How do MCCBs work?

Unlike traditional thermal-magnetic MCCBs, which rely on mechanical components, electronic MCCBs use microprocessor-controlled trip mechanisms to detect and respond to fault conditions. This provides:

Greater accuracy

Precise current measurement and fault detection, even under fluctuating loads or complex fault profiles.

Accessories to suit unique applications

Accessories include auxiliary contacts to operate during actuation along with auxiliary contacts dedicated to give trip indication in the event of overload or short circuit. Other accessories undervoltage trip releases for power loss protection and shunt trip releases for remote operation.

Wide protection range

Electronic trip units can be configured for a variety of protections including:

• Long-time, short-time, instantaneous, and ground fault
• Adjustable thresholds and delays

• Selective coordination for layered protection schemes

Consistent performance

Temperature-independent operation ensures reliable performance in environments with high or fluctuating ambient temperatures – something mechanical trip units can struggle with.

Advanced circuit protection
Detect and react to overloads, short circuits, and ground faults with precision, minimising risk to life and equipment.

Versatile applications
From data centres and critical infrastructure to heavy industry and renewable energy systems, electronic MCCBs suit a broader spectrum of applications.

Reduced maintenance costs
Accurate fault discrimination reduces nuisance tripping and wear, cutting unnecessary downtime and equipment servicing.

Data-driven operation
Integrated diagnostics and energy metering enhance system insight and efficiency.

Customisable settings
Fine-tune protection thresholds for specific load profiles or selective coordination with upstream/downstream devices.

Introducing LOVATO Electric’s new electronic MCCBs

Featured in the 2024–25 product catalogue, LOVATO Electric’s latest MCCBs combine rugged construction with smart protection:

• Current ratings from 40A to 800A for diverse load needs

• Breaking capacities up to 65kA at 400V AC
• 3- and 4-pole configurations, with fixed or adjustable trip units

• Electronic trip unit options for advanced protection and data capabilities

• Accessory compatibility: shunt and undervoltage trips, auxiliary contacts, motorised reset modules, and more

• Compact modular form, ideal for space-constrained installations

• Full IEC/EN 60947-2 compliance

• Robust thermoplastic construction, designed for high mechanical and thermal stress

Whether safeguarding a motor control centre or a critical distribution panel, LOVATO’s MCCBs deliver dependable, future-ready protection.

Why trust LOVATO Electric for your MCCB solutions?

Centennial expertise
Proven track record since 1922

Global reach, local support
Personalised service through local
reps and engineers

Vertically integrated production
In-house R&D, manufacturing, and testing
for end-to-end quality control

Focus on sustainability
Energy-efficient solutions and green manufacturing principles

Comprehensive portfolio
Complete solutions that integrate safety relays with contactors, circuit breakers, PLCs, and HMIs