5

Industrial Applications

1. Power Distribution in Control Panels for Heavy Machinery

This terminal block is ideal for high-current and high-voltage power distribution within industrial control panels that manage heavy machinery. Its 800V nominal voltage and 125A nominal current, coupled with the ability to handle large conductor cross-sections (up to 35 mm²), make it suitable for connecting main power lines to various loads or sub-panels.

Problem Solved

Provides a secure, high-capacity screw connection for distributing significant electrical power, ensuring reliable and safe operation of robust industrial equipment while being efficiently mounted on DIN rails.

High currentHigh voltagePower distributionControl panelDIN railScrew connection

2. Wiring in HVAC Systems for Commercial Buildings

Given its 800V/125A ratings and -60°C to 110°C operating temperature range, this terminal block can be used for wiring high-power components in commercial HVAC systems, which often involve varying ambient temperatures. The low-profile design is advantageous for installation in space-constrained flat distributors common in building infrastructure.

Problem Solved

Offers a robust and reliable connection solution for demanding HVAC power circuits, capable of enduring a wide temperature range and fitting into compact distribution enclosures.

HVAC systemsCommercial buildingsWide temperature rangeLow-profileFlat distributorsHigh current

3. Main Line Termination in Factory Automation Systems

The UIK 35 is well-suited for terminating main power lines in factory automation setups where multiple machines draw power from a central distribution point. Its ability to accept rigid and flexible conductors up to 35 mm² and its secure screw connection ensure stable and vibration-resistant power delivery, crucial for continuous industrial operations.

Problem Solved

Facilitates safe and efficient termination of high-power feeders, providing a reliable connection point that can withstand industrial environments and support heavy electrical loads for automated production lines.

Factory automationMain power linesConductor terminationScrew connectionHigh currentReliable power