Contacteur,disjoncteur,onduleur solaire,compteur électrique,batteries solaires
EOCRSSD-30DF7 is a digital motor protector manufactured by Schneider Electric (formerly Samwha, Corée du Sud) with current range 3-30A and 110VAC control power supply. It provides triple protection against overload, phase loss and locked rotor. It is applicable for precise protection of three-phase low-power motors, capable of replacing traditional thermal relays to improve protection accuracy and fault diagnosis efficiency.
- Définition du code modèle
| Segment de code | Description |
| EOCR | Electronic Over Current Relay, core product positioning |
| SSD | Solid State Digital, adopting solid-state electronic components and digital control technology |
| 30 | Current protection range: 3~30A (connexion directe, no external CT required) |
| D | Affichage numérique, equipped with digital tube to display real-time 3-phase average current and fault status |
| F7 | Control power specification: 110VAC±15% (50/60Hz); other options: M7(220ACC), B(24VCA/CC) |
- Principales spécifications techniques
| Catégorie | Paramètres | Remarques |
| Basic Info | ||
| Marque | Schneider Électrique (Former Samwha Korea) | Produced in Iksan, Korea; Authorized agent in China: Shanghai Hanshi Electric |
| Type de produit | Digital Overcurrent Relay / Motor Protector | Higher precision (±5%) than traditional thermal relay |
| Paramètres électriques | ||
| Tension de fonctionnement nominale | 600V et (UL) / 690V et (ASC, CEI 60947-4-1) | Suitable for low-voltage motor circuits |
| Tension de tenue aux impulsions nominale | 6kV | Conforme à la CEI 60947-4-1 |
| Puissance de contrôle | 110VAC±15%, 50/60Hz | Matched with F7 code |
| Consommation d'énergie | ≤3W | Faible consommation d'énergie pour un fonctionnement à long terme |
| Protection Parameters | ||
| Plage de courant réglable | 3~30A continuously adjustable | Adjustment ratio: 10:1 |
| Fonctions de protection | 1. Surintensité (O-Time: 0.5~10s adjustable) | Independent adjustable start delay D-Time |
| 2. Phase loss (fast protection within 3s) | ||
| 3. Locked rotor (combined D-Time+O-Time protection) | ||
| Mode de réinitialisation | Manuel / Électrique (facultatif) | Reset required after fault for restart |
| Sortir & Afficher | ||
| Output Contact | 1 Caroline du Nord + 1 NON (2-SPST) | Évaluation des contacts: 3A/250VAC |
| Mode d'affichage | Digital tube display | Real-time 3-phase average current, flashing fault code indication |
| Physique & Environnemental | ||
| Dimension | 45×75×110mm, standard DIN rail mounting | Compact size saves cabinet space |
| Degré de protection | IP20 (panneau avant) | Suitable for installation inside control cabinets |
| Température de fonctionnement | -20℃ ~ +60℃ | Adaptable to industrial temperature variation |
| Température de stockage | -40℃ ~ +85℃ | Meet transportation and storage requirements |
| Attestation | ||
| Certifications internationales | CE, UL, ASC | Se conformer à la CEI 60947-4-1, global applicable |
| Conformité du fret aérien | No built-in lithium battery, conform to UN38.3 | Shippable as general cargo without special packaging |
- Cross-brand Comparison
| Modèle | Plage actuelle | Puissance de contrôle | Afficher | Protection | Gamme de prix | Application |
| Schneider EOCRSSD-30DF7 | 3~30A | 110ACC | Digital display | Surcharge / Phase loss / Locked rotor | 350~450CNY | 3-phase low-power motors with fault diagnosis demand |
| ABB CM-MSS.31P | 3~30A | 24~240VAC/DC | Indicator light | Surcharge / Phase loss / Locked rotor | 400~500CNY | General industrial motors, unified brand matching |
| Siemens 3RB2026-1SB0 | 2.5~32A | 24~240VAC/DC | Indicator light | Surcharge / Phase loss | 300~400CNY | Supporting Siemens PLC, protection de base |
| Omron K8DS-PH1 | 3~30A | 100~240VAC | Digital display | Surcharge / Phase loss / Locked rotor | 380~480CNY | Lignes de production automatisées, high-precision protection |
| Chint NR2-32 | 2.5~32A | No control power | No display | Surcharge / Phase loss | 50~80CNY | Economy application, low precision requirement |
Points clés de la sélection
- Display function: EOCRSSD-30DF7 supports real-time current monitoring and fault diagnosis, superior to indicator-light-only models
- Protection accuracy: Electronic protector (±5%) far exceeds thermal relay (±15%), extending motor service life
- Control power: 110VAC F7 version fits specific regional power grids, confirm on-site power supply first
- Liste des modèles de la série complète
EOCR-SSD Series Classification
| Plage actuelle | Modèle de base | Power Options | Exemples de modèles complets |
