LS EBS203C-200A-3P MCCB

EBS203C-200A-3P is a 3-pole, 200A rated earth-leakage قاطع دائرة الحالة المصبوب (MCCB/ELCB) manufactured by LS Electric (formerly LS Industrial Systems / LG Industrial Systems). It provides overcurrent, short-circuit and earth-leakage protection for three-phase electrical circuits.

📌 Model Explanation

EBS203C: EBS series earth-leakage MCCB; 200 = frame size (ل), 3 = number of poles (3ص), C = thermal-magnetic trip type (TM).

200أ: Rated operational current 200 amperes.

3ص: 3 أقطاب, suitable for three-phase three-wire systems.

⚙️ Key Specifications

🛠️ Applications & التوافق

التطبيقات النموذجية: توزيع الطاقة الصناعية, production line equipment, power and lighting circuits, suitable for three-phase applications requiring reliable earth-leakage and short-circuit protection.

توصية: Can be used with Meta-MEC series products for selective protection and coordination to improve system reliability.

🔄 Equivalent & Series Models

Same series: EBS203C-100A/125A/150A/175A, EBS204C (4-القطب), إلخ.

Alternative references: ABB Tmax series, Schneider NSX series, Chint NM8L series and other equivalent earth-leakage MCCBs. Breaking capacity and mounting dimensions must be matched.

📦 Supply & Procurement

ماركة: إل إس إلكتريك (LSIS), originally manufactured in South Korea.

Purchasing channels: Authorized LS Electric distributors in China, industrial platform www.bestcontactor.com. Typical price is around one thousand RMB; negotiable for bulk orders.

The core difference between EBS203C-200A-3P and EBS203C-200A-4P (standard model: EBS204C-200A) lies in the number of poles and the control method of the neutral (ن) conductor, which directly affects wiring, protection scope and application scenarios.

1. Structural Differences

EBS203C-200A-3P (3-القطب)

بناء: 3 line/incoming terminals, controlling only L1, L2, L3 (three-phase live conductors).

حيادي (ن): Does not pass through the breaker; directly connected.

حماية: Provides overload, short-circuit and earth-leakage protection only for three-phase live conductors.

EBS204C-200A-4P (4-القطب)

بناء: 4 line/incoming terminals, controlling L1, L2, L3 + ن (three-phase live conductors + neutral).

حيادي (ن): Passes through the breaker and switches simultaneously with phase conductors.

حماية: Protects three-phase live conductors + neutral and can disconnect a faulty neutral line.

1. Key Parameter Comparison

ثالثا. Functional & Safety Differences

1. Switching range

3ص: Switches phases only. Neutral remains live, posing electric shock risk during maintenance.

4ص: Switches both phases and neutral. Fully isolates power, safer and compliant with standards.

2. Earth-leakage protection effectiveness

3ص: Only detects three-phase current imbalance. Cannot protect against neutral faults (على سبيل المثال, neutral-to-earth short circuit).

4ص: Monitors total current of four poles (L1-L2-L3-N), trips on neutral leakage for complete protection.

3. System compatibility

3ص: Suitable for pure three-phase loads (المحركات, مضخات) with no single-phase loads and no neutral in the panel.

4ص: Suitable for mixed three-phase + single-phase systems (تجاري, صناعي, building distribution); neutral disconnection required for safety.

1. دليل الاختيار

Choose 3P (EBS203C):

Loads are pure three-phase motors, الضواغط, heaters, إلخ., with no 220V single-phase circuits.

Neutral in the distribution box does not pass through this breaker; space is limited.

Choose 4P (EBS204C):

System is TN-S / TN-C-S (separate N and PE conductors).

Circuit supplies single-phase loads (إضاءة, مآخذ, control circuits); neutral must be switched.

Required by safety standards (maintenance, حماية تسرب الأرض, earthing systems).

ملخص

3P = space-saving, cost-effective → dedicated for three-phase power

4P = safer, more complete → required for mixed power distribution

LS Electric EBS Series Earth-Leakage MCCBs (إلكب): Model List & Cross-Brand Cross-Reference

1. EBS Series Model System & Full List

Core features of EBS series: Earth-leakage molded case circuit breakers on LS Electric’s (formerly LS / LG Industrial Systems) Metasol platform, with built-in earth-leakage protection modules, providing triple protection against overload, short-circuit and residual current (تسرب الأرض) for low-voltage distribution systems.

1. Model Naming Convention

EBS □□□ – □□□A – □P

EBS: رمز السلسلة (earth-leakage MCCB)

1st digit: حجم الإطار (5=50AF, 10=100AF, 20=200AF, 40=400AF)

2nd digit: عدد الأعمدة (3=3P, 4=4ف)

3rd letter: كسر فئة القدرة (C=standard, S=high)

□□□A: التصنيف الحالي (في)

□P: عدد الأعمدة (3ف/4ف, consistent with 2nd digit)

2. Complete Model List by Frame Size

1) 50إطار التركيز البؤري التلقائي (EBS53C / EBS54C)

2) 100إطار التركيز البؤري التلقائي (EBS103C / EBS104C)

3) 200إطار التركيز البؤري التلقائي (EBS203C / EBS204C)

4) 400إطار التركيز البؤري التلقائي (EBS403C / EBS404C)

3. Earth-Leakage Parameters (Whole Series)

Residual operating current (أنا): 30mA/100mA/300mA/500mA optional (default 30mA for personal protection)

وقت التشغيل: ≤0.3s (IΔn=30mA), .10.1 ثانية (IΔn≥100mA)

Protection type: النوع أ (تكييف + pulsating DC leakage), suitable for modern electronic loads

1. Cross-Brand Equivalent Table for EBS Series

Below are equivalent models from major brands with matching core parameters (frame, التصنيف الحالي, أقطاب, كسر القدرة) for replacement reference.

Key Notes for Replacement

1. Breaking capacity matching: Select alternatives with breaking capacity ≥ original EBS model to ensure short-circuit protection reliability.
2. Earth-leakage module compatibility:

ABB requires RC221/RC222 earth-leakage accessories

Schneider requires Vigi modules (built-in / add-on)

Domestic NM8L/CDM1L have built-in earth-leakage modules, no extra parts needed

3. Mounting dimension check: Width may vary between brands (على سبيل المثال, EBS203C-200A-3P: 105مم; Schneider NSX250: 108مم), affecting panel layout.
4. Wiring type: Ensure replacement supports original mounting (fixed / البرنامج المساعد) and connection (front / rear wiring).

ثالثا. الاختلافات الرئيسية: EBS203C-200A-3P vs EBS204C-200A-4P

1. اختيار & Procurement Advice
2. Pole selection

Pure three-phase power loads (المحركات, الضواغط) → choose 3P (EBS203C)

Mixed three-phase + single-phase loads (إضاءة, مآخذ) → choose 4P (EBS204C) to meet safety standards

2. Earth-leakage current selection

Personal protection (دوائر المقبس) → IΔn = 30mA

Electrical fire prevention (power/lighting mains) → IΔn = 100mA / 300أماه

3. Purchasing channels

Authorized domestic distributors, industrial e-commerce platform www.bestcontactor.com

Regular stock models: EBS53C-50A, EBS103C-100A, EBS203C-200A, EBS403C-400A, إلخ.