Interpretação de código modelo
| Segmento de código | Descrição |
| 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, Digital display version, different from LED indicator type of traditional SS series |
| 30 | Current specification code, rated protection current range: 3-30UM, 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 |
Posicionamento central:
EOCRSSD-30S is a compact digital comprehensive motor protection relay, featuring three core protections: sobrecarga, phase loss and stall. It is applicable for motors with current 3-30A and compatible with 24-240V wide-voltage control power supply.
- Parâmetros de especificação principal
| Categoria | Especificações detalhadas | Observações |
| Parâmetros Básicos | ||
| Número do pedido | EOCRSSD-30S (Schneider SKU: 0015874) | Standard universal model worldwide |
| Tipo de proteção | Electronic overcurrent relay / Motor protector | Replace combination of traditional thermal relay and ammeter |
| Instalação | 35mm montagem em trilho DIN / Panel mounting | Estrutura compacta, economia de espaço |
| Dimensão (L×A×P) | 56mm×78mm×120mm | Fully compatible with installation size of EOCR-SS series |
| Temperatura operacional | -20℃ ~ 60℃ | Adapt to temperature difference changes in industrial environment |
| Especificações Elétricas | ||
| Current Protection Range | 3-30UM (direct wiring) | External CT is required for current over 60A |
| Control Power Supply | 24-240V CA/CC (50/60Hz) | Projeto de ampla tensão, fit for various control systems |
| Working Frequency | 50/60Hz | Universal power frequency for global use |
| Output Contacts | 1NÃO + 1NC passive contacts | 95-96 (NC), 97-98 (NÃO) |
| Capacidade de contato | CA 250V/5A, DC 30V/5A | Meet demands of conventional control circuits |
| Funções de proteção | ||
| Proteção contra sobrecarga | Ajustável (0.1~100s), support I²t inverse time characteristic | Set via O-TIME parameter |
| Proteção contra perda de fase | Quick action within 4 segundos | 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 |
| Modo de reinicialização | Reinicialização manual (RESET button) / Electric reset | Easy recovery after troubleshooting |
| Precisão & Confiabilidade | ||
| Measuring Accuracy | ±1% | Higher than traditional thermal relay (±10%) |
| Tempo de resposta | Mínimo. 0.2é (proteção contra travamento) | Effectively prevent motor damage |
| Fault Record | Check the latest 3 registros de falhas | Convenient for quick fault location |
| Classe de isolamento | Classe II | High safety protection level |
- Falhas Comuns & Maintenance Solutions
3.1 Fault Codes & Solução de problemas
| Código de falha | Tipo de falha | Possíveis causas | Soluções |
| 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 | Parar / 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 | ||
| No Display | 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. Fiação solta | 2. Inspect and fasten all wiring | ||
| 3. Firmware error | 3. Restore device to factory settings |
3.2 Daily Maintenance Schedule
| Ciclo de Manutenção | Maintenance Items | Pontos de Operação |
| Diário | Inspeção Visual | Clean panel and heat dissipation holes, check normal LED display |
| Weekly | Inspeção de fiação | Check loose terminals and oxidation phenomenon |
| Mensal | Parameter Verification | Confirm O-TIME and D-TIME conform to motor rated values |
| Trimestral | Teste de Função | Simulate overload and phase loss faults to verify protection accuracy |
| Anual | 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.