| 0.5~6A | EOCRSSD-05S | S:24~240VAC/DC | EOCRSSD-05DF7, EOCRSSD-05DM7, EOCRSSD-05Base de données |
| F7:110ACC | |||
| M7:220ACC | |||
| W:380~440VAC | |||
| 3~30A | EOCRSSD-30S | Idem que ci-dessus | EOCRSSD-30DF7, EOCRSSD-30DM7, EOCRSSD-30DW |
| 5~60A | EOCRSSD-60S | Idem que ci-dessus | EOCRSSD-60DF7, EOCRSSD-60DM7, EOCRSSD-60DS |
Code de commande & Accessoires
Standard order number: EOCRSSD-30DF7
Mounting bracket: EOCR-MNT-01 (DIN rail type)
Extension cable: EOCR-CAB-05 (5m) / EOCR-CAB-10 (10m)
Test kit: EOCR-TEST-KIT (including analog load & calibrator)
- Défauts courants & Maintenance Solutions
| Phénomène de défaut | Causes possibles | Étapes de dépannage | Solutions | Mesures préventives |
| No digital display | 1. Control power disconnected | 1. Measure terminal voltage | 1. Connect 110VAC correctly | Check power spec before installation |
| 2. Wrong wiring polarity | 2. Vérifier le câblage | 2. Adjust connection (AC non-polar) | ||
| 3. Internal fuse blown | 3. Inspect internal fuse | 3. Replace 0.5A fuse | ||
| Faux déclenchement | 1. Low current setting | 1. Confirm motor rated current | 1. Set current to 1.1 fois la valeur nominale | Set parameters per motor nameplate |
| 2. Short start delay | 2. Extend D-Time | 2. D-Time = motor start time +1s | ||
| 3. Power harmonic interference | 3. Test power THD | 3. Install power filter | ||
| Failure to trip | 1. Excessively high current setting | 1. Check current setting | 1. Set current to 0.9 fois la valeur nominale | Regular contact inspection, avoid overload |
| 2. Damaged output contacts | 2. Test contact continuity | 2. Replace contact module | ||
| 3. Panne du circuit interne | 3. Inspect internal components | 3. Contact after-sales service | ||
| Garbled display | 1. Fluctuation de tension | 1. Test power stability | 1. Install voltage stabilizer | Keep away from inverters, ensure good grounding |
| 2. Electromagnetic interference | 2. Check grounding | 2. Optimize grounding | ||
| 3. Program error | 3. Power cycle restart | 3. Restore factory settings |
Cycle d'entretien
- Daily inspection: Check display status and alarm indicator
- Monthly maintenance: Dust cleaning, tighten wiring terminals
- Quarterly calibration: Verify protection parameter accuracy
- Annual overhaul: Inspect internal components, replace aging parts
- Scénarios d'application & Cases
Scénarios applicables
Automatisation industrielle: Machines-outils à commande numérique, convoyeurs, printing equipment
Traitement de l'eau: Water pumps, fans with frequent startup and variable load
CVC: Compresseurs d'air, ventilateurs de tour de refroidissement
Building materials industry: Mélangeurs, convoyeurs lourds
Power system: Standby generators, small transformer protection
Non-recommended Scenarios
High voltage motors (>690V): Adopt dedicated high-voltage protectors
Explosion-proof environment: Extra explosion-proof housing required with higher cost
Ultra-low current (<0.5UN): Choose EOCRSSD-05S or match external CT
Cas typiques
Cas 1: Water Pump Motor Protection in Steel Plant
Problème: Frequent false tripping of old thermal relays causing unplanned shutdowns without fault identification
Solution: Install EOCRSSD-30DF7, set current 15A (motor rated 13.5A), start delay 5s
Effet: False shutdown rate reduced by 62%, fault diagnosis time shortened from 2h to 5min, annual maintenance cost saved about 80,000 CNY
Cas 2: Mixer System in Pharmaceutical Factory
Problème: Motor burnout caused by mixer locked rotor leading to heavy losses
Solution: Adopt EOCRSSD-30DF7, set locked rotor protection (D-Time=3s, O-Time=1s)
Effet: Power cut within 3s once locked rotor occurs, 100% motor intact rate, avoid production stop losses
- Règles de sélection
Quick Selection Rules
- Correspondance actuelle: Set protection current within 0.9~1.1 times motor rated current
- Delay setting: Start delay (D-Time) = actual motor startup time + 1 deuxième
- Alimentation: Prioritize matching on-site control power to avoid extra transformer cost
- Display demand: Choose D-type for fault diagnosis, non-D-type for basic protection only
- Conformité du fret aérien & Certifications
- Air Freight Regulation
No built-in lithium batteries or supercapacitors, fully compliant with UN38.3 air transport standards
Can be delivered as general goods, no MSDS or special shipping documents needed
Packaging suggestion: Anti-static bag + hard carton to prevent vibration damage
- Qualification Certificates
CE: Comply with EU LVD & EMC directives
UL: Meet US safety standards for North America market
ASC: Certified for Canadian market
CEI: Conform to international electrical standards for global use
