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C'est un Schneider TeSys K series 3-pole miniature AC contactor. It has a rated operational current of 12A (AC-3, 440V), coil voltage of 110V AC, and is fitted with 1 Normalement ouvert (1NON) contact auxiliaire. It adopts screw-clamp terminals. Designed for motor control, HVAC systems and small industrial equipment. Some legacy variants are discontinued, while this exact model remains in production. For performance upgrade, you may switch to the TeSys D series.
- Explication du code modèle
| Segment de code | Définition | Description détaillée |
| LC1 | Product Category | Prefix for Schneider AC contactors; LC stands for contactor, 1 for standard type |
| K | Série de produits | TeSys K series, miniature compact contactors for low-power control |
| 12 | Courant opérationnel nominal | 12UN (AC-3, 440V), suitable for motors up to 5.5kW @ 400V |
| 10 | Configuration des contacts auxiliaires | 1NON (1 Normalement ouvert), 0Caroline du Nord (0 Normalement fermé) |
| F | Code de tension de bobine | 110Bobine V CA (50/60Hz universel) |
| 7 | Type de câblage | Screw-clamp terminals, standard mounting |
- Principales spécifications techniques
| Catégorie | Données techniques | Remarques |
| Caractéristiques de base | ||
| Type de produit | 3-pole AC Contactor | For switching 3-phase circuits |
| Série | TeSys K | Schneider miniature contactor range |
| Poteaux | 3P. (L1, L2, L3) | 3-phase control |
| Courant opérationnel nominal (Dans) | 12UN (AC-3, 440V) | Controls motors up to 5.5kW @ 400V |
| Tension de fonctionnement nominale (Ue) | 690V et | Tension de fonctionnement maximale |
| Tension de la bobine de commande (Uc) | 110V et (50/60HZ) | Universal frequency design |
| Contact auxiliaire | 1NON (Normalement ouvert) | For circuit latching or signal feedback |
| Paramètres de performances | ||
| Fréquence de fonctionnement nominale | 1200 cycles/heure (AC-3) | Standard duty for motor control |
| Endurance mécanique | 10,000,000 opérations | No-load cycles |
| Endurance électrique | 1,000,000 opérations (AC-3, courant nominal) | On-load cycles |
| Consommation électrique de la bobine | Ramasser: 7Virginie, Holding: 2Virginie | Faible consommation d'énergie, économie d'énergie |
| Pick-up Time | ≤ 60ms | Réponse rapide |
| Temps d'abandon | ≤ 40ms | Fast disconnection |
| Caractéristiques physiques | ||
| Dimensions (L × H × P) | 45mm × 85mm × 57mm | Conception modulaire standard, occupies 3 module units |
| Montage | 35mm rail DIN / Panel mounting | Conforme à la norme EN 50022 |
| Terminaux | Pince à vis, max wire cross-section: 2.5mm² | Easy installation with reliable connection |
| Poids | Environ. 180g | Weight per unit |
| Environnement & Certifications | ||
| Température de fonctionnement | -25°C ~ +55°C | Performance may degrade beyond this range |
| Température de stockage | -40°C ~ +85°C | |
| Humidité | 5% ~ 95% (Sans condensation) | |
| Protection contre la pénétration | IP20 | Finger-proof, not for outdoor use |
| Certifications | CEI 60947-4-1, DANS 60947-4-1 | CE marked, complies with international safety standards |
| Statut du cycle de vie | ||
| Statut | Some old models updated; LC1K1210F7 is still in production | Obsolete legacy versions phased out; this model remains available |
- Liste complète des modèles (TeSys K Series 12A)
| Modèle | Tension de bobine | Contact auxiliaire | Type de câblage | Order Reference | Application |
| LC1K1210F7 | 110V et | 1NON | Vis | LC1K1210F7 | Contrôle industriel général, North American & Asian equipment |
| LC1K1210E7 | 48V et | 1NON | Vis | LC1K1210E7 | Safety control circuits, low-voltage systems |
| LC1K1210G7 | 120V et | 1NON | Vis | LC1K1210G7 | North American standard equipment |
| LC1K1210M7 | 220V et | 1NON | Vis | LC1K1210M7 | European & Asian standard equipment |
| LC1K1210Q7 | 24À DC | 1NON | Vis | LC1K1210Q7 | Circuits de commande CC, PLC systems |
| LC1K1201F7 | 110V et | 1Caroline du Nord | Vis | LC1K1201F7 | Circuits requiring Normally Closed feedback |
| LC1K1210U7 | 240V et | 1NON | Vis | LC1K1210U7 | Heavy-duty industrial equipment |
| LC1K1210V7 | 400V et | 1NON | Vis | LC1K1210V7 | High-voltage control circuits |
- Remplacement & Équivalents multimarques
4.1 Original Manufacturer Replacements
| Modèle original | Modèle de remplacement | Raison | Compatibilité |
| LC1K1210F7 | LC1K1210F7 | Same model continuously produced | Entièrement compatible, remplacement direct |
| LC1D1210F7 | Upgrade to TeSys D series with enhanced performance | Dimensionally compatible, improved functions | |
| LC1E1210F7 | Economy version for cost optimization | Des performances similaires, moindre coût |
4.2 Cross-Brand Compatible Products
| Marque | Modèle | Matching Level | Remarques |
| ABB | A12-30-10*110V | 95% | Same dimensions and performance |
| Siemens | 3RT2015-1BB41 | 90% | Identical auxiliary contact configuration |
| Legrand | 8860 | 90% | Different terminal design |
| Chint (Chine) | CJX2-1210*110V | 85% | Cost-effective with complete certifications |
- Application & Cas typiques
5.1 Applications recommandées
Contrôle du moteur: Direct start/stop for 3-phase asynchronous motors below 5.5kW
Systèmes CVC: Control of air conditioning compressors, fans and water pumps, small central air-conditioning units
Automatisation industrielle: PLC control circuits, convoyeurs, packaging machinery and other small equipment
Bâtiments commerciaux: Elevator door operators, fire safety equipment and lighting control
Agricultural Equipment: Irrigation pumps and greenhouse ventilation systems
5.2 Applications non recommandées
High-frequency cycling: Operating frequency over 1200 cycles/heure. TeSys D series is recommended.