| Modelo | Current Protection Range | Control Power Supply | Principais recursos | Potência do motor aplicável (380V) |
| EOCRSSD-05S | 0.5-6UM | 24-240V CA/CC | Special for low current, direct wiring | 0.18-3kW |
| EOCRSSD-30S | 3-30UM | 24-240V CA/CC | General medium current type, direct wiring | 1.5-15kW |
| EOCRSSD-60S | 5-60UM | 24-240V CA/CC | General high current type, direct wiring (External CT required above 60A) | 3-30kW |
Observação: 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 |
| Faixa Atual | 3-30UM | 2.5-32UM | 0.1-40UM | 3-30UM |
| Control Power Supply | 24-240V CA/CC | 24-240V CA/CC | 24-240V CA/CC | 24-240V CA/CC |
| Funções de proteção | Sobrecarga, Phase Loss, Parar | Sobrecarga, Phase Loss, Parar | Sobrecarga, Phase Loss, Parar, Phase Unbalance | Sobrecarga, Phase Loss, Parar |
| Display Mode | 7-segment LED digital tube | LED indicator light | Digital display | LED indicator light |
| Output Contacts | 1NÃO+1NC | 1NÃO+1NC | 1NÃO+1NC | 1NÃO+1NC |
| Grau de precisão | ±1% | ±2% | ±1% | ±2% |
| Tamanho da instalação | 56×78×120mm | 55×78×118mm | 56×78×120mm | 55×78×118mm |
| Faixa de preço | Médio (Sobre 370 RMB) | Alto (Sobre 500 RMB) | Alto (Sobre 480 RMB) | Médio (Sobre 350 RMB) |
| Principais vantagens | Intuitive digital display, fault record, 1:1 replacement for SS series | Brand premium, excellent system integration | Proteção de desequilíbrio de fase, alta precisão | Econômico, velocidade de resposta rápida |
- Air Shipment Compliance & Informações de certificação
6.1 Air Shipment Compliance Judgment
Product Category: Electrical and electronic equipment (No built-in lithium battery / super capacitor)
UN Number: Não obrigatório (Non-dangerous goods)
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 Informações de certificação
| Certification Type | Certification Standard | Escopo aplicável | Key Requirements |
| Certificação CE | EM 60947-4-1 (Segurança Elétrica) | EU Market | Comply with Low Voltage Directive (LVD) and EMC Directive |
| EM 61000-6-2 (EMC Immunity) | |||
| Certificação UL | 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 | CEI 60947-4-1 | Global Market | Comply with standards of International Electrotechnical Commission |
Observação: 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 anos.
- Fórmula de seleção & Quick Memorization Rules
7.1 Fórmula de seleção
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 ampla tensão;
Three core protections: sobrecarga, phase loss and stall;
Easy fault checking via digital display, convenient DIN rail installation.
7.2 Quick Memorization Rules
Correspondência atual: Rated motor current shall be within 30%-80% of protector range, avoid boundary value affecting accuracy
Voltage Selection: Prioritize Type S (24-240V CA/CC) control power for stronger compatibility
Configuração de parâmetros:
O-TIME: Definir 10-20 seconds when current is 1.2 times motor rated current
D-TIME: Set as motor startup time plus 2 segundos
Replacement Rule: Realize 1:1 direct replacement for traditional EOCR-SS series and thermal relays without changing installation size and wiring
- Aplicável & Cenários Inaplicáveis
Cenários Aplicáveis
- General Industrial Motors: Protection for water pumps, fãs, compressors and other common equipment
- Pequenas linhas de produção: 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
Cenários Inaplicáveis
- 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: Tipo Econômico, 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)
