Main Distribution Board

SEN Plus

SEN Plus is ABB’s complete low‑voltage switchgear solution designed to deliver robust performance, high reliability, and advanced safety across a wide range of applications

Engineered for both power distribution and intelligent motor control, it supports continuous operation in even the most demanding environments. Its strong mechanical design, extensive certification, and compatibility with ABB's digital technologies ensure that SEN Plus provides durable, efficient, and future‑proof operation in commercial, industrial, and utility infrastructures.

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SEN Plus metal-clad power distribution board MCC switchgear

Built for high performance in every environment

SEN Plus is engineered to operate reliably across diverse installation conditions, from small commercial buildings to large industrial facilities. Certified according to IEC 61439‑2 and IEC 60529 (IP30–IP54), it handles demanding electrical loads up to 6300 A while ensuring personnel safety through compartmentalized zones, arc‑fault protection, and robust short‑circuit withstand capabilities. Its epoxy‑coated steel structure provides long‑lasting resistance to shocks, scratches, and corrosion, preserving performance over time.

Efficient installation, maintenance and scalability

Designed for ease of commissioning and long‑term operation, SEN Plus enables simplified cabling, front access to main busbars, generous internal accessibility, and rigid frame construction for maintenance ease. The system supports fixed, plug‑in and withdrawable configurations, allowing operators to adapt the installation as needs evolve. Modular designs and Form 4B segregation support safe modifications, even under energized conditions, while smart components and communication capabilities prepare the system for advanced automation.

Ready for digitalization and intelligent operations

SEN Plus seamlessly integrates with ABB Ability™ and digital switchgear technologies, transforming traditional electrical systems into data‑driven assets. By enabling real‑time monitoring, predictive maintenance, and detailed condition assessment, SEN Plus supports significant reductions in downtime and operational costs. Combined with sensors, IEDs, and Ethernet‑based communication, it helps operators unlock, access, and analyze data to optimize performance, extend equipment lifetime, and improve safety—supporting cost savings of up to 30%.

Advanced arc fault protection for maximum safety

SEN Plus switchgear is engineered with advanced internal arc protection to ensure maximum safety in power distribution and motor control applications. Designed and fully type-tested according to IEC 61439-2 and IEC TR 61641, SEN Plus features robust arc-resistant construction that protects personnel and equipment from the risks of internal arcing faults.

Reliable, flexible and future‑ready low‑voltage switchgear

SEN Plus is designed to meet the most stringent international standards and operational requirements. Its technical performance ensures reliability, protection and long‑term stability in all installation conditions. Rated operational voltage reaches 690 V AC, with insulation levels up to 1000 V and impulse withstand voltages up to 12 kV. Horizontal busbars support up to 6700 A, while vertical busbars range from 1000 A to 6300 A depending on the configuration. The system withstands short‑circuit currents up to 100 kA for 1 second, and peak currents up to 220 kA. Certified to IEC 61439‑1/‑2 and tested for internal arc resistance, seismic events, and high ambient temperatures up to 50°C, SEN Plus ensures uncompromising performance.

Technical data

SEN Plus type tested assemblies are designed and manufactured in accordance with the very high quality in requirements of internationally recognized standards applicable to low voltage equipment.

Split Main Busbar Design up to 6300A rated current located at the rear of the column

5 steps of degree of protection up to IP54

Passive and Active Arc proof protection fulfilling criteria 1 to 7, class C

Seismic withstand certified

Feeders up to 630A and Motor Starters up to 355kW

Fixed, plug-in, withdrawable (full and half modules size), fused and fuseless execution up to Form 4b type 7

Digital switchgear evolution

Modern electrical infrastructures generate large quantities of operational data, and SEN Plus—when combined with ABB’s digital switchgear technologies—unlocks this information to improve reliability and decision‑making. Digital switchgear allows operators to collect, store, and analyze real‑time information, creating actionable insights that support predictive maintenance, reduce human error, and extend equipment lifetime. With condition monitoring, operators can identify developing issues before they escalate, optimize load management, prevent failures, and maintain continuity of operations. Integration with ABB Ability™ brings together cloud, edge, and on‑premise computing to provide scalable digitalization tailored to each facility.