モデルコードの解釈
| コードセグメント | 説明 |
| 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: 3-30あ, 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 |
コアの位置決め:
EOCRSSD-30S is a compact digital comprehensive motor protection relay, featuring three core protections: 過負荷, phase loss and stall. It is applicable for motors with current 3-30A and compatible with 24-240V wide-voltage control power supply.
- コア仕様パラメータ
| カテゴリ | 詳細仕様 | 備考 |
| 基本パラメータ | ||
| 注文番号 | EOCRSSD-30S (Schneider SKU: 0015874) | Standard universal model worldwide |
| 保護タイプ | Electronic overcurrent relay / Motor protector | Replace combination of traditional thermal relay and ammeter |
| インストール | 35mm DINレール取付 / Panel mounting | コンパクトな構造, 省スペース |
| 寸法 (幅×高さ×奥行き) | 56mm×78mm×120mm | Fully compatible with installation size of EOCR-SS series |
| 動作温度 | -20℃ ~ 60℃ | Adapt to temperature difference changes in industrial environment |
| 電気仕様 | ||
| Current Protection Range | 3-30あ (direct wiring) | External CT is required for current over 60A |
| 制御電源 | 24-240AC/DCV (50/60Hz) | Wide voltage design, fit for various control systems |
| Working Frequency | 50/60Hz | Universal power frequency for global use |
| Output Contacts | 1いいえ + 1NC passive contacts | 95-96 (ノースカロライナ州), 97-98 (いいえ) |
| 接点容量 | AC250V/5A, DC 30V/5A | Meet demands of conventional control circuits |
| 保護機能 | ||
| 過負荷保護 | 調整可能 (0.1~100s), support I²t inverse time characteristic | Set via O-TIME parameter |
| 欠相保護 | Quick action within 4 秒 | 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 |
| 表示機能 | 7-segment LED digital tube | Real-time display of operating current and fault code |
| リセットモード | 手動リセット (RESET button) / Electric reset | Easy recovery after troubleshooting |
| 正確さ & 信頼性 | ||
| Measuring Accuracy | ±1% | Higher than traditional thermal relay (±10%) |
| 応答時間 | 分. 0.2s (ストール保護) | Effectively prevent motor damage |
| Fault Record | Check the latest 3 障害記録 | Convenient for quick fault location |
| 絶縁クラス | Class II | High safety protection level |
- 一般的な障害 & Maintenance Solutions
3.1 Fault Codes & トラブルシューティング
| 故障コード | 障害の種類 | 考えられる原因 | ソリューション |
| 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 | 欠相 / 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 | ||
| 表示なし | 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. 配線の緩み | 2. Inspect and fasten all wiring | ||
| 3. Firmware error | 3. Restore device to factory settings |
3.2 Daily Maintenance Schedule
| メンテナンスサイクル | Maintenance Items | Operation Points |
| 毎日 | 目視検査 | Clean panel and heat dissipation holes, check normal LED display |
| 毎週 | 配線検査 | Check loose terminals and oxidation phenomenon |
| 毎月 | Parameter Verification | Confirm O-TIME and D-TIME conform to motor rated values |
| 四半期ごと | 機能テスト | 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.