| Modelo | Faixa Atual | Poder de controle | Número do pedido. | Recursos principais | Potência Aplicável (380V) |
| EOCR-SS05S | 0.5-6UM | 24-240V CA/CC | 15872 | Overload/Phase Loss/Stall protection, Indicação LED | 0.18-3kW |
| EOCR-SS30S | 3-30UM | 24-240V CA/CC | 15873 | Same protection functions | 1.5-15kW |
| EOCR-SS60S | 5-60UM | 24-240V CA/CC | 15874 | Same protection functions | 3-30kW |
| EOCR-SS05W | 0.5-6UM | 380-440V e | 15875 | Dedicated 380V control power | 0.18-3kW |
| EOCR-SS30W | 3-30UM | 380-440V e | 15876 | Dedicated 380V control power | 1.5-15kW |
| EOCR-SS60W | 5-60UM | 380-440V e | 15877 | Dedicated 380V control power | 3-30kW |
2.2 EOCR-SSD Series (Digital Display Upgraded Version)
| Modelo | Faixa Atual | Poder de controle | Número do pedido. | Recursos principais | Potência Aplicável (380V) |
| EOCRSSD-05S | 0.5-6UM | 24-240V CA/CC | 15878 | Dual digital & LED display, fault record, inverter optimized | 0.18-3kW |
| EOCRSSD-30S | 3-30UM | 24-240V CA/CC | 15879 | Same functions | 1.5-15kW |
| EOCRSSD-60S | 5-60UM | 24-240V CA/CC | 15880 | Same functions | 3-30kW |
| EOCRSSD-05C | 0.5-6UM | 380-440V e | 15881 | 380V dedicated, dual display | 0.18-3kW |
| EOCRSSD-30W | 3-30UM | 380-440V e | 15882 | 380V dedicated, dual display | 1.5-15kW |
| EOCRSSD-60W | 5-60UM | 380-440V e | 15883 | 380V dedicated, dual display | 3-30kW |
- Multifunctional Digital Protectors (EOCR-E Series)
3.1 EOCR-3DE/FDE Series (Basic Digital Type)
| Modelo | Faixa Atual | Poder de controle | Wiring Type | Recursos principais | Cenários Aplicáveis |
| EOCR-3DE-05 | 0.5-6UM | 24-240V CA/CC | Window type | Overload/Phase Loss/Stall/Reverse Phase/Unbalance protection, pre-alarm | General industrial motors |
| EOCR-3DE-30 | 3-30UM | 24-240V CA/CC | Window type | Same functions | General industrial motors |
| EOCR-3DE-60 | 5-60UM | 24-240V CA/CC | Window type | Same functions | General industrial motors |
| EOCR-FDE-05 | 0.5-6UM | 24-240V CA/CC | Feed-through type | Same as 3DE series with different wiring | Space-limited installation |
| EOCR-FDE-30 | 3-30UM | 24-240V CA/CC | Feed-through type | Same as 3DE series with different wiring | Space-limited installation |
| EOCR-FDE-60 | 5-60UM | 24-240V CA/CC | Feed-through type | Same as 3DE series with different wiring | Space-limited installation |
3.2 EOCR-3EZ/FEZ Series (With Earth Fault Protection)
| Modelo | Faixa Atual | Poder de controle | Wiring Type | Recursos principais | Cenários Aplicáveis |
| EOCR-3EZ-05 | 0.5-6UM | 24-240V CA/CC | Window type | 3DE full functions + adjustable earth fault protection (30mA-1A) | Equipment requiring earth protection |
| EOCR-3EZ-30 | 3-30UM | 24-240V CA/CC | Window type | Same functions | Equipment requiring earth protection |
| EOCR-3EZ-80 | 5-80UM | 24-240V CA/CC | Window type | Same functions | Equipment requiring earth protection |
| EOCR-FEZ-05 | 0.5-6UM | 24-240V CA/CC | Feed-through type | Same as 3EZ series | Space-limited installation + earth protection |
| EOCR-FEZ-30 | 3-30UM | 24-240V CA/CC | Feed-through type | Same as 3EZ series | Space-limited installation + earth protection |
| EOCR-FEZ-80 | 5-80UM | 24-240V CA/CC | Feed-through type | Same as 3EZ series | Space-limited installation + earth protection |
3.3 EOCR-3E420/FE420 Series (With 4-20mA Output)
| Modelo | Faixa Atual | Poder de controle | Wiring Type | Recursos principais | Cenários Aplicáveis |
| EOCR-3E420-05 | 0.5-6UM | 24-240V CA/CC | Window type | 3DE functions + 4-20mA analog output | Remote monitoring system |
