Schneider EOCRSSD-30S Digital Motor Protector

Model Code Interpretation

Core Positioning:

EOCRSSD-30S is a compact digital comprehensive motor protection relay, featuring three core protections: overload, phase loss and stall. It is applicable for motors with current 3-30A and compatible with 24-240V wide-voltage control power supply.

2. Core Specification Parameters

3. Common Faults & Maintenance Solutions

3.1 Fault Codes & Troubleshooting

3.2 Daily Maintenance Schedule

4. 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.

Note: 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.

5. Cross-brand Product Comparison

6. Air Shipment Compliance & Certification Information

6.1 Air Shipment Compliance Judgment

Product Category: Electrical and electronic equipment (No built-in lithium battery / super capacitor)

UN Number: Not required (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 Certification Information

Note: 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 years.

7. Selection Formula & Quick Memorization Rules

7.1 Selection Formula

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: overload, phase loss and stall;

Easy fault checking via digital display, convenient DIN rail installation.

7.2 Quick Memorization Rules

Current Matching: 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

Parameter Setting:

O-TIME: Set 10-20 seconds when current is 1.2 times motor rated current

D-TIME: Set as motor startup time plus 2 seconds

Replacement Rule: Realize 1:1 direct replacement for traditional EOCR-SS series and thermal relays without changing installation size and wiring

8. Applicable & Inapplicable Scenarios

Applicable Scenarios

1. General Industrial Motors: Protection for water pumps, fans, compressors and other common equipment
2. Small Production Lines: Single motor control loop requiring visualized fault display
3. Renovation Projects: Replace traditional thermal relays to improve protection precision and convenience
4. Harsh Working Environment: Temperature range -20℃~60℃, suitable for most industrial sites
5. Multi-voltage System: 24-240V wide voltage adaptation, fit for transnational equipment and complex power supply environment

Inapplicable Scenarios

1. High-precision Control: Intelligent control system needing 4-20mA analog output or communication function (Recommend EOCR-E series)
2. Extra-high Current Motor: Current over 60A without space for external CT installation (Recommend EOCR-3DM2 series)
3. Special Protection Demand: Occasions requiring earth protection, leakage protection or phase sequence protection (Recommend EOCR-DS1 series)
4. Explosion-proof Environment: Hazardous areas needing explosion-proof certification (Choose dedicated explosion-proof protectors)

Full Series Model List of Schneider EOCR Digital Motor Protectors

1. 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.

2. Economical Digital Protectors (EOCR-SS/SSD Series)

2.1 EOCR-SS Series (LED Indication)

2.2 EOCR-SSD Series (Digital Display Upgraded Version)

3. Multifunctional Digital Protectors (EOCR-E Series)

3.1 EOCR-3DE/FDE Series (Basic Digital Type)

3.2 EOCR-3EZ/FEZ Series (With Earth Fault Protection)

3.3 EOCR-3E420/FE420 Series (With 4-20mA Output)

4. Intelligent Protectors (EOCR-3DM2/FDM2/3MZ2 Series)

4.1 EOCR-3DM2 Series (Window Type)

4.2 EOCR-FDM2 Series (Feed-through Type)

4.3 EOCR-3MZ2 Series (Terminal Type, External CT Required)

5. Special Function Protectors

5.1 EOCR-DS/DS3 Series (Economical Digital Display Type)

5.2 EOCR-PMZ/PFZ Series (Power Monitoring Type)

5.3 EOCR-DGT Series (Leakage Protection Type)

6. Quick Memorization of Model Naming Rules
7. Prefix: EOCR= Schneider motor protection relay series mark
8. Series Code:

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: Leakage protection type

3. Current Code: 05(0.5-6A), 30(3-30A), 60(5-60A), 80(5-80A)
4. Power Supply Code: S(24-240V AC/DC), W(380V AC), B(24VDC), U(100-240V AC/DC)
5. Wiring Mode: W(Window), F(Feed-through), T(Terminal type)
6. Special Function: HZ(Harmonic suppression), 420(4-20mA output)
7. Quick Selection Table by Functional Demand