| モデル | Current Protection Range | 制御電源 | 主な特長 | 適用モーター出力 (380V) |
| EOCRSSD-05S | 0.5-6あ | 24-240AC/DCV | Special for low current, direct wiring | 0.18-3kW |
| EOCRSSD-30S | 3-30あ | 24-240AC/DCV | General medium current type, direct wiring | 1.5-15kW |
| EOCRSSD-60S | 5-60あ | 24-240AC/DCV | General high current type, direct wiring (External CT required above 60A) | 3-30kW |
注記: 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 |
| 電流範囲 | 3-30あ | 2.5-32あ | 0.1-40あ | 3-30あ |
| 制御電源 | 24-240AC/DCV | 24-240AC/DCV | 24-240AC/DCV | 24-240AC/DCV |
| 保護機能 | 過負荷, 欠相, Stall | 過負荷, 欠相, Stall | 過負荷, 欠相, Stall, Phase Unbalance | 過負荷, 欠相, Stall |
| 表示モード | 7-segment LED digital tube | LED indicator light | Digital display | LED indicator light |
| Output Contacts | 1NO+1NC | 1NO+1NC | 1NO+1NC | 1NO+1NC |
| 精度等級 | ±1% | ±2% | ±1% | ±2% |
| Installation Size | 56×78×120mm | 55×78×118mm | 56×78×120mm | 55×78×118mm |
| 価格帯 | 中くらい (について 370 人民元) | 高い (について 500 人民元) | 高い (について 480 人民元) | 中くらい (について 350 人民元) |
| 主な利点 | Intuitive digital display, fault record, 1:1 replacement for SS series | Brand premium, excellent system integration | Phase unbalance protection, 高精度 | 費用対効果の高い, fast response speed |
- 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: 不要 (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
| Certification Type | Certification Standard | 適用範囲 | 主な要件 |
| CE認証 | で 60947-4-1 (電気の安全性) | EU Market | Comply with Low Voltage Directive (LVD) and EMC Directive |
| で 61000-6-2 (EMC Immunity) | |||
| UL認証 | 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 |
注記: 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 年.
- 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 幅広い電圧;
Three core protections: 過負荷, phase loss and stall;
Easy fault checking via digital display, convenient DIN rail installation.
7.2 Quick Memorization Rules
現在のマッチング: Rated motor current shall be within 30%-80% of protector range, avoid boundary value affecting accuracy
Voltage Selection: Prioritize Type S (24-240AC/DCV) control power for stronger compatibility
パラメータ設定:
O-TIME: セット 10-20 seconds when current is 1.2 times motor rated current
D-TIME: Set as motor startup time plus 2 秒
Replacement Rule: Realize 1:1 direct replacement for traditional EOCR-SS series and thermal relays without changing installation size and wiring
- 該当する & 適用できないシナリオ
該当するシナリオ
- General Industrial Motors: Protection for water pumps, ファン, compressors and other common equipment
- Small Production Lines: 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
適用できないシナリオ
- 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
- シリーズ分類の概要
Schneider EOCR digital motor protectors are divided into three categories by function positioning: エコノミータイプ, 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表示)
| モデル | 電流範囲 | 制御電源 | 注文番号. | コア機能 | 適用電力 (380V) |
| EOCR-SS05S | 0.5-6あ | 24-240AC/DCV | 15872 | Overload/Phase Loss/Stall protection, LED表示 | 0.18-3kW |
| EOCR-SS30S | 3-30あ | 24-240AC/DCV | 15873 | Same protection functions | 1.5-15kW |