| EOCR-3E420-30 | 3-30UM | 24-240V CA/CC | Window type | Same functions | Remote monitoring system |
| EOCR-3E420-60 | 5-60UM | 24-240V CA/CC | Window type | Same functions | Remote monitoring system |
| EOCR-FE420-05 | 0.5-6UM | 24-240V CA/CC | Feed-through type | Same as 3E420 series | Space-limited + monitoramento remoto |
| EOCR-FE420-30 | 3-30UM | 24-240V CA/CC | Feed-through type | Same as 3E420 series | Space-limited + monitoramento remoto |
| EOCR-FE420-60 | 5-60UM | 24-240V CA/CC | Feed-through type | Same as 3E420 series | Space-limited + monitoramento remoto |
- Intelligent Protectors (EOCR-3DM2/FDM2/3MZ2 Series)
4.1 EOCR-3DM2 Series (Window Type)
| Modelo | Faixa Atual | Poder de controle | Recursos principais | Função de comunicação | Cenários Aplicáveis |
| EOCR-3DM2-WRDB | 0.5-80UM | 24Em DC | Proteção total + digital display + fault record + load selection | RS-485 Modbus | DC control system |
| EOCR-3DM2-WRDU | 0.5-80UM | 100-240V CA/CC | Proteção total + digital display + fault record + load selection | RS-485 Modbus | AC & DC universal system |
| EOCR-3DM2-WRDBHZ | 0.5-80UM | 24Em DC | With harmonic suppression function | RS-485 Modbus | Frequency conversion drive system |
| EOCR-3DM2-WRDUHZ | 0.5-80UM | 100-240V CA/CC | With harmonic suppression function | RS-485 Modbus | Frequency conversion drive system |
4.2 EOCR-FDM2 Series (Feed-through Type)
| Modelo | Faixa Atual | Poder de controle | Recursos principais | Função de comunicação | Cenários Aplicáveis |
| EOCR-FDM2-FRDB | 0.5-80UM | 24Em DC | Proteção total + digital display + fault record + load selection | RS-485 Modbus | DC control system |
| EOCR-FDM2-FRDU | 0.5-80UM | 100-240V CA/CC | Proteção total + digital display + fault record + load selection | RS-485 Modbus | AC & DC universal system |
| EOCR-FDM2-FRDBHZ | 0.5-80UM | 24Em DC | With harmonic suppression function | RS-485 Modbus | Frequency conversion drive system |
| EOCR-FDM2-FRDUHZ | 0.5-80UM | 100-240V CA/CC | With harmonic suppression function | RS-485 Modbus | Frequency conversion drive system |
4.3 EOCR-3MZ2 Series (Tipo de terminal, External CT Required)
| Modelo | Faixa Atual | Poder de controle | Recursos principais | Função de comunicação | Cenários Aplicáveis |
| EOCR-3MZ2-TRDB | 0.5-800UM (External CT) | 24Em DC | Proteção total + digital display + fault record + load selection | RS-485 Modbus | High current motor |
| EOCR-3MZ2-TRDU | 0.5-800UM (External CT) | 100-240V CA/CC | Proteção total + digital display + fault record + load selection | RS-485 Modbus | High current motor |
| EOCR-3MZ2-TRDBHZ | 0.5-800UM (External CT) | 24Em DC | With harmonic suppression function | RS-485 Modbus | High current frequency conversion motor |
| EOCR-3MZ2-TRDUHZ | 0.5-800UM (External CT) | 100-240V CA/CC | 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)
| Modelo | Faixa Atual | Poder de controle | Recursos principais | Cenários Aplicáveis |
| EOCRDS-05S | 0.5-6UM | 24-240V CA/CC | Overload/Phase Loss/Stall protection, digital display | Basic digital display demand |
| EOCRDS-30S | 3-30UM | 24-240V CA/CC | Overload/Phase Loss/Stall protection, digital display | Basic digital display demand |
| EOCRDS-60S | 5-60UM | 24-240V CA/CC | Overload/Phase Loss/Stall protection, digital display | Basic digital display demand |
| EOCRDS3-05S | 0.5-6UM | 24-240V CA/CC | Upgraded version with additional phase unbalance protection | Basic display + unbalance protection |
| EOCRDS3-30S | 3-30UM | 24-240V CA/CC | Upgraded version with additional phase unbalance protection | Basic display + unbalance protection |
