Contacteur,disjoncteur,onduleur solaire,compteur électrique,batteries solaires
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 | Signification |
| 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 | Configuration des contacts auxiliaires: 1 normalement ouvert + 1 normalement fermé |
| 13/25 | Coil voltage code: 13 = 380-400VAC, 25 = 220-240VAC |
| 380V50/60HZ | Rated coil voltage and frequency |
III. Paramètres techniques de base
- Paramètres électriques
| Élément de paramètre | Valeur | Remarques |
| Courant de fonctionnement nominal (AC-3, 400V) | 38UN | Controlled motor power: 18.5kw (50HZ) / 20hp (60HZ) |
| Courant de fonctionnement nominal (AC-1, 400V) | 50UN | Charge résistive |
| Tension d'isolation nominale (Interface utilisateur) | 690V | IEC standard |
| Rated Working Voltage (Ue) | 400V (AC-3), 690V (AC-1) | |
| Control Coil Voltage | 220-240ACC, 380-400ACC, 110ACC, 24VAC/DC, etc.. | Plusieurs options disponibles |
| Coil Frequency | 50/60HZ | Universal design, no adjustment required |
| Durée de vie mécanique | ≥10 million operations | |
| Electrical Service Life (AC-3) | ≥1 million operations | Under rated load |
- Caractéristiques physiques
| Élément de paramètre | Valeur |
| Méthode de montage | DIN rail mounting (35mm standard rail), slider design for one-hand disassembly |
| Dimensions hors tout (mm) | Approximately 85×105×55 (Width × Height × Depth) |
| Poids | Approximately 0.5kg |
| Classe de protection | IP20 (main body), IP00 for terminal blocks |
| Température ambiante | -25℃~+55℃ (operation), -40℃~+85℃ (storage) |
| Pollution Degree | Degree 3 |
- Core Product Features
- Conception compacte: Small size, économie 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 unités), mechanical interlocks, time-delay heads and surge suppressors can be added.
- Scénarios d'application typiques
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 | Tension de bobine | Contacts auxiliaires | Ordering Code | Status |
| A2X38-30-01 380V | 380ACC | 0 normalement ouvert + 1 normalement fermé | 10221469 | Discontinué |
| A2X38.2-30-11-13 | 380-400ACC | 1 normalement ouvert + 1 normalement fermé | 10242059 | Currently in Production |
| A2X38.2-30-11-25 | 220-240ACC | 1 normalement ouvert + 1 normalement fermé | 10242060 | Currently in Production |
| A2X38.2-30-00-13 | 380-400ACC | No auxiliary contacts | 10242058 | Currently in Production |
VII. Installation and Wiring Specifications
Étapes d'installation:
- 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:
Circuit principal: M6 bolts, suitable for copper core wires with cross-sectional area of 1.5-16mm²
Circuit de commande: 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 | Remarques |
| 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
| Phénomène de défaut | Causes possibles | 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; Câblage lâche | 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.
- Inspection régulière: Conduct inspection every 6 mois, 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.
- Exigences environnementales: 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.
