3070338

Phoenix Contact USST 4 Spring-Assisted Screw Terminal Block

USST 4 spring-assisted screw-type terminal block, rated 1000V/32A, wire range 0.2-6 square millimeters, screw-locked with spring support to prevent loosening, suitable for NS35/NS32 rails, gray single-layer double-hole design.

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Phoenix Contact USST 4 Spring-Assisted Screw Terminal Block

Product Positioning

USST 4 is part of the Phoenix Contact screw terminal block series. It incorporates a spring support structure under the screw, combining the convenience of screw-type wiring with the anti-loosening effect of springs, making it suitable for power wiring applications in vibration environments.

Core Product Advantages and Features

Spring-assisted anti-loosening structure

A spring support is added below the screw connection to maintain wiring pressure even under long-term vibration, reducing the risk of loosening.

Wide conductor compatibility range

It accepts wires from 0.2 to 6 square millimeters, covering a variety of power and signal wiring needs for control boxes.

High pressure and flow resistance design

With a rated voltage of 1000V and a rated current of 32A, it is suitable for use as a power input terminal.

Compatible installation of multiple guide rails

It can be installed on NS35/7.5, NS35/15 or NS32 standard DIN rails, offering high installation flexibility.

project	Specification
model	USST 4
Rated voltage	1000 V
Rated current	32 A
Connectable wire range	0.2-6 mm²
Connection method	Screw-type (with spring support)
Applicable guide rails	NS35/7.5, NS35/15, NS32

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