High-power motors: Motors exceeding 5.5kW @ 400V. Select higher-rated contactors.
Outdoor humid environments: IP20 protection is insufficient; additional enclosure protection required.
Zones dangereuses explosives: Explosion-proof contactors must be used.
5.3 Cas d'application typiques
Cas 1: Small Injection Molding Machine
Équipement: 3kW hydraulic pump motor for injection molding machine
Issue: Original contactor was bulky and limited cabinet space
Solution: Install LC1K1210F7 together with overload relay
Résultat: 50% gain de place, simpler control circuit and lower failure rate
Cas 2: Hospital Central Air-Conditioning System
Équipement: 4kW fan motors in parallel operation
Requirements: Low noise, low power consumption and high reliability
Solution: Adopt LC1K1210F7 with Schneider EOCR overload protection
Résultat: 15% économie d'énergie, stable operation and reduced maintenance cost
- Dépannage & Guide d'entretien
6.1 Défauts courants & Solutions
| Phénomène de défaut | Causes possibles | Remedial Actions |
| Coil fails to pull in | 1. No voltage or incorrect coil voltage | 1. Verify power voltage matches coil rating |
| 2. Bobine brûlée | 2. Mesurer la résistance de la bobine; replace if open-circuited | |
| 3. Open control circuit | 3. Check wiring and components in control circuit | |
| 4. Bourrage mécanique | 4. Clean iron core, inspect springs and sliding parts | |
| Bruit fort après l'arrivée | 1. Broken shading coil | 1. Replace core assembly |
| 2. Dust/rust on core surface | 2. Clean core contact surface | |
| 3. Uneven mounting | 3. Reinstall and level the unit | |
| 4. Undervoltage supply | 4. Ensure supply voltage within 卤10% tolerance | |
| Main contacts burned | 1. Overload current | 1. Replace with higher-rated contactor |
| 2. Frequent cycling | 2. Optimize control logic to reduce switching frequency | |
| 3. Poor arc suppression | 3. Installer un limiteur de surtension | |
| 4. Fatigued contact springs | 4. Replace contact assembly | |
| Auxiliary contact malfunction | 1. Burned contacts | 1. Replace auxiliary contact module |
| 2. Câblage lâche | 2. Retighten terminal screws | |
| 3. Linkage mechanism fault | 3. Inspect linkage; remplacer si nécessaire |
6.2 Maintenance Procedures
- Monthly Routine Inspection
Check appearance for damage or discoloration
Inspect terminals for looseness and overheating signs
Test pull-in and drop-out action for smooth operation and abnormal noise
- Annual Preventive Maintenance
Power off and clean surface with dry soft cloth
Inspect contact wear; replace if wear depth exceeds 1mm
Measure coil resistance to confirm normal status
Lubricate moving parts with small amount of silicone-based grease
- Cycle de remplacement
Standard operating conditions: 5 ~ 8 années
High-frequency cycling: 2 ~ 3 années
Environnement difficile (haute température / humidité élevée): 1 ~ 2 années
6.3 Quick Troubleshooting Tips
For LC1K miniature contactors rated 12A for motor control
Check voltage first if coil fails to energize; check core for abnormal noise
Replace unit when contacts burn or auxiliary contacts fail
Regular inspection ensures safety; replace after 5 years service life
- Lignes directrices de sélection
- Note actuelle: Select current ≥ 1.2 times motor rated current. 12A is suitable for motors below 5.5kW.
- Tension de bobine: Match coil voltage with control circuit voltage. Common ratings: 24À DC, 110V et, 220V et.
- Contacts auxiliaires: 1NO for latching; 1NC for interlock; 1NO+1NC for complex control.
- Type de câblage: Screw terminals for fixed installation; spring terminals for frequent rewiring.
- Replacement Rule: Prioritize same-series products; verify dimensions and mounting when switching to other series.
