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EOCR-SSD-C-30DMQ is a new-generation ultra-thin compact motor protector of SSD-C series launched by Schneider Electric (anciennement Samwha Corée). Il prend en charge le câblage direct entre 3 et 30 A., adopte une alimentation de contrôle AC220V, features digital display and Q-type three-phase peak current display. It is newly added with phase unbalance and phase sequence protection functions. With smaller size and higher precision, it is fully compatible to replace traditional SSD models. It is specially designed for compact cabinet layout under three-phase unbalanced operating conditions.
- Explication du code modèle
| Segment de code | Définition |
| EOCR | Electronic Over Current Relay, core category for motor protection |
| SSD-C | Solid State Digital Compact, upgraded compact solid-state digital type; ultra-thin DIN rail mounted, successor of standard SSD series |
| 30 | Current protection range: 3~30A, direct circuit wiring without external CT current transformer |
| D | Digital tube display, real-time visible current value and fault codes |
| M. | Control power specification: AC220V±15%, 50/60Hz (industry standard M7 specification) |
| Q | Peak current display function: only displays the maximum current among three phases instead of average value, perfectly suitable for unbalanced loads |
- Paramètres techniques de base
| Catégorie de paramètre | Caractéristiques | Remarques |
| Marque | Schneider Électrique (Original factory in Iksan, Korea, Samwha technology) | Authorized domestic distributor: Shanghai Hanshi Electric |
| Type de produit | Compact solid-state digital protector for motor overload, phase loss and phase unbalance protection | Protection accuracy ±3%, better than ±5% of old SSD models |
| Rated Circuit Voltage | 690V et (CEI) / 600V et (UL) | Universal for low-voltage three-phase motors |
| Tension de tenue aux impulsions | 6kV, conforme à la CEI 60947-4-1 | Industrial surge resistance standard |
| Control Power Supply | AC220V±15% | Exclusive specification for suffix M |
| Total Power Consumption | ≤2.5W | Ultra-low power consumption, stable for long-term standby |
| Courant réglable | 3~30A stepless continuous adjustment | Adjustment ratio: 10:1 |
| Full Protection Functions | Surcharge, perte de phase, rotor bloqué, déséquilibre triphasé, abnormal phase sequence | Unbalance & phase sequence protection newly added in C series, unavailable on traditional SSD |
| Time Delay Parameters | Start delay D-Time: 0.2~30s; Trip delay O-Time: 0.2~10s | Wide adjustable range for heavy-duty starting motors |
| Output Contacts | 1NON+1NC (2SPST) | Évaluation des contacts: 3A/250VAC |
| Display Feature | Q version: flashing three-phase maximum current + fault code alarm | Quickly locate hidden single-phase overload risks |
| Dimension globale | 40×72×105mm | Narrower than old SSD, économie 30% cabinet space |
| Méthode d'installation | Standard 35mm DIN rail clip-on mounting | Direct wiring replacement for old SSD products |
| Classe de protection | IP20 (panneau avant) | Indoor installation inside control cabinets |
| Température de fonctionnement | -20℃ ~ +60℃ | Adaptable to wide-range industrial temperature |
| Température de stockage | -40℃ ~ +85℃ | Safe for transportation and storage |
- Core Differences Between New SSD-C and Traditional Standard SSD
| Article de comparaison | EOCR-SSD-C-30DMQ (New C Type) | EOCR-SSD-30DM7Q (Old Standard Type) |
| Outline Size | Ultra-thin compact design, space-saving in cabinet | Conventional wide body, larger space occupation |
| Fonctions de protection | Surcharge + Perte de phase + Locked Rotor + Phase Unbalance + Phase Sequence | Only overload, phase loss and locked rotor protection |
| Protection Accuracy | ±3% | ±5% |
| Adjustable Time Delay Range | Gamme plus large: 0.2~30s | Narrow range: 0.5~10s |
| Electromagnetic Interference Resistance | Enhanced EMC filter, applicable for inverter surrounding environments | Ordinary anti-interference performance, easily affected by inverter interference |
| Compatibilité | Universal pin definition, seamless replacement for old models | Cannot be reversely replaced by new C-type products |
- Cross-Brand Product Comparison
| Marque & Modèle | Plage actuelle | Puissance de contrôle | Mode d'affichage | Protection de base | Scénarios d'application |
