LS Electric BKH High Breaking Capacity MCB

The LS Electric BKH High Breaking Capacity Miniature Circuit Breaker is an enhanced-performance MCB designed for applications where prospective short-circuit current levels exceed the capability of standard 6 kA MCBs — such as main distribution boards, industrial panel incomers, and distribution points close to large transformers in commercial and industrial facilities across Saudi Arabia. The BKH provides 10 kA or 15 kA breaking capacity (depending on variant) at 230/400 V AC, meeting the requirements of IEC 60947-2 for industrial circuit breakers in high-energy fault environments. Available in 1-pole through 4-pole configurations from 6 A to 63 A with trip curves B, C, and D, the BKH addresses the same application range as standard MCBs while providing the higher fault interruption capability demanded by Saudi Electrical Code requirements at distribution board incomer positions.

The BKH features a reinforced double-break contact system with arc quenching chambers rated for the higher fault energies encountered in high breaking capacity applications. The trip mechanism incorporates thermal bimetallic and magnetic elements with adjustable magnetic trip threshold on selected variants, providing Class B, C, or D tripping characteristic precision matched to the load circuit type. An LED fault indicator confirms circuit breaker trip status distinct from deliberate switching-off, and a lock-off facility prevents accidental re-energisation during maintenance activities — a safety requirement under Saudi OSHA-equivalent occupational safety regulations for lockout/tagout procedures at industrial facilities.

In Saudi Arabia's industrial sector, the need for high breaking capacity MCBs is particularly acute in facilities supplied from large transformers (1 MVA and above) where prospective fault levels at the distribution board can exceed 10 kA. Industrial facilities at MODON estates, SEC substation-fed factories, and petrochemical plant utility distribution rooms routinely require 10 kA or greater interrupting capacity at distribution board level. The BKH provides this capability at an SAR price significantly below equivalent ABB S200P and Siemens 5SP high breaking capacity MCBs, giving Saudi electrical contractors and facility owners the technical protection level required at reduced material cost.

Razz Middle East supplies the BKH in standard configurations and current ratings for immediate Saudi Arabia supply. Our electrical team provides guidance on prospective fault current calculation and BKH selection for compliance with Saudi Electrical Code distribution protection requirements.