| EOCRDS3-60S | 5-60UM | 24-240V CA/CC | Upgraded version with additional phase unbalance protection | Basic display + unbalance protection |
5.2 EOCR-PMZ/PFZ Series (Power Monitoring Type)
| Modelo | Faixa Atual | Poder de controle | Recursos principais | Função de comunicação | Cenários Aplicáveis |
| EOCR-PMZ-05 | 0.5-6UM | 24-240V CA/CC | Proteção total + monitoramento de energia + medição de energia | RS-485 Modbus | Energy consumption monitoring system |
| EOCR-PMZ-30 | 3-30UM | 24-240V CA/CC | Proteção total + monitoramento de energia + medição de energia | RS-485 Modbus | Energy consumption monitoring system |
| EOCR-PMZ-80 | 5-80UM | 24-240V CA/CC | Proteção total + monitoramento de energia + medição de energia | RS-485 Modbus | Energy consumption monitoring system |
| EOCR-PFZ-05 | 0.5-6UM | 24-240V CA/CC | Feed-through type, same functions as PMZ series | RS-485 Modbus | Monitoramento de energia + limited space |
| EOCR-PFZ-30 | 3-30UM | 24-240V CA/CC | Feed-through type, same functions as PMZ series | RS-485 Modbus | Monitoramento de energia + limited space |
| EOCR-PFZ-80 | 5-80UM | 24-240V CA/CC | Feed-through type, same functions as PMZ series | RS-485 Modbus | Monitoramento de energia + limited space |
5.3 EOCR-DGT Series (Tipo de proteção contra vazamento)
| Modelo | Faixa Atual | Faixa de proteção contra vazamento | Poder de controle | Recursos principais | Cenários Aplicáveis |
| EOCR-DGT-05 | 0.5-6UM | 30mA-1A | 24-240V CA/CC | Leakage + Sobrecarga + Phase Loss + Reverse Phase + Unbalance protection | Equipment in humid environment |
| EOCR-DGT-30 | 3-30UM | 30mA-1A | 24-240V CA/CC | Full combined protection | Equipment in humid environment |
| EOCR-DGT-60 | 5-60UM | 30mA-1A | 24-240V CA/CC | Full combined protection | Equipment in humid environment |
| EOCR-DGT-80 | 5-80UM | 30mA-1A | 24-240V CA/CC | Full combined protection | Equipment in humid environment |
- Quick Memorization of Model Naming Rules
- Prefixo: EOCR= Schneider motor protection relay series mark
- Código da série:
SS/SSD: Economical type (SSD with digital display)
3DE/FDE/3EZ/FEZ/3E420/FE420: Multifunctional digital type
3DM2/FDM2/3MZ2: Tipo inteligente (3MZ2 needs external CT)
DS/DS3: Simple digital display type
PMZ/PFZ: Power monitoring type
DGT: Leakage protection type
- Current Code: 05(0.5-6UM), 30(3-30UM), 60(5-60UM), 80(5-80UM)
- Power Supply Code: S(24-240V CA/CC), C(380V e), B(24CCV), Você(100-240V CA/CC)
- Modo de fiação: C(Window), F(Feed-through), T(Tipo de terminal)
- Função Especial: HZ(Harmonic suppression), 420(4-20mA output)
- Quick Selection Table by Functional Demand
| Demanda Funcional | Série recomendada | Principais vantagens | Max Current |
| Proteção básica & baixo custo | EOCR-SS/SSD | Econômico, fácil instalação | 60UM |
| Proteção básica + digital display | EOCRSSD/DS | Visualized fault checking | 60UM |
| Proteção total + proteção contra falha à terra | EOCR-3EZ/FEZ | Anti-leakage, high safety level | 80UM |
| Monitoramento remoto + analog signal | EOCR-3E420/FE420 | 4-20mA signal output, easy system integration | 60UM |
| Controle inteligente + comunicação | EOCR-3DM2/FDM2 | Modbus remote control | 80UM |
| High current motor protection | EOCR-3MZ2 | Match external CT, cover 0.5-800A | 800UM |
| Energy consumption monitoring + proteção | EOCR-PMZ/PFZ | Power statistics and energy-saving analysis | 80UM |
| Proteção contra vazamento + full combined protection | EOCR-DGT | Integrated leakage protection | 80UM |
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