Eaton TX series cam switch and PX series load isolation switch

Eaton TX Cam Switch and PX Load Isolation Switch Complete Technical Guide

Introduction: Core components of industrial electrical control

In industrial electrical control systems, cam switches and load isolation switches serve as manually operated control and isolation components, responsible for key functions such as circuit on/off, equipment switching, and safety isolation. As a global leader in power management, Eaton's TX series cam switches and PX series load isolation switches are widely used in mechanical manufacturing, building electrical, industrial automation, and other fields due to their excellent performance, reliable quality, and flexible combination methods.

This article is based on Eaton's official Chinese product catalog, providing a comprehensive analysis of the technical characteristics, model composition, installation methods, accessory selection, and application points of TX cam switches and PX load isolation switches. It provides a professional and detailed technical reference for electrical engineers, system integrators, and equipment maintenance personnel.

Chapter 1 Overview of Product Series

1.1 Product positioning and certification

The TX cam switch and PX load isolation switch are electrical control products designed by Eaton specifically for industrial, handicraft, and building service management. Both series share the following common characteristics:

Front panel protection level: IP65, suitable for harsh environments such as high dust and humidity

International certifications: CCC (China Compulsory Certification), CE (European Union Safety Certification)

Modular design: Flexible combination of contact modules and installation accessories according to requirements

Environmentally friendly materials: free of PCB, CFC, asbestos, and silicon, and the contacts do not contain cadmium

1.2 Product Series Comparison

Series Type Power Range Current Range Main Applications

TX cam switch to 55kW to 100A control circuit, instrument selection, stepper control

PX load isolation switch to 55kW to 175A main switch, maintenance switch, safety isolation

1.3 Basic switch types

Two series offer a total of ten basic switch types, covering the vast majority of application scenarios:

Main switch/maintenance switch/forced manual control switch

on-off switch

changeover switch

turn signal switch

Multi speed switch

Step switch

Control switch (on/off/switch/manual automatic/on)

General control switch

Instrument selection switch

Safety switch with interlock function

Chapter 2 Detailed Analysis of TX Cam Switch

2.1 Overview of Technical Specifications

The TX series cam switch is divided into multiple sub series based on current capacity:

Model Rated continuous current (Iu) Maximum number of contact modules Single contact depth Mechanical life (10000 cycles)

T0X 20 A up to 11 pieces 9.5 mm 40

T3X 32 A up to 11 11.5 mm 40

T5XB 63 A up to 10 16.5 mm 40

T5X 100 A up to 10 16.5 mm 40

2.2 Electrical Performance Parameters

T0X cam switch

Rated connection capacity (cos φ=0.35): 130 A

Rated breaking capacity (motor load):

230 V：100 A

400 V：110 A

500 V：80 A

690 V：60 A

Motor power (AC-23A load):

230 V：4 kW

400/415 V：6.5 kW

500 V：6.5 kW

690 V：4 kW

T3X cam switch

Rated connection capacity (cos φ=0.35): 320 A

Rated breaking capacity (motor load):

230 V：400 A

400 V：500 A

500 V：450 A

690 V：250 A

Motor power (AC-23A load):

230 V：7.5 kW

400/415 V：13 kW

500 V：13 kW

690 V：11 kW

T5XB/T5X cam switch

Rated connection capacity (cos φ=0.35):

T5XB：800 A

T5X：950 A

Motor power (AC-23A load, 400/415 V):

T5XB：22 kW

T5X：30 kW

2.3 DC application parameters

For DC-23A load (L/R=15ms):

T0X cam switch

24 V: 6 A (1 contact module)

48 V: 4 A (2 contact modules in series)

60 V: 3 A (3 contact modules in series)

120 V: 2 A (3 contact modules in series)

240 V: 1 A (5 contact modules in series)

T3X cam switch

24 V: 16 A (1 contact module)

48 V: 10A (2 contact modules in series)

60 V: 8 A (3 contact modules in series)

120 V: 4 A (4 contact modules in series)

240 V: 2 A (6 contact modules in series)

Chapter 3 Detailed Analysis of PX Load Isolation Switch

3.1 Overview of Technical Specifications

The PX series load isolation switch is divided into multiple sub series based on current capacity:

Model Rated continuous current (Iu) Maximum power (AC-23A, 400V) Mechanical life (10000 cycles)

P1X-25 25 A 7.5 kW 10

P1X-32 32 A 13 kW 10

P3X-63 63 A 22 kW 3

P3X-100 100 A 30 kW 3

P5X-125 125 A 45 kW 3

P5X-175 175 A 55 kW 3

3.2 Electrical Performance Parameters

P1X series (25A/32A)

Rated working voltage: 690 VAC

Rated impulse withstand voltage: 6000 VAC

Overvoltage category/pollution level: III/3

Short circuit rating (fuse):

P1X-25：25 A gG/gL

P1X-32：50 A gG/gL

Rated short-time withstand current (1 second): 640 A rms

Wiring capacity: 1 × (1.5-6) mm ² or 2 × (1.5-6) mm ²

Tightening torque of wiring screw: 1.6 Nm

P3X series (63A/100A)

Rated working voltage: 690 VAC

Rated impulse withstand voltage: 6000 VAC

Short circuit rating (fuse):

P3X-63：80 A gG/gL

P3X-100：100 A gG/gL

Rated short-time withstand current (1 second): 1300 A rms

Wiring capacity: 2 × (1.5-6) mm ²

P5X series (125A/175A)

Rated working voltage: 690 VAC

Rated impulse withstand voltage: 8000 VAC

Short circuit rating (fuse):

P5X-125：125 A gG/gL