ABB Contactor A2X38.2-30-11-25

Basic Overview

ABB A2X38/A2X38.2 is a 3-pole AC contactor belonging to the ABB Formula series. A2X38 is an earlier model (discontinued), while A2X38.2 is its upgraded replacement (currently in production). It is mainly used for controlling three-phase squirrel-cage motors and other power loads, and is suitable for industrial automation and building electrical systems. Ordering Code: 2TFC200010R2511

Model Code Explanation

Model Segment	Meaning
A2X	Formula series contactor with compact and cost-effective design
38	Rated operating current of 38A (AC-3, 400V)
0.2	Second-generation upgraded version (improved type)
30	3-pole main contacts, normally open configuration
11	Auxiliary contact configuration: 1 normally open + 1 normally closed
13/25	Coil voltage code: 13 = 380-400VAC, 25 = 220-240VAC
380V50/60HZ	Rated coil voltage and frequency

Ⅲ. コア技術パラメータ

Electrical Parameters

Parameter Item	Value	Remarks
Rated Operating Current (AC-3, 400V)	38あ	Controlled motor power: 18.5kW (50Hz) / 20hp (60Hz)
Rated Operating Current (AC-1, 400V)	50あ	Resistive load
Rated Insulation Voltage (Ui)	690V	IEC standard
Rated Working Voltage (うえ)	400V (AC-3), 690V (AC-1)
Control Coil Voltage	220-240VAC, 380-400VAC, 110VAC, 24VAC/DC, 等.	Multiple options available
Coil Frequency	50/60Hz	Universal design, no adjustment required
Mechanical Service Life	≥10 million operations
Electrical Service Life (AC-3)	≥1 million operations	Under rated load

Physical Characteristics

Parameter Item	Value
Mounting Method	DIN rail mounting (35mm standard rail), slider design for one-hand disassembly
Overall Dimensions (mm)	Approximately 85×105×55 (Width × Height × Depth)
重さ	Approximately 0.5kg
Protection Class	IP20 (main body), IP00 for terminal blocks
Ambient Temperature	-25℃~+55℃ (operation), -40℃~+85℃ (storage)
Pollution Degree	Degree 3

Core Product Features
Compact Design: Small size, saving 30% of installation space, suitable for high-density distribution cabinets.
High Efficiency and Reliability: Silver alloy contacts with arc resistance, low contact resistance and long service life.
Easy Installation: Quick snap-on fixing, auxiliary contact modules can be directly clipped without tools.
Safety Assurance: Flame-retardant engineering plastic housing complying with UL94 V0 standard, built-in surge suppression (for some models).
Modular Expansion: Accessories such as auxiliary contacts (up to 4 単位), mechanical interlocks, time-delay heads and surge suppressors can be added.
典型的なアプリケーションシナリオ

Direct start and stop control of three-phase asynchronous motors (≤18.5kW/400V)

Electrical control of equipment such as fans, water pumps and compressors

Switch control of non-motor loads such as heating and lighting systems

Building electrical systems and industrial automation production lines

Replacement of old contactors for equipment upgrading and transformation

Complete Model and Ordering Information

Complete Model	Coil Voltage	Auxiliary Contacts	Ordering Code	Status
A2X38-30-01 380V	380VAC	0 normally open + 1 normally closed	10221469	Discontinued
A2X38.2-30-11-13	380-400VAC	1 normally open + 1 normally closed	10242059	Currently in Production
A2X38.2-30-11-25	220-240VAC	1 normally open + 1 normally closed	10242060	Currently in Production
A2X38.2-30-00-13	380-400VAC	No auxiliary contacts	10242058	Currently in Production

Ⅶ. Installation and Wiring Specifications

Installation Steps:

Confirm that the installation environment meets the range of -25℃~+55℃, free from severe vibration and corrosive gases.
Select a 35mm standard DIN rail and ensure the mounting surface is flat.
Align the contactor’s snap with the rail, press down and slide to fix (one-hand operation).
Cut off all power supplies before wiring, and use a multimeter to confirm no voltage exists.
Main circuit wiring: L1/L2/L3 → input terminals, T1/T2/T3 → output terminals.
Control circuit wiring: A1/A2 → coil power supply, 13/14 → normally open auxiliary contacts, 21/22 → normally closed auxiliary contacts.
After wiring is completed, gently pull the wires to confirm they are connected firmly without loosening.

Terminal Block Specifications:

Main circuit: M6 bolts, suitable for copper core wires with cross-sectional area of 1.5-16mm²

Control circuit: M3.5 bolts, suitable for copper core wires with cross-sectional area of 0.5-2.5mm²

VIII. Replacement Models and Compatibility

Original Model	Direct Replacement Model	Upgraded Replacement Series	Remarks
A2X38	A2X38.2	AF38 Series	A2X38.2 is fully compatible with A2X38 in terms of installation dimensions and electrical performance
A2X38.2	AF38-30-xx-xx	AF Series	AF series has advantages such as electronic coil (wide voltage range) and built-in surge suppression
	AX38-30-xx	AX Series	Equivalent performance with slightly higher price

Troubleshooting Guide

Fault Phenomenon	Possible Causes	Solutions
Contactor fails to pull in	No voltage/low voltage on coil; Coil burnout; Mechanical jamming	Check the control circuit; Measure coil resistance (approximately several hundred ohms under normal condition); Clean foreign objects and lubricate moving parts
Excessive noise after pull-in	Low coil voltage; Oil stain/rust on iron core end face; Broken short-circuit ring	Adjust control voltage to rated value; Clean iron core end face; Replace coil assembly
Contact overheating/ablation	Load overload; Poor contact of contacts; Loose wiring	Check load current; Polish contacts or replace them; Re-tighten terminal blocks
Auxiliary contact failure	Contact wear; Wiring error	Replace auxiliary contact module; Check wiring polarity

Safety and Maintenance Precautions
Power-off Operation: Cut off all power supplies before installation and maintenance, and hang the “No Switching On” sign.
Regular Inspection: Conduct inspection every 6 月, including contact wear, terminal tightness and coil temperature.
Contact Replacement: Replace the main contacts in time when the wear amount exceeds 1mm or the surface is severely ablated.
環境要件: Avoid use in humid and dusty environments; install a protective housing if necessary.
Compatible Accessories: Only use auxiliary contacts, interlock devices and other accessories original or certified by ABB to ensure safety performance.