LS EBS203C-200A-3P MCCB

EBS203C-200A-3P is a 3-pole, 200A rated earth-leakage 성형 케이스 차단기 (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 = 프레임 크기 (AF), 3 = number of poles (3피), C = thermal-magnetic trip type (TM).

200에이: 정격 작동 전류 200 amperes.

3피: 3 극, suitable for three-phase three-wire systems.

⚙️ Key Specifications

🛠️ Applications & 호환성

일반적인 애플리케이션: Industrial power distribution, production line equipment, power and lighting circuits, suitable for three-phase applications requiring reliable earth-leakage and short-circuit protection.

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

🔄 Equivalent & 시리즈 모델

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

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 & 획득

상표: LS일렉트릭 (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 (N) conductor, which directly affects wiring, protection scope and application scenarios.

1. Structural Differences

EBS203C-200A-3P (3-폴)

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

중립적 (N): Does not pass through the breaker; directly connected.

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

EBS204C-200A-4P (4-폴)

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

중립적 (N): Passes through the breaker and switches simultaneously with phase conductors.

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

1. Key Parameter Comparison

III. Functional & Safety Differences

1. Switching range

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

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

2. Earth-leakage protection effectiveness

3피: Only detects three-phase current imbalance. Cannot protect against neutral faults (예를 들어, neutral-to-earth short circuit).

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

3. System compatibility

3피: Suitable for pure three-phase loads (모터, 슬리퍼) with no single-phase loads and no neutral in the panel.

4피: Suitable for mixed three-phase + single-phase systems (광고, industrial, building distribution); neutral disconnection required for safety.

1. 선택 가이드

Choose 3P (EBS203C):

Loads are pure three-phase motors, 압축기, heaters, 등., 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 (조명, 소켓, control circuits); neutral must be switched.

Required by safety standards (유지, earth-leakage protection, earthing systems).

요약

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 (ELCB): 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, 과부하에 대한 삼중 보호 제공, short-circuit and residual current (earth leakage) for low-voltage distribution systems.

1. Model Naming Convention

EBS □□□ – □□□A – □P

EBS: 시리즈 코드 (earth-leakage MCCB)

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

2nd digit: 극 수 (3=3P, 4=4P)

3rd letter: 차단 용량 등급 (C=표준, S=high)

□□□A: 정격전류 (~ 안에)

□P: 극 수 (3P/4P, consistent with 2nd digit)

2. Complete Model List by Frame Size

1) 50AF Frame (EBS53C / EBS54C)

2) 100AF Frame (EBS103C / EBS104C)

3) 200AF Frame (EBS203C / EBS204C)

4) 400AF Frame (EBS403C / EBS404C)

3. Earth-Leakage Parameters (Whole Series)

잔여 작동 전류 (IΔn): 30mA/100mA/300mA/500mA optional (default 30mA for personal protection)

Operating time: ≤0.3s (IΔn=30mA), ≤0.1s (IΔn≥100mA)

Protection type: Type A (교류 + 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, 정격 전류, 극, 차단 용량) for replacement reference.

Key Notes for Replacement

1. 차단용량 매칭: 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 (예를 들어, EBS203C-200A-3P: 105mm; Schneider NSX250: 108mm), affecting panel layout.
4. Wiring type: Ensure replacement supports original mounting (결정된 / plug-in) and connection (front / rear wiring).

III. 주요 차이점: EBS203C-200A-3P vs EBS204C-200A-4P

1. 선택 & Procurement Advice
2. 극 선택

Pure three-phase power loads (모터, 압축기) → choose 3P (EBS203C)

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

2. Earth-leakage current selection

Personal protection (socket circuits) → IΔn = 30mA

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

3. Purchasing channels

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

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