EOCRSSD-30DF7 Schneider Digital Motor Protector

EOCRSSD-30DF7 is a digital motor protector manufactured by Schneider Electric (formerly Samwha, Coréia do Sul) 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.

1. Definição de código de modelo

2. Main Technical Specifications

3. Cross-brand Comparison

Pontos-chave da seleção

1. Display function: EOCRSSD-30DF7 supports real-time current monitoring and fault diagnosis, superior to indicator-light-only models
2. Protection accuracy: Electronic protector (±5%) far exceeds thermal relay (±15%), extending motor service life
3. Control power: 110VAC F7 version fits specific regional power grids, confirm on-site power supply first
4. Full Series Model List

EOCR-SSD Series Classification

Código do pedido & Acessórios

Standard order number: EOCRSSD-30DF7

Suporte de montagem: EOCR-MNT-01 (DIN rail type)

Extension cable: EOCR-CAB-05 (5eu) / EOCR-CAB-10 (10eu)

Test kit: EOCR-TEST-KIT (including analog load & calibrator)

5. Falhas Comuns & Maintenance Solutions

Ciclo de Manutenção

1. Inspeção diária: Check display status and alarm indicator
2. Monthly maintenance: Dust cleaning, tighten wiring terminals
3. Quarterly calibration: Verify protection parameter accuracy
4. Revisão anual: Inspect internal components, replace aging parts
5. Cenários de aplicação & Cases

Cenários Aplicáveis

Automação industrial: Máquinas-ferramentas CNC, transportadores, equipamento de impressão

Tratamento de água: Water pumps, fans with frequent startup and variable load

AVAC: Air compressors, cooling tower fans

Building materials industry: Misturadores, heavy-duty conveyors

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 (<0.5UM): Choose EOCRSSD-05S or match external CT

Casos Típicos

Caso 1: Water Pump Motor Protection in Steel Plant

Problema: Frequent false tripping of old thermal relays causing unplanned shutdowns without fault identification

Solução: Install EOCRSSD-30DF7, set current 15A (motor rated 13.5A), start delay 5s

Effect: False shutdown rate reduced by 62%, fault diagnosis time shortened from 2h to 5min, annual maintenance cost saved about 80,000 CNY

Caso 2: Mixer System in Pharmaceutical Factory

Problema: Motor burnout caused by mixer locked rotor leading to heavy losses

Solução: Adopt EOCRSSD-30DF7, set locked rotor protection (D-Time=3s, O-Time=1s)

Effect: Power cut within 3s once locked rotor occurs, 100% motor intact rate, avoid production stop losses

7. Selection Rules

Regras de seleção rápida

1. Correspondência atual: Set protection current within 0.9~1.1 times motor rated current
2. Delay setting: Start delay (D-Time) = actual motor startup time + 1 segundo
3. Fonte de energia: Prioritize matching on-site control power to avoid extra transformer cost
4. Display demand: Choose D-type for fault diagnosis, non-D-type for basic protection only
5. Air Freight Compliance & Certificações
6. 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

2. Qualification Certificates

CE: Comply with EU LVD & Diretivas EMC

UL: Meet US safety standards for North America market

CSA: Certified for Canadian market

CEI: Conform to international electrical standards for global use