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MNS® MCC Arc-Resistant Low Voltage Motor Control Centre

Advanced withdrawable technology with industry-leading arc flash protection

Arc-resistant low voltage motor control centre combining proven IEC design with UL 845 compliance for maximum safety, reliability, and operational efficiency.

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The MNS® MCC AR arc-resistant low voltage motor control centre for ANSI/NEMA/UL applications is the result of over 30 years of ABB experience with the design, manufacturing, and application of low voltage motor control solutions.

This innovative motor control centre incorporates the best proven features of a world-renowned IEC product along with all UL 845 requirements into a unique, comprehensive NEMA/UL product offering. With state-of-the-art withdrawable unit technology based on a proven global design, the MNS® MCC AR provides a higher level of safety while minimizing factory downtime.

The system offers plug-in, withdrawable, and full height unit technology for maximum configuration flexibility, with up to 4000 A horizontal bus and 1600 A vertical bus capacity. Arc-resistant per ANSI C37.20.7 with short circuit ratings up to 65 kA at 600 V, the MNS® MCC AR raises the bar in arc flash protection for low voltage motor control centres.

The insulating and isolating properties of the Multifunction Wall and "closed door" unit withdrawal provide a barrier between the operator and all live parts, affording operators the highest degree of safety and efficiency while performing both normal and maintenance operations.

Benefits

Safe and reliable

Arc-resistant design per ANSI C37.20.7 with ratings up to 65 kA at 600 V protects personnel from arc flash hazards, while the Multifunction Wall and closed-door unit withdrawal create a barrier between operators and all live parts

Easy to use

Withdrawable unit technology with rotary handles featuring four positions (ON, OFF, TRIP, MOVE) and integral doors eliminates the need to open doors for unit removal, streamlining operations and reducing training requirements

Flexible configurations

Plug-in, withdrawable, and full height unit technology with up to 4000 A horizontal and 1600 A vertical bus capacity adapts to diverse application requirements and reduces the total number of MCC sections needed

Easy to maintain

Pull-apart terminal blocks keep motor leads and control conductors connected in the wireway independent of unit position, enabling efficient maintenance and reconfiguration with minimal downtime

Features

Arc-resistant per ANSI C37.20.7 standard
State-of-the-art withdrawable unit technology based on proven global design
Multifunction Wall (MFW) provides insulating, non-flammable, non-hygroscopic housing for vertical bus with IP20 protection
Closed-door unit withdrawal with integral doors
Rotary handle with four operational positions: ON, OFF, TRIP, and MOVE
Rolling and locking withdrawable mechanism prevents inadvertent plug-in
Heavy-duty unit stabs shrouded to prevent accidental phase crossing
Pull-apart terminal blocks for control and power connections
Bus splice windows with visual inspection capability from front of MCC
Silver- and tin-plated copper horizontal bus
Silver-plated copper vertical bus
Strong, rigid C-channel frame composed of Aluzinc material with 25 mm hole spacing
Quarter-turn latches secure doors in closed position
Lockout/tagout capability with unit locked in isolated position
ANSI 61 light gray standard paint finish
Integration with ABB PSE softstarters, A-line contactors, ACS880 drives, Tmax XT breakers, and SACE Emax 2 breakers
Current-limiting protection with high interrupting capacity