Introduction
In the modern era of power distribution, protection devices like Molded Case Circuit Breakers (MCCBs) are indispensable. These devices safeguard electrical systems against overloads, short circuits, and faults, ensuring safety, reliability, and continuity of service in residential, commercial, and industrial applications.
One prominent MCCB series is GoPact MCCB, manufactured by Schneider Electric and offered in the Egyptian market (among other regions) via trusted partners such as Muhamed Harb Group. On Muhamed Harb’s website (muhamedharb.com), GoPact MCCBs are highlighted as part of their Schneider Electric solutions. محمد حرب جروب –+2محمد حرب جروب –+2
This article aims to provide a detailed, technically rich, and practically useful exploration of GoPact MCCB circuit breakers: from their origins and design features, through technical specifications, benefits, applications, selection and installation guidance, to challenges, market relevance (especially in Egypt), and future trends.

Background: Who Makes GoPact MCCB and Why It Matters
Schneider Electric is a globally recognized leader in energy management and automation. Its portfolio spans low- and medium-voltage power distribution, building automation, smart grid solutions, and industrial control. Muhamed Harb Group, on its site, presents itself as a key partner of Schneider Electric, offering its products in Egypt through contracting and electrical solutions divisions. محمد حرب جروب –
The GoPact MCCB series (also referred to as “جوباك MCCB” in Arabic) is part of Schneider’s low-voltage molded-case circuit breaker offering. Muhamed Harb’s website describes GoPact MCCB as combining performance, safety, international compliance, and cost-competitiveness. محمد حرب جروب –+1
Why GoPact MCCB matters:
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Affordability: Designed to be more cost-effective than some higher-end MCCBs, without compromising essential performance. محمد حرب جروب –
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Safety & Compliance: Meets international standards (e.g., IEC 60947‑2), ensuring reliable protection. voltex.co.za+2voltex.co.za+2
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Range & Flexibility: Supports a wide current range and different pole configurations, making it suitable for multiple applications.
Technical Specifications
To appreciate GoPact MCCB, one must understand its technical underpinnings — key ratings, trip units, and models. Below is a detailed breakdown based on product datasheets and publicly available technical literature.
2.1 Fundamental Electrical Ratings
Rated Current (In):
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GoPact MCCBs support a broad current range. For example, small models like the G12F3F16 are rated at 16 A. ple.vn
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Larger models reach very high currents: for instance, the G40F3A400 is rated at 400 A. ple.vn
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Certain frames go up to 800 A, covering heavy-duty applications. محمد حرب جروب –
Operational Voltage (Ue):
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Commonly designed for 415 V AC, 50/60 Hz in three-phase systems. voltex.co.za+2voltex.co.za+2
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Insulation voltage (Ui) is typically around 440 V AC, matching IEC 60947‑2 standards. voltex.co.za+1
Breaking Capacity (Icu / Ics):
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Breaking (ultimate fault-interrupting) capacity varies by model: e.g., 36 kA Icu for the G20F3A125 at 415 V. voltex.co.za
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Some smaller GoPact variants (e.g., the 80 A, 3-pole G12E3A80) have Icu values of 15 kA at 415 V. voltex.co.za
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Four-pole versions (e.g., G20B4A40) have breaking capacities around 25 kA for 415 V. voltex.co.za
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High current model G40F3A400: 36 kA Icu at 415 V, reflecting robust short‑circuit protection. ple.vn
Performance Level:
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Performance levels (per IEC) vary: e.g., G20F3A125 is rated F 36 kA at 380/415 V. voltex.co.za
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The G12E3A80 is rated E 15 kA for its performance class. voltex.co.za
2.2 Trip Unit: Technology and Options
The GoPact MCCB series uses thermal-magnetic (TMD) trip units:
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Thermal (long-time) protection guards against overload by heating a bimetallic strip, which bends and triggers a trip after a certain time.
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Magnetic (instantaneous) protection reacts rapidly to very high current spikes (short circuits) via a magnetic coil.
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Some trip units are adjustable for thermal protection — enabling the user to set the bimetal trip threshold based on load conditions. voltex.co.za
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Trip units offer LI protection: Long-time (L) and Instantaneous (I) are the basic protective functions for GoPact MCCBs. voltex.co.za+1
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Control is usually via a toggle switch. ple.vn+1
2.3 Mechanical Design and Mounting
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GoPact MCCBs are designed for fixed mounting; they don’t generally support withdrawable mechanisms. voltex.co.za
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Pole configurations: Commonly 3-pole (3P) for three-phase circuits; but there are 4-pole options (3P + neutral) for some models (e.g., G20B4A40). voltex.co.za
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For isolation, GoPact MCCBs are compliant with relevant IEC standards. voltex.co.za
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The unit’s physical design ensures insulation, robustness, and safety consistent with low-voltage power distribution demands.
Key Advantages & Benefits
GoPact MCCB offers several compelling benefits, which make it an attractive choice in many electrical systems — especially when deployed via regional partners like Muhamed Harb Group.
3.1 Cost-Effectiveness
One of the standout features of GoPact MCCB is its competitive pricing strategy. Schneider Electric engineered this line to reduce overall cost without sacrificing core protective functionality. On Muhamed Harb’s site, GoPact is presented as a solution that balances performance with affordability. محمد حرب جروب –+1
This cost-effectiveness benefits panel builders, contractors, and end-users by reducing total system cost, particularly in price-sensitive markets.
3.2 Safety and Compliance
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GoPact MCCBs comply with IEC 60947‑2, an international standard for low-voltage circuit breakers. voltex.co.za+1
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The robust breaking capacity (Icu) in many models ensures they can safely interrupt high short-circuit currents.
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Thermal-magnetic trip units provide dual-layer protection: overload + instantaneous fault protection.
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Fixed and adjustable trip settings give flexibility for different protection needs without adding excessive complexity.
3.3 Wide Range of Models
GoPact MCCB is available in a broad current range (from as low as 16 A to hundreds of amperes), and supports different pole configurations. This variety allows designers and electricians to select the appropriate breaker for diverse use-cases — from small panels to heavy-duty distribution.
3.4 Local Availability & Support
Muhamed Harb Group, as a business that partners with Schneider Electric, ensures support, distribution, and service within Egypt. This local presence means:
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Easier procurement (stock availability)
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Technical support & consulting
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Warranty support and spare-part access
3.5 Modular and Accessible Design
Given its fixed mounting, GoPact MCCBs are straightforward to install in standard distribution boards or panels. The toggle control is user-friendly, and the lack of complex draw-out mechanisms simplifies design, maintenance, and training.



