描述
This ABE404b 4P MCCB Replacement is a high-compatibility alternative for the original LS ABE404b 4P MCCB produced by South Korea’s LS Electric (formerly LG Electronics), fully covering rated current specifications of 250A, 300A, 350A, and 400A. With 1:1 installation compatibility, performance matching the original factory standards, and competitive cost-effectiveness, this ABE404b 4P MCCB Replacement becomes an ideal alternative solution for industrial and building power distribution systems, providing stable and reliable overload and short-circuit protection for various low-voltage power distribution scenarios.
Core Advantages of ABE404b 4P MCCB Replacement (Key Selling Points of Replacement Model, Addressing User Needs Directly)
Fully aligned with the original LS ABE404b 4P MCCB design: 4P (three-phase and one neutral) structure, 400AF frame current. The installation holes, wiring dimensions, and overall dimensions are 1:1 replicated. No need to modify the power distribution cabinet or adjust the wiring; it can directly replace the original factory part without affecting the operation of the original power distribution system.
Comprehensive alignment of electrical parameters: Rated working voltage AC 415V (max 600V), rated insulation voltage 690V, rated impulse withstand voltage 6kV, ultimate short-circuit breaking capacity (Icu) 25kA @ 415V, and operational short-circuit breaking capacity (Ics) 25kA @ 415V (100% Icu). It fully adapts to the working conditions of the original LS ABE404b 4P MCCB with no attenuation in protection performance.
Adopts a thermal-magnetic tripping system: Thermal tripping achieves precise overload protection, and magnetic tripping (fixed 10×In setting) provides instantaneous short-circuit protection. Class A non-selective protection design is perfectly suitable for the protection needs of conventional power distribution circuits, and can be used as the main switch or branch switch of distribution boxes and switch cabinets.
The entire series passes strict factory testing: Temperature resistance, impact resistance, mechanical life, and electrical life all meet industrial-grade standards. It operates stably for a long time and can cope with complex working conditions such as industrial workshops and commercial buildings. There is no need to worry about performance when replacing the original LS ABE404b 4P MCCB.
As an original replacement model, on the premise of ensuring core performance and installation compatibility, this ABE404b 4P MCCB Replacement greatly reduces procurement costs. It is suitable for bulk projects, maintenance replacement, export orders and other scenarios, realizing cost optimization of the power distribution system without sacrificing any reliability.
Full specifications are in stock, supporting customized wiring (standard front wiring, optional rear wiring) and accessory selection to meet the personalized needs of different projects.
Widely used in various low-voltage power distribution systems such as industrial workshops, commercial complexes, office buildings, residential communities, data centers, photovoltaic power distribution, and charging piles. It can be used for overload and short-circuit protection of power distribution main lines, branch circuits, and motor control circuits, fully covering the application scenarios of the original LS ABE404b 4P MCCB.
Screw-fixed installation, suitable for various low-voltage power distribution cabinets, power cabinets, and distribution boxes, with convenient installation and simple maintenance.
3. Technical Specs of ABE404b 4P MCCB Replacement (Clear and Intuitive, Improving Conversion)
| Parameter Item | Specification Details |
|---|---|
| Product Type | Molded Case Circuit Breaker (MCCB, Replacement for LS ABE404b 4P MCCB) |
| Pole Number | 4P (Three-phase and one neutral, four-wire system) |
| Frame Current (AF) | 400AF |
| Rated Current (In) | 250A / 300A / 350A / 400A (All specifications optional) |
| Rated Working Voltage (Ue) | AC 415V (Max 600V) |
| Rated Insulation Voltage (Ui) | 690V |
| Rated Impulse Withstand Voltage (Uimp) | 6kV |
| Ultimate Short-Circuit Breaking Capacity (Icu) | 25kA @ 415V |
| Operational Short-Circuit Breaking Capacity (Ics) | 25kA @ 415V (100% Icu) |
| Tripping Method | Thermal-Magnetic (Thermal Trip + Magnetic Trip, Magnetic Trip fixed at 10×In) |
| Protection Class | Class A (Non-selective) |
| Wiring Method | Standard front wiring, optional rear wiring customization |
| Installation Method | Screw-fixed |
| Applicable Standard | IEC 60947-2, GB 14048.2 |
| Certification | CCC, CE |
4. Model Selection for LS ABE404b 4P MCCB Replacement (Reducing User Selection Cost)
| Replacement Model | Rated Current | Compatible with Original LS Model |
|---|---|---|
| ABE404b-250 4P | 250A | LS ABE404b 4P 250A |
| ABE404b-300 4P | 300A | LS ABE404b 4P 300A |
| ABE404b-350 4P | 350A | LS ABE404b 4P 350A |
| ABE404b-400 4P | 400A | LS ABE404b 4P 400A |
5. FAQ about ABE404b 4P MCCB Replacement (Addressing User Concerns, Enhancing Trust)
A: Absolutely. This replacement model replicates the original factory’s installation dimensions, wiring dimensions, and electrical parameters 1:1. No need to modify the power distribution cabinet or adjust the wiring; it can directly replace the original factory part without affecting the normal operation of the original power distribution system.
A: No difference. We strictly align with the original factory’s thermal-magnetic tripping system, breaking capacity, and protection logic. It has passed CCC and CE certifications, complies with international and national standards, and the overload and short-circuit protection performance is completely consistent with the original factory, which can fully replace the original factory part.
A: Yes. We support rear wiring customization and accessory selection (such as auxiliary contacts, shunt trip devices, etc.). At the same time, we can provide third-party test reports and certification documents to meet the needs of project acceptance and export orders.
A: This circuit breaker is suitable for various low-voltage power distribution systems such as industrial workshops, commercial buildings, residential buildings, data centers, photovoltaic power distribution, and charging piles. It can be used as the main switch or branch switch of distribution boxes and switch cabinets, fully covering the application scenarios of the original LS ABE404b 4P MCCB.
A: We provide a 12-month product quality guarantee and full technical support, including selection and installation guidance. If you have any questions, you can contact our technical team at any time for a quick response and solution.
6. Service Guarantee (Enhancing User Trust)
- Full specifications are in stock for fast delivery, supporting bulk purchasing
- 12-month product quality guarantee, full technical support, worry-free selection and installation
- Third-party test reports and certification documents can be provided to meet project acceptance requirements
- Customized services are supported to adapt to the personalized needs of different projects











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