New Product Launch: ELECO ALF125H Series MCB - Engineering Safety with 10kA Breaking Capacity
Introduction
Wenzhou ELECO Electric Technology Co., Ltd. officially announces the launch of the ALF125H Series Miniature Circuit Breaker (MCB). Designed for demanding industrial and commercial power distribution systems, this new series delivers compact protection with high short‑circuit breaking capacity to solve such critical market demands.
Beyond the Datasheet: Why We Built the ALF125H
In our recent field surveys, we found that standard 6kA breakersoften struggle in high‑fault‑current main Distribution Boards, leading to premature aging. Our R&D team spent 8 months re‑engineering the tripping mechanism.
In lab tests to Iec 60947‑2, ALF125H successfully interrupts 10,000A short‑circuit current at 400V AC with no housing deformation.
Key Features & Technical Advantages
- High Breaking Capacity: Up to 10,000A (10kA) at 230V/400V AC, conforming to EN/Iec 60947‑2, CE & CB certified.
- Wide Current Range: 63A, 80A, 100A, and 125A ratings to cover both branch and main feeder lines.
- Flexible Protection: Available in B, C, and D tripping curves for different load types (e.g., D‑curve for motor starting inrush currents).
- Space‑Saving Design: Only 27mm width per pole, fitting standard 35mm DIN rails. Compared with conventional mccbs for main feeders, its slim footprint greatly reduces cabinet space occupation.
- Robust Terminals: Accepts flexible/rigid cables up to 50mm² with 3.5 N.m tightening torque.

Technical Specifications Overview
| Item | Details |
|---|---|
| Model | ALF125H Series |
| Poles | 1P, 2P, 3P, 4P |
| Rated Voltage | 240V AC (1P), 415V AC (Multi‑pole) |
| Tripping Mechanism | Thermal / Magnetic release |
| Warranty | 5‑year manufacturer warranty |
Ideal Application Scenarios
- Industrial Control Panels: Protecting heavy machinery and motors.
- Commercial Buildings: Main sub‑distribution units requiring high fault tolerance.
- Renewable Energy: Solar inverter output circuits.
Frequently Asked Questions (FAQ)
Q1: Is the ALF125H compatible with standard DIN rails?
A1: Yes, the ALF125H series is designed for convenient mounting on standard 35mm DIN rails.
Q2: What is the difference between B, C, and D curves?
A2: B‑curve trips between 3–5×In for lighting loads; C‑curve 5–10×In for general power distribution; D‑curve 10–16×In for high inrush loads such as motors and transformers.
Q3: What cable size does the 125A ALF125H support?
A3: It supports up to 50 mm² for both flexible and rigid cables.
Contact Us for Quotes & Samples
Upgrade your electrical protection with ELECO. Contact our technical sales team today:
Website: www.elecogroup.com
Email: eleco@elecogroup.com
Phone: +86 158 6803 3555


















