Interpretarea Codului Modelului
| Segment de cod | Descriere |
| EOCR | Series logo, motor protection relay series under Schneider (Former SAMWHA Korea) |
| SS | Basic series code, economical electronic overcurrent relay platform |
| D | Function upgrade code, Versiunea cu afișaj digital, different from LED indicator type of traditional SS series |
| 30 | Current specification code, rated protection current range: 3-30O, built-in through-type CT for direct wiring |
| S | Control power supply code: universal wide voltage 24-240V AC/DC; Type W is dedicated for 380-440V AC |
Poziționarea de bază:
EOCRSSD-30S is a compact digital comprehensive motor protection relay, featuring three core protections: suprasarcina, phase loss and stall. It is applicable for motors with current 3-30A and compatible with 24-240V wide-voltage control power supply.
- Parametrii de specificație de bază
| Categorie | Specificații detaliate | Observații |
| Parametrii de bază | ||
| Număr de ordine | EOCRSSD-30S (Schneider SKU: 0015874) | Standard universal model worldwide |
| Tip de protecție | Electronic overcurrent relay / Motor protector | Replace combination of traditional thermal relay and ammeter |
| Instalare | 35mm Montare pe șină DIN / Panel mounting | Structură compactă, economisind spațiu |
| Dimensiune (L×A×D) | 56mm×78mm×120mm | Fully compatible with installation size of EOCR-SS series |
| Temperatura de operare | -20℃ ~ 60℃ | Adapt to temperature difference changes in industrial environment |
| Specificații electrice | ||
| Current Protection Range | 3-30O (direct wiring) | External CT is required for current over 60A |
| Control Power Supply | 24-240V AC/DC (50/60Hz) | Design larg de tensiune, fit for various control systems |
| Working Frequency | 50/60Hz | Universal power frequency for global use |
| Output Contacts | 1NU + 1NC passive contacts | 95-96 (NC), 97-98 (NU) |
| Capacitate de contact | AC 250V/5A, DC 30V/5A | Meet demands of conventional control circuits |
| Funcții de protecție | ||
| Protecție la suprasarcină | Reglabil (0.1~100s), support I²t inverse time characteristic | Set via O-TIME parameter |
| Protecție împotriva pierderii de fază | Quick action within 4 secunde | Trigger when three-phase unbalance degree>20% |
| Stall Protection | Adjustable startup delay (D-TIME), minimum 0.2s quick tripping | Suitable for instantaneous protection during motor startup |
| Display Function | 7-segment LED digital tube | Real-time display of operating current and fault code |
| Modul de resetare | Resetare manuală (butonul RESET) / Electric reset | Easy recovery after troubleshooting |
| Precizie & Fiabilitate | ||
| Measuring Accuracy | ±1% | Higher than traditional thermal relay (±10%) |
| Timp de răspuns | Min. 0.2s (stall protection) | Effectively prevent motor damage |
| Fault Record | Check the latest 3 înregistrări de erori | Convenient for quick fault location |
| Clasa de izolare | Clasa II | High safety protection level |
- Defecte comune & Maintenance Solutions
3.1 Fault Codes & Depanare
| Cod de eroare | Fault Type | Cauze posibile | Soluții |
| O-C | Overload Tripping | 1. Excessive motor load | 1. Check load and eliminate mechanical jamming |
| 2. Too small O-TIME setting | 2. Appropriately increase O-TIME value | ||
| 3. Abnormal power supply voltage | 3. Measure three-phase voltage to ensure balance | ||
| P-P | Phase Loss / Open Phase | 1. Broken or loose power wire | 1. Check circuit connection and fasten terminals |
| 2. Burned contactor contacts | 2. Replace faulty contactor contacts | ||
| 3. Motor winding failure | 3. Measure insulation resistance of motor winding | ||
| S-C | Stall / Blockage | 1. Instant stall during motor startup | 1. Inspect mechanical transmission system |
| 2. Too short D-TIME setting | 2. Appropriately extend D-TIME value | ||
| 3. Stuck mechanical load | 3. Remove load jamming failure | ||
| Fără afișare | Power Failure | 1. Control power disconnected | 1. Check power wiring |
| 2. Power voltage out of range | 2. Measure input voltage (24-240V) | ||
| 3. Blown internal fuse | 3. Replace internal fuse | ||