| Schneider EOCR-SSD-C-30DMQ | 3~30A | 220ACC | Three-phase peak current Q display | Surcharge / Perte de phase / Locked Rotor / Unbalance / Phase Sequence | Narrow cabinets, heavy-duty motors with three-phase unbalance |
| Schneider EOCR-SSD-30DM7Q | 3~30A | 220ACC | Three-phase average current display | Surcharge / Perte de phase / Locked Rotor | Conventional working conditions with balanced loads |
| ABB CM-MSS.31P | 3~30A | 24~240V AC/DC | Indicator light without digital display | Surcharge & Perte de phase | Simple basic protection for general industrial control |
| Siemens 3RB2026-1SB0 | 2.5~32A | Wide universal voltage | Voyant lumineux | Basic overload and phase loss protection | Complete cabinet matching with Siemens PLC |
| Omron K8DS-PH1 | 3~30A | 100~240 VCA | Average value digital display | Full-range protection | Precision motors for automatic production lines |
- Full SSD-C Series Model List (Including Q Peak Current Version)
| Current Grade | Modèle de base | Optional Power Suffix | Complete Q Peak Current Model |
| 0.5~6A | EOCR-SSD-C-05S | F7:110ACC / M.:220ACC / S:24~240V / W:380V | EOCR-SSD-C-05DMQ |
| 3~30A | EOCR-SSD-C-30S | Idem que ci-dessus | EOCR-SSD-C-30DMQ |
| 5~60A | EOCR-SSD-C-60S | Idem que ci-dessus | EOCR-SSD-C-60DMQ |
Order Accessories
DIN rail bracket: EOCR-MNT-01
Test & calibration kit: EOCR-TEST-KIT
Custom signal extension cable: 5m / 10m
- Défauts courants & Exclusive Maintenance Solutions (C-Q Series)
| Phénomène de défaut | Principales causes | Dépannage & Solutions |
| No display on panel | Disconnected 220V power supply, loose terminals, blown internal fuse | Mesurer la tension aux bornes, fasten wiring, replace 0.5A fuse |
| Frequent unbalance alarm & tripping | Three-phase load deviation over 8%, poor line contact, phase loss of power supply | Balance motor load, tighten three-phase wiring, inspect incoming line voltage |
| Faux déclenchement & failure to start | Too short D-Time start delay, underset current value | Set delay = motor starting time +1~2s; set current to 1.1 multiplié par le courant nominal du moteur |
| Phase sequence fault alarm | Reversed phase sequence of three-phase incoming lines | Swap any two live wire connections |
| Garbled flickering display | Strong electromagnetic interference from inverter, poor grounding | Standardize grounding layout, keep away from inverter cables, install anti-interference filter |
Cycle d'entretien
Daily inspection: Check peak current value and fault alarm status
Monthly maintenance: Remove dust and tighten wiring terminals
Quarterly calibration: Verify protection action threshold
Annual overhaul: Detect contact service life and replace aging components
- Application Environment Specifications
✅ Recommended Application Scenarios
- Pompes à eau, les fans, conveyors working under three-phase current unbalance conditions
- Compact control cabinets requiring ultra-thin compact protectors
- Heavy-duty motors for chemical stirring, métallurgie, water treatment and HVAC systems
- Industrial sites with strong electromagnetic interference nearby inverters
❌ Not Recommended Scenarios
- High-voltage motors above 690V (special high-voltage protector required)
- Explosion-proof hazardous areas (no original factory explosion-proof enclosure certification)
- Ultra-low power motors below 0.5A
- Long-term independent operation of single-phase motors
- Quick Selection Tips
New ultra-thin C-type SSD, 3 à 30 ampere range;
M stands for 220V AC power, Q shows maximum single-phase current;
Added unbalance and phase sequence protection, easy installation in narrow cabinets;
Set current to 1.1 fois la valeur nominale, extend start delay by one second extra.
- Conformité du fret aérien & Certification Qualifications
- Air Transportation Safety: Pas de batteries au lithium ni de supercondensateurs intégrés, fully compliant with UN38.3 standards. Shippable as general cargo without special MSDS documents.
- Authoritative Certifications: CE (UE), UL (Amérique du Nord), CCC (Certification obligatoire en Chine), ASC, RoHS environmental protection certifications fully approved.
- Conformité aux normes: Strictly implemented in accordance with international standard IEC 60947-4-1 for low-voltage motor protection.