| EOCR-SS60S | 5-60あ | 24-240AC/DCV | 15874 | Same protection functions | 3-30kW |
| EOCR-SS05W | 0.5-6あ | 380-440Vと | 15875 | Dedicated 380V control power | 0.18-3kW |
| EOCR-SS30W | 3-30あ | 380-440Vと | 15876 | Dedicated 380V control power | 1.5-15kW |
| EOCR-SS60W | 5-60あ | 380-440Vと | 15877 | Dedicated 380V control power | 3-30kW |
2.2 EOCR-SSD Series (Digital Display Upgraded Version)
| モデル | 電流範囲 | 制御電源 | 注文番号. | コア機能 | 適用電力 (380V) |
| EOCRSSD-05S | 0.5-6あ | 24-240AC/DCV | 15878 | Dual digital & LEDディスプレイ, fault record, inverter optimized | 0.18-3kW |
| EOCRSSD-30S | 3-30あ | 24-240AC/DCV | 15879 | Same functions | 1.5-15kW |
| EOCRSSD-60S | 5-60あ | 24-240AC/DCV | 15880 | Same functions | 3-30kW |
| EOCRSSD-05W | 0.5-6あ | 380-440Vと | 15881 | 380V dedicated, デュアルディスプレイ | 0.18-3kW |
| EOCRSSD-30W | 3-30あ | 380-440Vと | 15882 | 380V dedicated, デュアルディスプレイ | 1.5-15kW |
| EOCRSSD-60W | 5-60あ | 380-440Vと | 15883 | 380V dedicated, デュアルディスプレイ | 3-30kW |
- Multifunctional Digital Protectors (EOCR-E Series)
3.1 EOCR-3DE/FDE Series (Basic Digital Type)
| モデル | 電流範囲 | 制御電源 | 配線タイプ | コア機能 | 該当するシナリオ |
| EOCR-3DE-05 | 0.5-6あ | 24-240AC/DCV | Window type | Overload/Phase Loss/Stall/Reverse Phase/Unbalance protection, pre-alarm | General industrial motors |
| EOCR-3DE-30 | 3-30あ | 24-240AC/DCV | Window type | Same functions | General industrial motors |
| EOCR-3DE-60 | 5-60あ | 24-240AC/DCV | Window type | Same functions | General industrial motors |
| EOCR-FDE-05 | 0.5-6あ | 24-240AC/DCV | Feed-through type | Same as 3DE series with different wiring | Space-limited installation |
| EOCR-FDE-30 | 3-30あ | 24-240AC/DCV | Feed-through type | Same as 3DE series with different wiring | Space-limited installation |
| EOCR-FDE-60 | 5-60あ | 24-240AC/DCV | Feed-through type | Same as 3DE series with different wiring | Space-limited installation |
3.2 EOCR-3EZ/FEZ Series (With Earth Fault Protection)
| モデル | 電流範囲 | 制御電源 | 配線タイプ | コア機能 | 該当するシナリオ |
| EOCR-3EZ-05 | 0.5-6あ | 24-240AC/DCV | Window type | 3DE full functions + adjustable earth fault protection (30mA-1A) | Equipment requiring earth protection |
| EOCR-3EZ-30 | 3-30あ | 24-240AC/DCV | Window type | Same functions | Equipment requiring earth protection |
| EOCR-3EZ-80 | 5-80あ | 24-240AC/DCV | Window type | Same functions | Equipment requiring earth protection |
| EOCR-FEZ-05 | 0.5-6あ | 24-240AC/DCV | Feed-through type | Same as 3EZ series | Space-limited installation + earth protection |
| EOCR-FEZ-30 | 3-30あ | 24-240AC/DCV | Feed-through type | Same as 3EZ series | Space-limited installation + earth protection |
| EOCR-FEZ-80 | 5-80あ | 24-240AC/DCV | Feed-through type | Same as 3EZ series | Space-limited installation + earth protection |
3.3 EOCR-3E420/FE420 Series (With 4-20mA Output)
| モデル | 電流範囲 | 制御電源 | 配線タイプ | コア機能 | 該当するシナリオ |
| EOCR-3E420-05 | 0.5-6あ | 24-240AC/DCV | Window type | 3DE functions + 4-20mA analog output | Remote monitoring system |
| EOCR-3E420-30 | 3-30あ | 24-240AC/DCV | Window type | Same functions | Remote monitoring system |