| Abnormal Display | Electromagnetic Interference | 1. Close to high-power inverter / electric welder | 1. Keep away from interference sources or add shielding measures |
| 2. Cabluri slăbite | 2. Inspect and fasten all wiring | ||
| 3. Firmware error | 3. Restore device to factory settings |
3.2 Daily Maintenance Schedule
| Ciclul de întreținere | Maintenance Items | Puncte de operare |
| Zilnic | Inspecție vizuală | Clean panel and heat dissipation holes, check normal LED display |
| Weekly | Inspecția cablajului | Check loose terminals and oxidation phenomenon |
| Monthly | Parameter Verification | Confirm O-TIME and D-TIME conform to motor rated values |
| Quarterly | Test de funcționare | Simulate overload and phase loss faults to verify protection accuracy |
| Yearly | Comprehensive Inspection | Check aging of internal components, update firmware if necessary |
- Full EOCRSSD Series Model List
The EOCRSSD series has 3 basic models covering current range 0.5-60A to meet protection demands of motors with different power.
| Model | Current Protection Range | Control Power Supply | Caracteristici principale | Applicable Motor Power (380V) |
| EOCRSSD-05S | 0.5-6O | 24-240V AC/DC | Special for low current, direct wiring | 0.18-3kW |
| EOCRSSD-30S | 3-30O | 24-240V AC/DC | General medium current type, direct wiring | 1.5-15kW |
| EOCRSSD-60S | 5-60O | 24-240V AC/DC | General high current type, direct wiring (External CT required above 60A) | 3-30kW |
Nota: The whole series supports overload, phase loss and stall protection; independent adjustable startup delay (D-Time) and overload action time (O-Time); LED digital display for operating current and fault causes.
- Cross-brand Product Comparison
| Comparison Items | Schneider EOCRSSD-30S | Siemens 3RB2026-1KB0 | ABB CM-MSS.61S | Omron K8DS-PH1 |
| Interval de curent | 3-30O | 2.5-32O | 0.1-40O | 3-30O |
| Control Power Supply | 24-240V AC/DC | 24-240V AC/DC | 24-240V AC/DC | 24-240V AC/DC |
| Funcții de protecție | Supraîncărcare, Phase Loss, Stall | Supraîncărcare, Phase Loss, Stall | Supraîncărcare, Phase Loss, Stall, Phase Unbalance | Supraîncărcare, Phase Loss, Stall |
| Display Mode | 7-segment LED digital tube | LED indicator light | Digital display | LED indicator light |
| Output Contacts | 1NU+1NC | 1NU+1NC | 1NU+1NC | 1NU+1NC |
| Accuracy Grade | ±1% | ±2% | ±1% | ±2% |
| Installation Size | 56×78×120mm | 55×78×118mm | 56×78×120mm | 55×78×118mm |
| Gama de prețuri | Mediu (Despre 370 RMB) | Ridicat (Despre 500 RMB) | Ridicat (Despre 480 RMB) | Mediu (Despre 350 RMB) |
| Avantajele de bază | Intuitive digital display, fault record, 1:1 replacement for SS series | Brand premium, excellent system integration | Phase unbalance protection, mare precizie | Eficient din punct de vedere al costurilor, fast response speed |
- Conformitatea transportului aerian & Informații de certificare
6.1 Air Shipment Compliance Judgment
Product Category: Electrical and electronic equipment (No built-in lithium battery / super capacitor)
UN Number: Nu este necesar (Mărfuri nepericuloase)
Shipping Restrictions: No special restrictions, deliver as general cargo
Packaging Requirement: Adopt anti-static packaging to avoid static damage to internal components during transportation
6.2 Informații de certificare
| Certification Type | Certification Standard | Domeniul de aplicare aplicabil | Key Requirements |
| Certificare CE | ÎN 60947-4-1 (Electrical Safety) | EU Market | Comply with Low Voltage Directive (LVD) and EMC Directive |
| ÎN 61000-6-2 (EMC Immunity) | |||
| UL Certification | UL 508 (Industrial Control Equipment) | North America Market | Meet North American electrical safety standards |
| CSA Certification | CSA C22.2 No.14 (Control Equipment) | Canada Market | Conform to Canadian safety standards |
| IEC Certification | IEC 60947-4-1 | Global Market | Comply with standards of International Electrotechnical Commission |
Nota: CE marks and certification numbers are marked on product body and outer package. Technical documents shall include test reports, risk assessment reports and Declaration of Conformity (DoC), which shall be kept for at least 10 ani.
