Contactor,întrerupător de circuit,invertor solar,contor electric,baterii solare
Basic Overview
ABB A2X38/A2X38.2 is a 3-contactor AC poli 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
| Segmentul de model | Sens |
| 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 deschis în mod normal + 1 în mod normal închis |
| 13/25 | Coil voltage code: 13 = 380-400VAC, 25 = 220-240VAC |
| 380V50/60HZ | Rated coil voltage and frequency |
III. Parametrii tehnici de bază
- Parametrii electrici
| Element de parametru | Valoare | Observații |
| Curent nominal de operare (AC-3, 400V) | 38O | Controlled motor power: 18.5kW (50Hz) / 20hp (60Hz) |
| Curent nominal de operare (AC-1, 400V) | 50O | Sarcină rezistivă |
| Tensiune nominală de izolație (Ui) | 690V | IEC standard |
| Tensiune nominală de lucru (Ue) | 400V (AC-3), 690V (AC-1) | |
| Tensiunea bobinei de control | 220-240VAC, 380-400VAC, 110VAC, 24VAC/DC, etc. | Opțiuni multiple disponibile |
| Coil Frequency | 50/60Hz | Universal design, no adjustment required |
| Durată de viață mecanică | ≥10 million operations | |
| Durată de viață electrică (AC-3) | ≥1 million operations | Under rated load |
- Caracteristici fizice
| Element de parametru | Valoare |
| Metoda de montare | Montare pe șină DIN (35mm șină standard), slider design for one-hand disassembly |
| Dimensiuni generale (mm) | Approximately 85×105×55 (Width × Height × Depth) |
| Greutate | Approximately 0.5kg |
| Clasa de protectie | IP20 (main body), IP00 for terminal blocks |
| Temperatura ambiantă | -25℃~+55℃ (operation), -40℃~+85℃ (storage) |
| Gradul de poluare | Degree 3 |
- Caracteristicile de bază ale produsului
- Design compact: Small size, economisire 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.
- Instalare ușoară: 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 (pentru unele modele).
- Extindere modulară: Accessories such as auxiliary contacts (până la 4 unitati), mechanical interlocks, time-delay heads and surge suppressors can be added.
- Scenarii tipice de aplicare
Controlul direct de pornire și oprire a motoarelor asincrone trifazate (≤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 | Tensiunea bobinei | Contacte auxiliare | Ordering Code | Status |
| A2X38-30-01 380V | 380VAC | 0 deschis în mod normal + 1 în mod normal închis | 10221469 | Discontinued |
| A2X38.2-30-11-13 | 380-400VAC | 1 deschis în mod normal + 1 în mod normal închis | 10242059 | Currently in Production |
| A2X38.2-30-11-25 | 220-240VAC | 1 deschis în mod normal + 1 în mod normal închis | 10242060 | Currently in Production |
| A2X38.2-30-00-13 | 380-400VAC | No auxiliary contacts | 10242058 | Currently in Production |
VII. Installation and Wiring Specifications
Etape de instalare:
- 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.
- Cablajul circuitului principal: L1/L2/L3 → input terminals, T1/T2/T3 → output terminals.
- Cablajul circuitului de control: A1/A2 → coil power supply, 13/14 → normally open auxiliary contacts, 21/22 → normally closed auxiliary contacts.
- După finalizarea cablajului, gently pull the wires to confirm they are connected firmly without loosening.
Terminal Block Specifications:
Circuitul principal: M6 bolts, suitable for copper core wires with cross-sectional area of 1.5-16mm²
Circuit de control: 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 | Observații |
| 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
| Fenomen de eroare | Cauze posibile | Soluții |
| Contactor fails to pull in | No voltage/low voltage on coil; Coil burnout; Blocaj mecanic | Check the control circuit; Măsurați rezistența bobinei (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 |
| Defecțiunea contactului auxiliar | 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 “Fără pornire” semn.
- Inspecție regulată: Conduct inspection every 6 luni, 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.
- Cerințe de mediu: Avoid use in humid and dusty environments; install a protective housing if necessary.
- Accesorii compatibile: Only use auxiliary contacts, interlock devices and other accessories original or certified by ABB to ensure safety performance.