| EOCR-3E420-60 | 5-60あ | 24-240AC/DCV | Window type | Same functions | Remote monitoring system |
| EOCR-FE420-05 | 0.5-6あ | 24-240AC/DCV | Feed-through type | Same as 3E420 series | Space-limited + 遠隔監視 |
| EOCR-FE420-30 | 3-30あ | 24-240AC/DCV | Feed-through type | Same as 3E420 series | Space-limited + 遠隔監視 |
| EOCR-FE420-60 | 5-60あ | 24-240AC/DCV | Feed-through type | Same as 3E420 series | Space-limited + 遠隔監視 |
- Intelligent Protectors (EOCR-3DM2/FDM2/3MZ2 Series)
4.1 EOCR-3DM2 Series (Window Type)
| モデル | 電流範囲 | 制御電源 | コア機能 | 通信機能 | 該当するシナリオ |
| EOCR-3DM2-WRDB | 0.5-80あ | 24ワシントンDCで | 完全な保護 + digital display + fault record + load selection | RS-485 Modbus | DC control system |
| EOCR-3DM2-WRDU | 0.5-80あ | 100-240AC/DCV | 完全な保護 + digital display + fault record + load selection | RS-485 Modbus | 交流 & DC universal system |
| EOCR-3DM2-WRDBHZ | 0.5-80あ | 24ワシントンDCで | With harmonic suppression function | RS-485 Modbus | Frequency conversion drive system |
| EOCR-3DM2-WRDUHZ | 0.5-80あ | 100-240AC/DCV | With harmonic suppression function | RS-485 Modbus | Frequency conversion drive system |
4.2 EOCR-FDM2 Series (Feed-through Type)
| モデル | 電流範囲 | 制御電源 | コア機能 | 通信機能 | 該当するシナリオ |
| EOCR-FDM2-FRDB | 0.5-80あ | 24ワシントンDCで | 完全な保護 + digital display + fault record + load selection | RS-485 Modbus | DC control system |
| EOCR-FDM2-FRDU | 0.5-80あ | 100-240AC/DCV | 完全な保護 + digital display + fault record + load selection | RS-485 Modbus | 交流 & DC universal system |
| EOCR-FDM2-FRDBHZ | 0.5-80あ | 24ワシントンDCで | With harmonic suppression function | RS-485 Modbus | Frequency conversion drive system |
| EOCR-FDM2-FRDUHZ | 0.5-80あ | 100-240AC/DCV | With harmonic suppression function | RS-485 Modbus | Frequency conversion drive system |
4.3 EOCR-3MZ2 Series (端子の種類, External CT Required)
| モデル | 電流範囲 | 制御電源 | コア機能 | 通信機能 | 該当するシナリオ |
| EOCR-3MZ2-TRDB | 0.5-800あ (External CT) | 24ワシントンDCで | 完全な保護 + digital display + fault record + load selection | RS-485 Modbus | High current motor |
| EOCR-3MZ2-TRDU | 0.5-800あ (External CT) | 100-240AC/DCV | 完全な保護 + digital display + fault record + load selection | RS-485 Modbus | High current motor |
| EOCR-3MZ2-TRDBHZ | 0.5-800あ (External CT) | 24ワシントンDCで | With harmonic suppression function | RS-485 Modbus | High current frequency conversion motor |
| EOCR-3MZ2-TRDUHZ | 0.5-800あ (External CT) | 100-240AC/DCV | 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)
| モデル | 電流範囲 | 制御電源 | コア機能 | 該当するシナリオ |
| EOCRDS-05S | 0.5-6あ | 24-240AC/DCV | Overload/Phase Loss/Stall protection, digital display | Basic digital display demand |
| EOCRDS-30S | 3-30あ | 24-240AC/DCV | Overload/Phase Loss/Stall protection, digital display | Basic digital display demand |
| EOCRDS-60S | 5-60あ | 24-240AC/DCV | Overload/Phase Loss/Stall protection, digital display | Basic digital display demand |
| EOCRDS3-05S | 0.5-6あ | 24-240AC/DCV | Upgraded version with additional phase unbalance protection | Basic display + アンバランス保護 |
| EOCRDS3-30S | 3-30あ | 24-240AC/DCV | Upgraded version with additional phase unbalance protection | Basic display + アンバランス保護 |