- Formula de selecție & Quick Memorization Rules
7.1 Formula de selecție
Calculate motor current first, match EOCRSSD properly;
05 stands for 0.5-6A, 30 covers 3-30A;
60 reaches 60A, match external CT for higher current;
Select S/W according to control power, S means 24-240 wide voltage;
Three core protections: suprasarcina, phase loss and stall;
Easy fault checking via digital display, convenient DIN rail installation.
7.2 Quick Memorization Rules
Potrivire curentă: Rated motor current shall be within 30%-80% of protector range, avoid boundary value affecting accuracy
Voltage Selection: Prioritize Type S (24-240V AC/DC) control power for stronger compatibility
Setarea parametrilor:
O-TIME: Set 10-20 seconds when current is 1.2 times motor rated current
D-TIME: Set as motor startup time plus 2 secunde
Replacement Rule: Realize 1:1 direct replacement for traditional EOCR-SS series and thermal relays without changing installation size and wiring
- Applicable & Scenarii inaplicabile
Scenarii aplicabile
- General Industrial Motors: Protection for water pumps, fani, compressors and other common equipment
- Linii de producție mici: Single motor control loop requiring visualized fault display
- Renovation Projects: Replace traditional thermal relays to improve protection precision and convenience
- Harsh Working Environment: Temperature range -20℃~60℃, suitable for most industrial sites
- Multi-voltage System: 24-240V wide voltage adaptation, fit for transnational equipment and complex power supply environment
Scenarii inaplicabile
- High-precision Control: Intelligent control system needing 4-20mA analog output or communication function (Recommend EOCR-E series)
- Extra-high Current Motor: Current over 60A without space for external CT installation (Recommend EOCR-3DM2 series)
- Special Protection Demand: Occasions requiring earth protection, leakage protection or phase sequence protection (Recommend EOCR-DS1 series)
- Explosion-proof Environment: Hazardous areas needing explosion-proof certification (Choose dedicated explosion-proof protectors)
Full Series Model List of Schneider EOCR Digital Motor Protectors
- Series Classification Overview
Schneider EOCR digital motor protectors are divided into three categories by function positioning: Economical Type, Multifunctional Digital Type and Intelligent Type, covering current range 0.5-800A to meet various industrial demands.
