Circuit breaker ESS GB1-125 10KA, MSL8, ESS-63, NXBLE 1-3P, 1-63A (ESSB1-125 3P 80A)

ESS ESSB1-125 3P 80A, 10 kA circuit breaker

⚡ The ESS ESSB1-125 3P 80A is a three-pole circuit breaker designed for switching and protecting an electrical line. It is used in three-phase distribution boards to help protect cables, connected equipment and the electrical network against overloads and short circuits.

The rated current of this version is 80 A. It must therefore be used only where the cable and connected equipment are designed for the corresponding current load.

🛡️ Protection functions

• Overload protection — prolonged current above the safe limit, causing cable heating;
• short-circuit protection — a sharp current increase caused by an accidental connection between conductors;
• manual isolation — for maintenance and repair of the electrical line.

🔌 Main specifications

• Brand: ESS;
• series: ESSB1-125 / GB1-125;
• number of poles: 3P;
• rated current: 80 A;
• breaking capacity: 10 kA;
• purpose: overload and short-circuit protection;
• network type: three-phase;
• installation: electrical distribution board.

💥 What a 10 kA breaking capacity means

The 10 kA value indicates the prospective short-circuit current that the breaker can safely interrupt under the conditions specified by the manufacturer. It is not the normal operating current: the rated current of this version is 80 A.

✅ Key advantages

• Three poles for simultaneous disconnection of three phases;
• 80 A rated current for appropriately designed circuits;
• 10 kA breaking capacity;
• helps protect cables against dangerous overheating;
• automatic disconnection during a short circuit;
• manual switching and isolation;
• compact installation in a distribution board;
• suitable for residential, commercial and light industrial facilities.

🏢 Applications

• three-phase incoming and branch circuits;
• electrical distribution boards;
• private houses and cottages;
• shops, offices and administrative buildings;
• workshops and light industrial facilities;
• pumps, ventilation systems and other three-phase equipment where correctly calculated;
• backup and auxiliary electrical circuits.

⚠️ Important selection guidance

A circuit breaker must be selected according to the permissible current of the cable, not only the power rating of the equipment. Installing an 80 A breaker on an undersized cable may allow the wiring to overheat before the protection operates.

Before purchasing, verify the following markings on the product:

• rated current — 80 A;
• number of poles — 3P;
• breaking capacity — 10 kA;
• tripping characteristic;
• rated voltage and frequency;
• permitted conductor cross-section;
• applicable manufacturing standard.

🔧 Installation and terminal tightening must be carried out by a qualified electrician.