| EOCRDS3-60S | 5-60あ | 24-240AC/DCV | Upgraded version with additional phase unbalance protection | Basic display + アンバランス保護 |
5.2 EOCR-PMZ/PFZ Series (Power Monitoring Type)
| モデル | 電流範囲 | 制御電源 | コア機能 | 通信機能 | 該当するシナリオ |
| EOCR-PMZ-05 | 0.5-6あ | 24-240AC/DCV | 完全な保護 + 電力監視 + エネルギー計測 | RS-485 Modbus | Energy consumption monitoring system |
| EOCR-PMZ-30 | 3-30あ | 24-240AC/DCV | 完全な保護 + 電力監視 + エネルギー計測 | RS-485 Modbus | Energy consumption monitoring system |
| EOCR-PMZ-80 | 5-80あ | 24-240AC/DCV | 完全な保護 + 電力監視 + エネルギー計測 | RS-485 Modbus | Energy consumption monitoring system |
| EOCR-PFZ-05 | 0.5-6あ | 24-240AC/DCV | Feed-through type, same functions as PMZ series | RS-485 Modbus | Energy monitoring + limited space |
| EOCR-PFZ-30 | 3-30あ | 24-240AC/DCV | Feed-through type, same functions as PMZ series | RS-485 Modbus | Energy monitoring + limited space |
| EOCR-PFZ-80 | 5-80あ | 24-240AC/DCV | Feed-through type, same functions as PMZ series | RS-485 Modbus | Energy monitoring + limited space |
5.3 EOCR-DGT Series (漏電保護タイプ)
| モデル | 電流範囲 | 漏れ保護範囲 | 制御電源 | コア機能 | 該当するシナリオ |
| EOCR-DGT-05 | 0.5-6あ | 30mA-1A | 24-240AC/DCV | 漏れ + 過負荷 + 欠相 + Reverse Phase + Unbalance protection | Equipment in humid environment |
| EOCR-DGT-30 | 3-30あ | 30mA-1A | 24-240AC/DCV | Full combined protection | Equipment in humid environment |
| EOCR-DGT-60 | 5-60あ | 30mA-1A | 24-240AC/DCV | Full combined protection | Equipment in humid environment |
| EOCR-DGT-80 | 5-80あ | 30mA-1A | 24-240AC/DCV | Full combined protection | Equipment in humid environment |
- Quick Memorization of Model Naming Rules
- プレフィックス: EOCR= Schneider motor protection relay series mark
- シリーズコード:
SS/SSD: Economical type (SSD with digital display)
3DE/FDE/3EZ/FEZ/3E420/FE420: Multifunctional digital type
3DM2/FDM2/3MZ2: インテリジェントタイプ (3MZ2 needs external CT)
DS/DS3: Simple digital display type
PMZ/PFZ: Power monitoring type
DGT: 漏れ防止タイプ
- 現在のコード: 05(0.5-6あ), 30(3-30あ), 60(5-60あ), 80(5-80あ)
- Power Supply Code: S(24-240AC/DCV), W(380Vと), B(24VDC), U(100-240AC/DCV)
- 配線モード: W(Window), F(Feed-through), T(Terminal type)
- 特別な機能: HZ(Harmonic suppression), 420(4-20mA output)
- Quick Selection Table by Functional Demand
| Functional Demand | おすすめシリーズ | 主な利点 | Max Current |
| 基本的な保護 & 低コスト | EOCR-SS/SSD | 費用対効果の高い, 簡単な取り付け | 60あ |
| 基本的な保護 + digital display | EOCRSSD/DS | Visualized fault checking | 60あ |
| 完全な保護 + 地絡保護 | EOCR-3EZ/FEZ | Anti-leakage, high safety level | 80あ |
| 遠隔監視 + analog signal | EOCR-3E420/FE420 | 4-20mA signal output, easy system integration | 60あ |
| インテリジェントな制御 + コミュニケーション | EOCR-3DM2/FDM2 | Modbus remote control | 80あ |
| High current motor protection | EOCR-3MZ2 | Match external CT, cover 0.5-800A | 800あ |
| Energy consumption monitoring + 保護 | EOCR-PMZ/PFZ | Power statistics and energy-saving analysis | 80あ |
| 漏れ防止 + full combined protection | EOCR-DGT | 統合された漏洩保護 | 80あ |
コンタクタ,サーキットブレーカー,ソーラーインバーター,電気メーター,太陽電池



















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