- Economical Digital Protectors (EOCR-SS/SSD Series)
2.1 EOCR-SS Series (LED Indication)
| Model | Interval de curent | Puterea de control | Comanda nr. | Caracteristici de bază | Applicable Power (380V) |
| EOCR-SS05S | 0.5-6O | 24-240V AC/DC | 15872 | Overload/Phase Loss/Stall protection, LED indication | 0.18-3kW |
| EOCR-SS30S | 3-30O | 24-240V AC/DC | 15873 | Same protection functions | 1.5-15kW |
| EOCR-SS60S | 5-60O | 24-240V AC/DC | 15874 | Same protection functions | 3-30kW |
| EOCR-SS05W | 0.5-6O | 380-440V și | 15875 | Dedicated 380V control power | 0.18-3kW |
| EOCR-SS30W | 3-30O | 380-440V și | 15876 | Dedicated 380V control power | 1.5-15kW |
| EOCR-SS60W | 5-60O | 380-440V și | 15877 | Dedicated 380V control power | 3-30kW |
2.2 EOCR-SSD Series (Digital Display Upgraded Version)
| Model | Interval de curent | Puterea de control | Comanda nr. | Caracteristici de bază | Applicable Power (380V) |
| EOCRSSD-05S | 0.5-6O | 24-240V AC/DC | 15878 | Dual digital & LED display, fault record, inverter optimized | 0.18-3kW |
| EOCRSSD-30S | 3-30O | 24-240V AC/DC | 15879 | Same functions | 1.5-15kW |
| EOCRSSD-60S | 5-60O | 24-240V AC/DC | 15880 | Same functions | 3-30kW |
| EOCRSSD-05W | 0.5-6O | 380-440V și | 15881 | 380V dedicated, dual display | 0.18-3kW |
| EOCRSSD-30W | 3-30O | 380-440V și | 15882 | 380V dedicated, dual display | 1.5-15kW |
| EOCRSSD-60W | 5-60O | 380-440V și | 15883 | 380V dedicated, dual display | 3-30kW |
- Multifunctional Digital Protectors (EOCR-E Series)
3.1 EOCR-3DE/FDE Series (Basic Digital Type)
| Model | Interval de curent | Puterea de control | Wiring Type | Caracteristici de bază | Scenarii aplicabile |
| EOCR-3DE-05 | 0.5-6O | 24-240V AC/DC | Window type | Overload/Phase Loss/Stall/Reverse Phase/Unbalance protection, pre-alarm | General industrial motors |
| EOCR-3DE-30 | 3-30O | 24-240V AC/DC | Window type | Same functions | General industrial motors |
| EOCR-3DE-60 | 5-60O | 24-240V AC/DC | Window type | Same functions | General industrial motors |
| EOCR-FDE-05 | 0.5-6O | 24-240V AC/DC | Feed-through type | Same as 3DE series with different wiring | Space-limited installation |
| EOCR-FDE-30 | 3-30O | 24-240V AC/DC | Feed-through type | Same as 3DE series with different wiring | Space-limited installation |
| EOCR-FDE-60 | 5-60O | 24-240V AC/DC | Feed-through type | Same as 3DE series with different wiring | Space-limited installation |
3.2 EOCR-3EZ/FEZ Series (With Earth Fault Protection)
| Model | Interval de curent | Puterea de control | Wiring Type | Caracteristici de bază | Scenarii aplicabile |
| EOCR-3EZ-05 | 0.5-6O | 24-240V AC/DC | Window type | 3DE full functions + adjustable earth fault protection (30mA-1A) | Equipment requiring earth protection |
| EOCR-3EZ-30 | 3-30O | 24-240V AC/DC | Window type | Same functions | Equipment requiring earth protection |
| EOCR-3EZ-80 | 5-80O | 24-240V AC/DC | Window type | Same functions | Equipment requiring earth protection |
| EOCR-FEZ-05 | 0.5-6O | 24-240V AC/DC | Feed-through type | Same as 3EZ series | Space-limited installation + earth protection |
| EOCR-FEZ-30 | 3-30O | 24-240V AC/DC | Feed-through type | Same as 3EZ series | Space-limited installation + earth protection |
| EOCR-FEZ-80 | 5-80O | 24-240V AC/DC | Feed-through type | Same as 3EZ series | Space-limited installation + earth protection |
3.3 EOCR-3E420/FE420 Series (With 4-20mA Output)
| Model | Interval de curent | Puterea de control | Wiring Type | Caracteristici de bază | Scenarii aplicabile |
| EOCR-3E420-05 | 0.5-6O | 24-240V AC/DC | Window type | 3DE functions + 4-20mA analog output | Remote monitoring system |
| EOCR-3E420-30 | 3-30O | 24-240V AC/DC | Window type | Same functions | Remote monitoring system |
| EOCR-3E420-60 | 5-60O | 24-240V AC/DC | Window type | Same functions | Remote monitoring system |
| EOCR-FE420-05 | 0.5-6O | 24-240V AC/DC | Feed-through type | Same as 3E420 series | Space-limited + monitorizare de la distanță |
| EOCR-FE420-30 | 3-30O | 24-240V AC/DC | Feed-through type | Same as 3E420 series | Space-limited + monitorizare de la distanță |
| EOCR-FE420-60 | 5-60O | 24-240V AC/DC | Feed-through type | Same as 3E420 series | Space-limited + monitorizare de la distanță |
- Intelligent Protectors (EOCR-3DM2/FDM2/3MZ2 Series)
4.1 EOCR-3DM2 Series (Window Type)
| Model | Interval de curent | Puterea de control | Caracteristici de bază | Communication Function | Scenarii aplicabile |
| EOCR-3DM2-WRDB | 0.5-80O | 24În DC | Protectie completa + digital display + fault record + load selection | RS-485 Modbus | DC control system |
| EOCR-3DM2-WRDU | 0.5-80O | 100-240V AC/DC | Protectie completa + digital display + fault record + load selection | RS-485 Modbus | AC & DC universal system |
| EOCR-3DM2-WRDBHZ | 0.5-80O | 24În DC | With harmonic suppression function | RS-485 Modbus | Frequency conversion drive system |
| EOCR-3DM2-WRDUHZ | 0.5-80O | 100-240V AC/DC | With harmonic suppression function | RS-485 Modbus | Frequency conversion drive system |
4.2 EOCR-FDM2 Series (Feed-through Type)
| Model | Interval de curent | Puterea de control | Caracteristici de bază | Communication Function | Scenarii aplicabile |
| EOCR-FDM2-FRDB | 0.5-80O | 24În DC | Protectie completa + digital display + fault record + load selection | RS-485 Modbus | DC control system |
| EOCR-FDM2-FRDU | 0.5-80O | 100-240V AC/DC | Protectie completa + digital display + fault record + load selection | RS-485 Modbus | AC & DC universal system |
| EOCR-FDM2-FRDBHZ | 0.5-80O | 24În DC | With harmonic suppression function | RS-485 Modbus | Frequency conversion drive system |
| EOCR-FDM2-FRDUHZ | 0.5-80O | 100-240V AC/DC | With harmonic suppression function | RS-485 Modbus | Frequency conversion drive system |
4.3 EOCR-3MZ2 Series (Tip terminal, External CT Required)
| Model | Interval de curent | Puterea de control | Caracteristici de bază | Communication Function | Scenarii aplicabile |
| EOCR-3MZ2-TRDB | 0.5-800O (External CT) | 24În DC | Protectie completa + digital display + fault record + load selection | RS-485 Modbus | High current motor |
| EOCR-3MZ2-TRDU | 0.5-800O (External CT) | 100-240V AC/DC | Protectie completa + digital display + fault record + load selection | RS-485 Modbus | High current motor |
| EOCR-3MZ2-TRDBHZ | 0.5-800O (External CT) | 24În DC | With harmonic suppression function | RS-485 Modbus | High current frequency conversion motor |
| EOCR-3MZ2-TRDUHZ | 0.5-800O (External CT) | 100-240V AC/DC | With harmonic suppression function | RS-485 Modbus | High current frequency conversion motor |
- Special Function Protectors
5.1 EOCR-DS/DS3 Series (Economical Digital Display Type)
| Model | Interval de curent | Puterea de control | Caracteristici de bază | Scenarii aplicabile |
| EOCRDS-05S | 0.5-6O | 24-240V AC/DC | Overload/Phase Loss/Stall protection, digital display | Basic digital display demand |
| EOCRDS-30S | 3-30O | 24-240V AC/DC | Overload/Phase Loss/Stall protection, digital display | Basic digital display demand |
| EOCRDS-60S | 5-60O | 24-240V AC/DC | Overload/Phase Loss/Stall protection, digital display | Basic digital display demand |
| EOCRDS3-05S | 0.5-6O | 24-240V AC/DC | Upgraded version with additional phase unbalance protection | Basic display + protecție împotriva dezechilibrului |
| EOCRDS3-30S | 3-30O | 24-240V AC/DC | Upgraded version with additional phase unbalance protection | Basic display + protecție împotriva dezechilibrului |
| EOCRDS3-60S | 5-60O | 24-240V AC/DC | Upgraded version with additional phase unbalance protection | Basic display + protecție împotriva dezechilibrului |
5.2 EOCR-PMZ/PFZ Series (Power Monitoring Type)
| Model | Interval de curent | Puterea de control | Caracteristici de bază | Communication Function | Scenarii aplicabile |
| EOCR-PMZ-05 | 0.5-6O | 24-240V AC/DC | Protectie completa + power monitoring + energy metering | RS-485 Modbus | Energy consumption monitoring system |
| EOCR-PMZ-30 | 3-30O | 24-240V AC/DC | Protectie completa + power monitoring + energy metering | RS-485 Modbus | Energy consumption monitoring system |
| EOCR-PMZ-80 | 5-80O | 24-240V AC/DC | Protectie completa + power monitoring + energy metering | RS-485 Modbus | Energy consumption monitoring system |
| EOCR-PFZ-05 | 0.5-6O | 24-240V AC/DC | Feed-through type, same functions as PMZ series | RS-485 Modbus | Energy monitoring + limited space |
| EOCR-PFZ-30 | 3-30O | 24-240V AC/DC | Feed-through type, same functions as PMZ series | RS-485 Modbus | Energy monitoring + limited space |
| EOCR-PFZ-80 | 5-80O | 24-240V AC/DC | Feed-through type, same functions as PMZ series | RS-485 Modbus | Energy monitoring + limited space |
5.3 EOCR-DGT Series (Tip de protecție împotriva scurgerilor)
| Model | Interval de curent | Leakage Protection Range | Puterea de control | Caracteristici de bază | Scenarii aplicabile |
| EOCR-DGT-05 | 0.5-6O | 30mA-1A | 24-240V AC/DC | Leakage + Supraîncărcare + Phase Loss + Reverse Phase + Unbalance protection | Equipment in humid environment |
| EOCR-DGT-30 | 3-30O | 30mA-1A | 24-240V AC/DC | Full combined protection | Equipment in humid environment |
| EOCR-DGT-60 | 5-60O | 30mA-1A | 24-240V AC/DC | Full combined protection | Equipment in humid environment |
| EOCR-DGT-80 | 5-80O | 30mA-1A | 24-240V AC/DC | Full combined protection | Equipment in humid environment |
- Quick Memorization of Model Naming Rules
- Prefix: EOCR= Schneider motor protection relay series mark
- Cod de serie:
SS/SSD: Economical type (SSD with digital display)
3DE/FDE/3EZ/FEZ/3E420/FE420: Multifunctional digital type
3DM2/FDM2/3MZ2: Intelligent type (3MZ2 needs external CT)
DS/DS3: Simple digital display type
PMZ/PFZ: Power monitoring type
DGT: Tip de protecție împotriva scurgerilor
- Current Code: 05(0.5-6O), 30(3-30O), 60(5-60O), 80(5-80O)
- Power Supply Code: S(24-240V AC/DC), W(380V și), B(24VDC), U(100-240V AC/DC)
- Modul de cablare: W(Window), F(Feed-through), T(Terminal type)
- Special Function: HZ(Harmonic suppression), 420(4-20mA output)
- Quick Selection Table by Functional Demand
| Functional Demand | Seria recomandată | Avantajele de bază | Max Current |
| Protecție de bază & low cost | EOCR-SS/SSD | Eficient din punct de vedere al costurilor, instalare ușoară | 60O |
| Protecție de bază + digital display | EOCRSSD/DS | Visualized fault checking | 60O |
| Protectie completa + earth fault protection | EOCR-3EZ/FEZ | Anti-leakage, high safety level | 80O |
| Monitorizare de la distanță + analog signal | EOCR-3E420/FE420 | 4-20mA signal output, easy system integration | 60O |
| Control inteligent + comunicare | EOCR-3DM2/FDM2 | Modbus remote control | 80O |
| High current motor protection | EOCR-3MZ2 | Match external CT, cover 0.5-800A | 800O |
| Energy consumption monitoring + protecţie | EOCR-PMZ/PFZ | Power statistics and energy-saving analysis | 80O |
| Protecție împotriva scurgerilor + full combined protection | EOCR-DGT | Integrated leakage protection | 80O |
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